Turbine Definition and 546 Threads

Does anyone know of somewhere I could find some documentation on how to create a wind turbine?

Hello, For sometime now I've been into electronics and i have forgotten most of my meager knowledge in thermodynamics. . Could you explain how a convergent-divergent nozzle works ? Steam at high temperature and high pressure but relatively low speed enters into the nozzle. Then why...

Homework Statement An electric-generator turbine spins at 3600rpm . Friction is so small that it takes the turbine 16.0 min to coast to a stop.How many revolutions does it make while stopping? Homework Equations The Attempt at a Solution (3600rev/min)(16.0min)=57600 i...

hi everyone: i have a question about gas turbines : i am working as instrumentation engineer( beggar ) at a power station .. we use gas turbine GE ( mark V) frame 9 . i got that alarm : exhaust thermocouple # 10 fail , drop number 123 if anybody working in such a field can help me in...

Hello... new to forum... I am looking into design of a forced air turbine that will drive a generator and flywheel. The flywheel would be utilized for short periods of zero air supply and as an energy resevoir to maintain revs at an optimum level. Dimensions: Turbine/AC generator/flywheel...

Hi there, can anyone shed some light on regenerative gas turbine cycle. How to work problems of this sort. DATA: compressor intake: 0.95 bars @ 22 `C pressure ratio 6:1 (compressor), 82% efficient turbine inlet: 1100 K. 85% efficient. regenerative effectiveness: 70% Intercooling...

Hi everyone. I am having extreme trouble finding the answer to this problem. I thought I originally had it, but nope. The original Q is: "Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 65 meters and a wind-conversion efficiency of 25 percent. The turbine...

Hi, I’m pretty new to the CFD game, but have been trying to model, very approximately, fluid flow through a field of undersea turbine generators. The issue I’m having is how to actually approximate the restriction which corresponds to the turbine blades. I’m using COMSOL/FEMLAB. As far as...

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...

If supposing we were to add a wind turbine connected to a generator to a moving car, would we be able to get the air flowing around the car to turn the turbine and therefore gain some energy? If it is possible, is it economical? if it is, is it practical? would there be a loss? would there be...

I have read a bit about Tesla turbines and their amazingly high RPM output. I have also read that they don't product much torque, which is possibly why they haven't been used in anything more than dentist's drills and other things requiring speed but not high torque. How much power could one...

I know that confinement and stability are a big issues when it comes to harnessing fusion power in a controlled fashion, but what if we could do away with the stability constraint? (sorry if this is completely unfeasible, I don't really know very much about plasma and discharge physics). My...

I was just swimming with a floating board for the pool, and came up with a thought. What would happen if you had two tubes one filled with air, and the other one filled with water. If you could somehow get an object less than half the density of water to fall down the tube with the air and go...

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hello, i have a project of a small turboshaft turbine with regenerator to produce a power of 140 kW, with aplications on ligth helicopters and industrial co-generation. does aonyone knows here i can find some references about te eficciencies of the components, such as compressor, turbine...

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...

Again another homework question, all help greatly appreciated A gas turbine plant is fuelled by Methane,. After compresssion the air and fuel enter the combustion chamber at a temp of 600K and excess air is supplied in order to limit the temp of the combustion products to 1200K after steady...

Going to be honest this is a ibt of homework i have been set but from the note i hae it doesn't make any sense what so ever! so any help would be greatly appreciated :-) A gas turbine plant is fuelled by Methane,. After compresssion the air and fuel enter the combustion chamber at a temp of...

I'm doing an experiment (at A-Level) to see the efficiency of a wind turbine. I'm doing this by changing the number of blades and varying the wind speeds. I wondered if anyone had an equation that could look at efficiency? I have the current and the voltage (and wind speed). Sorry if I've...

Hello guys, I'm a second year BSc aerospace student in Holland, and I'm thinking about making a gas turbine engine. I hope to specialize in powerplants eventually. You people seem knowledgeable, so I thought I'd ask my question here. Anyway, bare with me a bit... I first thought about...

Hi, i m elect. engg and i want to help frm mech ppl here, Why the turbine has stages like hp, ip and lp? Why not a single long turbine? I also want to know that if we want to trip a large turbine used at power plant, how much time it takes to stop the steam supply. I mean can steam valve be...

can anybody please tell me the temperature (degrees Celsius please.) there is at the back of a normal turbine jet engine (or something like that:-p )?? i couldn't find it on wikipedia or something like that:frown: so i ask it here:approve:

I've been thinking about the wind turbine (horizontal turbine - like an airplane propellor.) that I pass on the way downtown and I'm realizing I've been taking for granted how it works. Seems to me it's exactly opposite of an airplane wing. Rather than forward speed generating lift, you have...

HI folks, new to this forum.I posted this on a different thread, but this seems the better location... it's a conceptual question. I'm in a Fluid Dynamics class and need to make a presentation on Bernoulli's conservation of energy equation as it applies to wind turbines. I think I...

HI folks, new to this forum. I'm in a Fluid Dynamics class and need to make a presentation on Bernoulli's conservation of energy equation as it applies to wind turbines. I think I understand the different energies involved here: kinetic(v^2/2), pressure(P/rho), potential(zg)... I want to...

Is there any aero engine in the world without any rotating bodies like compressor-turbine? Other than ram jet or scramjet. Thers is a vague idea in my mind to go for an aero engine without rotating elements in it. I just wanted to confirm if it is there.

Our "safety analysis for nuclear power plants" professor asked for an FMEA worksheet and i used some of the malfunctions mentioned http://www.cti-simulation.com/ctisimulation/PWR.htm" , but i don't really get what was meant by the turbine runback, and hence i don't get the fault here. And I've...

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...

Another question. If your given the quality coming out of the turbine. Why do you use say H2 = Hl + xv(Hv - Hl) to determine a xv even though u hav one given?

Why is it when the conditions are adiabatic and reversible about a turbine, the assumption is its isentropic?

Hello all I am posting on this site to ask for help with my Theory section of a experimental investigation, below is what I have done so far, my teacher has asked for the theory to be able to be understood by a average high school maths student that does not study physics. The experiment used...

A stream of water strikes a stationary turbine blade, as the drawing illustrates. The incident water stream has a velocity of vo=+21 m/s, while the exiting stream has a velocity of vf=-21 m/s. The mass of water per second that strikes the blade is 27.2 kg/s. Find the magnitude of the average...

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.

I wonder if anyone could shed some light or information about the subject I'm looking into. How will wind turbines with varied amounts of blades perform in varied wind speeds. E.g. the less amount of blades you have the better a turbine will perform at higher wind speeds? Any help on the...

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...

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...

A liquid water turbine receives 2kg/s water at 2000kPa, 20C, and velocity of 15m/s. The exit is at 100kPa, 20C and very low velocity. Find specific work and power produced. From my tables I get hi=85.82 kJ/kg he=84.03 kJ/kg Energy equation reduces to: \begin{array}{l} h_i +...

hello, there is a question bugging my head for quite some time.. why wind power plant has lesser turbine blades while the one in hydro power plant has more?... is it due to the density of the fluid? thanks

a mill requires 5000kW to operate at full capacity, produces 14tons of paper per hour, purchases electricty for $.10/kW*hr There is a dam 10m high that supplies water to a turbine. the river can be used only if the flow is above 50 cubic ft/sec. efficiency of generator is 75% how am i...

Wind blows at an average speed of 5m/s 10% of the time. If the efficienty is 45%, what is the radius of the wind turbine that would be needed to generate 571 W of electricity. density of air = 1.25 kg/m^3 The formula is Power = η(1/2*pi*r^2*ρ*v^3), where η is the efficiency, ρ the density, and...

Why does the pressure in the burner of a gas turbine engine drop when you are increasing the internal energy of the air?

I have a Thermo I problem: Given: 80m diameter wind turbine rotating at 20rpm under steady wind conditions at an average wind velocity of 30kph. The eff of the system is 35%. Need: Power generated Assumptions (made by me):delta PE ~0; mass=constant; operating at Steady Sate; T~constant...

My friend is wondering if its possible to use the energy of a higgs boson to use in a turbine generator. Is that possible?

An alternator attached to a water turbine generates 35 Watts given 50 feet of head and 10 gallons per minute. Assuming that the efficiency of the alternator is 50%, is it possible for me to find the angular velocity from this information? If so, how would I do it?

What is the most efficient shape of an air driven turbine? I want to achieve the greatest possible torque with the lowest volume of air. I hope I am posting this in the correct place. If not, any links would be helpful. Thank you very much.