Steam Definition and 516 Threads

Hello folks I am building a reaction vessel that will have an inbuilt condenser for a design project at the Saint Martiin`s school of fashion in London. Problem is, I know nothing about physics. would anyone help me out on what and how I calculate the necessary elements that will prevent the...

Looking at the steam tables I see that the entrolpy of steam at a constant temperature increases with a decrease in pressures. As an example, Steam at a temperature of 1000 degrees has an entrolpy 1520 @ 500 PSI. The same temerature steam at a pressure of 2000 PSi holds less energy...

Has anyone heard of a gasoline engine that instead of using a water jacket for cooling, uses a spray of water to cool the cylinder? I was thinking along the lines of installing a bank of water spray injectors around the cylinder to remove the heat, which creates steam which can be further heated...

Another URGENT HELP problem: Steam to Ice Homework Statement How many J of energy must be removed when 127.0 g of steam, at a temperature of 153.0°C, is cooled and frozen into 127.0 g of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K). Homework Equations Q1 = mc(delta...

Homework Statement How many J of energy must be removed when 145.0 g of steam, at a temperature of 188.0°C, is cooled and frozen into 145.0 g of ice at 0°C? Take the specific heat of steam to be 2.1 kJ/(kg·K). Homework Equations Q=m*L The Attempt at a Solution Energy =...

i want to know which type of thermocouple is used in measuring superheated steam temperature coming out of boiler? this temp sensor is used in accordance with desuperheater to reduce the temperature of excessive superheated steam... can u provide with its range, accuracy, and resolution

I have this problem, but I could not understand. pls help Steam at 100 degree celsius is added to ice at 0 degree celsius. The mass of the steam is 10 g and the mass of the ice is 50.0 g. What is the final temperature of the mixture? thanks a lot.

I have my solar power planned out...1200 2 inch mirrors on plywood that will be aimed at the sun and will have a focal pint about 4 feet from the board. i know how to make the steam system but i haven't a clue how to make a working turbine to create electricity. (steam will be the way of...

Hi, I was just wondering if anyone had any advice on sources of steam ejector design principles. I've seen one textbook on the topic of steam ejectors that is now out-of-print, and haven't been able to find any suitable online resources (generally, they're very basic and don't quantify much...

Would it be possible to build a steam engine using parts made primarily of carbon fiber? Any engine?

We have this heat exchanger installed in our plant. There are two modules. In module-2 saturated steam is entering @200 Deg C and heating the air from 40 to 80 Deg C. Condensate from module-2 is given to module-1 which preheats the air entering in module-2 from ambient temp (30 Deg C) by 10 Deg...

How much heat must be added to 120g of water at an initial temperature of 60C to heat it to the boiling point? completely convert the 100C water to steam? Specific heat capacity of water = 1.0cal/g-C It would take 120*1 to raise 120g of water up to 1C difference in temperature = 100C -...

Homework Statement What mass of steam at 100 degree celsius must be passed into 5.4 kg of water at 30 degree celsius to raise temperature of water to 80 degree celsius? Homework Equations C(water)=4.2 J/(g C) L(steam)=2268 J/g The Attempt at a Solution Assuming no heat loss...

Homework Statement The flywheel of a steam engine runs with a constant angular speed of 156rev/min. When the steam is shut off, the friction of the bearings and of the air brings the wheel to rest in 2.20h. What is the tangential linear acceleration of a particle 52.4cm from the axis of...

Hello again...i was wondering if you can help? I am using enthalpy equations to try and find h1 and h2 to work out 'work and heat transfers' for water, for a piston type question. I have calculated work done using: [w = -PDV] To find the heat transfer i need to use: [Q=m.(h2-h1)] i...

Any such thing as "small steam turbine"? I've a C-Band satellite dish. I'm going to attach 2" mirrors to the entire reflecting surface and aim it at the sun. Where the feedhorn was, I'm going to design some type of coil to pump water through which the focused sunlight will boil the water...

Hi guys been given the following as some home work, haven't got a clue really its a bit confusing! Steam ar 40 bar and 400C enters the high pressure turbine of a steam power plant at a rate of 20kg/s and explands to a pressure of 3 bar at which point it is just dry saturated. at this point...

Mmmmm... why only steam is used in a steam ejector for creating vacuum and not anything like air or other inert gases...:confused:

Which one would you prefer? Steam reformer: CH4 + H2O -> CO + 3H2 CO + H2O -> CO2 + H2 Dry reformer: CH4 + CO2 -> 2CO + 2H2 1) The SR uses steam injection, the DR doesn't have steam, which can be good. 2) The DR doesn't yield much H2 for a given amount of CH4... And the...

Homework Statement The flywheel of a steam engine runs with a constant angular speed of 137 rev/min. When steam is shut off, the friction of the bearings and the air brings the wheel to rest in 2.7 h. What is the magnitude of the tangential component of the linear acceleration of a...

Homework Statement The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.35 rad/s^2. It accelerates for 33.1 s, then maintains a constant angular velocity. Calculate the total angle through which the wheel has turned 47.5 s after it begins...

Homework Statement .15 kg of steam at 100 degree Celcius is mixed with .2kg of water at 50 degree and .2 kg of ice at 0 degree. Determine the final temperature and phase(s) of the final state. Assume that no energy is lost to the surroundings. Homework Equations The Attempt at a...

I want to build a Thermopile to generate usable electricity with a heat source, like a small fire or something, I can build something like this but, I only get 1 mA and an ant of a volt. And it subjected to 1700C blow torch, it sucks. So does anyone have some info about that, would be nice...

Given: cp, ice = 2090 J/ kg . Celsius cp, water = 4186 J/ kg . Celsius cp, steam = 2010 J/ kg . Celsius Lf = 3.33 x 10 ^5 J/ kg Lf = 2.26 x 10 ^6 J/ kg How much energy is required to change a 38g ice cube from ice at -13 degrees C to steam at 113 degrees C? Answer in units of J. I...

I found this the other day and was wondering if it could work. If nothing else it is an interesting concept. http://www.keelynet.com/energy/microeng.htm"

Homework Statement How much energy does it take to transform 500 g (0.5kg) of liquid water at 20 oC to steam at 100 oC? Note that the specific heat capacity of liquid water is 4.28x10^3 J/Kg/oC and the latent heat of vaporization for water is 2.3x10^6 J/Kg. Homework Equations Eh=mct ...

Hi, I was told that there was an inherent torque advantage to using a piston design over a turbine design (in this case for steam). I said I doubted there was any theoretical reason why this would be true, it would all depend on the design of the engine. My argument was that most turbines in...

A 55 g ice cube at 0°C is heated until 40 g has become water at 100°C and 15 g has become steam at 100°C. How much energy was added to accomplish the transformation? I tried using Q=mL for each change and adding them together. Q=.055(3.33x10^5) Q=18315 then Q=.015(2.26x10^6)...

Please someone help me with my homework :D i have tried and tried but i just suck at science 1. To turn 50g of boiling water to steam requires A. 50 Calories (210 Joules) B. 500 Calories (2100 Joules) C. 540 Calories (2270 Joules) 2. If you were caught freezing in cold weather...

Steam enters a turbine at 3 mpa and 450 c, expands in a reversible adaibatic process, (KE and PE are negligible) and exhausts at 10 kpa. The power output of the turbine is 800 kW. What is the mass flow rate? I did the problem but I don't know if the anwser is correct and wanted to check...

Hi All, I am a solar thermal enthusiast seeking to try out a few things. I need some info on using car aircondition compressor as a pico steam turbine if it is possible. Links, suggestions and opinions are welcome. Regards, Solomon.

Could say a three rotor wankel engine run efficiently on steam? If heat heat loss was kept to a minimum may be by ceramic coating the rotors and chambers, i know some valving system would be needed to pass steam from the high pressuer chamber to the LP chambers, seems to me that i would have a...

I have in mind to build a super light steam car, my aims are 40/50 mph, no creature comforts, runs off cheap farm fuel or even waste chip shop oil, steam powered cars are not taxable, start with a modest range of 60 miles or so, other advantages are, no gear box, a go and a stop peddal, light...

I will start my junior year as a ME major in the fall, I currently am working for a power company on a co-op. I work with the Predictive Maintance department corporate so I am not at the plant all the time but have a question about the turbine that might be more of a generator question. If...

My textbook shows a PV diagram for a steam engine with the pump stage having no change in volume and with only a vertical increase in pressure. How can that be done. I can only imagine pumping a substance by pushing it inwards hence increasing its pressure but also reducing its volume. How can...

Which gives the more sever burn, water or steam both at 100°C? I think it is the steam because it has more kinetic energy in it, as the water molecules have broken the bonds of the liquid and has a lower specific heat capacity, but I would like some confirmation, or if incorrect the right answer...

Need some help here please, Steam at 2000 Kpa and 250 degree centigrade is expanded isentropically to a pressure of 550 Kpa. Determine the a) dryness fraction of steam b) change in specific enthalpy of steam

does anyone knows what are the advantages and disadvantages of using a superheated steam cycle (i.e. effect of turbine blade)?

Hello to all, this is my first post on this forum. I'm electrical engineer (technical informatics) but in my spare time I'm interested in thermodynamics especially about steam cycle in power plant. I know that condenser is meant to convert steam to water and here we have pure losses of...

A steam turbine has an inlet of 2kg/s water at 1000kPa and 350C and velocity of 15m/s. The exit is at 100kPa, 100% quality and very low velocity. Find specific work and power produced. I have done a lot of these problems but it usually says adiabatic or the inlet and exit temp is the same...

Hey. I wasnt sure where to post this, since it isn't an actual question i need to complete for school, but it relates to it. When my year 11 physics class was solving the final temperature of an ice/steam mixture, my teacher kept talking about how energy is transferred too AND from the ice...

What do you think of this crazy looking engine. http://www.greensteamengine.com/ And a steam engine that powered an aeroplane. http://www.tinypower.com/airplane.htm

Ok, I am having some trouble with this problem: How much energy does it take to convert .500 kg ice at -20C to steam at 250 C? Specific heat capacities: ice: 2.1 j/g C, liquid: 4.2 j/g C, steam: 2.0 j/g C. Hvap = 40.7 kj/mol, and Hfus = 6.02 Kj/mol. What I have done so far is use q=mst...

what mass of steam at 100 c must be added to 1.ookg of ice to yeild liquid water 20c ? this is what I have so for c*m* displacement of temperature =m *L

I'm not sure if I'm approaching these problems correctly. Could someone check my work? Steam at 100°C is condensed in 500g of water at 20°C. a. What is the maximum amount of steam that can be condensed in this amount of water? Q[steam] = m[steam] * L[c steam] * (T[f] – T[i]) Q[steam]...

Ok, using steam tables, calculate the specific entropy of steam with dryness fraction 0.63 and pressure of 2MPa. Can someone suggest how Id go about this? Thanks.

Ok, using steam tables, calculate the specific entropy of steam with dryness fraction 0.63 and pressure of 2MPa. Can someone suggest how Id go about this? Thanks.

can someone give me a hand on this one? How many grams of water at 20 degrees Celsius can be converted into steam at 500 degrees Celsius with 10 kJ of energy? wat i know is that this question is 2 parts: Water being heated to 100 C (80 C change)using the specific heat of water n then...

The steam engine which operates between 500°C and 200°C is run in reverse. How long would it take to freeze a tray of a dozen 37 g compartments of liquid water at room temperature (20°C) into a dozen ice cubes at the freezing point, assuming that it takes 300 W of input electric power to run it...

At a steam power plant, steam engines work in pairs; the rejected heat from the first is the heat input to the second. The operating temperatures of the first are 670 C and 440 C. The operating temperatures of the second are 440 C and 290 C. Assume both engines work at 60% of their Carnot...