he temperature at the Lower Convectione (LCZ) of a solar pond (hot water storage section also called LCZ) is measured to be 75 'C while the ambient temperature is 20 C. A Carnot cycle is assumed to use the heat extracted from the hot water storage section of the pond (at 75 'C) to run a power generation cycle while its condenser reject heat to the atmosphere at the surface of the pond (at about 20 *C) Assume no heat loss through the wall or the surface of the pond (this is not zero in practice) and no more energy gain through the sun during the heat extraction period (i.e. night-time or cloudy period). At these conditions, the temperature of the hot water section gradually drops from 75 "C down to 20 *C (variable high temperature source), as heat is extracted by the Carnot cycle from the high temperature source. Determine the work that can be extracted by this solar pond per kg of hot water stored in the LCZ of the solar pond. Note: Have a look at internet sources to get yourself familiar with solar ponds 000 000 0 SACOLD - Upper Connective Zone (UCZ Gradient layer Non Convection Zone INCZ) HOT Lower Convection Zone (LCZ) ar pond located at RMIT Bundoora East Campus used as a solar thermal collector and storage Mark 7: The key assessment criteria." Understanding the question Sensible approach