Question

An ice plant is working on a reversed Carnot cycle produces 15 tons of ice per day.

The ice is formed at 00 C and water supplied is also at 00 C. The heat is rejected to

atmosphere at 250C. The heat pump used to run the plant is coupled to a Carnot

engine receives heat from a source at 2200 C and it rejects the heat to atmosphere.

The fuel Calorific value, 44.5 MJ/kg is used for supplying the heat. Determine the

following (i) power developed by the engine and (ii) fuel used/hr. Take enthalpy of

fusion of ice=334.5 kJ/kg.
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Answer 1

The heat extracted from the ice plant is in proportion to the amount of ice generated. If 15 tonnes of ice is generated per day, the amount of heat extracted = heat of fusion * amout of ice = 334kj/kg * 15 * 1000 =5010MJ