Investigation and Assessment on Microclimate Environment of Solar Greenhouse in North China

doi:10.3969/j.issn.1000-6362.2014.01.003

Abstract

Abstract: Micro climate of solar greenhouses in five provinces(Beijing,Tianjin,Hebei,Shandong,Shanxi)of north China were monitored for two years Eight indices were selected and defined to analyze and assess the solar greenhouse environment performance,which were daily mean temperature,daily maximum temperature,daily minimum temperature,night daily mean temperature,daily mean temperature difference at night,days number of daily minimum temperature ≤8℃,day relative humidity,and night relative humidity.The results showed that 8 indices above could reflect the solar greenhouse thermal performance factually in north China.The daily mean temperature was 10-15℃,daily maximum temperature was 20-30℃,daily minimum temperature was 5-10℃,night daily mean temperature was 5-10℃,daily mean temperature difference at night was 15-20℃,day relative humidity was 60%-80%,night relative humidity was 99%.According to the indices above,the high relative humidity indoor and low temperature at night was still serious,the environment performance of solar greenhouse in Shandong was the best.The research results had practical significance for realizing the environment performances solar greenhouses in north China,determining uniform assessment indices for solar greenhouse thermal environment,and enhancing the comparability between greenhouses.

Key words: Solar greenhouse, Application status, Performance, Assessment index, Temperature

XU Fan,MA Cheng wei,QU Mei,LIU Yang,GONG Bin bin,ZHANG Jian yu,CAO Yan fei,SUN Guo tao,LIU Chen xia. Investigation and Assessment on Microclimate Environment of Solar Greenhouse in North China[J]. Chinese Journal of Agrometeorology, 2014, 35(01): 17-25.

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