データセンタ向け外気冷房型空冷パッケージ空調機の開発（ポンプサイクルにおける性能評価）
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概要
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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 improved COP when outdoor temperature is especially low. In this report, the performance at the pump cycle was evaluated with a real machine of the test site. As a result of the verification, the stability of driving at the pump cycle was confirmed. In addition, it was shown the relation between outdoor temperature and total COP, and high driving efficiency at the low outdoor temperature.