Question

An engine based on 50 moles of diatomic gas tries to split the difference between the Carnot and Otto cycles and invokes a three-step design: 1) an adiabatic expansion from 70 K to 350K, 2) an isothermal compression to the original volume, 3) an isovolumetric increase of temperature back to the original state.

a) What is the work done in the adiabatic process?

b) What is the work done in the isorthermal process?

c) What is the heat exhaust in the isothermal process?

d) What is the heat intake in the isovolumetric process?

e) What is the effeciency of the engine? How does it compare to Carnot?

f) If the engine were used as a heat pump, what would be its COP in heating mode?

g) Based on the COP, how manc cycles would be required to add XX Joules to the room

https://imgur.com/a/yJmdz

Answer 1