Numerical and experimental studies on micro coatings for development of cooling heating system

Abstract

In the current energy sectors, the performance expected from the heat exchangers plays a vital role in the development of cooling/heating systems for various applications. There is a tremendous need to decrease the energy loss and to increase the efficiency of heat exchangers have created a progressively significant responsibility for the researchers. The researchers, as well as the designers of heat transfer, are devoting their interest towards increasing the heat transfer rate between the heat exchanger surface and the heat transfer fluid (HTF) through several methods. Conventionally adopted enhancement for heat transfer technique is incorporation of prolonged exterior surface/fins to airside. However, this approach increases the overall weight of the system and pressure drop, obstructs airflow and the pumping power. In addition, the challenges in the existing enhancement method of heat transfer are very complex in design, size, long-term performance and economic considerations. On the other hand, heat transfer can be augmented using nanofluids. Nevertheless, due to the extensive range and the difficulty of the nanofluids arrangement, heat transfer mechanisms using nanofluids are still quite restricted. This could be minimized with the support of recent advancements in the arena of coating technology, which provides an opportunity to enhance the heat transfer when the heat exchanger exterior surface is coated with high thermal conductivity materials. newline newline newline