In a Carnot engine with ammonia as the working fluid, the high temperature is 60C and as

Question:

In a Carnot engine with ammonia as the working fluid, the high temperature is 60°C and as QH is received, the ammonia changes from saturated liquid to saturated vapor. The ammonia pressure at the low temperature is 190 kPa. Find TL, the cycle thermal efficiency, the heat added per kilogram, and the entropy, s, at the beginning of the heat rejection process.