夏热冬冷地区空调系统温湿度独立控制技术探讨

发布时间：2018-06-20 18:44

本文选题：辐射吊顶 + 独立新风系统　；参考：《扬州大学》2015年硕士论文

【摘要】：传统的风机盘管加新风空调系统存在热湿耦合处理、难以适应热湿比的变化以及风机盘管湿工况运行等方面的问题,不仅能耗大而且会导致霉菌繁殖和传播,影响室内的空气品质。辐射吊顶结合独立新风系统作为一种新的空调系统形式,其特点是将温度湿度分开处理,有效避免了传统空调系统存在的问题。本文对辐射吊顶结合独立新风系统应用于住宅建筑的热舒适性、节能性和经济性进行了研究。本文第二章研究了辐射吊顶结合独立新风系统应用于住宅建筑的热舒适性。采用Airpak软件建立了住宅模型,分别采用不同送回风形式,以及不同辐射面的室内气流组织进行数值模拟,并从温度场和速度场角度对不同工况下的模拟结果进行对比分析；接着对采用辐射吊顶结合独立新风系统的房间进行了舒适性分析。本文第三章为实验部分,具体分析了辐射吊顶结合独立新风系统在实际工程中的运用,并实际测量了稳定运行工况下,房间内的温度变化,实验结果与模拟结果吻合度较高,模拟结果具有较高的可信度。同时对采用辐射吊顶结合独立新风系统常出现的结露问题,在分析结露现象和原理的基础上,结合工程应用,提出了防止结露的措施。本文第四章和第五章在热舒适性研究的基础上,进一步研究了辐射吊顶结合独立新风系统的节能性和经济性。首先用DeST软件计算建筑各项全年逐时负荷。接着建立能耗计算模型,对两种空调系统的全年运行能耗进行了计算分析。其次,在能耗分析的基础上,建立初投资计算模型,对两者的初投资和全年运行费用进行了计算,并采用静态经济评价方法和动态经济评价方法对辐射吊顶结合独立新风系统进行了评价分析,体现出良好的经济性,目前辐射吊顶在实际工程中应用的不多,市场认可度不高,但随着辐射吊顶结合独立新风系统应用的普及,在初投资方面其与传统风机盘管的价格差距会越来越小,到那时辐射吊顶结合独立新风系统在经济性方面的优势会完全表现出来。通过对辐射吊顶结合独立新风系统应用于住宅建筑热舒适性、节能性和经济性的研究,为其在夏热冬冷地区的推广应用提供参考。
[Abstract]:The traditional Fan-Coil Unit and fresh Air conditioning system has the heat and humidity coupling treatment, which is difficult to adapt to the change of the ratio of heat to humidity and to the operation of the Fan-Coil Unit under wet conditions. It not only consumes energy but also leads to the propagation and propagation of mold. Affect indoor air quality. As a new type of air conditioning system, radiation ceiling combined with independent fresh air system is characterized by the separation of temperature and humidity, which effectively avoids the problems existing in the traditional air conditioning system. In this paper, the thermal comfort, energy saving and economy of radiation ceiling combined with independent fresh air system in residential buildings are studied. In the second chapter, the thermal comfort of radiation ceiling combined with independent fresh air system in residential buildings is studied. The residential model is established by Airpak software. The numerical simulation of indoor airflow is carried out by using different return air forms and different radiation surfaces, and the simulation results under different working conditions are compared and analyzed from the point of view of temperature field and velocity field. Then, the comfort of the room with radiation ceiling and independent fresh air system is analyzed. The third chapter of this paper is the experimental part. The application of the radiation ceiling combined with the independent fresh air system in the actual project is analyzed, and the temperature change in the room under the steady operation condition is measured. The experimental results are in good agreement with the simulation results. The simulation results have high reliability. At the same time, on the basis of analyzing the phenomenon and principle of condensation, combined with the engineering application, the measures to prevent the condensation of dew are put forward for the problems often occurring in the radiation ceiling combined with the independent fresh air system. In the fourth and fifth chapters, based on the study of thermal comfort, the energy saving and economy of radiation ceiling combined with independent fresh air system are further studied. First, the time-by-time load of the building was calculated with the software of rest. Then the energy consumption calculation model is established, and the annual energy consumption of the two air conditioning systems is calculated and analyzed. Secondly, on the basis of energy consumption analysis, the calculation model of initial investment is established, and the initial investment and annual operating cost are calculated. The static economic evaluation method and the dynamic economic evaluation method are used to evaluate and analyze the radiation ceiling combined with the independent fresh air system, which reflects the good economy. At present, the radiation ceiling is not used much in the actual project, and the market recognition is not high. However, with the popularization of radiation ceiling combined with the application of independent fresh air system, the price gap between the radiation ceiling and traditional fan coil units will become smaller and smaller in initial investment. By then, the economic advantages of the radiation ceiling combined with the independent fresh air system will be fully demonstrated. The application of radiation ceiling and independent fresh air system to the thermal comfort, energy saving and economy of residential buildings is studied, which provides a reference for its popularization and application in hot summer and cold winter area.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU834.9

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