Analysis of Air Cooling (AC) System Auditorium Venue Third Floor Main Building of Politeknik Negeri Lhokseumawe

Abstract

The aims of this study are to calculate the cooling load system on the auditorium space of Politeknik Negeri Lhokseumawe (PNL). This calculation is expected to contribute the energy savings is the system of air (STU). This study is conducting on the third floor of PNL, at the Auditorium venue. The cooling load system by using Cooling load temperature difference (CLTD) system based on ASHRAE Handbook Fundamental, 1993. The calculation of cooling load based on secondary date, and then the result was compared to cooling load installed capacities. The result of the research found that the maximum cooler burden at culminate condition is equal to 116957 Btu/hr (9,74 ton of refrigerant), While the installed refrigeration capacities is 61080 Btu/hr (5,09 ton of refrigerant), here fond a lacking (decreasing) of refrigeration burden equal to 55857 Btu/hr (4,65ton of refrigerant}. If the installed burden (load) as according to re-calculation result, hence thrift gap still can be obtained equal to 14%, by paring down the illumination of light; altering set temperature pint in room; minimizing SC (Shading of coefficient); and lessen of infiltrate external air.