地源热泵空调系统变水温节能方式研究

发布时间：2018-01-14 16:11

本文关键词：地源热泵空调系统变水温节能方式研究　出处：《苏州科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：变水温运行管理模式目前是一种应用范围尚未普及的空调节能方式,由于其各地区以及各系统间存在的差异,导致该调节方式无法在应用范围内大规模进行推广,但其仍有显著的节能效果。变水温调节研究是建立在定水温、定流量的地源热泵系统基础上,在保证空调室内环境处于舒适度范围的前提下,根据末端负荷的变化提高或降低出水温度从而达到提高机组效率,降低能耗的效果。本文主要是以地源热泵系统定流量、定水温运行工况为对比对象,研究地源热泵空调系统在采用变水温控制是否具有可行性以及节能效果。首先通过理论研究,确认变水温调节方式在GSHPS上是否具有节能潜力,并且通过实际工程案例分析其在夏季制冷以及冬季供热的节能效果。具体实际案例是以苏州地区某办公楼地源热泵系统为对象,对其进行变水温调节,调节方式为:在夏季制冷(冬季采暖)工况下工况下根据室外气候(室内负荷)的变化提高(降低)机组的出水温度,室内(末端)负荷的变化主要是通过冷冻水(热水)供回水温差来体现的,同时在调节过程中测试记录整个夏季制冷和冬季采暖工况下变水温运行的数据。为了更好的体现地源热泵系统采用变水温调节的节能效果,在获得实际系统运行的数据后,采用BIN参数法以及空调冷负荷时间频数法(CLTF)对夏季运行进行计算分析,该计算方式为估算,误差较小,不影响节能效果的分析效果。分析结果表明变水温调节应用在地源热泵系统上具有可行性且明显的节能效果。并且在研究过程中发现在部分负荷工况下进行变水温调节过程中,负荷率越低,节能效果越明显。同时以杭州某办公楼地源热泵系统为对比对象,探讨了环境的不同对该节能方式的影响,对比结果表明地域导致的气候条件差异对变水温调节具有明显的影响,不同的调节模式适用范围较窄,各地区需研究出其适应的调节方式。由于地源热泵系统的普及应用,其节能工作也随之进行,本次研究致力于构建一套适用于苏州浅埋式地源热泵系统的变水温调节模式,对其进行变水温调节不单单能够提高机组效率,降低能耗,为社会节能工作作出贡献,更有利于提高地源热泵系统市场竞争力,推动其在整个社会的应用范围。
[Abstract]:The operation management mode of water temperature is a kind of application of energy-saving air-conditioning is not yet universal, due to the differences in the various regions and between different systems, leading to the regulation within the scope of application to carry out a large-scale promotion, but it still has significant effect in energy saving. Variable water temperature control research is based on the fixed temperature, foundation the constant flow of ground source heat pump system, to ensure that the indoor environment is the premise of comfort air conditioning range, according to the changes of terminal load increase or decrease the water temperature so as to improve the unit efficiency, reduce the energy consumption effect. This article is based on the GSHP system constant flow, constant water temperature operating conditions for the comparison object, the study of ground source heat pump system variable water temperature control is feasible and energy-saving effect in the first. Through theoretical research, confirm whether variable temperature regulation in GSHPS with Festival Can the potential, and through the actual project case analysis in the summer cooling and winter heating energy saving effect. The actual case is an office building in Suzhou area of ground source heat pump system as the object of variable temperature regulation on the regulation for cooling in summer (winter heating) under conditions according to the outdoor (indoor climate load) change and improve (decrease) the water temperature of the unit, indoor (Mo Duan) the change of the load is mainly through the chilled water supply and return water temperature difference (hot water) to reflect, at the same time the test record the data of water temperature operation throughout the summer cooling and winter heating conditions in the adjustment process. In order to reflect the effect of energy saving of ground source heat pump better with variable water temperature regulation, in the actual system data, using the BIN parameter method and the cooling load time frequency method (CLTF) was calculated for the analysis of Xia Jiyun. The calculation for estimation error is small, does not affect the effect of energy saving effect analysis. The analysis results show that the application of variable temperature regulation has obvious energy-saving effect and feasibility in GSHP system. And in the course of the study found that in the condition of partial load variable temperature regulation process, the load rate is low, the energy saving effect is more obvious. At the same time in an office building in Hangzhou ground source heat pump system for the comparison object, discusses the influence of the different environmental energy-saving methods, the comparative results show that the regional differences caused by climatic conditions have obvious influence on the variable temperature regulation, different regulation pattern of narrow scope, the need to adapt to the study because of adjustment. The popularization and application of ground source heat pump system, the energy saving work also, adjust the variable water temperature in this study is committed to building a suitable Suzhou shallow ground source heat pump system Section mode, variable temperature regulation can not only improve the efficiency of the unit, reduce energy consumption, contribute to the energy saving work of the society, but also improve the market competitiveness of the ground source heat pump system, and promote its application in the whole society.

【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU831

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