基于TRNSYS地源热泵系统能效计算方法的研究

发布时间：2018-01-09 22:07

本文关键词：基于TRNSYS地源热泵系统能效计算方法的研究　出处：《天津理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：中国能源利用率水平低下，我国产生单位GDP所消耗的能源量居高不下，每万美元GDP能耗是德国的4~5倍，是日本的8倍左右。地源热泵作为二十一世纪的可再生能源，受到了高度的重视，建筑能耗占社会终端能耗的很大比例，建筑节能是全社会“节能减排”的重要组成部分。地源热泵系统有多种形式，包括土壤源热泵，地表水源热泵，地下水源热泵，地表污水源热泵等等，截至2011年，，我国地源热泵总应用面积达到2.4亿平方米，但是实际应用情况存在诸多问题，如许多理论正在研究阶段，无法应用于实际项目中等等。本文介绍了目前国内外地源热泵评价方法与计算方法的发展情况，分析了地源热泵系统的应用特点，对地源热泵系统中土壤源热泵系统的实际运行能效水平进行分析，通过对实际工况下地源热泵机组与系统的实测与分析，找出影响系统与机组能效的关键运行参数，并得出他们之间的函数关系，并通过TRNSYS对地源热泵典型工况进行建模，得出模型下的能效值，对能效水平的模型进行验证。为下一步实际工程中土壤源热泵系统评价指标的得出打下基础，但是模型仍然需要进一步优化，基础数据也应随着项目数量的不断增多而丰富起来，提高模型的精确度，进而更加准确的反应土壤源热泵系统实际运行情况。
[Abstract]:The level of energy utilization in China is low and the energy consumption per unit GDP of China remains high. The energy consumption per 10 thousand US dollars of GDP is 4 times of that of Germany. Ground source heat pump (GSHP), as a renewable energy source in 21th century, has been highly valued, and the building energy consumption accounts for a large proportion of the social terminal energy consumption. Building energy saving is an important part of the whole society. Ground source heat pump system has many forms, including ground source heat pump, surface water source heat pump, ground water source heat pump, surface sewage source heat pump and so on, until 2011. The total application area of ground-source heat pump in China is up to 240 million square meters, but there are many problems in the practical application, such as many theories are in the research stage and can not be applied to the actual project and so on. This paper introduces the development of evaluation methods and calculation methods of ground-source heat pump at home and abroad, and analyzes the application characteristics of ground-source heat pump system. The actual operating energy efficiency level of ground source heat pump system in ground source heat pump system is analyzed, and the actual measurement and analysis of ground source heat pump unit and system under actual operating conditions are carried out. Find out the key operating parameters which affect the energy efficiency of the system and the unit, and get the functional relationship between them, and through TRNSYS to model the typical operating conditions of ground-source heat pump, get the energy efficiency value under the model. The model of energy efficiency level is verified, which lays the foundation for the evaluation index of ground-source heat pump system in the next practical project, but the model still needs to be further optimized. The basic data should be enriched with the increase of the number of projects to improve the accuracy of the model and then reflect the actual operation of the GSHP system more accurately.
【学位授予单位】：天津理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83

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