Experimental Study of the Circulation Air Volume of Recirculation Evaporative Cooling

摘要

This paper introduces the technology of re-circulation evaporative cooling (REC), which uses a portion of supply air as secondary air to make cool water used to indirectly cool outside air through a heat exchanger. The circulation volume of secondary air is one of the main factors that have an impact on the effectiveness of REC. According to the technology, a set of apparatus was set up. The cooling effect was tested under different circulation volumes of secondary air in summer. The test results show that the cooling effectiveness rapidly increases and then levels off with the increase of the ratio of circulation volume. We conclude that there is a proper range of the circulation volume.