太阳能热泵与水源热泵联合供能系统设计及经济性分析（热动力工程专业论文）

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

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

摘要I

ABSTRACTII

第一章绪论1

1.1研究背景1

1.2国内外研究发展概况2

1.3研究内容3

第二章太阳能一地下水源热泵的模拟计算4

2.1太阳能热泵的性能模拟4

2.1.1计算模型4

2.1.2动态模拟及分析6

2.2水源热泵性能分析7

2.3太阳能热泵与水源热泵的经济比较7

第三章太阳能-地下水源热泵系统的应用10

3.1技术选择10

3.2水源热泵采暖制冷技术原理10

3.2.1水源热泵的基本原理10

3.2.2工艺流程11

3.3太阳能热泵系统12

3.3.1工程设计内容12

3.3.2系统工作原理13

3.4工程设计14

3.4.1建筑物冷热负荷参照指标14

3.4.2工程总体设计基本原理16

3.5运行系统设计17

3.5.1太阳能热水供应系统17

3.5.2水源热泵18

3.5.3机房建筑物工程19

3.5.4设备购置19

3.5.5供热管网工程19

3.5.6管网安装方案21

3.6采水井与回水井23

3.6.1水井水量估算及施工23

3.6.2水井施工24

总结25

参考文献26