摘 要:本文以空气源－水源复合热泵空调系统为例，主要分析了利用再生能源的水环热泵空调系统的节能性。
众所周知，水环热泵空调系统具有回收建筑物内部余热的功能，不会对环境产生严重的污染，具有较高的能效比，在全国有着广阔的应用前景。目前，为了使水环热泵空调系统能正常运行，要在水系统设置辅助加热设备，如电锅炉、燃油（气）锅炉等，这种用能方式十分不合理，不符合按质用能的原则。利用太阳能、水（地表水、井水、河水等）、土壤能、空气等可再生能源补充建筑物内部不足的余热量，就可以使传统的水环热泵空调系统省掉锅炉或减小锅炉容量，从而使机房占地面积减少，而且这些能源均具有资源无限、可以再生、与生态环境和谐的特点。
本文介绍了水环热泵空调系统多种辅助热源的形式，提出了由空气源热泵代替锅炉的空气源——水环复合热泵空调系统，对其建筑物内外分区不同的冷热负荷比下运行的性能进行了研究，分别计算了在不同室外温度下不同循环水温的情况下复合热泵循环系统的能耗，得出了最佳循环水温的范围。并和使用锅炉的传统水环热泵空调系统的能耗进行了比较，体现出空气源水环复合热泵空调系统具有较高的能效比。
关键词：水环热泵循环系统；能耗；循环水温
Abstract:In this paper, we take the Air Source-Water Source hybrid heat pump system for example and analyze the energy saving ability of water loop (WLHP) heat pump using renewable energy.
As everyone knows, WLHP has special effects on the recovery of waste heat in buildings. It doesn’t pollute the environment heavily. It has a less power consumption and has vast application perspective in our country. At present, in order to make the WLHP work regularly, heating facilities should be set up in water source such as electrical boiler, oil (gas) fired boiler and so on. But to use high level energy in this way is not reasonable, and mismatches the principle to use energy according to quality. Using the renewable energy such as solar energy, water energy (surface water, well water, river water, seawater), soil energy and air energy to reinforce the wanting energy in buildings can lessen the boiler capability of traditional WLHP. As a result, the workshop used for boiler can be saved. All these energies are limitless, renewable and harmonious with the environment.
The modes of different auxiliary heat sources in the air conditioning system of water-loop heat pump are introduced。 The paper proposes the air source-water source hybrid heat pump system, in which the boiler is replaced by air source heat pump, and explores its performance in different cold and heat load ratio between inner and peripheral zones, by analyzing the energy consumption of the hybrid heat pump air conditioning system under different ambient temperatures and different water temperatures, thus obtaining the optimal range of the best water temperature。 Comparison of energy consumption is made between it and traditional water loop heat pump in which the boiler is used, showing higher energy efficiency ratio of the air conditioning system of air source-water source hybrid heat pump。
Key words：water-loop heat pump system; energy consumption; water temperature
