POOL BOILING HEAT TRANSFER OVER MICROCHANNEL SURFACES WITH ETHANOL AT ATMOSPHERIC PRESSURE

摘要

The growing trend in miniaturization has brought forth boiling as an important research topic for augmentation of heat transfer in electronic cooling application. Pool boiling has the ability to dissipate a large quantity of heat while maintaining a small temperature difference. The heat dissipation capacity of pool boiling is further augmented through the use of enhanced microchannel surfaces. The objective of this work is to investigate the pool boiling performance of various microchannel structures using ethanol as the fluid medium. Ethanol has higher heat of vaporization compared to refrigerants and lower saturation temperature compared to water. Hence it has the potential to be used as an alternative cooling medium. This investigation will focus on experimentally studying the effect of enhanced surface structures on pool boiling of ethanol at atmospheric pressure.