水模块主动蓄热日光温室应用性能分析

Analysis on Application Performance of Solar Greenhouse Actively Accumulating Thermal by Water Module

针对目前日光温室设计和建造过程中存在的墙体蓄热能力较差、土地利用率低、土壤资源缺乏和施工速度慢等问题,创新设计了一种装配式水模块主动蓄热日光温室(GH1)。对GH1与普通日光温室(GH2)的室内温度、地温、相对湿度进行测定和比较分析。结果表明:连续晴天时,GH1白天最高温度和最低温度分别较GH2高1.2℃和1.8℃,夜间平均温度高1.2℃;平均地温高1.5℃。连续阴天时,GH1平均温度白天较GH2高5.3℃,夜间高4.0℃;平均地温高2.0℃。极端天气时,GH1平均温度较GH2高4.8℃,平均地温高1.8℃。经连续31 d的测试,结果显示,GH1的平均最低温度较GH2高1.1℃,夜间平均温度较GH2高3.8℃。晴天时,GH1平均相对湿度比GH2降低14.7百分点,阴天时比GH2降低4.1百分点。综上所述,水模块主动蓄热日光温室技术方案可行,总体蓄热性能明显优于普通日光温室,尤其连续阴天和极端雨雪天气条件下,能保持较高的室内温度和地温。

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.