Technology Study On The Solar Air Collector Module Used In Northern Rural

With the development of economy, gradually the income level of farmers has increasedgradually. The rural building energy consumption has become into the non-ignore problem ofChinese building energy. The rural commodity consumption increase fast. At present, coal isthe major commercial energy in the rural areas of the north. Consumption of winter heatingaccounts for more than90%of the annual consumption. It not only increase the burden of thepeasants, but also cause serious pollution of indoor and outdoor environment because of theinefficient combustion of simplified boiler. In the northern, the rural building disperserelatively, and the receiving sun light area is large for which solar heating has a gooddevelopment potential. In this paper, solar air collector module that apply to the rural house innorthern region is taken as object of research, theoretical analysis and experimental researchon it was made.Heat balance equation for the solar air collector module heat transfer process wasestablished, and it was solved by software Matlab, then the heat transfer process in the solarair collector modules were analyzed. According to the theoretical analysis, a solarcollector module installation was designed, and a series of experimental study onits structure and operating parameters were made. The mathematical model of the solar aircollector module was established, then numerical simulation of the mathematical model wascalculated by software Fluent. The test results of solar collector module and the numericalresults fitted each other well.The study on collector module structure show that: as other structural parameters weresame, thermal efficiency was increased15%after the flat-plant absorber changed intozigzagged one, and the best collector is the zigzagged one. For the flat-plate collector modules,thermal efficiency was increased10%when other structural parameters are the same, doublethe number of holes in absorber; and that was increased10%after three partitions was placedin the channel. Thermal efficiency of collector module with angle of65°was higher than thatwith angle of60°in winter.The most influential factor for in thermal efficiency of the running collector module isthe solar irradiance, followed by the air flow through the collector, and the best air flow was20m3/h.The single type of solar air heating collector module was used in a rural residential inBeijing, and its economic analysis was done. About50%of heating costs could be reduced, aswell as good economic and social benefits.