Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 36, Issue 3, Pages 730-744Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2012.10.015
Keywords
Heat pump; Injection; Rotary compressor; Simulation; Cylinder volume
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Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea Government Ministry of Knowledge Economy [2010T100200474]
- Korea University
- Korea Evaluation Institute of Industrial Technology (KEIT) [2010201010028B] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In residential air-source heat pump systems, the refrigerant injection technique has rapidly developed in recent years due to its outstanding performance at low ambient temperatures. A numerical simulation model of a flash tank vapor-injection heat pump with a twin rotary compressor is newly presented in this paper. The performance of the twin rotary compressor with refrigerant injection was simulated using a loss and efficiency model. The model was validated by comparing the predictions with measured data. In addition, the model was used to analyze the performance characteristics of the vapor-injection heat pump according to the cylinder volume ratio of the twin rotary compressor. Based on the simulation results, optimum cylinder volume ratios were suggested for various design conditions, including for the fixed first cylinder volume, the fixed total cylinder volume, and the fixed heating capacity. (C) 2012 Elsevier Ltd and IIR. All rights reserved.
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