温室地下蓄热系统蓄热和加温性能  

Study on the Heat Storing and Heating Performances of an Underground Heat Storage System in Greenhouse

作　　者：王永维[1] 苗香雯[1] 崔绍荣[1] 梁喜凤[1] 

机构地区：[1]浙江大学生物系统工程与食品科学学院

出　　处：《农业机械学报》2005年第1期75-78,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目 (项目编号 :5 0 175 10 1)

摘　　要：针对温室地下蓄热系统热量损失大、系统运行效率低的缺点 ,设计了一种新型温室地下蓄热系统 ,测试了蓄热与加温时进出口空气温度、湿度、换热管道出口处流速、土壤温度。试验结果表明 ,系统蓄热与加温时空气流经换热管道温度、焓值变化明显 ,平均蓄热热流密度为 2 3～ 81W/ m2 ,平均加温热流密度为 82～ 96 W/ m2 ,能够明显提高苗床温度 ,蓄热量与加温热量均是系统消耗电能的 10倍以上 。A new underground heat storage system in greenhouse was designed, which overcomes many drawbacks of the existing underground heat storage system, such as the high heat loss and the low-level efficiency, etc. At the same time, some parameters were measured during heat storage and heating in the experiment, including air temperature, air humidity in the inlet and outlet, air flow velocity in the outlet of heat exchanging pipes and the soil temperature. It was indicated that the differences of the air temperature and the enthalpy between the inlet and outlet are distinct when air flows through heat exchanging pipes, the heat flux during heat storage and during heating were 23-81 W/m2 and 82-96 W/m2 respectively, and the seedling bed temperature could be increased greatly. Moreover, both the heat saved and released for heating were 10 times greater than the electric energy consumption of the system, and the effect of energy saving was significant.

关 键 词：温室 加温 地下蓄热 苗床温度 土壤温度 湿度 空气温度 温热 热量损失 试验结果 

分 类 号：S625.51[农业科学—园艺学]