Energy and Exergy Analyses of Heat Pump Cycle with Refrigerant Injection Technology
Journal of Engineering
View Archive Info| Field | Value | |
| Title |
Energy and Exergy Analyses of Heat Pump Cycle with Refrigerant Injection Technology
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| Creator |
Khalifa, Abdul Hadi N.
Faraj, Johain J. Hasan, Hayder K. |
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| Description |
The effect of refrigerant injection techniques on the performance of heat pump system based on exergy analysis was studied theoretically. Three refrigerant injection techniques were used; the first was achieved by injected vapour in volume ratios from 1 to 7% in the accumulator. The second was injection liquid refrigerant in the discharge line with the aid of Liquid Pressure Amplification (LPA) pump, with volume ratios from 1 to 10%. The third was a hybrid injection with volume ratios of injected vapour and liquid varied from 1 to 3% and 1 to 10%; respectively. The following improvements in cycle performance were observed. For vapour injection technique, the best ratio of injection was 5%, the exergy destruction reduced by 21% and exergy efficiency enhanced by 14.6%. For liquid injection technique the best ratio of injection was 6%, the reduction in exergy destruction was 34% while the exergy efficiency increased by about 21.4%. The hybrid injection technique increased the exergy efficiency by 23% when the volume ratio of vapour and liquid injections are 3% each. The effect of condensing pressure on the cycle performance was studied also. The optimum exergy efficiency of the cycle was 54.55% achieved when the condensing pressure was 15 bars. |
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| Publisher |
College of Engineering | University of Baghdad
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| Date |
2016-11-01
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| Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
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| Format |
application/pdf
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| Identifier |
http://joe.uobaghdad.edu.iq/index.php/main/article/view/124
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| Source |
مجلة الهندسة; مجلد 22 عدد 11 (2016): Journal of Engineering (Eng. J.); 101-110
Journal of Engineering; Vol 22 No 11 (2016): Journal of Engineering (Eng. J.); 101-110 2520-3339 1726-4073 |
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| Language |
eng
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| Relation |
http://joe.uobaghdad.edu.iq/index.php/main/article/view/124/110
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| Rights |
Copyright (c) 2016 Eng. J.
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