1. ASHISH S. UTAGE - Ph. D program in school of mechanical engineering in Dr. Vishwanath Karad MIT World Peace University, Pune.
2. Dr. KUNDLIK V. MALI - Professor and associate head in school of mechanical engineering in Dr. Vishwanath Karad MIT World Peace University, Pune.
Isenthalpic expansion is one of the major source of irreversibility in a typical split air conditioners (SAC). This paper presents the design analysis and experimental results of an ejector split air conditioner (ESAC). An ejector is employed in the SAC instead of a standard expansion device to recover expansion losses while improving cooling capacity and minimizing energy usage. A 5.2 kW nominal capacity SAC that was originally designed for HCFC-22 was used for performance testing. Initially, a baseline performance test was conducted in a psychrometric test chamber as per Indian standard IS 1391 part 1. The COP of the original SAC using HCFC-22 was 3.2, while the COP of modified ejector split air conditioner (ESAC) was increased by 28.12 % and found to be 4.1. With drop-in test, HC290 gave the COP of 4.6 which is 43.75 % higher compared to original SAC. Thus, use of HC-290 is an energy efficient and climate friendly alternative to HCFC-22 in Ejector split air conditioner.
Split air conditioner, HC-290, HCFC-22, Ejector expansion, Energy efficiency, Low GWP, Alternative refrigerants, Environment friendly refrigerant.