Main Article Content
Abstract
In daily life we come across many examples of heat transfer. Heat transfer is the energy interaction due to a temperature difference in a media. A heat exchanger is an equipment that is used to transfer heat from one fluid to another, usually through a separating wall. Heat exchangers are employed for different applications such as steam power plants, chemical processing plants, building heating, air conditioning, refrigeration systems, etc. In the field of engineering heat transfer enhancement is a major factor in thedesign of heat exchangers. Heat transfer enhancement in heat exchangers is done by using nanofluids. Nanofluids are the fluids in which nano-sized metallic powders( such as Al2O3 TiO2, MgO, CuO..etc) are suspended in base fluids( such as water, ethylene glycol, and engine oil..etc). This paper reviews the recent developments in the field of heat transfer enhancement of various types of heat exchangers by using various nanofluids.