Abstract Aiming at the problems existed in current design and construction of solar greenhouses，
including poor thermal accumulation capacity in wall，low land utilization rate，shortage of soil resources
and slow construction speed，etc.，this paper innovatively designed a prefabricated solar greenhouse actively
accumulating thermal by water module（GH1）．The paper also conducted measurement and comparetive
analysis on the indoor temperature，ground temperature and relative humidity between GH1 and ordinary solar
greenhouse（GH2）．The results showed that during the consecutive sunny days，the highest temperature at
day time and lowest temperature of GH1 were 1.2 ℃ and 1.8 ℃ higher than that of GH2，respectively．And the
average temperature at night was 1.2 ℃ higher，and average ground temperature of GH1 was 1.5 ℃ higher than
that of GH2．During consecutive cloudy days，the average day time temperature of GH1 was 5.3 ℃ higher
than that of GH2，4.0 ℃ higher at night，and average ground temperature was 2.0 ℃ higher．During extreme
weather，the average temperature of GH1was 4.8 ℃ higher than that of GH2，and average ground temperature
was 1.8 ℃ higher than that of GH2．The test results for 31 consecutive days showed that the average minimum
temperature of GH1was 1.1 ℃ higher than that of GH2，and average night temperature was 3.8℃ higher than
that of GH2．When it is sunny，the average relative humidity of GH1 was 14.7 percentage point lower than
that of GH2．And when it was cloudy，it was 4.1 percentage point lower than that of GH2．In summary，the
technical scheme for solar greenhouse actively accumulating thermal by water module is feasible, and its overall
thermal accumulation performance is obviously better than that of the ordinary solar greenhouses．Especially
under consecutive cloudy and extreme rain and snow conditions，it can maintain a higher indoor temperature
and ground temperature．
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