Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-5: Space heating generation systems, the performance and quality of district heating and large volume systems
建筑物供暖系统.系统能量要求和系统效率的计算方法.第4-5部分:空间供暖系统 区域供暖和大容量系统的性能和质量