水介质节能日光温室蓄放热性能试验  

Heat Storage and Release Performance of Water Medium Energy-Saving Solar Greenhouse

作　　者：李一明 李永玺 岳湘 刘兴安 李天来[2,3] LI Yi-ming;LI Yong-xi;YUE Xiang;LIU Xing-an;LI Tian-lai(College of Engineering,Shenyang Agricultural University,Shenyang 110161,China;College of Horticulture,Shenyang Agricultural University,Shenyang 110161,China;National&Local Joint Engineering Research Center of Northern Horticultural Facilities Design&Application Technology,Shenyang Agricultural University,Shenyang 110161,China)

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]沈阳农业大学园艺学院,沈阳110161 [3]沈阳农业大学北方园艺设施设计与应用技术国家地方联合工程研究中心,沈阳110161

出　　处：《沈阳农业大学学报》2021年第3期306-313,共8页Journal of Shenyang Agricultural University

基　　金：国家重点研发计划项目(2019YFD1001902)。

摘　　要：为了突破传统日光温室蓄放热瓶颈问题,探明水介质蓄放热系统对提高温室内部环境温度的能力,设计了太阳能集热板、循环水管和集热水箱3种水介质蓄放热系统,在同一日光温室内建立5个工况相同的保温箱体,将水介质系统与传统砖墙和空苯板箱进行对比,分析以水作为蓄放热介质的热特性。通过分析典型晴天和典型阴天两种不同条件下的气温、水温、蓄热量和放热量动态监测数据,研究了不同系统的蓄放热特性及其对温室内部热环境的影响。结果表明:集热水箱系统的蓄放热性能与传统砖墙相比提升不大,但装备有水循环的太阳能集热板系统和循环水管系统提升显著,其中效果最好的太阳能集热板系统可以使水温提高12.12℃(晴天)、11.14℃(阴天),使气温提高3.68℃(晴天)、1.68℃(阴天),使蓄热量提高3.70MJ(晴天)、2.76MJ(阴天),使放热量提高3.00MJ(晴天)、2.15MJ(阴天),整个试验期间的日均蓄热量和放热量分别可以提升3.03MJ和2.34MJ。水介质蓄放热系统建造成本低,运行效果好,可以显著改善温室内部作物生长环境,以水作为蓄放热介质具备替代传统砖墙的巨大潜力,研究结果可以为温室设施蓄放热系统开发和结构改造提供重要理论依据。In order to break through the bottleneck of heat storage and heat release in traditional greenhouses,and to explore the ability of water medium system to improve the internal temperature environment,the present experiment has designed three water systems(i.e.solar panel,water pipe and water tank)and compared their thermal performances with traditional brick wall as well as empty box.By analyzing the dynamic monitoring data(i.e.air temperature,water temperature,heat storage and heat release)of five same heat preservation boxes under uniform sunny and cloudy days,the thermodynamic characteristics of different heat storage-release systems and their effects on the internal thermal environment were investigated.The results showed that the water tank system was not much improved compared with traditional brick wall.Nevertheless,the solar panel system and the water pipe system have significantly improved heat storage-release performance.Among them,the solar panel system could increase water temperature by 12.12℃(in sunny day)and 11.14℃(in cloudy day),increase air temperature by 3.68℃(in sunny day)and 1.68℃(in cloudy day),increase heat storage by 3.70MJ(in sunny day)and 2.76MJ(in cloudy day),increase heat release by 3.00MJ(in sunny day)and 2.15MJ(in cloudy day),respectively.Moreover,the average daily heat storage and heat release during the experimental period have been improved by 3.03MJ and 2.34MJ,respectively.The water medium heat storage and release system has low construction cost and good operation efficiency,which can significantly improve the growth environment of crops.In conclusion,the water medium has great potential to replace traditional brick wall.The obtained results can provide an important theoretical basis for greenhouse design of the heat storage-release system.

关 键 词：日光温室 蓄放热 水蓄热 太阳能利用 

分 类 号：S625.5[农业科学—园艺学]