C-55 高温冷水熱源システムの開発

概要

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An energy saving system called Elevated Temperature Chilled Water (ETCW) System is developed for electronics manufacturing facilities. The ETCW System has the following characteristics. 1) Supply chilled water temperature is set at 12℃, which is higher than that in conventional system, so higher COP of chillers can be obtained. 2) A large temperature difference of 10℃ between return and supply chilled water is adopted, so that the flow rate of chilled water can be reduced. 3) Every 2 chillers are connected in series and the outlet temperature of the chilled water from the upstream chiller is set at 17℃, so the upstream chillers are operated with even higher COP. In addition, they can be operated with free cooling mode for a longer period of time. 4) Boiler is not required because of pre-heating by the 12℃ chilled water, heating by hot water from heat pump chillers and humidification by air washer.
社団法人空気調和・衛生工学会の論文
2006-09-05