hii frends,(adsbygoogle = window.adsbygoogle || []).push({});

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 were: rated power of turbine = 820 kw

speed at full load = 5000 rpm

mass flow rate at full load = 11.3 tn/hr

speed at normal load = 3000 rpm

mass flow rate at normal load= 8.1 tn/hr

to find out the efficiency u need to find out the output shaft power 4 tat mass flow rate

the formula for output shaft power is = (2*3.14*N*T)/60000 KW

but the problem is tat turbine is not fitted with any device(eg dynamometer) 2 find out the torque at the shaft

is there any other method 2 find out the output torque developed on the turbine shaft?

are there any other formulas 2 find out the output power corresponding 2 the input mass flow given?

or are there any other suggestions 2 find out the max efficiency point. pls suggest

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Steam turbine efficiency

**Physics Forums | Science Articles, Homework Help, Discussion**