DIN V 18599-5-2005 建筑物能效.加热、冷却、通风、家用热水和照明用净能量、最终和最初能量需求的计算.第5部分:加热系统的最终能量需求
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