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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Fisheries > Bulletin > Bulletin of the Faculty of Fisheries > No. 79 >


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Title: 水袋モデル凍結時の電子式膨張弁と温度式膨張弁による冷媒制御の比較について
Other Titles: Comparison of Refrigerant Control With Electronic and Thermostatic Expansion Valve During Freezing watar Bag Model
Authors: 山路, 光徽 / 野口, 英雄 / 桐, 博昭 / 山下, 徹 / 半澤, 良一
Authors (alternative): Yamaji, Mitsuyoshi / Noguchi, Hideo / Kiri, Hiroaki / Yamashita, Toru / Hanzawa, Ryouichi
Issue Date: Mar-1998
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告. 1998, 79, p.21-30
Abstract: The Freezing efficiency of the evaporator for quick freezing was compared between one equipped with electronic control expansion valves(EEV) and one with thermostatic expansion valves (TEV) through the experiment of freezing watar bag model. For experimental freezig, the quick freezer was stocked with 40 vinil bags containig 8l of water following usual procedure taken by tuna fishing boats, and then the refrigerator was operated until the central temperature of the vinyl bags reached -55℃. A low temperature flow meter for refrigerant and a large-sized vacuum gauge (JIS ♯ 0.5) were newly installed for the experiment. As a result of this experiment, whereas TEV took 14.8 h to get the desired temperature (-55℃), EEV needed 12.3 h, shortening the time by 17%. We conclude that we can give full play to the efficiency of a refrigerating compressor by a narrow room and a small cost to install EEV.
Keywords: 電子式膨張弁 / 温度式膨張弁 / 冷媒流量 / 冷媒制御 / 過熱度 / electronic expansion valve(EEV) / thermostatic expansion valve(TEV) / refrigerant flow / superheat / refrigerant control
URI: http://hdl.handle.net/10069/9229
ISSN: 05471427
Type: Journal Article
Text Version: publisher
Appears in Collections:No. 79

Citable URI : http://hdl.handle.net/10069/9229

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