I found a challenging job to design a small turbine that will be used in as an expander in an Organic Rankine Cycle process. The turbine shape will be radial inflow turbine. Input design will be are isentropic enthalpy drop, gas density, volumetric flow rate, inlet temperature and pressure, and rotation velocity of turbine wheel.
Could anyone please advise me of the correct method that I am able to calculate output which includes diameters, total and static efficiencies, all absolute and relative temperatures, pressures, and velocities, and flow angles at stator inlet, stator exit, rotor inlet, and rotor exit?
The basic step for design of any turbo machine is the cycle analysis. Based on cycle analysis determine the basic parameters like mass flow rate, Temperature, pressure as a input. than use basic governing equations to determine the basic geometrical parameters. Use some standard non dimensional numbers to determine the require parameters.
The basic step for design of any turbo machine is the cycle analysis. Based on cycle analysis determine the basic parameters like mass flow rate, Temperature, pressure as a input. than use basic governing equations to determine the basic geometrical parameters. Use some standard non dimensional numbers to determine the require parameters.
Could you give me a suggestion about the iteration method for the preliminary design? I found difficulties to find out some geometrical parameter such as the rotor radius. Please take note that I am using the equation in H. Angier's book : Turbine Aerodynamics – Axial Flow and Radial Flow Turbine Design, New York, 2006 as guidelines.
I wonder if the ns (specific speed) is not at the optimum state, then we have to either reduce the rpm / flow rate because the entalphy drop already fixed in the system. Thank you.
Please refer my paper in ICEME 2005 and Turbo expo 2006.will help for your querry.
Hi Mr Chetan. Sorry for late seeing this thread again. Can you help me to guide me to your paper? Thank you. I really appreciated it.
Dear Leonardo give me some time for your requested paper. I am going to upload on Research Gate site very soon.
Okay.. Thank you. I am going to wait for your reply. Really appreciated it.
Dear Leonardo refer the paper i uploaded. Second paper i will upload soon.
Jose if possible can you please upload the papers you suggested?
A very good, basic reference text for turbine design is the book "The Design of High-Efficiency Turbomachinery and Gas Turbines" by D.G. Wilson and T. Korakianitis. I don't know if it is available on-line but it is a common enough reference to find in libraries and bookstores.
Yes Jose Prof. Roy has explain the design process nicely... i think the designer first need to listen the lecture and than refer my paper will surely give necessary idea for selection of different paramaters!!!
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