Turbine Definition and 515 Threads

Homework Statement Hi! I'm currently working on my school project, for which I've constructed a tesla turbine, and to complete it I'll have to make some calculations on the efficiency. As I don't want a efficiency result that depends on a generator I've decided to mount a flywheel...

Hi I wasn't sure whether this is technically homework or not but anyway. I am building a miniature wind turbine for a basic project just for myself. I was wondering if there was anyway for working out the voltage gained from the generator. I know this could be gained from using P = IV but...

Homework Statement My son and I have built a wind turbine following the plans on: Build your own Wind Turbine Designed by Dave Mussell http://www.re-energy.ca/docs/wind-turbine-cp.pdf" . These plans were inspired by the Picoturbine: link to manufacturer and link to PDF. We used 30 AWG...

We are looking to effectivley build a wind turbine to capture the wind and create energy. What would be the most effective and easisest way to construct the windmill? I would like to focus on the design of the blades themselves. What design of the blades would provide maximum support and...

Hello. Let me make something clear right away, I don't think perpetual motion is possible. However, whenever I look into wind-turbines/cars I find forums bashing some young person for asking why we don't strap a windmill to the top of our cars. Obviously that wouldn't be an efficient way...

Hello! first time user, in desperate need of advice: My company (start up) has built a 5 hp Rankine cycle generator with a thermal efficiency of about 33%, it works fantastic in an open cycle, however 6 engineers and many pump specialists later, and i am still at a loss... My system uses...

How do i develop a wind turbine model for electricity generation.

Homework Statement Model a 1KW windturbine. Homework Equations in this link u will find the equation (its equation 2-3) for a fit for a cp(lambda,beta) curve. It has 6 coefficients. The coefficients given are particular to a 1.5 MW windturbine. Does anyone know where I can find any...

Why can't we use turbine in series so that the the remaining kinetic energy of water after passing through one turbine can be used to turn another turbine?

Although I'm sure people have been looking to develop a solution like this since the beginning of time (at least, the first use of electricity), I'm trying to achieve a design that will enable perpetual electricity generation without the addition of conventional energy inputs. Essentially, I'm...

hi!... Does anyone know the relationship (i mean formulas) relating to the incoming air velocity to the rpm of a wind turbine?..i need to have a design in the generator part and also the parameters of the propeller..thanks! best regards, :)

Could a small ducted fan / wind turbine say 4 -5 inches in diameter placed in the wind stream of a car develop enough energy at freeway speeds ( or less ) to help charge the cars battery at a realistic level say 30 to 75 amps 12v? I am thinking along the line of a duct from the front grill area...

Homework Statement A steam turbine takes vapor at 463 deg c and exahusts it to a steam boiler at 238 deg c. the turbine then receives a steam from the boiler at this temperature and exhausts it to a condenser at 38 deg c. what the is the maxumim efficiency of this combination. Homework...

Hi friends; I have Saturn 1100 and centaur 4500 two shaft gas turbines from solar INc. I want to know that what relationship of following parameters 1. Compressor discharge pressure and fuel flow 2. How i calculate the SFC? 3. What effect of LHV on SFC? 4. How i calculate the Heat rate? If...

how do we find the natural frequency of a tower of a wind turbine if, say, the tower is circular hollow cross sectional shape (its not tapered or anything, just cylindrical all the way up). I think i know how to find it when we're ignoring its weight, but what is it when weretaking into account...

Homework Statement I'm having difficulty obtaining an accurate value possibly due to unit conversions. Homework Equations r_m=mdot/(2*pi*U*N) r_m=mean radius, ft mdot=mass flow rate, lbm/s U= blade velocity, ft/s N= RPM The Attempt at a Solution I know that I have to convert Rpm...

I have a basic question on how the power efficiency of wind turbine affected by the gear ratio. Suppose there is a generator connected with the rotor through a gear enhancer, a higher angular speed of generator is obtained. Since a higher voltage is produced, we may think that the power...

Hi i am trying to find rated power output for turbine for tidal, and energy capture per cycle i am putting limits to integration T1 and T2 i know i can assume period of 12 hours and 25 mints which is 745 mint for quarter cycle T1 would be 745/4 so T1 is 186.25 but i don't know how cani find...

Hello. I know that most fission reactors boils water to move a turbine like this one. Is the same for a future nuclear fusion power plant, produce heat and boil water? Some light about this please.

i understood brayton cycle etc.. but why is air compressed in the GT engine ? iS is anything related related to following reasons ? 1. FOr better combustion of fuel, if so why ? 2 IS it to increase the temperature of air, if so why ? 3 any other reason

I am trying to find out RPM and torque of a turbine. I have it modeled in CATIA. I have ansys and Fluent. But I don't know if I can get these values from that software. Does anyone know how I can do a virtual simulation to determine Torque and RPM?

Hi, I want to review a turbocharger gas turbine design project. The previous problem was, the gas turbine could not sustain itself. Help me out if you can figure out what could be wrong.

Hello gas turbine peeps, I'm going to be starting a new position doing Aero CFD for a power generation gas turbine company. While I have a good amount of theoretical and academic knowledge of CFD in general, my practical application experience is limited. I was hoping to do a little light...

I was talking on another forum about an idea someone proposed. They said if you put a miniature wind turbine as a Hood Ornament on a car, as the car drives, it would produce extra usable energy. I said this would not work as if the wind is not blowing at the correct angle and velocity then...

Newbie here;I have a project where I need to know the formula to find the speed of a known quantity of air in cubic feet per minute going though an orfice.So I can calculate psf.at.00252v2

I know the basic theory to how a steam turbine works. but I have a gap in my understanding of how the thermal dynamics work. I'll outline a scenario and detail the bit I don't understand. simple steam turbine 1/ heat source 2/ boiler 3/ steam jet 4/ impeller The heat source heats...

I have been researching DIY gas turbines lately, and I have concluded that I want to make one. :smile: My only issue is that all amateur designs I have seen use turbochargers. I would like to see an axial, multi-stage compressor/turbine design. Obviously this would require one to fabricate the...

Hi guys, I am working on designing a wind turbine spar for a second year mech project. The spar has an elliptical cross section, is hollow and linearly tapered with a linearly varying wall thickness. The entire tower reaches upwards at angle. My question is: if I want to find out the...

Hello, Im new to the forum, i joined to ask a question about a boat I've been obsessing about for awhile. My idea is an aluminum sail boat (27-40') that has its mast removed and replaced with say a 3-4kw vertical wind generator (350lb) i know that's a bit heavy but I am sure the wind forces are...

Hi there... if it is of interest to anyone. I just completed a wind turbine blade design and simulation software fully integrated into the GUI XFLR5 of Mark Drelas XFOIL. If you want to try it out check: qblade.de.to cheers David

I am trying to assess the feasibility of running a steam turbine from a heat storage device, which can produce in a heat range of 100°C to 600°C (with a respective increase in cost, to be compared with losses in efficiency of the turbine for lower temperatures). So my question is this: Where...

As an example what is the estimated distance between each blade of a Jet Turbine blade and how far would each rotary blade be from the other to compress the air within the turbine housing? My accomplishment would be to make a miniture sized electirc turbine, which i have made when i was 13...

anything big like it costs more then 15 million and some how it has made or is attempting to make a significant contribution to the field of physics. If it's happening in Canada then that would be most preferable and helpful but if it's taking place in a different country then that is good too...

Alexander's Marvelous Machine http://www.nrdc.org/onearth/05spr/gorlov1.asp by Jill Davis http://www.worldchanging.com/archives/002383.html http://www.gcktechnology.com/GCK/articles_CSM.html http://www.gcktechnology.com/GCK/pg2.html I've seen similar technology adapted for windmills.

my dessertation topic is optimum wind turbine blade design with xfoil. and the aim of this project is to find a series of airfoil that gives a good efficiency and also how the angle of attack changes with rotation...pls has somebody got an idea about...and also how best can i start this...

Consider a wind turbine placed alongside a road in a location with no wind. If a vehicle drives past (without loss of generality, at a constant speed) the turbine will spin and electrical power can be produced. The power produced is obviously supplied by the vehicle. As compared to the case...

Homework Statement Sketch and describe a reaction turbine with a velocity-compounded impulse stage. Homework Equations The Attempt at a Solution Would anyone happen to know where I could find this?? Link?

Hi, I'm currently trying to design a wind turbine for a college project. I know the ideal equation for power is (mass x area x velocity cubed)divided by 2. Is there anyone who could help with equations relating the power output to the number of blades and angle of the blades. Thanks

Hello. I'm calculating the different parameters of a turbine design but I have some trouble with the solidity. The solidity near the hub exceeds 100%, but is an average of ~27% for a 6 bladed turbine. I'm just wondering if anyone has had experience in turbine design and if +100% solidity is...

Hey Guys, I'm trying to solve the problem below: Steam enters a turbine with a velocity 120 m/s at 600°C and 600kPa. The steam leaves the turbine as saturated vapor at 200 kPa with a velocity of 180 m/s. Heat is transferred from the turbine to the surroundings in the amount of 30 kJ for...

Hi all, does anyone knows of any good website that teaches you how to read turbine or compressor maps? And possibly teaches you how to select the best turbine / compressor for your particular application? Thank you!

Im working on some problem for a chemical thermodynamics course, and I've solved a question (maybe incorrectly) which is making me question my understanding of entropy. Basically, the system in question is a turbine, with one stream in and one stream out. The turbine is insulated, hence no...

A turbine is installed in a vertical pipe line, 150mm diameter. A gauge is connected to the pipe at a point A above the turbine and another at point B below the turbine, the vertical distance between A and B being 1.2m. When the discharge is 0.06m^3/s, the gauages read 400kN/m^3 and 35kN/m^3...

Homework Statement Steam is bled from a turbine to supply 2 MW of process heat in a chemical plant at 200 deg-C. State 4 is saturated liquid water at 200 deg-C. If the turbine inlet condition (state 1) is 5 MPa, 500 deg-C and the turbine exit pressure is 10 kPa, determine (a) the quality of...

1. Wind turbine produces 8MWatts (If wind speed is proportional to the 7th root of altitude) (Wind power is proportional to the cube of wind speed First the turbine is at 450ft then reconstructed at 650ft, how much faster is wind speed? and how much more power?2. Sw= 7√Altitude, Pw= (Sw)33...

Hello, I'm new and know relatively nothing about physics :blushing: I have been quite fond of AutoCAD and designed something a while back, and I've asked countless different people if it would work, none of them can actually tell me. So I thought I'd come along here and ask you intelligent folk...

Hi! I’m a 4th year student at mechanical engineering. I have been asked to design a kit that can be installed in a car/vehicle which can be used to recharge the car's battery or connected to some of the car's/vehicle's component to power them. Where and how do I start? Does anyone have a...

Hi everyone, I am student of Ocean Engineering and now I am in process designing a model of wave power plant based on OWC. For that, I need Wells turbine for generator. I don't have many experiences in electricity engineering so do anyone have diagram to build simple Wells Turbine ? Thanks...

I am doing a project on the subject above, and i am selecting one type of material that is currently popular used in gas turbine, but i found it difficult to select the material as there are too many nickel-based alloy that can be use for this application. Can anyone direct me with a suggestion...

I know this question was already asked but I wanted to tackle it from a different angle. I saw allot of posts on how it would take too much gas to create the energy from the turbine but for the example let's say the car is electric. Now say we have a system where the turbine is in a...