Isıl Konfor Sıcaklıklarına Bağlı Olarak Bir Konutun Enerji Performansının Değerlendirmesi: İzmir Örneği

Abstract

34% of the energy consumption in Turkey belongs to buildings and around 85% of this consumption is utilized for heating purposes. The operating characteristics of the HVAC systems in buildings directly affect both the building's thermal comfort and energy consumption. This study aims to determine the effect of operating conditions of the HVAC system on thermal comfort and energy consumption of residential buildings. For this purpose, the HVAC system for a 100 sqm residence in İzmir city has been investigated according to the single and double temperature set values at continues and intermittent operating modes for fully mechanically control or natural ventilation conditions. Thermal comfort satisfaction is expressed by PMV value. In this context, primarily the set temperatures of the HVAC system are determined for PMV = 0 which represents the best case of thermal comfort by using Design Builder software. Annual specific heating/cooling energy consumption, annual primer specific energy consumption, hourly PMV values during occupancy hours and statistical evaluation of these PMV values of a residential house are realized for considered 5 different operating conditions of HVAC system by using determined temperature set values. According to the obtained results, among 5 cases, the case with fully mechanical controlled, continuous regime, monthly dual heating/cooling operative set values, provides the maximum thermal comfort for normal expectation level of the thermal comfort with a cumulative frequency of 99.6%. The case, with fully mechanical controlled, intermittent regime, monthly single heating/cooling operative set values, consumes the minimum energy with specific satisfaction energy consumption of 2.04 kWh/m 2 /%KF.