Study on efficiency improvement of packaged air conditioners for year round cooling with indirect outdoor air cooling (study on control methods of room air temperature and superheat)

Tsuneo Uekusa, Masahide Yanagi, Shinji Kimijima, Sunao Kawai

研究成果: Article査読

抄録

The air conditioner which cools telecommunication equipment rooms or computer rooms must operate throughout the year. So we apply refrigerant pump cycle to the air conditioner to improve coefficient of performance (COP) at low outdoor air temperature. At first, this paper discusses two kinds of control methods. One is superheat control to manipulate refrigerant pump frequency. Refrigerant pump cycle controlled by this method can operate higher efficiency than that controlled by expansion valve. The other is room air temperature control method to manipulate air flow rate of condenser. Next, this paper discusses year round electric consumption comparison with conventional air conditioner. The electric consumption of the air conditioner with refrigerant pump is 50% shorter than that of conventional air conditioner.

本文言語English
ページ(範囲)2097-2101
ページ数5
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
67
660
DOI
出版ステータスPublished - 2001 8月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学

フィンガープリント

「Study on efficiency improvement of packaged air conditioners for year round cooling with indirect outdoor air cooling (study on control methods of room air temperature and superheat)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル