Effects of flash tank vapor injection on the heating performance of an inverter-driven heat pump for cold regions

被引：127

作者：

Heo, Jaehyeok ^{[1
]}

Jeong, Min Woo ^{[1
]}

Kim, Yongchan ^{[1
]}

机构：

[1] Korea Univ, Dept Mech Engn, Seoul 136713, South Korea

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2010年 / 33卷 / 04期

关键词：

Heat pump; Two-stage system; Variable speed; Compressor; Experiment; Injection; Performance; COP; SCROLL COMPRESSOR; SYSTEM;

D O I：

10.1016/j.ijrefrig.2009.12.021

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A heat pump has received much attention as substitute for the conventional boiler or heating coil because of its high efficiency. For the wide application of the heat pump, the most important design factor is the performance degradation upon its installation in tropical and cold regions. In this study, the effects of flash tank vapor injection on the heating performance of a two-stage heat pump with an inverter-driven twin rotary compressor were measured and analyzed for compressor frequency ranging from 50 to 100 Hz at ambient temperatures of -15, -5, and 5 degrees C. The COP and heating capacity of the injection cycle were enhanced by 10% and 25%, respectively, at the ambient temperature of -15 C. The total mass flow rate of the injection cycle was 30-38% higher than that of the non-injection cycle. (C) 2010 Elsevier Ltd and IIR. All rights reserved.

引用

页码：848 / 855

页数：8

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