Abstract
It is requested to develop a small and highly efficient heat exchanger for small size energy equipment such as fuel cells and CO_2 heat pumps. In the present study, the high pressure resistant microchannel stacked heat exchanger had been developed. The present device manufactured by diffused bond method can withstand high pressure at least 15MPa The heat transfer area per unit volume of the device is quite large. Since the distance between the microchannels in the device is small, the thermal resistance is small. Due to the high pressure resistance, this device can be applied for high flow rate condition with boiling and condensation. As the results, it is clarified that above features make the device to achieve very high performance of heat transfer rate with hundreds times larger than that of the existing heat exchanger.
