An Industrial Heat Pump for Steam and Fuel Savings

Author(s): Rajnikant S. Jadhao and Tejay V. Lanjewar

Currently many consumers in the India are facing with increasing shortages of electricity and petroleum gas. Prices have yet to stabilize and continue to increase as the shortages continue. What can then consumers do when facing with high heating bills and the need to stay warm and comfortable ? The answer to this may come from alternate heating systems. One such alternative to current heating systems is called a heat pump.
A heat pump is defined as an electrically driven device used to transfer heat energy from one location to another. A heat pump can be used as a heating unit, an air-conditioning unit or a water heater. Industrial heat pumps are a class of active heat-recovery equipment that allows the temperature of a waste-heat stream to be increased to a higher, more useful temperature. Consequently, heat pumps can facilitate energy savings, when conventional passive-heat recovery is not possible. The focus is on the most common applications, with guidelines for initial identification and evaluation of the opportunities being provided. Heat pump is a device that can increase the temperature of a waste-heat source to a temperature, where the waste heat becomes useful. The waste heat can then replace purchased energy and reduce energy costs. However, the increase in temperature is not achieved without cost. A heat pump requires an external mechanical- or thermalenergy source. The goal is to design a system in which the benefits of using the heat-pumped waste heat exceed the cost of driving the heat pump. Heat can be extracted from various sources such as cooling tower water or various heating sources.

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