Question

In an ideal constant volume cycle, the pressure and the temperature at the beginning of compression are 97 KN/m2 and 40o C respectively. The compression ratio is 7. The heat supplied during the cycle is 1200 KJ/Kg of working fluid determine.
(i) The thermal efficiency of the cycle and
(ii) The work done during the cycle per kg of working fluid..​

Answer 1

Answer:

Thermal efficiency of Otto Cycle:

Compression ratio: r = v1/v2

It is given that 

Comparing it to the derived equation, Ta resembles T1 and Tb resembles T2. 

T2 is the temperature where compression stops and the constant volume heat addition starts.

∴ Tb is the temperature where constant volume heat addition starts.