北墙体结构对日光温室内温度场影响的研究

STUDY ON THE INFLUENCE OF THE NORTH WALL STRUCTURE ON THE TEMPERATURE FIELD INSIDE GREENHOUSE

温室北墙是一种具有蓄热和放热功能的农业设施,在北方寒冷地区,温室墙体结构的作用显得更加重要。本文针对3种温室北墙(50cm红砖墙+3cm聚苯板;2温室共用50cm红砖墙,分别面朝南、朝北;38cm红砖墙+75cm炉灰+38cm红砖墙)进行试验研究,通过分析数据得到了温室中温度分布规律:在白天离地面和墙体越远温度越高,在夜间恰好与白天相反。利用Fluent软件对温室内的温度场进行了模拟分析,并且与试验数据进行了对比,验证了CFD在温度场模拟中的适用性和可靠性。

The greenhouse north wall is an agricultural facility with thermal storage and release capability. In the northern cold regions,greenhouse wall structure appears more important. Do experimental study aimed at three greenhouse north walls（ 50 cm of red brick walls ＋ 3cm of polystyrene board; 50 cm red brick walls shared with two greenhouses,face south and north respectively; 38 cm of red brick walls ＋75cm of stove ash＋38cm of red brick walls）. By analyzing the data obtain the regularities of temperature distribution inside greenhouse： During the day the farther away from the ground and the wall,the higher temperature is,but at night it is just the opposite. And use Fluent software to simulate and analyze the temperature field inside greenhouse,then compare them with the experimental data,which is verified the applicability and reliability of CFD in simulation of temperature field.