Vapor injected compression with economizing in packaged air conditioning systems for high temperature climate

被引：18
作者：
Bahman, Ammar M. [1 ,2 ]
Ziviani, Davide [2 ]
Groll, Eckhard A. [2 ]
机构：
[1] Kuwait Univ, Mech Engn Dept, Coll Engn & Petr, POB 5969, Safat 13060, Kuwait
[2] Purdue Univ, Ray W Herrick Labs, Sch Mech Engn, 177 S Russell St, W Lafayette, IN 47907 USA
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2018年 / 94卷
关键词：
ECU; Vapor injection; Economizer; COP; Modeling; Optimization; SOURCE HEAT-PUMP; REFRIGERANT INJECTION; SCROLL COMPRESSOR; FLOODED COMPRESSION; UNIVERSAL APPROACH; PERFORMANCE LIMIT; CHANNEL FLOW; EXCHANGERS; R410A; REGENERATION;
D O I：
10.1016/j.ijrefrig.2018.07.024
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Operating packaged air conditioning systems at extremely high temperature ambient conditions result in severe performance degradation. In this paper, vapor injection (VI) with economization is proposed to improve system performance. An Environmental Control Unit (ECU) operating with R-407C has been retrofitted with an economized vapor injection (EVI) system and experimentally characterized in side-by-side psychrometric chambers. The performance of the EVI system for superheated and saturated injection conditions were compared to the case of without injection at different operating conditions. The results showed that the EVI system reduced the compressor discharge temperature by up to 5 degrees C, and improved the cooling capacity and COP by up to 12.7% and 3.1%, respectively. The experimental data have been used to develop, tune, and validate a detailed steady-state cycle model. At last, the model has been employed to optimize the economizer geometry in order to maximize the system COP under such extreme weather conditions. (C) 2018 Elsevier Ltd and IIR. All rights reserved.
引用
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页码：136 / 150
页数：15
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