温湿度独立控制空调系统在长沙地区的应用研究

发布时间：2018-01-20 13:07

本文关键词： 温湿度独立控制空调系统 COP 传统中央空调系统热泵新风处理系统优化再生热源　出处：《湖南大学》2014年硕士论文　论文类型：学位论文

【摘要】：构建节能和舒适型空调系统一直是我们空调领域追求的目标，特别在这个能源和环境问题突出的今天，达到这个目标的愿望更加迫切。随着传统中央空调的弊端逐渐显露并被关注，而温湿度独立控制空调系统展现出了可以消除这些弊端的优点，则人们对其的研究也越来越多，且其相关产品也在努力研发中。在现有的研究工作中，对三种常见新风除湿方法的温湿度独立控制空调进行统一对比分析的研究比较少，因此本文开展研究和优化不同形式的温湿度独立控制空调系统，这对其推广和应用有着十分重大的指导意义。本文首先介绍几种典型温湿度独立控制空调系统中的新风系统的组成和工作原理，并分析了各个重要装置的性能和优缺点；之后分别列出关于三种常见除湿方式下典型THIC型空调系统的能耗成分和系统效率的计算公式，而后分别计算出某高级办公楼在长沙地区夏季工况下各个工况点参数和三种常见新风除湿方式下典型THIC型空调系统的COP值，且得出同一种除湿方式下的最优系统形式，并与传统中央空调系统进行对比；最后通过调节各个重要状态参数、系统结构和再生热源方式对温湿度独立控制空调系统进行优化。本文先计算出以电加热室外空气为再生方式的一级和双级转轮除湿THIC型空调系统在最低理论再生温度条件下的COP值，体现出双级转轮系统的优越性，并通过比较除湿比例为1:1、1:2、2:1的双级转轮除湿系统的COP值，得出除湿比例为2:1时系统最优，且此除湿比例下的高温冷水预冷式系统优于排风热回收方式，为选择系统的预冷方式提供指导，且计算出双级风冷热泵转轮除湿系统的COP值，也得出其性能值在转轮除湿系统中最高；再计算一级和双级热泵式溶液除湿THIC型空调系统的COP值，，并通过比较除湿比例为1:1、1:2、2:1的双级溶液除湿THIC型空调系统的COP值，得出1:2除湿比例的系统最优；最后通过分析比较几种冷凝除湿THIC型空调系统的COP值，确定室内排风再热送风式冷凝除湿系统为该种除湿方式中最优系统形式。综上比较分析，三种温湿度独立控制系统中最优形式的COP值都比传统中央空调系统的高，并得出长沙地区夏季工况下最优温湿度独立控制空调系统。
[Abstract]:Building energy-saving and comfortable air conditioning system has been the goal of our air conditioning field, especially in this energy and environmental problems today. The desire to achieve this goal is more urgent. As the disadvantages of traditional central air conditioning are gradually revealed and paid attention to, the temperature and humidity independent control air conditioning system shows the advantages that can eliminate these disadvantages. People are also more and more research on it, and its related products are also in the efforts to develop. In the existing research work. There are few researches on the temperature and humidity independent control air conditioning of three common fresh air dehumidification methods, so this paper studies and optimizes the different forms of temperature and humidity independent control air conditioning system. This is of great significance to its popularization and application. In this paper, the composition and working principle of several typical air conditioning systems with independent temperature and humidity control are introduced, and the performance, advantages and disadvantages of each important device are analyzed. Then the calculation formulas of energy consumption and system efficiency of typical THIC air conditioning system under three common dehumidification modes are listed respectively. Then the COP values of typical THIC type air conditioning system under three common fresh air dehumidification modes are calculated respectively under the summer working conditions of a certain advanced office building in Changsha area. The optimal system form under the same dehumidification mode is obtained and compared with the traditional central air conditioning system. Finally, the air conditioning system with independent control of temperature and humidity is optimized by adjusting the important state parameters, system structure and regenerative heat source. In this paper, the COP value of the first stage and two-stage rotary dehumidification THIC air conditioning system with electrical heating outdoor air as regeneration mode is first calculated under the condition of the lowest theoretical regeneration temperature. This paper shows the superiority of the two-stage runner system, and by comparing the COP value of the two-stage runner dehumidification system with the dehumidification ratio of 1: 1 and 1: 2: 1, the optimal system is obtained when the dehumidification ratio is 2: 1. The precooling system with this dehumidification ratio is superior to the exhaust heat recovery system, which provides guidance for selecting the precooling mode of the system, and calculates the COP value of the two-stage air-cooled heat pump runner dehumidification system. It is also obtained that its performance value is the highest in the runner dehumidification system. The COP value of the first and two-stage heat pump solution dehumidification THIC air conditioning system is calculated, and the dehumidification ratio is 1: 1 / 1: 2 by comparison. (2) the COP value of two-stage solution dehumidification THIC air conditioning system of 1: 1 is obtained, and the system with 1: 2 dehumidification ratio is optimized. Finally, by analyzing and comparing the COP values of several condensing and dehumidifying THIC air conditioning systems, the optimal dehumidification and dehumidification system is determined. The optimal COP values of the three independent temperature and humidity control systems are higher than those of the traditional central air conditioning systems, and the optimal temperature and humidity independent control air conditioning systems in Changsha area in summer are obtained.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU831

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