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1、第38卷第1期西北农林科技大学学报(自然科学版)Vol.38No.12010年1月JournalofNorthwestA&FUniversity(Nat.Sci.Ed.)Jan.20103高效保温材料在日光温室后屋面中的应用研究王云冰,邹志荣,杨建军,张志新,燕飞(西北农林科技大学园艺学院,陕西杨凌712100)[摘要]【目的】分析高效保温材料的热工性能,并测试其在日光温室后屋面中的应用效果,为日光温室后屋面保温节能材料的优选提供依据。【方法】以聚苯板、挤塑板、玻璃棉及常规材料干草帘作为后屋面保温层材料,分析其热工性能及热经济性能,并应用于日光温
2、室后屋面,通过温室内外温度变化、热量传递及植物生长情况评价其保温性能。【结果】挤塑板的各项热工性能指标较优,其温室热惰性指标为2.59,技术经济特征量为29.26(元·W)/(m42·K),以其作为后屋面保温层的3#日光温室内气温、土温均较高,后屋面外表面夜间放热总量602.92kJ/m,低于其他温室,其内西葫芦定植后前期各项生长指标与常规后屋面材料温室间存在显著差异,其产量达388472kg/hm。聚苯板技术经济特征量也较低,保温性能次之;玻璃棉由于附加抗压层而导致应用成本提高,常规材料干草帘的保温性最差。【结论】挤塑板具有良好的热工及保温性能
3、,较适合用于日光温室后屋面保温层。[关键词]保温材料;日光温室;后屋面;环境性能[中图分类号]S625.1[文献标识码]A[文章编号]167129387(2010)0120173208Applicationresearchofhighlyeffectivethermalinsulationmaterialsonsolargreenhouseback2roofWANGYun2bing,ZOUZhi2rong,YANGJian2jun,ZHANGZhi2xin,YANFei(CollegeofHorticulture,NorthwestA&FUniv
4、ersity,Yangling,Shaanxi712100,China)Abstract:【Objective】Weanalyzedthethermalperformanceofhighlyeffectivethermalinsulationma2terialsandtestedtheapplicationeffectofsolargreenhousewhenitwasusedtoconstructtheback2roof,inordertoprovideevidencefortheoptimizationofsolargreenhouseene
5、rgysavingandthermoinsulatingma2terials【.Method】Withpolystyreneboard,polystyrenecompressedfoamboard,glasswoolandhaycurtainasback2roofthermoinsulatinglayermaterials,weanalyzedthethermalperformanceandthermaleconomicperformance,andappliedthemtosolargreenhouseback2roof,andevaluate
6、dthethermalinsulationperform2ancebyinternalandexternaltemperaturevariationofgreenhouse,heattransfer,plantgrowthsituation.【Result】Allofthermalperformancesofpolystyrenecompressedfoamboardweregood,thegreenhouse4thermalinertindexwas2.59,technicaleconomiccharacteristicquantitywas2
7、9.26(yuan·W)/(m·K).The3#greenhousewhoseback2roofthermoinsulatinglayerwascomposedbypolystyrenecompressedfoamboardpresentedhigherairtemperatureandsoiltemperatureinside,andtheoutersurfaceofback2roof2releasedheatwas602.92kJ/m,lessthanothergreenhouse.Thepumpkingrowthindexesof3#gre
8、en2houseweresignificantlydifferentcomparedwithcommongreenhouse’satea
