地源热泵水蓄能复合系统综合性能评价研究

发布时间：2018-12-15 22:12

【摘要】：能源危机日益严重,从节能减排的角度出发,地源热泵与水蓄能结合的空调工程的经济及环保优势逐渐凸显。而随着上述复合系统应用的日益广泛,如何科学评价该系统已经成为暖通行业亟需解决的一个问题。目前关于复合空调系统综合性能评价的方法体系还存在评价模型参差不齐、评价因子不明确及评价方法主观性强等问题。本课题以地源热泵水蓄能复合空调系统综合性能评价为主线,以eQuest能耗模拟软件为依托,在总结和分析国内外研究现状基础上,采用网络层次分析法(ANP)、聚类分析法和权重敏感性分析法,对评价因子选择及其权重的确定、权重敏感性分析等做了深入研究,主要工作及结论如下:(1)在参考相关文献及规范基础上,结合地源热泵及水蓄能空调系统的特性选定了如下评价因子:常规能源代替率、年转移峰电量率、年谷电利用率、制冷剂环保性能、二氧化碳减排率、静态投资回收期及净现值率。在专家调查问卷的数据基础上,通过Super Decisions软件计算得到各个评价因子对应权重。(2)利用eQuest能源模拟软件得到的全年逐时负荷及建立的数学模型,分别对办公类及商场类建筑进行多变量工况计算,并对计算结果分别进行归类分析,确定了当地源热泵水蓄能复合系统用于上述两类建筑时,不同得分对应的优劣等级。(3)将指标权重敏感性分析法引入复合系统综合性能评价体系来测试各权重变化对评价结果的影响程度。通过研究发现,对于应用于办公类建筑和商场建筑的复合空调系统,敏感性指标分别是静态投资回收期和二氧化碳减排率;静态投资回收期和净现值率。(4)利用提出的综合评价方法,对一办公建筑的地源热泵水蓄能复合系统进行评价,得出该系统虽然属于优等,但仍然存在静态投资回收期较高、运行策略有待优化等问题,该应用实例说明本文提出的综合评价方法不仅能够用于评价系统性能,还能够为系统的优化方向提供指导。
[Abstract]:The energy crisis is becoming more and more serious. From the point of view of energy saving and emission reduction, the economic and environmental advantages of the air-conditioner project with the combination of ground-source heat pump and water-storage energy are becoming more and more prominent. With the increasing application of the composite system, how to evaluate the system scientifically has become an urgent problem in HVAC industry. At present, there are still some problems in the comprehensive performance evaluation method system of composite air conditioning system, such as uneven evaluation models, unclear evaluation factors and strong subjectivity of evaluation methods. Based on the comprehensive performance evaluation of ground-source heat pump water-energy storage composite air conditioning system and eQuest energy consumption simulation software, based on the summary and analysis of domestic and foreign research status, the network analytic hierarchy process (ANP),) is adopted in this project. Cluster analysis and weight sensitivity analysis are used to study the selection of evaluation factors and their weights, weight sensitivity analysis and so on. The main work and conclusions are as follows: (1) on the basis of reference to relevant literature and norms, Combined with the characteristics of ground-source heat pump and water-storage air conditioning system, the following evaluation factors are selected: conventional energy substitution rate, annual transfer peak electricity rate, annual valley electricity utilization rate, refrigerant environmental performance, carbon dioxide emission reduction rate, Static investment payback period and net present value rate. On the basis of the data of expert questionnaire, the corresponding weights of each evaluation factor are calculated by Super Decisions software. (2) the hourly load and mathematical model established by eQuest energy simulation software are obtained. The multivariable working conditions of office buildings and market buildings are calculated, and the results are classified and analyzed respectively, and the local source heat pump water storage compound system is determined to be used in the above two types of buildings. (3) the index weight sensitivity analysis method is introduced to the comprehensive performance evaluation system of composite system to test the influence of each weight change on the evaluation results. Through the research, it is found that the sensitivity index of the composite air conditioning system used in office buildings and market buildings is the static investment recovery period and the carbon dioxide emission reduction rate. Static investment recovery period and net present value rate (NPV). (4) by using the proposed comprehensive evaluation method, a ground-source heat pump water storage compound system in an office building is evaluated, and the results show that the system is superior, However, there are still some problems such as the high payback period of static investment and the need to optimize the operation strategy. The application example shows that the proposed comprehensive evaluation method can not only be used to evaluate the system performance, but also provide guidance for the optimization direction of the system.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83

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