【作者】 刘德彧；

【导师】 王晓纯； 高建岭；

【作者基本信息】 北方工业大学 ， 机械电子工程， 2003， 硕士

【摘要】 水源热泵作为一项节能环保技术，在一些西方先进国家已得到广泛应用，但由于热泵系统的技术含量高以及所用主要大型配件国内不能生产等各种原因，我国在热泵的研究和应用方面与西方先进国家差距较大。为缩小与国外的差距，促进我国节能环保事业和经济与社会的发展，本文结合北京市教委社科发展基金项目和来自北京、山东、哈尔滨等地区横向联合研究单位的资助，对水源热泵系统进行了全面深入的综合研究。 文中根据热力学和数学理论分析了热泵的节能原理，给出了热泵能效比与水源关系的数学表达式。基于工程应用实际，建立了热泵运行的经济指标，为热泵在我国的应用提供了依据。 在理论分析和对国外先进技术跟踪研究的基础上，本文研究开发了新型水源热泵。这种新型水源热泵采用的是法国产的DANFOSS系列最新型号的涡旋式压缩机。文中开发了多台涡旋机并联技术，成功地解决了单台涡旋机功率偏小无法满足大功率水源热泵需求的矛盾。在并联技术中，开发了回油装置，成功地解决了并联技术中回油不均衡等制约并联技术应用的问题。文中在输出功率240kW的热泵中，设计了回热装置，使该热泵能适用于高寒地区。热泵的主要技术指标经中国计量科学院检测，能效比达到1：4.2，该指标达到国内领先水平。 文中提出了一整套水源热泵系统的控制方案，该方案可以有效地控制热泵的运行，并能根据能量的需求自动调节压缩机的启停数量。同时设计了多种保护压缩机和机组正常工作的功能，一旦出现运行故障，能有效防止热泵的损坏。 文中的研究项目，都有具体的实际工程应用，针对实际工程中地下水源回灌困难等问题，本文提出了低温回灌、二次取热、单井回灌等多项行之有效的方法。工程应用结果显示了该项成果对节能环保事业的促进作用。更多还原

【Abstract】 As a technology of energy efficiency and environment protection, Water Source Heat Pump(WSHP) had been applied to the field of heating, ventilating and air conditioning widely in developed countries. At present, because the core of some necessary subassemblies can’t be produced in China, some remarkable technology gap in the field of research and application between China and the developed countries has been brought on. To reduce this gap, with the help of the social and natural fund of Beijing education committee and some institutes of Beijing, Shandong, Harbin, integrated research of WSHP has been made deeply.According to the theory of thermodynamics and mathematics, this paper analyzes the principle of energy efficiency, provides the mathematical expression about energy-efficiency ratio(EER) and water source(WS). Then the technical and economical characteristic of WSHP is studied. Calculating results of example projects show that the WSHP is superior to the traditional air conditioning system in the technical and economical respects.Based on the advanced technology of some developed countries, by theory analyses, a new style of WSHP composed of four scroll compressors parallel connection is developed. The latest DANFOSS series of scroll compressors made in France are used in this WSHP. It resolved the problem of the power of a single scroll compressor on the small side successfully. The coefficient of performance (COP) of this system is 1:4.2, checked by China institute of metrology, proved lead in China. Thorough analysis and calculation of various subassemblies about optimizing design of WSHP is made in this paper, supplying a reliable basis for safe, economical, convenient design and construction of the WSHP system.To analyze and calculate the performance of the compressor, a series of equations about condensation temperature, evaporation temperature, refrigeration power, power output by a curve simulation method based on the practice data can be gained. Comparing these equations,some significative conclusions have been get.A series of control systems are designed in this WSHP, which ensure the heat pump circulate efficiently and determine which compressors start or stop automatically according to energy requirement. Then multipurpose function is designed to protect the compressors and the whole system.All the researches mentioned in this paper have been applied to engineering practice. Analyzing the water delivery of the well source, a new method, called single well source technique, is presented to solve the problem of water output and input. It has been proved that the research results have much promotion in the field of energy-efficiency and environment protection.According to three kinds of WSHP we designed, some design methods of WSHP have been put forward. All of the methods and new types of WSHP have made remarkable benefits.更多还原