摘要
利用温室南屋顶坡面顶端的卷帘机在较冷时段铺设保温被或较热时段铺设遮阳幕已成为温室节能的重要措施。以强力针刺毡/针刺毡/珍珠棉/强力针刺毡、强力针刺毡/针刺棉毡/强力针刺毡、强力针刺毡/针刺毡/定型网/强力针刺毡等3种保温被作为供热节能研究对象,以不同遮光率的斯文森系列遮阳幕作为供冷节能研究对象,利用SketchUp建立温室模型后经过EnergyPlus模拟计算,以保温被的传热系数和保温芯材的厚度为变量以遮阳幕的自然光吸收率为变量,选出负荷降低率高且经济性高的保温被和遮阳幕。其中强力针刺毡/二层针刺毡/三层珍珠棉/强力针刺毡为保温被的最佳选择,斯文森系列的Obscura80为遮阳幕的最佳选择。在1~2月、11~12月铺设强力针刺毡/二层针刺毡/三层珍珠棉/强力针刺毡组合的保温被,全年热负荷降低率可达19.9%;在4~9月铺设Obscura80遮阳幕,全年冷负荷降低率可达73.54%。
Utilizing the rolling shutter at the top of the south roof slope of the greenhouse to deploy insulation covers during colder periods or sunshade curtains during hotter periods has become an important measure for greenhouse energy conservation.Focusing on three types of insulation covers:Strong needle-punched felt/needle-punched felt/pearl cotton/strong needle-punched felt,strong needle-punched felt/needle-punched cotton felt/strong needle-punched felt,and strong needle-punched felt/needle-punched felt/profiled mesh/strong needle-punched felt for heating energy-saving research.For cooling energy-saving research,it investigates various shading rates of the Svensson series sunshade curtains.By establishing a greenhouse model with SketchUp and simulating with EnergyPlus,the study varies the thermal transmittance coefficient of the insulation covers and the thickness of the insulation core materials,as well as the natural light absorption rate of the sunshade curtains,to select covers and curtains that reduce the load rate and have high economic efficiency.Among them,the combination of strong needle-punched felt/double-layer needle-punched felt/three-layer pearl cotton/strong needle-punched felt is identified as the best choice for insulation covers,and the Obscura80 from the Svensson series is the best choice for sunshade curtains.Deploying the insulation cover combination of strong needle-punched felt/double-layer needle-punched felt/three-layer pearl cotton/strong needle-punched felt in January-February and November-December can reduce the annual heat load by up to 19.9%,and deploying the Obscura80 sunshade curtain in April-September can reduce the annual cold load by up to 73.54%.
作者
王宏伟
李昊天
张芸栗
于磊鑫
WANG Hong-wei;LI Hao-tian;ZHANG Yun-li;YU Lei-xin
出处
《节能》
2024年第8期1-5,共5页
Energy Conservation
基金
“十三五”国家重点研发计划(项目编号:2018YFD1100705)。
关键词
温室建筑
能耗分析
保温被
遮阳幕
ENERGYPLUS
greenhouse architecture
energy consumption analysis
insulation cover
sunshade curtain
energyPlus
