Turbine Definition and 546 Threads

I work at a small company and we're currently developing a hydrokinetic turbine device that will operate in fast flowing rivers to generate electricity. Eventually, we are going to design our own custom turbine blades, but for initial testing purposes we are simply trying to find something that...

Im new to this forum and wanted to see what you think about my new patent pending design. My concept is...using a 2.5Mw wind turbine, refit 110'L rotor blades with a 10-12' diameter of concave vanes or paddles designed to capture max air thru a forced ducted system that is generated from a large...

Tesla Turbine, variation Just an observation from my shop a couple of weeks ago. Something I have done a few thousand times in my life, and for the first time took notice of what was happening. Turning the switch of my bench grinder on, the need to use the wire wheel for cleaning a small...

meshing turbine in gambit ~~ urgent Hi... I would be very grateful if someone could help me to mesh the turbine in gambit. I have been struggling with this for the last whole week so desperately need help urgently. I already have the model in gambit but I am not sure if this kind of...

Does anyone have a spreadsheet with formulas or a set of formulas that one can use to determine the turbine inlet temperature of a gas turbine knowing measured parameters like fuel flow, compressor discharge tempuratures, LHV of fuel.

WELLS Turbine design! URGENT! Hello, PLEASE CAN ANYBODY HELP ME!? I am student of Mechanical engineering and I have to solve some problems regarding the WELLS TURBINE DESIGN! Does anyone have any links regarding this topic? And also could anybody help me out with this? I would be very very...

Homework Statement 1. A wind turbine with a swept diameter of 20m and an efficiency of extracting energy from the wind of 40% is subjected to an average wind speed of 10m/s. (a) How much power might the turbine produce? Please can some one point me to the right equation as everyone I...

Homework Statement Argon enters a turbine at a rate of 80.0 kg/min, a temperature of 800.C, and a pressure of 1.50 MPa. It expands adiabatically as it pushes on the turbine blades and exits at pressure 300 kPa. (a) Calculate its temperature at exit. (b) Calculate the maximum power output of...

Homework Statement Some electric-power companies use water to store energy. Water is pumped by reversible turbine pumps from a low to high reservoir. To store the energy produced in 1.0 hour by a 120*106 electric-power plant, how many cubic meters of water will have to be pumped from the lower...

i am doing a project which involves me designing a turbine and compressor based on the turbocharger principles. i was wondering if anyone knew of an easy way to carry this out. any help would be excellent!

Hey guys, new user here. I had a question about a project I am working on with a professor. Unfortunately he does not have much experience with fluent but is a very intelligent and experienced person when it comes to the theory. So I am basically trying to develop a chart of the power...

Hi geniuses, I have a question about a Tesla turbine. I'm brainstorming about using a small one as a leightweight "engine" on a kayak, using the flow of the water as energy source. First of all, I do realize that this won't run on its own in a perpetual motion style. But my question is...

For years I have been wondering why wind turbines are designed with very skinny blades (photo http://en.wikipedia.org/wiki/File:Turbine_aalborg.jpg ). Most of the available wind passes right through the circular "reach" of the device without touching the blades. Wouldn't it be more efficient if...

Homework Statement I have been asked to calculate a range of values relating to a Gas Turbine engine, and while I have been able to find the majority of the values I am almost certain that the Thermal Efficiency value of 1.64% I have come up with is incorrect. This relies on Shaft power...

I am considering the idea of making a small scale wind turbine for my final year B.Tech project. I have run into a roadblock, I have to maintain the generator at a relatively constant speed. I was thinking of 2 parallel shafts one from the Turbine blades coupled via a CVT to the shaft to the...

was changed to a new thread... https://www.physicsforums.com/showthread.php?t=277401 thanks

Hi All, For a small steam turbine to generate power at a rate of 50 kW/h. How many BTU's of heat required per hour, also water consumption per hour, how do you work this out?

So I have a turbine falling through the air such that the free-body diagram for each of its rotor blades would look like: http://img444.imageshack.us/img444/2504/freebodypy6.png And the whole turbine spins counterclockwise I understand that for this case you can split drag into form drag and...

Homework Statement A small dam produces electrical power. The water falls a distance of 27m to turn a turbine. If the efficiency to produce electrical energy is 65%, at what rate must water flow over the dam to produce 780 kW of electrical energy? Homework Equations v2 = u2 + 2as...

I wonder why water turbine (like in hydroelectric power plant) has, in most design, more then 90% efficiency when steam turbine around 30%. In both cases we converting the pressure to work, so why such a difference in efficiency?

Hi, What is the best way to design the root region of a wind turbine blade (for a small model turbine: 0.7m diameter, Re ~ 10,000)? So far we've selected our airfoil and calculated the chord lengths (proprtional to 1/R) but can't find any mathematics on the root region. At what point should...

PMA and High RPM from a turbine... Hey Forum, I am working on a plan to build a recharging setup. What I want to do in theory is take a jet turbine or a smaller RC turbine that burns bio diesel and turns at around 60,000 RPM. I want to take this high speed rotation into a chain or belt...

Description of method: The rotor's mass is constant so when it accelerates in a given wind, it does so with an acceleration = torque/mass. This acceleration will depend essentially on wind speed. If tests are carried out in the open with non-turbulent winds it is possible by using a tachometer...

helo guys,i'm new here hope to gain knowledge from this forum.i currently doing a project about design of turbofan engine.now i have to do preliminary stress and vibration analysis for the turbine blade.i'm not very good at stress and vibration and have search the internet about it but couldn't...

I'm about to start a project in which I want to study the effects of making modifications to a wind turbine blade. I am going to be able to use various external flow modeling software our aerospace labs. I am a mechanical engineer and am used to using solidworks and I understand that that can be...

Hi, I'm having a lot of trouble trying to set up a process for calibrating turbine flowmeters for use in fuel rigs. Basically, I have a calibrated "master" flowmeter in series with the uncalibrated turbine flowmeter. I need a process that will give me the line of best fit across the...

We honestly haven't gone over this in class and I have no idea why my prof wants us to do this question... so I'm given it a go and come up empty. NEED HELP! Homework Statement Calculate the maximum theoretical power from a wind turbine if the radius of the vane area is 18.1 m and the wind...

Hi, I'm going to design a savonius turbine, and image below is my turbine blade with dimension. But I not sure how to determine the "bucket gap width, S" and "gap width ratio, s/d" is there any calculation method for them?? thanks

Homework Statement During startup of a power plant, a turbine accelerates from rest at 0.43 \rm {rad/s^2}.How long does it take to reach its 3200 \rm {rpm} operating speed? How many revolutions does it make during this time? Homework Equations The Attempt at a Solution

Hi all, I'm hoping that someone may be able to help! I'm doing a project which has involved me looking at the use of superalloys in Gas Turbine engines (i.e. Rolls Royce, GE etc). As part of that I am looking in particular at the use of Chromium within these engines, does anybody have any...

my aim is to lower the cut in speed of the horizontal turbines. I know wind speed has a brutal effect on turbine output, so I want to use horns to speed up air. I plan to put a horizontal axis turbine in the midle of the hexagon You see on the pic. Each side of the hexagon is like a...

i know climate science is pretty inaccurate at the moment and its difficult to predict the effects of lowering carbon emissions but just as an interesting topic i was wondering roughly how many lives each wind turbine will save? what i mean is how much carbon dioxide will be saved from the...

I'm trying to determine the feasibility of a project, but have not yet taken fluid dynamics (next quarter). I'm trying to figure out how much power could be produced with a CO2 powered turbine. The turbine will be activated for only a few seconds at a time, with speeds under power ranging...

As part of a wind turbine design project, I have come to selecting the most appropriate coil and permanent magnet configuration. The aim is to design a turbine capable of 3kW (max), and approximately 300rpm. It will use mechanical furling to regulate speed. So far, I have only seen...

As I understand it, a tesla turbine runs by injecting steam, or some other gas onto the outside of several disks mounted parallel to each other on a shaft. The gas is directed roughly tangent to the outside of the disks and it exits through openings in the center of the disks. Seems straight...

so I am still very much confused about the quantitative analysis of Francis turbine, so i wrote a small program. I have attached a copy of the results. Everything is fine, the results do match the normal circumstances. But upto speed 110, degree of reaction(R in the table) is negative, and...

Hey! I am trying to find some figures on the environmental conditions a turbine blade in a Jet Engine would have to withstand, and the materials that are necessary to prevent the blade from failing. I have taken the example of the 'Trent Engine' or so I think it is called. I have read that...

Nope. I'm still having trouble. I asked about this before, but it's still not gelling for me. There's a wind turbine on the "front lawn" of the city of Toronto that I pass every day. Its blades are never more than ~20 degrees from flat, i.e the blades are almost perpendicular to the flow of...

Hello I am new to these forums and probably will be here for a long time. I am looking for a 3D model of a steam turbine I can play with in either CATIA, ANSYS, or Solidworks. I just want to run thermodynamic simulations and not modify any mechanical or structural components. I have been looking...

I see a lot of references to the 'efficiency' of the Tesla turbine, however, I can't find any actual data. Does anyone have a handle on actual achievable efficiencies of the tesla turbine?

hi guys, i was hoping someone could possibly help me out with a problem i am having. please take a look at the attached picture. i am modeling a turbine blade, trying to find how different configurations for internal cooling configuration affect the overall temperature distribution in the...

Hi I've a wind turbine which have to run under a very low wind speed, from 2-3m/s. Currently, I'm using Envirotek V20, the result is around 1.5V-2.5V, and current is 0.3mA or nearly zero. My aim is to achieve 50W. Any suggestion for the alternator which I should use? p/s: without...

A steam turbine in a power plant accepts 4500 kg/hr of steam at 60 bar and 500°C and exhausts steam at 10 bar. Heat transfer to the surroundings (Tsurr = 300K) at a rate of 70 kW. (a) What condition needs to be satisfied for the turbine to generate the maximum possible power? I said...

hi, i was hoping someone could help me with a problem i am having. i have a 2D turbine blade, with many holes of different diameters through it that represent the cooling passages. i am trying to find an analytical solution of the temperature distribution so i can compare it with...

Homework Statement The turbine produces current that is at 12kV. To lessen the problem of Ohmic heating, a transformer steps up the voltage to 138kV for power line tranmission. Homework Equations Np/Ns=Vp/Vs ?

While doing experiments on a francis turbine, i noted that the discharge decreases when the load on shaft was increased, =>the speed was decreased. I was(in fact, I am) kind of confused about why it dropped, I did consult some text but didnt get any right reason. I thought that since the blade...

Hi All, I'm a junior in HS. I have a research project due this semester for Physics B (first year introductory college physics). Last semester I did some research on boundary layers, friction loss in pipes. This semester I've decided to do some investigation on air breathing rocket...

3 phase alternator. any good links to*** is what I meant in the title

I am looking to find information on fuel injector vanes that can be used for fuel injection into a gas turbine. I am at the moment designing one that will be integrated into the gas turbine. However i am struggling because i need to know if there is a formula for particle spread I have a formula...

Hi, I need with the following question. Argon gas expands in an adiabatic turbine from 3MPa and 750 C to .2 MPa at a rate of 5 kg/s. Neglect KE and PE effects. Find maximum power output. I know I need to first find the temperature of state two and then use that to solve for h2 (I have...