A solar pond consists of a thin layer of fresh water floating ontop of a denser later of salt water. When the salty layer absorbssun light, it becomes hot, to 140 degrees C. The ambient temp isassumed to be 20 degrees C.
a) what is the maximum efficiency (Carnot's efficiency) of aheat engine operating of the solar pond?
b) If a real engine is able to achieve 0.4 of the efficiency of theCarnot engine, how many kWh energy would be generated per day froma 10 m x 20 m pond that captures 50% of the 5.5 kWh/m2solar insolation in the area?
c) How many houses, each consuming 500 kWh per (30-day) month, canbe supported by a nearby salty reservoir of 500m x700m thatcaptures 75% of the 5.5 kWh/m2 solar insolation in thearea?