Research On Rural Solar Energy Housing In Cold Regions

With the improvement of living standards in the rural areas of china, energy consumption in residential buildings in village is rising. In order to change the situation of the traditional rural housing on poor thermal performance and high energy consumption, the new-style energy-saving residence is applied. The research on solar energy applications is more conducive to the development and promotion of energy efficient buildings. It can effectively alleviate the situation of energy shortage. It has the great practical significance and far-reaching historical significance for popularization of energy-saving residence in rural areas.In this paper, the main objects of study are residential buildings in rural areas in Beijing. Based on the theoretical analysis of solar residence system, the studying team investigates the status of rural residential energy consumption in the suburbs of Beijing, and it takes some on-site measurements of the indoor environment of solar residence in the Gua Jia Yu village. The studying team also comprehensively researchs the thermal environment and energy consumption situation on the solar residence. Study shows that when the solar heating system is used, and the average outdoor temperature was only -3.7℃, the average indoor temperature of heating room can reach 10.1℃, the largest temperature fluctuation is only 3.1℃. The solar collector system can reduce energy consumption about 5878KWh for the farmers every year, It saves the equivalent of 2820 yuan for the cost of heating.In order to suit some of the more distressed rural areas, and further enlarge application areas of the new-style energy-saving residence in country, this paper adoptes the energy-saving strategy about passive solar house. According to the design and research on overall arrangement of residence and single building, as well as details structure, and through theoretical calculations and the use of DeST-h dynamic simulation software, this paper verifies the energy-saving effect on passive solar house design. The results indicate that the heating load of passive solar house in winter is 21.09W/㎡, which can basically meet the requirement of the building energy-saving design value as 20.6W/㎡ in urban areas in Beijing, however. The heating load of the traditional rual house is 67.79W/㎡, It is 3.3 times as amount as design standard value. When the average outdoor temperature was only -3.3℃, the indoor temperature fluctuation is small, which is only 3.6℃, and the average natural temperature is 3.16℃more than traditional rual house. Compared to the traditonal rual house, the passive solar house can save coal about 3540.25Kg during heating season, its energy-efficient ratio can get 69.1%. Through the economic evaluation of this scheme, we can see that the all beginning investment of passive solar house can be recovered in 7.35 years.The study shows that the passive solar house has the practical significance and popularization value in rural residential energy-saving, its prospects is broad in future and it should be applied in the vast rural areas in cold regions.