Abstract
This paper investigated experimentally the influences of gas flow type, position of heat source and gas flow rate on the properties of a heat exchanger with a Self-Excited Mode Oscillating-Flow Heat Pipe (SEMOFHP). The SEMOFHPs were made from copper with an inner diameter of 3mm. Distilled water was used as working liquid. The results showed that the heat exchange capability of the SEMOFHP heat exchanger is about 3 times higher than that of a common tube heat exchanger. The heat exchanger unit used in the experiments was operated under counterflow, bottom heat source and high gas flow rate conditions. However, it was found that the unit could also work well with a top heat source arrangement. The heat recovery efficiency of the heat exchanger is slightly increased with the increase of inlet air temperature. The SEMOFHP heat pipe works only when the hot gas temperature is higher than the initial temperature.
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