Performance Analysis of Solar Greenhouse After Active Lighting and Phase Change Heat Storage Technological Transformation(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Performance Analysis of Solar Greenhouse After Active Lighting and Phase Change Heat Storage Technological Transformation

Author(s):: WANG Chenchen1; BAO Encai1; LIU Lu1; ZOU Zhirong1; KANG Dong2; ZHOU Haiyuan1; (1.College of Horticulture,Northwest A&F University/Agriculture Ministry Key Laboratory of Protected Horticultural Engineering in Northwest,Yangling,Shaanxi 712100；2.Yangling Puzhao Agricultural Science and Technology Co.Ltd.,Yangling,Shaanxi 712100)

Keywords:: solar greenhouse; active lighting; phase change material; heat storage

Abstract:: In order to solve the problem of insufficient indoor lighting and low temperature during the cold season in the solar greenhouse,the two traditional solar greenhouses of Tangjiacun in Yangling district had been carried out active lighting and phase change heat storage technology transformation.The changes of environmental parameters such as temperature,humidity and light under different weather conditions were studied,and the untreated solar greenhouse was used as the control.The results showed that the active lighting greenhouse in sunny day could improve the indoor light intensity of about 6 197 lx compared with the control greenhouse,increase lighting rate by 46.8%,increased the average temperature of 2.7 ℃ and reduced the greenhouse nighttime humidity 10.53%.In cloudy or snowy days it could reduce the nighttime humidity by 7.94%.The phase change heat storage greenhouse in sunny night could be higher the temperature 3.5 ℃ than control,decreased the relative humidity 8.42%.In cloudy and snowy days the temperature it was about 2 ℃ higher than the control,and the humidity was 3.40% lower than the control.Therefore,greenhouse which had been through the two kinds of technological transformation had a good effect of heat preservation and heat storage,and these two technologies would provide an effective way for the upgrading of traditional solar greenhouse in the future.

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Last Update: 2018-03-30