摘要

节约能源、提高能源利用率、开发利用新能源作为解决能源环境问题的重要手段，己被世界各国列为能源建设与发展战略的重点。太阳能一地下水源热泵因其节能性与环保性而具有广阔的发展前景。

本文在分析单一太阳能热泵、地下水源热泵优缺点的基础上针对天津气候特点提出了太阳能-地下水源热泵的概念。在研究太阳辐射能、太阳能集热器和水源热泵相关理论的基础上，对太阳能一地下水源热泵系统的串联和交替模式进行了模拟研究。本文建立了适用于天津地区的晴天瞬时太阳辐射模型，并在此基础上编制了集热器得热量的计算程序。为研究水源热泵性能，搭建了水源热泵实验台，选择了热泵机组各部件包括压缩机、蒸发器、冷凝器、膨胀阀等，热泵工作介质选为R134a。

最后本文使用费用年值法对太阳能一地下水源热泵进行技术经济分析，以费用年值最小为最佳方案。计算表明:在供热负荷确定的情况下，集热器面积为18m2时的交替运行方案为最优方案。

关键词：太阳能-地下水源热泵系统；串联；模拟；经济性分析

ABSTRACT

Saving energy, improving energy efficiency, developing and utilizing new energy as an important means to solve the problem of energy environment, have been listed as the focal point of energy construction and development strategy in the world.Solar energy-groundwater heat pump has a broad development prospect because of its energy-saving and environmental protection.

Based on the analysis of the advantages and disadvantages of single solar energy heat pump and ground water source heat pump, the concept of solar-ground water source heat pump is put forward according to the climate characteristics of Tianjin.Based on the study of solar radiation energy solar collector and water source heat pump the series and alternate modes of solar-ground water source heat pump system are simulated.In this paper, the instantaneous solar radiation model for sunny days in Tianjin is established, and based on this model, a program for calculating the heat of collector is developed.In order to study the performance of water source heat pump, a water source heat pump experimental platform was built. The components of the heat pump unit including compressor, evaporator, condenser, and expansion were selected. Expansion valve, heat pump working medium selected as R134a.

Finally, the cost annual value method is used to analyze the technology and economy of solar-ground water source heat pump, with the minimum annual cost as the best scheme.The calculation results show that the optimal scheme is the alternative operation scheme when the collector area is 18m2 when the heating load is determined.

Keywords: solar-ground water source heat pump system; series; simulation; economic analysis