Abstract
Abstract An experiment was set up to investigate the heat transfer characteristics of spray cooling using mixtures of pure water with synthetic cutting fluid and emulsified oil. The heat transfer characteristics and the CHF (critical heat flux) behavior were studied in the traditional manner by measuring the heat flux versus the heater surface temperature. Different coolant mixtures showed different CHF values and heat transfer characteristics. A mixture of water with synthetic fluid has a higher heat removal capacity compared to pure water and has a peculiar CHF behavior (there are two CHF points). The emulsified oil and water mixture does not show the two CHF points phenomenon and has a lower CHF as compared to water.
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