Turbine Definition and 515 Threads

Sorry, not so much of a problem, more. . I need to understand. Homework Statement Finding the net head. This website (http://www.oregon.gov/ENERGY/RENEW/Hydro/Hydro_index.shtml ), says that the gross or "static" head is the vertical distance between the top of penstock and the point...

I've been given a project to improve the design of a turbine used to measure the flow of beer! I've trawled the web and libraries to find previous work in the hope of finding some handy pointers, rules of thumb and simple equations to guide me. However, I've had little joy. Basic parameters...

hii frends, im a doing a project on the efficiency improvement of a velocity compounded impulse steam turbine. we plan 2 do that by varying the input mass flow rate of steam and finding out the particular mass flow rate at which maximum efficiency is attained. the data i could collect...

Hi, I am a Mechanical student, currently at my final year so I am to do my FYP aka Final Year Project with the title of hybrid power generator (solar + wind). My friend is in charge of the solar part while I am to design a vertical-axis wind turbine. I am clueless about from where should I...

definition wise i got the difference between these two efficiencies. but in practice how does these two differ? i was referring to this book: Jet propulsion: a simple guide to the aerodynamics and thermodynamic design ... By N. A. Cumpsty he has mentioned this: "using polytropic...

we need to make a wind turbine using this motor http://www.kidwind.org/xcart/product.php?productid=15&cat=79&page=1" the rules can be found here: http://www.mrmaloney.com/nssl/events/2009-2010/0910_4-jan-wind.pdf" We were thinking, since they will be using P=(I^2)R instead of P=IV to...

hey all, for a science league competition, my team-mates and I are tasked with building a turbine that will draw as much power from a box-fan as possible. Every team has been given an identical motor and the rules specify that we can't modify the motor at all. I've asked around and it seems...

guys I am trying to do calculations for coils that i want to use...i don't know how to do faradays law..this is the information i have... 2inch coils, 80 turns (4layers, 20turns each layer) average diameter is .75 inches. distance from magnet is .25inches. speed is 80turns in 1.123seconds...

Hello, I am new to this forum, I thought you guys could send me in the right direction. what I am trying to do is heat water with a wind turbine. the turbine produces 3 phase wild AC with voltage of 0 to 270V. related to wind speed. I am aware of the general practices with wind turbines-...

Hi Guys, I have a project to hand in before xmas. Basically I have to design a connector for a Wind turbine Blade. ie the Blade root, the one that connects to the hub. for this I have to come up with original ideas, so I cannot use another current of previous blade root connector. I have to...

Can someone explain something to me: I believe when throttling h1=h2. When calculating enthalpy drop across a FIXED converging nozzle then kinetic energy is caluclated using the following formula: h1-h2 = v2^2/2 - v1^2/2 If the nozzle is converging then there will be an increase in kinetic...

Can somebody aid my understanding: I am re-studying thermodynamics at the moment 6 years on from when I last studied it and could do with some clarification: If at the inlet to a steam turbine the pressure is at say 150bar and 550 degrees then there will be a respective enthalpy which is a...

Hi I am working on gas turbine design to investigate fatigue and creep failure and i want to design gas turbine blades for aircraft engine. I need to find out the dimention for CAd design if anyone help me that what should be the dimention of these blades and how many blades attached to...

Just wondering if the Betz limit is applicable to hydro turbines or if there is some analogous limit for hydro turbines?

In the event of grid failure islanding mode of operation of the electric generation unit is known as House load operation. Under this condition turbine generator produce only auxiliary load which is required to keep electric power plant unit alive. After restoration of grid the unit can be...

I am trying to solve an advanced heat transfer problem and I have a 2nd order ODE. I can solve the homogeneous solution easily, but I am having trouble with the non-homogeneous solution.Homework Statement Given a turbine blade and asked to model as a one-dimensional fin, subject to the...

Hi everyone, I am looking into subject matter to use as my final year project at university. The Tesla Turbine is something that I have recently looked into. I am interested to know the following... In the Tesla Turbine, water is 'injected' and border interactions of the different molecules...

Hi how much power is generated by moving a turbine in 40rpm by applying a force of 5kg on the blade at distance of 0.5m from center of rotar ...(the weight is drooped from height of 50m on the blade )... thanks

I'm looking to design a radial turbine to deliver 5 watts from compressed air (60-90psi) at 20,000 to 40,000 RPM. 30% efficiency would be suitable. I reviewed related patents-got little from them. I also reviewed my college textbooks, but they address incompressible, momentum transfer...

Hi all, I just looked at a thread involving a wind turbine on a car or something of that sort and I have a similar idea... but it does not involve a car. It is similar in the aspect of something creates energy , and you add something else to it to get more energy, but I'm not sure if the...

I'm looking for a summer project and I'm thinking of building a wind turbine to generate additional power for our home. I want it connected to the grid so that it runs our meter backwards for times where we arn't using more power than we generate (on vacation or something, electric company has a...

I am interested in the fluid dynamics of a turbine engine that compresses its exhaust gasses along its centerline. http://www.faqs.org/patents/app/20090067983 Any thoughts?

Homework Statement Neon gas at the rate of 100kg/min enters an adiabatic turbine at a temperature and pressure of 1073K and 1.5 MPa. The gas leaves the turbine at a pressure of 200kPa. If the real(actual) power output of the turbine is 370 kW, determine the isentropic efficiency of the...

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...