新型空调大温差水系统设计及应用研究

发布时间：2018-06-25 08:56

本文选题：空调能耗 + 大温差　；参考：《大连海洋大学》2017年硕士论文

【摘要】：20世纪以来,能源问题一直是困扰我国乃至全世界的一个问题,各国都在积极的寻找解决这一问题的办法,节能也随之成为整个社会研究的焦点。作为占总能耗三分之一的建筑能耗,对其节能的研究从来没有停止。本文正是基于建筑节能的大背景下,对建筑节能中的空调节能进行研究。本文对既有空调运行中出现的大流量,小温差问题,结合室内南北向负荷差异较大等现象,提出对空调冷冻水的冷量进行梯级利用,实现空调冷冻水系统的大温差来解决这一问题,从而减少空调的能耗。主要研究的内容有以下几点:冷冻水大温差对冷水机组、水泵、风机盘管等能耗部件的性能影响;提出多种空调水系统优化方案来达到冷冻水冷量的梯级利用,通过计算分析各种方案的能耗情况,并与既有空调的能耗进行分析对比,最终优化出一种最佳的大温差水系统方案。本文得出的主要结论有:在使用大温差的情况下,冷冻水泵的轴功率大幅下降,节约能耗;但是冷冻水的温差变大,末端设备风机盘管的制冷能力和除湿能力随着冷冻水温度的升高而降低,随着供回水温差的增大而降低;而对于冷水机组,在供水温度不变的情况下,温差增大对于冷水机组的单位制冷量能耗的影响不大。设计优化出一种新型空调大温差水系统,使南向室内的回水作为北向室内的供水,实现了冷冻水冷量的梯级利用。通过对优化系统能耗的定量分析,发现其节能量能达到18.48%。新型空调大温差水系统在实际工程中具有节能效果和应用前景。
[Abstract]:Since twentieth Century, energy problem has been a problem that plagued our country and even the whole world. All countries are actively looking for ways to solve this problem. Energy saving has also become the focus of the whole society. As a building energy consumption of 1/3 of total energy consumption, the research on energy saving has never stopped. This paper is based on building energy conservation. Under the big background, this paper studies the energy saving of air conditioning in building energy saving. In this paper, the large flow, small temperature difference in the existing air conditioning operation and the large difference in the north and South load of the indoor air are put forward in order to make the cascade utilization of the cooling capacity of the refrigerated water of the air conditioner and realize the large temperature difference between the cold and cold water system of the air conditioning to solve this problem and thus reduce the problem. The main contents of the research are as follows: the effects of the large temperature difference of the frozen water on the performance of the energy consumption components such as the chiller, the pump, the fan coil and so on, and the optimization of various air conditioning water systems to achieve the cascade utilization of the refrigerated water cooling capacity, and to analyze the energy consumption of various schemes by calculating and analyzing the energy consumption of the existing air conditioners. The main conclusions are as follows: in the case of large temperature difference, the shaft power of the frozen water pump decreases greatly and saves energy, but the temperature difference of the frozen water becomes larger and the cooling capacity and dehumidification ability of the fan coil in the terminal equipment increase with the temperature of the frozen water. The decrease is reduced with the increase of the temperature difference between the water supply and the water supply, and for the cold water chiller, when the water supply temperature is constant, the temperature difference has little effect on the energy consumption of the unit cooling capacity of the chiller. A new type of air conditioning large temperature difference water system is designed and optimized, and the backwater in the South chamber is used as the water supply in the North chamber, and the freezing water cooling is realized. According to the quantitative analysis of the energy consumption of the optimized system, it is found that the energy of the new type air conditioning system of 18.48%. has the energy saving effect and the application prospect in the actual project.
【学位授予单位】：大连海洋大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU831

【引证文献】