Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu

doi:10.11975/j.issn.1002-6819.2018.21.001

CORC > 兰州理工大学 > 兰州理工大学

	Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu
	J., Li ; H., Wang ; Z., Wang ; J., Huang ; C., Wang
刊名	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
	2018-11-01
卷号	34 期号:21 页码:1-7
关键词	Coal combustion Coal dust Economics Electron tubes Energy conservation Glass Heating Heating equipment Investments Sleep research Solar buildings Solar collectors Solar energy Space heating Temperature Thermal comfort Wind Economic and environmental benefits Environmental conditions Experimental buildings Indoor thermal environments Solar radiation intensity Sunspace Temperature fluctuation Thermal economy
ISSN号	10026819
DOI	10.11975/j.issn.1002-6819.2018.21.001
英文摘要	The traditional heating methods in winter, in Tibetan areas in China are relatively backward, and the indoor living environment is poor. Owing to the abundant solar energy in the Tibetan areas of China, the potential of solar heating is huge. In order to use solar energy to achieve the clean heating, two single buildings with a passive sunlight area of 170 m2 in Shanglangkanmu, a village of Hezuo in Gansu Province, were studied, as research objects, one of which used passive sunspace and cow dung direct-fired furnace for heating, and the other used passive sunspace and solar collectors for heating. The solar collector system has 7 sets of all-glass vacuum tube solar collectors. The collector surface was placed at an angle of 45° to the ground. It was positioned in the south, and the amount of collectors of each group was 30. All-glass vacuum tube was 1.8 m of length, 0.058 m of diameter, and 20.2 m2 of heat collection area. Under the same environmental conditions, the theoretical and experimental methods were used to compare the indoor thermal environment, systemic economic and environmental benefits. The test time was from March 20th to May 8th, 2018. The indoor and outdoor temperature, indoor and outdoor wind speed, solar radiation intensity and other parameters were investigated. The data were automatically recorded by computer. The research results show that in the 48 d test period, the days of living temperature higher than 14 in experimental building with the solar energy active and passive combined heating system is 47 d, indoor minimum temperature of 13.3 is for only 1 day, the heat supply of the system in addition to individual extreme weather, can satisfy the heating needs of the building well, indicating that the system's energy supply stability is well, anti-interference ability is strong. When the outdoor environment minimum temperature is -8.6, the average indoor temperature of experimental building with combined sunspace and active solar heating system is 16.3, which is 7.3 higher than that of the contrast building, between the two buildings the highest temperature difference is 11.5, and the temperature fluctuation of the experimental building is small. The temperature in vertical height is evenly distributed, the indoor thermal comfort is well, the temperature of experimental building can completely reach the indoor temperature by 14 through the solar active heating, and the temperature of kang can be maintained at 22.3-34.7 during night sleep time, it belongs to the human body sleep comfort temperature which improves the comfort of people during sleep. The solar energy active and passive combined heating system satisfies the heating demand of the building well. The temperature in contrast building with the passive sunspace and the cow dung direct combustion furnace is nonuniform, the difference of temperature is distinguished, the living room temperature is generally lower than 12. Compared with the contrast building, the experimental building with solar energy active and passive combined heating system can reduce 4.3 t standard coal in the heating season, which can reduce the CO2, dust, SO2, and NOx emissions by 10.7, 2.92, 0.322 and 0.161 t, respectively. The dynamic investment payback period is 4.9 a. It proves the feasibility, energy saving and economy of the system, and can be utilized to guide the optimal design and popularization of solar energy active and passive combined heating systems in different regions. © 2018, Editorial Department of the Transactions of the Chinese Society of Agricultural Engineering. All right reserved.
语种	中文
出版者	Chinese Society of Agricultural Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114835]
专题	兰州理工大学能源与动力工程学院
作者单位	1.China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou; 730050, China; 2.Western China Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Key Laboratory of Energy Supply System Drived by Biomass Energy and Solar Energy of Gansu Province, Lanzhou; 730050, China; 4.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	J., Li,H., Wang,Z., Wang,et al. Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu[J]. Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,2018,34(21):1-7.
APA	J., Li,H., Wang,Z., Wang,J., Huang,&C., Wang.(2018).Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu.Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,34(21),1-7.
MLA	J., Li,et al."Performance of solar active-passive combined heating system in Tibetan areas of southern Gansu".Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering 34.21(2018):1-7.