KAJI EKSPERIMENTAL PENGARUH PERUBAHAN TEMPERATUR PADA PENAMBAHAN AIR PENDINGIN DI KONDENSOR TERHADAP KINERJA MESIN PENDINGIN

Abstract

Astronomically, Indonesia is located at 6^O LU (North Latitude) - 11^O LS (South Latitude) and 95^O BT (East Longitude) -141^O BT (East Longitude). Therefore, in some cases humans need a comfortable air environment to be able to work optimally, namely 20-25^OC and inertness of 40-60%. The purpose of this study is to analyze the coefficient of performance, determine the effect of water temperature on the COP and determine the effect of load coolant to the performance of the cooling engine from R32. Therefore testing of the vapor compression coolant is done by varying the temperature of the water in the condenser, the test results obtained by the comparison value of COP with the time of testing in the morning, afternoon and night with a value of 4.1 in the morning, 3.8 in the afternoon and 4, 0 at night. And for the value of the effect of water temperature on the COP in the morning it was obtained 3.8 for 30^OC water temperature, 4.1 water temperature 25^OC, 4.4 water temperature 20^OC. During the day 3.5 obtained for 30^OC water temperature, 3.8 water temperature 25^OC, 4.0 water temperature 20^OC. At night 3.7 for 30^OC water temperature, 3.9 25^OC water temperature, 4.2 water temperature 20^OC. And for the value of the influence of COP on coolant loads in the morning we get a load of 100watt COP 4.42, 200watt COP 4.10, 300watt COP 3.79. During the day the load is 100 watt COP 3.99, 200 watts 3.83, 300 watts of COP 3.52. At night load 100watt COP 4.22, 200watt COP 3.90, 300watt COP 3.75. Then it can be concluded that the higher the COP value obtained, the more efficient a vapor compression cooling machine works.