Analysis of Savings on Electricity Consumption in Room Air Conditioning by Using R1270 (Propylene) Refrigerant Instead of R32 capacity of 13,000 Btuh

Abstract

Global Warming Potential (GWP) is a serious problem whose impact can affect the stability of the atmospheric environment, Refrigerant R-32 (Difluoromethana) contains GWP: 675 but does not contain ODP (Ozone Depleting Potential) while R1270 (Propylene) refrigerant is non-ODP and have GWP: <4. The equipment used in the study was a prototype of a split air conditioner cooling machine for a work room with a cooling capacity of 13,000 Btuh. Methodology by testing the performance of the R32 AC-Split unit according to the 850gram refrigerant mass nameplate at suction pressure: 115 Psig while R-1270 with the refrigerant mass: 300 gram at suction pressure: 90 Psig. The test is carried out until the temperature reaches a stable with an operating time: 90 minutes. From the results of tests and analysis of calculations performed, obtained an average air temperature of the evaporator R- 32/R1270: 19.1°/19.2°C, cooling effect: 267.9/336.7, compression work: 89.3/80.16, COP: 3.0/4.2, refrigerant mass:850/300gram and electric current: 3.5/2.4 Ampere. Savings in refrigerant and electricity consumption reached 31.4%.