Turbine Definition and 546 Threads

http://www.sauerenergy.com/index.php?option=com_content&view=article&id=50 The link above gives a picture and rough model of a Sauer Wind Turbine. I was wondering, since the dimples on the turbine were based on the idea that a golf ball reduced air resistances, how it would help the wind...

Homework Statement A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.127 rad/s2. After making 2790 revolutions, its angular speed is 155 rad/s. (a) What is the initial angular...

Homework Statement Air of density 1.2kgm-3, speed 8ms-1 is incident on blades of wind turbine. Radius of blades 1.5m. After passing blades, wind speed is reduced to 3.0ms-1 and density 1.8kgm-3. How much power is extracted from wind?Homework Equations P=1/2 pAv3The Attempt at a Solution P=1/2 x...

We can make energy from the force of water moving, to turn a turbine. Is there a way to eliminate the water, but to just use the pull that gravity exerts against all matter instead? If you need to have mass moving in order to harness that power, is there a way to siphon off the energy that is...

Hello all, I am not an engineer, but I am a 32 year steel fabricator, I have recently built a 17 foot wind turbine with an axial flux alternator, I would like to build a tower for it but would like to get a general idea before I go to a local engineer for actual stamped drawings which are...

Hello. The title of this post may seem too hardcore. Actually, I am building a simple wind turbine made from wood and aluminium thin plate. it has three blades and 120 cm in diameter. It should be at least 3.5 m above ground, on a steel/wood column. I have no idea how to install this pole...

Homework Statement I am trying to determine the input I will have on a shaft with a continuous force of 3,720 pounds one foot out from the shaft center. I am thinking the input continuous torque would be 1 foot being that I am using a 2 foot pulley on the shaft, and I have a continuous...

I know the answer is 6328kW, I just not sure on how the book came up with that answer. Can anyone help? An isentropic steam turbine processes 5 kg/s of steam at 4MPa,which is exhausted at 50 kPa and 100oC. 5% of this flow is diverted for feed water heating at 700kPa. Determine the power...

I think it is possible to design a machine capable of generating useful electricity using recirculated fluid flow. But the laws of thermodynamics make it very difficult. The three laws of thermodynamics can be summarized by saying: "You can break even but only at absolute zero". So we know...

I was on an easyjet flight this morning and noticed a distinct and pronounced rattling, clicking noise coming from one of the engines. Not being a very good flier at the best of times (despite working in the aerospace sector) I was pretty worried. When the engines spooled up I was also sure I...

hi this is my first post on here so please be gentle. my names chris and I am an aerospace engineering student and i would like to build a jet engine based around a turbo charger, i know this concept isn't new but its something i would like to build. I am on a tight budget so i need to build...

My Semester Project Is "Dynamic Analysis of Wind Turbine Blades" In ANSYS 9 Environment ... I've Modeled Wind Turbine 'Rotor Assembly' In Pro|Engineer And Successfully Imported Into ANSYS ... I've Practiced 'Static Analysis' Only In The ANSYS Environment ... So It Leaves Me With A ZERO-LEVEL...

SUMMARY I’m making a small turbine. I’m looking for suggestions as to how to measure efficiency and maximize the pressure of the steam taken in. DETAILS If I understand it correctly, essentially, a turbine is a way to convert steam pressure into electricity via a rotating shaft (with...

Homework Statement a gas fired turbine generator for producing electricity has an efficiency of about 50%. how many cubic feet would be needed to produce 1000MW for one year. Homework Equations 2.4 x 10 ^8 SCF/day is the natural gas required for the power plant input = 2.4x10^11...

I have a question about using NA (naturally aspirated) intake plenums on turbo charged cars and the detrimental effects it may have. Here is a standard NA plenum for an rb30 engine Here is a turbo plenum for an rb30 engine The difference is with the turbo one the plenum (large...

I want to know ..how to know how much pressure is needed for electricity turbine generator??

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.

I posted a question about this a couple days ago but I have since solved for the total temperatures in the compressor, burner, and turbine. My question is this. How do I calculate the static pressure in the compressor, burner, and turbine when i know the following data at each station...

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?

Homework Statement Air enters a gas turbine at 1600K and exits at 100kPa and 830K. The turbine efficiency is 85%. Determine the turbine inlet pressure? Homework Equations (I used 3 different methods and got a similar answer. I just don't understand if I was correct in assuming...

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...

Hi all, Homework Statement estimate the power output of (2 wind turbines, the 1st being 0.6km in front of the second facing the prevailing wind direction witha speed of 20m/s) Homework Equations Betz equation: http://www.wind-power-program.com/betz.htm Problem with this is that...

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...

Homework Statement Homework Equations The Attempt at a Solution so mf1=mf2+mf3 simplify energy equation shown above to: m1h1-(m2h2+m3h3)=Wflow and mf=ρAV=vf/specvol=12.58kg/s I don't know how to solve for mf2 or mf3 or diameters. (mf=mass flow, h=enthalpy, Wflow=work flow, ρAV=mass flow eq)...

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 really need help in my undergraduate thesis which focus on wind energy. Goal I want to calculate the amount of Power in the wind turbine shaft, which later used to calculate the efficiency of my wind turbine. Material My wind turbine uses 3-blade household common fan as blade which have...

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...

Hey guys, i have some problems here, i hope you can share some helpful information. it's about shroud ring and clamping ring (support ring) for stator turbine blades. These rings have a thermal deformation behavior (ovalisation), thus dent was found on the ring surface (caused by contact...

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...