Research Of Wall-mounted Flat-plate Solar Water Heating System Integrated Application In Residential Buildings In Chongqing Area

Energy efficiency and environmental protection are becoming more and more important during the development of the economic society. The annual sessions of NPC and CPPCC have been convened in Beijing in March, 2016. The 13 th Five Year Plan Guidelines of the country also has been published, in which there have the energy efficiency and environmental protection be written, the country is paying more attention to the environment and energy. The solar hot water system can offer hot water to the users by absorbing the solar energy, it can reduce the fossil energy consumption and the polluting gases emission, and it’s getting wider and wider application. Although the solar energy is relatively poor in Chongqing, the solar hot water system gets better application effect in the summer and transition season. The research of wall-mounted solar water heating system integrated application in residential buildings can extend the application field of the solar water heating system.Firstly, we establish an experimental solar hot water system to test the solar radiation and application effect of the system through July to the December. The test datas show the solar radiation value on the surfaces in different angles and different azimuthes; and on the base of the test datas, the key influence factors of the system operation are evaluated; at the same time, the daily and monthly performance of the system through July to the December are also given in this part.After the experimental study, a simulation system is established which is based on the TRNSYS System, and a comparison between the measured value and simulation value is shown to verify the correctness and reliability of the mathematical model, so that the simulation system can be used to operate through a year.Use the simulation system to evaluate the whole year performance of the solar hot water system, firstly, the whole year solar radiation on the surfaces of different angles and different azimuthes are shown, then the best installation angle and installation azimuth of the wall-mounted flat-plate solar water heating system are confirmed, and the whole year simulation system performance show that the system application effect is relatively effective from April to September, meanwhile, the options of the assistant heat source, economic analysis, energy efficiency analysis and environment benefit analysis are also calculated in this paper.The sunshine time on the wall-mounted flat-plate surface is evaluated by the sunshine analysis software, and some suggestions about the lowest installation layer and architectural design are slao given. At the last, synthesizing the lowest installation layer and architectural layout characteristic in Chongqing, some strategies are shown in the paper in order to promote the wall-mounted flat-plate solar water heating system integrated application in residential buildings.