集中型热泵供热系统热水输配管网典型问题实测分析
Field measurement and analysis on typical issues of hot water distribution networks in heat pump systems for centralized space heating systems
摘要：
介绍了对我国北方寒冷地区8个集中型热泵供热系统热水输配管网的调研与实测情况。结果显示，系统供暖季耗热量普遍高于建筑合理的热需求。经过测试与分析得出，导致耗热量偏大的主要原因为输配热损失大、管网水力不平衡以及建筑围护结构漏热，其中，前2个问题普遍存在于集中型供热系统且难以解决。提出了在设计热泵供热系统时，宜采用分散的系统形式。
Abstract：
Presents the field measurement results of the operational performance of water distribution networks in eight heat pump systems for centralized space heating in cold regions of North China. The results show that heat consumption amount during the heating season generally exceeds the reasonable demand. A thorough measurement and analysis shows that the main causes of the higher heating consumption are heat distribution loss, hydraulic imbalance and building envelope heat loss, and the first two causes are common in the centralized space heating systems and hard to be solved. Suggests to adopt a distributed space heating system using heat pump as the heat source.
Keywords:heat pump system, heating system, distribution network, heat loss, hydraulic imbalance