Effect of Different Refrigerant Injection Techniques on Heat Pumpcycle Performance | ||
| Engineering and Technology Journal | ||
| Article 18, Volume 32, Issue 10, October 2014, Pages 2576-2586 PDF (459.49 K) | ||
| DOI: 10.30684/etj.32.10A.18 | ||
| Authors | ||
| Abdual Hadi N. Khalifa; Johain j. faraj; Anmar Adnan | ||
| Abstract | ||
| Refrigerant injection techniques are considered as modifications to vapor compression refrigeration systems to improve the performance of these systems when operating at high or low ambient temperatures. In this study a liquid and vapor refrigerant injections were implemented using heat exchangers arrangement. An investigation to the effects of these techniques on the performance of refrigeration cycle was conducted. A decrease in discharge temperature was obtained using hybrid injection cycles from 20% to 19% when the ambient temperature varies from 14C to 8C. Also the decrease in pressure ratio varied from 24% at an ambient temperature of 14C to 18% at 8C. The enhancement in performance factor varied from 35% at 14 C to 28% at 8 C. | ||
| Keywords | ||
| Heat pump; vapour injection; liquid injection | ||
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