太阳能-低温热回收空气源热泵联合供暖系统集热侧设计计算方法
Design and calculation method of heat collection side for combined heating system of solar and low temperature heat recovery air-source heat pump
摘要：
基于传统太阳能热泵系统，提出了新型的太阳能-低温热回收空气源热泵联合供暖系统构建方式。针对系统集热侧的设计，建立了太阳能保证率、单位面积流量等关键参数的计算方法。以居住、商业、办公3类建筑为研究对象，得到了这3类建筑的推荐太阳能保证率。以实验为基础，测试得到了集热器单位面积流量的最优值。计算与测试表明太阳能保证率的大小与建筑热负荷特性、热泵机组制热性能、室外气象条件等因素相关，不同类型建筑的太阳能保证率差异显著，其数值大小主要与蓄热水箱所需的最高蓄热水温相关。
Abstract：
Based on traditional solar heat pump system, proposes the construction mode of a new type of combined heating system. Aiming at the collector side design, establishes the calculation method for key parameters such as solar fraction, flow rate per unit area and so on. Focus on residential, commercial and office buildings, obtains the recommended values of solar fraction for these three types of buildings. Gets the optimal values of flow rate per unit area through experiments. The calculation and test results show that the solar fraction is related to thermal load characteristic of buildings, heating capacity of units and outdoor climate conditions, and the values of solar fraction are also remarkably different in three types of buildings. The value of solar fraction mainly relates to the highest temperature of heat storage tank.
Keywords:solar, low temperature heat recovery air-source heat pump, thermal load characteristic, solar fraction, collector, flow rate per unit area, heating