Abstract
To decrease the power consumption of air-conditioning in the data centers, a packaged air・conditioner that contained the pump cycle was developed. The new air-conditioner has impmved COP when outdoor temperature is especially low. In this report, the performance at the p・mlp cycle was evaluated with a real machine of the test site. As a result of the verification, It was confirmed that cooling capacity was able to control by changing either the amount of the outdoor unit air volume or die pumping frequency.
