What are two examples each of the following effects of heat -change in temperature -change of state
-change in size
Answers
Answer:
Benefits of Waste Heat Recovery
Benefits of 'waste heat recovery' can be broadly classified in two categories:
Direct Benefits:
Recovery of waste heat has a direct effect on the efficiency of the process. This is reflected by
reduction in the utility consumption & costs, and process cost.
Indirect Benefits:
a) Reduction in pollution: A number of toxic combustible wastes such as carbon monoxide
gas, sour gas, carbon black off gases, oil sludge, Acrylonitrile and other plastic chemicals
etc, releasing to atmosphere if/when burnt in the incinerators serves dual purpose i.e.
recovers heat and reduces the environmental pollution levels.
b) Reduction in equipment sizes: Waste heat recovery reduces the fuel consumption, which
leads to reduction in the flue gas produced. This results in reduction in equipment sizes of
all flue gas handling equipments such as fans, stacks, ducts, burners, etc.
c) Reduction in auxiliary energy consumption: Reduction in equipment sizes gives
additional benefits in the form of reduction in auxiliary energy consumption like electricity