日本語フィールド
著者:岡本明夫、有馬博史、金政焄、秋山泰有、池上康之 読み: オカモトアキオ、アリマヒロフミ、キムジョンフン、アキヤマヒロクニ、イケガミヤスユキ題名:プレート式蒸発器におけるアンモニアおよびアンモニア/水混合媒体の局所強制対流沸騰熱伝達特性発表情報:日本冷凍空調学会 年次大会2007 講演論文集 ページ: C107キーワード:local heat transfer, ammonia / water mixture, plate type evaporator, OTEC, visualization概要:抄録:The power generation efficiency of the small thermal energy conversion represented by ocean thermal energy conversion (OTEC) and discharged thermal energy conversion (DTEC) is greatly influenced by the performance of an evaporator. Ammonia or ammonia / water mixture as a working fluid and a plate heat exchangers are supposed to be suitable for both systems. Measurements of local boiling heat transfer coefficients and visualization were performed for ammonia / water mixture on a vertical flat plate heat exchanger. The result shows that in case of ammonia / water mixture, the local heat transfer coefficients decreased with an increase of vapor quality, and was influenced by mass flux, averaged heat flux, and saturated vapor pressure.英語フィールド
Author:Akio Okamoto, Hirofumi Arima, KIM Jeong-Hun, Hirokuni Akiyama, Yasuyuki IkegamiTitle:Characteristic of Local Heat Transfer in Forced Convective Boiling of Ammonia and Ammonia/Water Mixture on the Plate Type EvaporatorAnnouncement information:Proceeding of 2007 JSRAE Annual Conference Page: C107Keyword:local heat transfer, ammonia / water mixture, plate type evaporator, OTEC, visualizationAn abstract:The power generation efficiency of the small thermal energy conversion represented by ocean thermal energy conversion (OTEC) and discharged thermal energy conversion (DTEC) is greatly influenced by the performance of an evaporator. Ammonia or ammonia / water mixture as a working fluid and a plate heat exchangers are supposed to be suitable for both systems. Measurements of local boiling heat transfer coefficients and visualization were performed for ammonia / water mixture on a vertical flat plate heat exchanger. The result shows that in case of ammonia / water mixture, the local heat transfer coefficients decreased with an increase of vapor quality, and was influenced by mass flux, averaged heat flux, and saturated vapor pressure.