Print ISSN: 1681-6900

Online ISSN: 2412-0758

Author : Adnan, Anmar

Effect of Different Refrigerant Injection Techniques on Heat Pumpcycle Performance

Abdual Hadi N. Khalifa; Johain j. faraj; Anmar Adnan

Engineering and Technology Journal, 2014, Volume 32, Issue 10, Pages 2576-2586

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 14C to 8C. Also the decrease in pressure ratio varied from 24% at an ambient temperature of 14C to 18% at 8C. The enhancement in performance factor varied from 35% at 14 C to 28% at 8 C.