1.1. Improving heat transfer efficiency
Heat transfer plays an important role in numerous applications. For example, in vehicles,
heat generated by the prime mover needs to be removed for proper operation. Similarly,
electronic equipment’s dissipate heat, which requires a cooling system. Heating,
ventilating, and air conditioning systems also include various heat transfer processes.
Heat transfer is the key process in thermal power stations. In addition to these, many
production processes include heat transfer in various forms; it might be the cooling of a
machine tool, pasteurization of food, or the temperature adjustment for triggering a
chemical process. In most of these applications, heat transfer is realized through some
heat transfer devices; such as, heat exchangers, evaporators, condensers, and heat sinks.
Increasing the heat transfer efficiency of these devices is desirable, because by increasing
efficiency, the space occupied by the device can be minimized, which is important for
applications with compactness requirements. Furthermore, in most of the heat transfer
systems, the working fluid is circulated by a pump, and improvements in heat transfer
efficiency can minimize the associated power consumption.