DIN V 18599-5-2016 建筑能源效率.加熱,冷卻,通風,生活熱水和照明對凈能源,最終能源及一次能源需求的計算.第5部分:供暖系統最終能源需求
Energy efficiency of buildings - Calculation of the net, final and primary energy demand for heating, cooling, ventilation, domestic hot water and lighting - Part 5: Final energy demand of heating systems