The paper presented two heat transfer coefficients: apparent heat transfer coefficient and real heat transfer coefficient. Apparent HTC is overall HTC, which is affected by many factors, such as liquid heat dissipation; on the other hand, real HTC is the HTC between heater and liquid film, which only relates to spray momentum. Local spray cooling experiments and PDA measurement experiments were conducted and the real heat transfer empirical correlation was developed. A half empirical and half analysis model involving the heat dissipation is acquired. At last, experimental apparent HTC was compared with the computed value to check the heat transfer model. It is shown that it is possible to predict HTC with pure water coolant and full cone sprays for non-boiling spray cooling.

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