YOU: Fix the US Energy Crisis

[rufu]

I suggest to develop Nikolas Tesla's Patents. I had read about his one of the work that can produce huge amount of energy from LIGHTNING and other natural disturbances by using high quality capacitors.
Its heard that Tesla in 1889 had set up a wireless lighting of 200 incandescent bulbs from a 26 mile away source.

 

[martix]

Yeesh... here we go again.

But anyway. Here's something to puzzle about: Why is only the US in crisis. And if it's not just them, why only fix it in the US.

 

[rufu]

Every nation has her own energy crisis. Some of them are waiting other countries to bring up new energy projects. The benefit is that the last one who install a new project will have less draw backs of implementation. US does't have time to wait,because it will hinder their present financial rhythm.

 

[Felchi]

I don't live in America nor am I particularily well educated in science compared to many but here's my opinion:

1. Improve public transit. I don't know about the average US city/suburb but where I live, buses are slow, fares are continuously climbing and there are a ridiculously low amount of buses in certain routes. I personally once ran 5 km to my destination. On my way, I saw 4 buses--go the other way. It was only when I reached my destination that a bus came my way. Unless mass transit is convenient and practical, no one will be willing to stand half an hour at a bus stop when they could drive somewhere in 20 minutes.

2. Nuclear is a nice idea, but in essence, isn't this repeating history? Coal was seen as a long lasting energy source in its time and look at us now. Nuclear is no more renewable than coal is. It's just a band-aid solution we would put on the energy crisis that would only escalate the problem when the day comes that energy demands are even higher and we only have a limited amount of nuclear fuel.

3. For biomass, it all depends on the fuel you use. I have no objection to the burning of feces--we have that in high supply and it is definitely a renewable resource. However, the use of ethanol is a bit more problematic. To my knowledge, the US is in a bit of an economic slump right now and the market economy contributes to poverty and so, higher dependence on food banks. Ethanol is derived from organic products, namely plants and seeing as the US has fields of corn at the ready, corn would be the "ideal" source of ethanol. Corn is the feed for livestock and source of one of the most widespread sweeteners. If you start placing other demands on corn, you boost the prices of food all over the US. It is definitely not the ideal energy donkey on which we should dump USA's energy needs.

 

[russ_watters]

Welcome to PF!

Neither coal nor nuclear have a longevity problem. The problem with coal is that it pollutes and the problem with nuclear is people think it pollutes.

Biomass pollutes as well.

 

[Tarti]

Oh come on russ_watters...
there are so many stories about nuclear power plants that have minor failures (not to be reported) causing children to be disabled. I also disagree that coal pollutes. There are a lot of technologies available that make it basically clean, more info on wiki.
Nevertheless I do agree that any transition to green energy has to be made very carefully.

 

[russ_watters]

Oh come on russ_watters...
there are so many stories about nuclear power plants that have minor failures (not to be reported) causing children to be disabled.

None are true. There has never been a nuclear power accident in the US with more than very small/trace release of radioactive material and the worst of them, Three Mile Island, resulted in no increase in health problems as documented in a 20 year study. You must be looking at crackpot sources. The wiki on TMI:

No significant level of radiation was attributed to the TMI-2 accident outside of the TMI-2 facility. According to the Rogovin report, the vast majority of the radioisotopes released were the noble gases, Xenon and Krypton. The report stated, "During the course of the accident, approximately 2.5 million curies of radioactive noble gases and 15 curies of radioiodines were released." This resulted in an average dose of 1.4 mrem to the two million people near the plant. The report compared this with the additional 80 mrem per year received from living in a high altitude city such as Denver.[37] As further comparison, you receive 3.2 mrem from a chest X-Ray – more than twice the average dose of those received near the plant.[38]

http://en.wikipedia.org/wiki/Three_Mile_Island_accident#Radioactive_material_release
And more directly about the health effects: http://en.wikipedia.org/wiki/Three_Mile_Island_accident_health_effects

I also disagree that coal pollutes. There are a lot of technologies available that make it basically clean, more info on wiki.

There are ways to improve the cleanliness of coal, but coal is at best still coal. It is carbon and burning it makes carbon dioxide. There currently is no way to get around that.

That article you linked, by the way, doesn't mention "clean coal" and discusses many of the major pollution problems of coal. It doesn't support your argument, it supports mine.

 

[Buckleymanor]

Every nation has her own energy crisis. Some of them are waiting other countries to bring up new energy projects. The benefit is that the last one who install a new project will have less draw backs of implementation. US does't have time to wait,because it will hinder their present financial rhythm.

It's difficult to understand if there is an actual energy "crisis" or that it the whole thing is just politicts.
Where I live GB. there are finacial incentives to insulate your home to save energy and disincentives if you don't which seem reasonable. However automobile and comercial vehicles escape.I don't know what your vehicle uses but I know mine uses more energy than my house. So how come the automotive industry avoids legistlation to save energy yet households don't.
I don't just wan't to imply that the engine could be insulated but the cab and battery etc.
So tell me I am wrong!
As far as I can see it's all political bull.

 

[Felchi]

Welcome to PF!

Neither coal nor nuclear have a longevity problem.

Really? I thought the coal deposits in the Earth and the usable radioactive elements deposits in the Earth are finite, or at least don't renew themselves fast enough.

 

[Alfi]

It's difficult to understand if there is an actual energy "crisis" or that it the whole thing is just politicts.
Where I live GB. there are finacial incentives to insulate your home to save energy and disincentives if you don't which seem reasonable. However automobile and comercial vehicles escape.I don't know what your vehicle uses but I know mine uses more energy than my house. So how come the automotive industry avoids legistlation to save energy yet households don't.
I don't just wan't to imply that the engine could be insulated but the cab and battery etc.
So tell me I am wrong!
As far as I can see it's all political bull.

Ok ... you're wrong.

There used to be herds of bison on the plains in the Millions. Some people probably saw them as inexhaustible and killed them by the thousands for no reason from trains.

Look at any city and see the lights left on over night. People see energy as inexhaustible in the same way.

 

[Buckleymanor]

People see energy as inexhaustible in the same way.

It is, you and I will run out of energy long before the world or the universe does.
Bison depletion does not have anything to do with any gain or loss of energy.It just trying to get some kind of political green empathy.
You know poor helpless animals dying in there millions by the thoughtless act's of man.
Light's on same result.
No!

 

[Alfi]

Perhaps you are correct Buckleymanor.

why try?
It just trying to get some kind of political green empathy.

 

[OmCheeto]

It's difficult to understand if there is an actual energy "crisis" or that it the whole thing is just politicts.
Where I live GB. there are finacial incentives to insulate your home to save energy and disincentives if you don't which seem reasonable. However automobile and comercial vehicles escape.I don't know what your vehicle uses but I know mine uses more energy than my house. So how come the automotive industry avoids legistlation to save energy yet households don't.
I don't just wan't to imply that the engine could be insulated but the cab and battery etc.
So tell me I am wrong!
As far as I can see it's all political bull.

Political bull?

Why don't you patent your insulated engine, cab, battery idea and make a billion pounds?
Money attracts politicians. Being a billionaire will make you politically powerful.

Then you could be the one pulling the political bullshtrings.


-------------------------------
As always, a song pops into my head:
Would you like to see Britannia Rule again, my friend?...Pink Floyd
Thanks for being from GB, btw.

 

[russ_watters]

Really? I thought the coal deposits in the Earth and the usable radioactive elements deposits in the Earth are finite, or at least don't renew themselves fast enough.

Finite, but very, very long-lasting. Admittedly not a great source, but here's one on coal that says 112 years with currently known sources and current rates of production in the world. That's more than twice similar estimates for oil and natural gas. http://www.worldcoal.org/coal/where-is-coal-found/

That's a long enough time that predictions about what the world looks like then is very difficult, but given the unpopularity of coal in developed countries and the recent drastic drop in American coal electrical production, it may go unused for a very long time.

Nuclear's longevity is much, much longer. Hundreds? Thousands? Tens of thousands of years? Depends on what assumptions you use: http://www.scientificamerican.com/article.cfm?id=how-long-will-global-uranium-deposits-last
Right now we are being very wasteful with our nuclear fuel usage because of the economics and politics of recycling and making breeder reactors, but as the cost goes up, the economics will get better, which adds orders of magnitude to nuclear's longevity.

In either case, since the fuel will last through several new generations of power plants (50-75 year lifespan), the longevity is way too long to factor into our energy decisions today.

Conversely, the stability of other fuels will have big impacts on our coal and nuclear usage. If you strip away the scaremongering, "Peak oil" does indicate potential supply constraints and vastly changing economics. Ironically though, we are currently seeing the opposite "problem": the explosion of American oil and gas production has driven down prices. As a result, a power company that built a coal plant 5 years ago may be kicking themselves due to the crash in gas prices.

 

[russ_watters]

It's difficult to understand if there is an actual energy "crisis" or that it the whole thing is just politicts.

There are several classes of problems. In no particular order:
1. Resources
2. Politics
3. Population/development
4. Engineering/technology

Though as an engineer, I may prefer to call engineering a solution, not a problem. Or -- a problem is just a solution that hasn't been found yet.

Where I live GB.

By the way, to answer a previous poster who was less cordial about it, I posted this from an American perspective because:
1. I'm an American.
2. This forum is hosted from America and has a mostly American membership.
In addition:
3. As the world's largest energy user, any problems are more American problems than anyone else's.

But I do not intend to limit this discussion to American problems. Every country has problems, some similar and some different.

there are finacial incentives to insulate your home to save energy and disincentives if you don't which seem reasonable.

Agreed, and it is similar here, with building codes and home improvement incentives.

However automobile and comercial vehicles escape.I don't know what your vehicle uses but I know mine uses more energy than my house. So how come the automotive industry avoids legistlation to save energy yet households don't.

I'm not sure if fuel economy standards exist in the UK, but because of the wide variety of cars and driving conditions, it is difficult to mandate simple standards. The UK maintains higher car fuel economy than the US though, via a simple method: fuel taxes that are 6x higher than in the US.

I don't just wan't to imply that the engine could be insulated but the cab and battery etc.
So tell me I am wrong!

There isn't much that insulation can do for a car. The engines are actually designed to lose heat as quickly as possible to avoid damaging themselves. However, improvements that enable them to get up to operating temperature faster can have a big impact.

 

[OmCheeto]

...There isn't much that insulation can do for a car. The engines are actually designed to lose heat as quickly as possible to avoid damaging themselves. However, improvements that enable them to get up to operating temperature faster can have a big impact.

I disagree. See my very first PF thread. I've been developing the idea since then.

Insulating the engine, and extracting the waste heat energy is one part of the 11 part hybrid I'm working on. Patent to be filed within the next 24 months. Unless of course, Buckymanor takes my cue, and does it first. I may have to cut a deal with the Bavarians. I would imagine they've patented their turbo-steamer idea.

And in honor of Chroot, I'm adding a pedal option. I don't see any good reason to just sit there at a stop light. Might as well get some gym time in.

 

[mheslep]

...
3. As the world's largest energy user, any problems are more American problems than anyone else's.

...

That day has come and gone. Among large countries, the per capita energy use prize now goes to Canada, while Australia is atop the per capita carbon centric energy usage (via coal).

 

[Buckleymanor]

There isn't much that insulation can do for a car. The engines are actually designed to lose heat as quickly as possible to avoid damaging themselves. However, improvements that enable them to get up to operating temperature faster can have a big impact.

I disagree also.
I realize there is an optimum level at which the temperature should be kept and that the temperature should not rise too much above this or damage will happen to the engine.
Insulation of different types and placed at different locations could enable the operating temperature to be reached faster and the heat generated could be retained for longer.
An engine that can retain heat will get up to operating temperature quicker.
A cab that is better insulated requires less heat from the engine in winter to keep warm than one which is not which results in the uninsulated one requireing more fuel.
The same applies to air con in the summer months.
More cab insulation the less work the air con unit has to do.

 

[OCR]

I'm looking for the most efficient vehicle of course.

It was, and still is... with respect to improved engine efficiency.

http://en.wikipedia.org/wiki/Bourke_engine
http://www.rogerrichard.com/4436.html ← Just has to be a Labor of Love...

http://en.wikipedia.org/wiki/Six-stroke_engine
http://www.autoweek.com/apps/pbcs.dll/article?AID=/20060227/FREE/302270007/1023/THISWEEKSISSUE
http://en.wikipedia.org/wiki/Combined_cycle

http://en.wikipedia.org/wiki/EcoMotors
http://www.ecomotors.com/
http://www.pattakon.com/pattakonPatOP.htm

http://en.wikipedia.org/wiki/High-Efficiency_Hybrid_Cycle
http://www.liquidpiston.com/technologycycle/tid/2.html

http://en.wikipedia.org/wiki/Scuderi_Engine
http://www.engineerlive.com/Design-...ines_promise_an_increase_in_efficiency/22066/

The engine folks were already working on this, when I got my A&P certificate back in 1973.
http://en.wikipedia.org/wiki/Camless

The camshaft is probably the biggest technological stumbling block left, that prevents an almost totally 'tunable' piston engine.




OCR

 

[AlephZero]

I'm not sure if fuel economy standards exist in the UK, but because of the wide variety of cars and driving conditions, it is difficult to mandate simple standards.

It's easy enough to mandate a simple standard, and the current one is even on track to be met: average CO2 emissions for cars in the EU, of 130 g/km by 2015.

The next target after that one is 95 g/km for cars and 147 g/km for vans, by 2020.

http://www.transportenvironment.org/events/driving-future-vehicle-fuel-efficiency-standards-2020

In the UK the "carrot" for car owners is a graduated annual vehicle license fee, e.g.
£30 for 110 - 120 g/km
£100 for 120 - 130
and rising in increments to
£475 for worse than 255.

 

[OmCheeto]

It was, and still is... with respect to improved engine efficiency.

http://en.wikipedia.org/wiki/Bourke_engine

Don't mean to roll on the floor, but, 1920, vaporware?

(If it takes more that 90 years to bring an idea to market, even once, then there might be something wrong with the idea.)

-----------------------
ps. I said vehicle, not engine. They are not the same.

 

[OCR]

Don't mean to roll on the floor, but, 1920, vaporware?

Lol... yes, Russell Bourke probably should have received the Golden Vaporware award, and I shouldn't have linked to it as an example of possible evolving engine technology.

Bourke's design is however, very similar to that of EcoMotors...

http://www.ecomotors.com/technology
http://en.wikipedia.org/wiki/EcoMotors
​

And... Uncle Bill does seem to have a slight involvement there...

The two primary investors in EcoMotors are Khosla Ventures and Bill Gates.

Maybe it's time for his next... Golden Vaporware award? ...

This was in reference to the post date of your first thread, not Bourke.

I'm looking for the most efficient vehicle of course.

It was, and still is... with respect to improved engine efficiency.

Also, to your image link: http://home.europa.com/~garry/energy split.JPG



OCR...



-----------------------
ps. I said vehicle, not engine. They are not the same.
I know... ↑ ...as well...↑...but of course...↑

 

[Buckleymanor]

Why don't you patent your insulated engine, cab, battery idea and make a billion pounds?
Money attracts politicians. Being a billionaire will make you politically powerful.

Then you could be the one pulling the political bullshtrings.

I like money, being a billionaire sounds very attractive but the downside would be the attention of politicians I don't think I would like to encourage them.
On the other hand.

 

[johnbbahm]

The camshaft is probably the biggest technological stumbling block left, that prevents an almost totally 'tunable' piston engine.
OCR

Several years ago, I had lunch with a friend who works at a university in Germany.
One of the things they were working on was an voltage activated valve stem for
Diesel engines. At the time he said they were getting close to Carnot efficiencies.

 

[Low-Q]

Insulating the engine, and extracting the waste heat energy is one part of the 11 part hybrid I'm working on. Patent to be filed within the next 24 months. Unless of course, Buckymanor takes my cue, and does it first. I may have to cut a deal with the Bavarians.

This is a very good idea. The bigger difference between hot and cold, the better the engine runs. Very important to harness waste heat, but primarily from the hot exhaust.
However, with the wrong fuel at the wrong temperature, it might detonate before the piston reach the top.


You might increase efficiency further with a pistonless engine - not the Wankel engine, but a design more like a gerotor design which is 100% rotary, which is 100% vibration free. I believe it is just a matter of fairly simple engineering to make this work well. See picture of a gerotor. This type of pistonless motor can suck in air and gas, compress it, ignite it. It needs valves as a piston engine does.

.

It can be made as several rotary "discs" so the exhaust is efficiently cooled before it leaves the engine. The best of this design is that the exhaust side can be cooled separately with coolant flowing between them (separate from the combustion side) for as long the volume inside decrease, but at the same time the combustion side keeps hot for as long as the volume expands during combustion. This is exactly what we want with a heat engine like this.
A normal cylinder have very little cooling surface compared to the volume inside it, so the exhaust is still pretty hot when it leaves the cylinder - > poor efficiency.

So increasing the efficiency of 20 - 25% for a normal engine, to maybe 40 - 50% for a gerotary engine, would not only reduce pollution and cost due to efficiency, but also save weight - which result in even lower fuel consumption.

If this doesn't save the world alone, I hope my contribution would be helpful - at least triggering some ideas

Vidar

 

[Felchi]

Well, doesn't the act of running coolant through the discs use energy?

If you add the energy needed to run the coolant system to the efficiency equation, is it still 40-50%?

 

[Low-Q]

Well, doesn't the act of running coolant through the discs use energy?

If you add the energy needed to run the coolant system to the efficiency equation, is it still 40-50%?

A piston engine haven't poor efficiency because of the coolant flow.
The coolant isn't flowing through the rotating parts. Only through the housing mass between somewhat like coolant in a piston engine flows though the block and not through the piston and cylinder

 

[Low-Q]

Gerotor engine explained as I imagine this will work. It would probably be possible to do more than one operation at the time. For example start the intake again at the bottom while it is combustion. And start combustion while there is compression - it right order, somewhat similar to a 5 cylinder radial engine.

Remember this is just an idea I have, that hopefully will reduce pollution and costs.

http://www.lyd-interior.no/Technical/gerotor-engine/gerotor-engine_intake-compression-web.jpg

http://www.lyd-interior.no/Technical/gerotor-engine/gerotor-engine_combustion-exhaust-web.jpg

http://www.lyd-interior.no/Technical/gerotor-engine/hot-cool-side.jpg

 

[OmCheeto]

You might increase efficiency further with a pistonless engine - not the Wankel engine, but a design more like a gerotor design which is 100% rotary...

If this doesn't save the world alone, I hope my contribution would be helpful - at least triggering some ideas

Vidar

I can't seem to find a working model of a gerotor motor.
I found a Forum where the President of Star Rotor talked about it's development. Dated 2004.
9 years later, the Star Rotor engine is apparently still under development.

hmmm... Wiki claims the gerotor dates back to 1787.
2013-1787 = 226 years.

I think I'll call this one vaporware also.

And I think I'll stick with a water cooled diesel engine as my prime mover, as I'm still a big fan of Algae derived fuels.

 

[zanes]

I read your thread, and agree that nuclear electricity generation should be the ultimate answer. Good luck with that politically. I would like to offer a painless and inexpensive way for us to reduce significantly our use of fossil fuels for vehicles...eliminate unnecessary stop signs, and where necessary install yield signs.

In my small condo complex (200 units) there are 8 unnecessary stop signs. Most of the units have 2 cars. If each car leaves the complex twice daily and has to stop at at least 2 of these signs, this is 800 unnecessary decelerations from 20mph to 0, and then accelerations to 20mph. I have no idea how much gas is wasted, but suspect it must be thousands of gallons (low thousands) annually. How many stop signs could be eliminated nationwide? Don't know that either...probably millions.

Whatcha think?

 

[AlephZero]

I can't seem to find a working model of a gerotor motor.

If you look at the drawings in this thread, it's not hard to see why IMO.

Assuming the working gas is a uniform pressure at each instant in time, figure out the directions of the resultant forces on the two rotors. Then convert those force directions to torques about the central axis.

Compare with a Wankel engine, or a conventional piston engine, and see which design wins in converting the same gas pressure into useful work.

Of course that reasoning why a gerotor would make a poor engine is the exact same reasoning why it makes a good fluid pump.

 

[OmCheeto]

If you look at the drawings in this thread, it's not hard to see why IMO.

Assuming the working gas is a uniform pressure at each instant in time, figure out the directions of the resultant forces on the two rotors. Then convert those force directions to torques about the central axis.

Compare with a Wankel engine, or a conventional piston engine, and see which design wins in converting the same gas pressure into useful work.

Of course that reasoning why a gerotor would make a poor engine is the exact same reasoning why it makes a good fluid pump.

Well, I was going to say all that*, but not being able to turn an oil pump, into an engine, struck me as a deficiency, in my own brain.

As usual, thank you Aleph, for getting me out of the mud.

----------------------------
*Ok. I lied. I would have never said that. But if I were as smart as you were, I would have.

 

[Crazymechanic]

Hello there

Ok even without the gero engines and all other interesting but useless crap we can make a oil consumption reduction and also the reduction in the green house gasses.
What I'm about to say , well if russ wants to ban my post for that fine as not being too scientific but we should remember that the way we live and our energy demand , usage goes hand to hand not only with what science can offer us, but also with our thinking and in what we believe in.For example we have to end the childish thing about those huge v8 v10 or whatnot, those times are over now we have to grow up and start to think rationally.
For a everyday car , a car that is used as a means of transportation from point A to B there is no need for unnecessary bling blings , chromes , huge loud engines and so on , I'm not pushing anybody to buy a german product and I am not german myself but we have to admit they make quite nice and advanced cars and you can have a 1,9 tdi (turbodiesel) or like I had 1,6 gasoline and use like maximum 6/7 liters per 100km. and that is 5 people in a car driving at speed up to 120 km/h. Also LPG is worth consideing, my friend drives and LPG car and he gets like only half the money he was putting in while on gasoline.
So firstly we need to put our big toys in the garage for hobby hours and weekends and in everyday traffic use only as much fuel and capacity as we need not bigger.
I think it is a huge waste of resources and the car itself if one guy is driving around in a dodge ram without any stuff to bring with him and yet I have seen guys like these even here in europe.
So firstly we have to stop our selfish thinking and use the resources we have right now as careful as possible.

Speaking about nuclear , I am totally with Russ on this.There is nothing bad about it , again it's not the things that are bad or good it's us.Things are just things.Nuclear reactions happen everywhere in space, we are alive because of them in the sun, and if we act like grown ups with responsibility and extreme care we can have them here on Earth with no problem.
I think nothing much will change unless there will be huge campaigns to educate the general public about all the myths and stupidity they believe in.They should be told that mcdonalds is doing a lot more harm to their health than an average nuke plant somewhere there in the world. Also I think the general public skepticism about the nuclear thing is also due to the fact that when something happens with a nuclear power station it makes the national news around the world big time.Everybody's counting the injured and spreading fear with no scientific backing on the facts.
Yet the bad stuff that comes from burning coal and fossil fuels it is happening over long long periods of time and there is no such sudden blast and maybe that's why people are not aware of the dangers.
Someone should make a study even though it would not be an easy one if possible at all about the impact on nuclear power vs the impact on coal and fossil , I think speaking of dollars that went to clean up the places were something went wrong the fossil fuels wins.

To summarize we have to change our way of thinking mostly and then the energy things will come after that.And no offense to russ or anyone else but the days are over when someone could just say that well this is an americam problem or thing, no it's the thing of the world it's not like we would live galaxies apart.
At the start of this thread you threw some billion numbers around for the plans needed to come.Well if we could stop the wars for a while both the muslim side the american side and all other imagine how many billions of dollars could be used for fusion research and development.Firstly it's all in the head.As long as crazy little people will run around with waving guns and some other not so crazy people will try to stop them it will be like playing hide and seek , huge money is being spent , news , media are wasting tons of paper on it , people are wasting their time watching this whole thing while he lonely deuterium atom sits and is being bored because nobody is ready to give him the money and resources needed for him to reveal his "magic" as soon as possible.and those are billions of dollars spent on weapons , war and all the fuel and resources needed for that.Atleast the cold war was more useful in this way as it tried to deliver better and better newer technologies from both sides.And it somehow took us to the space (USSR) and later to the moon (USA) also the russians developed the tokamak fusion device , I'm not sure if it was meant for military purposes in the first place but now it is the base for ITER and what is going on right there.
Right now were just fighting over some guys with a strong belief in the middle of the desert and with lots of oil beneath them that yet is no an answer to our problems in the long term more like a bandage for the already dead body.

Speaking about solar and wind , well I personally think wind power could be used on farm and countryside were the visual impact and space is much more affordable things.Also solar panels on farms roofs why not.That would put the electric grid power more to the populated areas like cities and factories where the power is really needed and lots of it and where a solar panel or a wind turbine would not be an option.

 

[Low-Q]

Thanks for wise words Crazymechanic. I'm afraid money is controlling where we're heading.

One of the problems with converting to fuel efficient engines, is the cost of conversion, cost of a new car with this technology. Not expencive because of difficult technology, but because manufacturers know the price of the alternative, and turns up the cost till the break even point.

Maybe I'm a bit paranoid, but let me range the top three major economical interests on the planet:
1. Weapons
2. Drugs
3. Oil

What WE can control (For a while) is, as you say, don't use big engines on big heavy cars.
Acceleration of mass is consuming gasoline we cannot get back by retardation - like electric cars mostly does. Stramlined cars is also a good thing. But again expensive design (Even if it does not cost more to make a good looking car vs. an ugly car).

If you don't NEED to use the car, then use a bicycle, take a walk. Get your clothes on and keep the indoor temperature as low as possible if its cold outside. Take your clothes of if it is too hot in the summer, and stop the air conditioning for a while or two. Take the necessary time in the shower. If you use the bath tub, don't poor out the water before it has reached room temperature. Keep non-living rooms cool, turn of the lights. Air dry the laundry.
Everyone already knows this ofcourse, but do it more often if you want to see results.

Vidar

 

[Low-Q]

If you look at the drawings in this thread, it's not hard to see why IMO.

Assuming the working gas is a uniform pressure at each instant in time, figure out the directions of the resultant forces on the two rotors. Then convert those force directions to torques about the central axis.

Compare with a Wankel engine, or a conventional piston engine, and see which design wins in converting the same gas pressure into useful work.

Of course that reasoning why a gerotor would make a poor engine is the exact same reasoning why it makes a good fluid pump.

It is just a matter of will and minor engineering to make this an efficient engine. Positive displacement engines already exist in pneumatic powertools, however the air/diesel/gasoline mixdure is sucked in, compressed and combusted in one revolution instead of having supplied high pressure air from outside. The combustion is the pressure which runs the motor - just like in any piston engine. I'm not saying this is a good idea, just an idea that will work with as few components as it is possible to have in an engine - two rotating parts with two different central axis in order to make torque possible.

Vidar

 

[Crazymechanic]

Well weapons is both an interest for nations security and also for the criminal world but there is a big difference.
Drugs , well whoever considers that a business has failed since the very thought came into his mind.Drugs , weapons sales and human trafficking are the kind of business which is done by people who either have no better brain to achieve something in other more complicated fields like science or who just care for a lot of money but are not ready to sacrifice something from their own life, like learning and knowledge.This thread is not about those reasons but I must say that the human selfishness is playing a large role not only why we have wars and all kinds of criminal activity in the world but it's also playing a large role in the energy crisis , because energy is just as much as it is the resources are finite and we have to use them responsibly.
There is another issue that right now we are still living in a consumer type oriented society I think the future will bring changes to that as we have to realize that sharing and cutting your self comfort is not only because prices for that comfort like energy will be higher but also the environment will and is already showing signs of that.


Speaking about the engine you presented @Low-Q I really don't think it will work with much efficiency nor do I think that it is some kind of alternative to anything.
Honestly speaking we can ofcourse imagine that one day people will wait for water to completely give it's heat off to the room or turn of air conditioning just to enjoy a few extra degrees and stuff like that but let's be real the general public doesn't live, hasn't lived and probably won't live like that.There are many reasons for that I won't go inot them now but fact is fact.
I think we have to use the resources we have right now with as much care as we can while we haven't invented better ones.
Speaking about electric cars there are two factors in play the first one is how do we make the battery or energy storage technology so great that the mileage and recharging is atleast slightly comparable to that of existing gas/diesel engines.
The second problem is how do we produce the electricity in future.If we just introduce clean electric cars to the public but still continue to produce that electricity in coal power plants it is then useless to have an electric car, as the electricity is coming from a "dirty" source.
basically real time physics is no wonderland I think the best we can is to maximize the energy output of solar panels and use them in our building designs and house roofpanels.
Top use wind power in countryside where it does not hurt that much to have a large spinning blade up in the sky.
Use nuclear power for the main grid , new generation safe nuclear reactors.No problem.
And as long as we have fossil fuels with us keep them as efficiently used as possible stop the power is cool thing and just use them as careful as we can, I think the price of the oil and the problems associated with it will regulate the usage themselves, they already are doing that.We all know there will be no more cheap oil so we have nothing but to start to understand that and count our options.
Also we could use more LPG in our vehicles as gas produces far less pollution when burned and is also cheaper to drive atleast for now.
And then there is FUSION ofcourse but for now on we still have like some 30 years for the real deal if there ever will be one.Sad to say but just because we know how it works and have made it to blow in a H bomb doesn't really help that much making it a viable and real source for civil electricity purposes.One day ofcourse the questions is when that day is going to come and how are we going to live and change our mindsets till that day.

 

[Felchi]

Funnily, I haven't heard much discussion about geothermal or tidal energy. While nuclear has few advantages we have to keep in mind that there are risks associated with it and acting like "grown ups with responsibility and extreme care" won't erase human error.

As a side note, why do power plants allow steam to turn turbines and then escape into the atmosphere? Can't they have the steam condense and pour it back down into another set of turbines? Wouldn't this recycle the water used?

 

[Most Curious]

You are mistaken. Nuclear and fossil fuel power plants DO recover the turbine exhaust and condense the steam, recycling the water. That water is super pure and a fair amount has been invested in processing it. The condensers are actually good enough to pull a vacuum on the turbine outlet. Geothermal plants are a bit different and I do not know enough about their cycle to comment.

Tidal? So far no practical and effective method has emerged to capture much of that energy. Geothermal is very location dependent. Not all that many places that it is practical. Same for hydro.

In practical terms, fossil and nuclear are likely the primary source of electrical energy far into the future.

 

[OmCheeto]

...
Tidal? So far no practical and effective method has emerged to capture much of that energy. ...

I watched a video of Chris Hadfield this morning. He said something to the effect, that we are in a transitional period. (His comment was totally unrelated to the energy crisis, but everything I see, hear, and think about, is a metaphor for something else.)

One only needs to have the will, and the energy will be captured.

Of course, one needs waves.

Kitzhaber Thanks LCDC, Stakeholders For Adopting Guidelines On Limited Wave Energy Development

By Albany Tribune -- (January 28, 2013)

With the LCDC’s decision, Oregon’s Territorial Sea Plan now guides the siting of wave energy and other forms of marine renewable energy to areas that pose the least conflict with existing ocean uses and natural resources.

-----------------------
Besides being our governor, John also serves as the director of the Center for Evidence Based Policy.
I like the idea of evidence based policy.
I like to think that that is the reason I voted for him for governor.
I would like to see him run for president one day, but he likes blue jeans.
I'm not sure he would like Washington DC, nor they, him.
Though he did get invited, and accepted the invitation to, the president's inauguration.
He got to sit with Michelle.

 

[Crazymechanic]

The thing is we need something that can produce a lot of energy in a small as possible space.
If the amount of people on this planet would be like a 50 million then we could have wind farms and solar panels all around the globe but that is not the case.
We have to somehow manage to produce the needed energy in a small space.Pretty much nuclear is the answer.
Ofcourse there is a chance of human error but then again we all have to pay for our mistakes that's just the way this world operates.
There is no free path to happiness someone always has to sacrifice something even his life in some cases.Well that would go into philosophy that's why I'm about to leave it there.

 

[Felchi]

Isn't there an issue with nuclear waste?

 

[Crazymechanic]

in terms of radioactivity and danger yes.
But in terms of the waste amount vs. the energy that it produced it's a winner.
By the way I'm pretty sure that waste can be reproduced and used as MOX fuel , it's rather a political thing not so much of a science problem.

 

[Felchi]

Not to be overly sadistic or cynical, but in that case the solution would appear to be:

1. Place nuclear power plants in isolated, uninhabited areas e.g. the Sahara and other deserts

2. Place nuclear power plants in obscure, poor communities where acccidents can easily be covered up.

3. Place nuclear power plants in Third World Countries where workers can be outsourced and if something catastrophic happens, most of the world won't care. Which is sad, but likely.

Drawing power from various sources (e.g. wind, tidal, geothermal) seems to be a good idea, as to prevent excessive reliance on one power source.

 

[OmCheeto]

Not to be overly sadistic or cynical, but in that case the solution would appear to be:

1. Place nuclear power plants in isolated, uninhabited areas e.g. the Sahara and other deserts

2. Place nuclear power plants in obscure, poor communities where acccidents can easily be covered up.

3. Place nuclear power plants in Third World Countries where workers can be outsourced and if something catastrophic happens, most of the world won't care. Which is sad, but likely.

Drawing power from various sources (e.g. wind, tidal, geothermal) seems to be a good idea, as to prevent excessive reliance on one power source.

Your post strikes me as what is already going on across the globe.

And this also reminds me of an incident where a PF'er and I came to have a severe disagreement. Being that we are both advocates of Nuclear energy, I found it a bit difficult to call him out on what I've always considered one of my pet peeves: "Not in my backyard"

I do not have a problem with the closure of Yucca Mountain. I also don't have a problem with keeping Nuclear waste on site, in the facility that generated it. I understand that there are financial considerations, but I don't like(aka: hate) the idea of shipping one's problems "somewhere else". (google "7th generation"...)

I'm pretty sure I disagree with 99% of the people in my state, when I say that I have no problem with drilling for Natural gas off of our coastline. Canada is being shredded for its precious "Coal Tar" oil. I personally find it obscene. But people in my state run around in gasoline powered cars everyday, and they're now saying; "We shouldn't let train loads of coal run through our state, to export to China, because, it's dirty", makes me want to puke.

I don't like hypocrisy.

--------------------
ok to delete.

ps. only 450 days, until, "something wonderful" happens.

 

[russ_watters]

Not to be overly sadistic or cynical, but in that case the solution would appear to be:

1. Place nuclear power plants in isolated, uninhabited areas e.g. the Sahara and other deserts

Conspiracy theory nonsense aside, I don't see how this follows. Coal power kills roughly 15,000 a year in the United States alone, 170,000 people globally. The worst that can be said about nuclear power is that it likely killed a few thousand people due to excess cancers from Chernobyl, but these are un-provable as they are too small and widely dispersed to be extracted reliably from statistics.

There are no accident scenarios possible that can bring nuclear power into the same order of magnitude, even if we increase it by an order of magnitude to provide most of the world's power. Not even an annual Chernobyl or Fukushima would do it.

So far, wind and solar have killed more than nuclear has!
http://www.forbes.com/sites/jamesconca/2012/06/10/energys-deathprint-a-price-always-paid/
[edit] I read those numbers wrong - those are deaths per trillion kWh. They are normalized to account for differences in production. The US makes about 2 trillion kWh in coal power per year.

Also, these numbers include deaths by workers during construction, mining and production of the power.

 

[Redbelly98]

1. Place nuclear power plants in isolated, uninhabited areas e.g. the Sahara and other deserts.

Locating them in the desert would make it difficult to supply the water that is to be heated.

 

[mheslep]

Locating them in the desert would make it difficult to supply the water that is to be heated.

Yes, for the current Rankine cycle, low temperature designs. But high temperature reactors are theoretically possible and they could work on a Brayton cycle without water.

 

[mheslep]

Yes, for the current Rankine cycle, low temperature designs. But high temperature reactors are theoretically possible and they could work on a Brayton cycle without water.

Interestingly a high temp experimental reactor has recently been approved - the HT3R in Texas.
http://en.wikipedia.org/wiki/HT3R

 

[Traxfam]

Here is a different type of plan to fix the energy crisis, best of all it doesn't require any new technology (in the long run it would drive technology change). In three easy steps.

Step 1: Tax Coal at 10%, Natural Gas at 2%, all other fossil fuels somewhere in between depending on carbon emmissions, renewable carbon sources (biomass, ethanol, biodiesel, methane generated from renewables, etc) would be exempt from the tax.

Step 2: Tax goes up by 1% per year

Step 3: 60% of revenue generated is used to finance non carbon renewables in the form of tax credits, 20% is used to finance research into noncarbon alternatives, and 20% for administrative cost.

 

[USAGeorge]

Forget about solar and windmills fund led lights,USA made by subsidy and regulation...
Lighting is apx 17% of electric use and LED lights use 90% less energy. That translates to a 15% reduction of electric use for every household in the USA. Energy problem resolved for the near term.