تجزیه و تحلیل هزینه های انرژی بهبود یافته انرژی حرارتی ساخته شده به قدیمی خانه های قدیمی استرالیا

This paper investigates the likely impact of various renovations for six existing houses in South Australia mainly within the Adelaide climate zone representing a range of typical housing stock constructed before the adoption of NatHERS based energy regulations. These houses were built between the 1930's to 1990's, are sited on individual allotments, and are modelled in NatHERS rating software from an existing base case and then for a variety of both minor and more significant building shell and fabric upgrades; extensions to floor areas or major structural modifications are not considered. The costs associated with the upgrades is presented together with the thermal energy improvements, which bring older houses up from star ratings of 1-3 to the current minimum performance of 6, which reduces the demand for and greenhouse gas emissions of heating and cooling devices, for material and labour costs of $15-25k. Further analysis identifies the types of renovations that are the most cost effective.