Question

the recovery of waste heat depends on: a)quantity of waste heat b)quality of waste heat c)apart from quality and quantity of waste heat there may be other constraints related to plant d)quantity and quality of waste heat is not relevant for its recovery

Answer 1

Most of the energy consumption lead to generation of heat which is used domestically or industrially.

One third of this heat is lost to the atmosphere at different stages.

In order to minimize the waste heat, heat recovery is done.

Heat recovery can be indirect by using a heat exchanger or directly.

The direct way is less costly.

To undertake heat recovery we must consider the level or rather the quality of the heat and the quantity.

For a low level heat waste, the quantity must be large in order to do a heat recovery.

Therefore :

Recovery of waste heat depends on quantity and quality of the waste heat.

The correct answer is C.

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