Solar Greenhouse Quality Inspection And The Back Wall Insulation Analysis Which Based On Infrared Thermal Imaging Technology

Solar greenhouse back wall is an important source of greenhouse heat at night,in order to increase temperature, there are some phenomena such as thicken wall or add insulation facilities blindly,this not only increase investment, but also reduce the utilization of land,so the research of back wall is particularly important.In this paper,we tested three same structure solar greenhouses which with soil wall,heterogeneous composite wall and elemental solid heating wall in Hohhot using rapid, sensitive,non-contact infrared camera in the winter coldest month from December 2015 to January 2016.To detect greenhouses’ heat conduction defects and compare the insulation properties of these three kinds of solar greenhouse back wall.Measurement and analysis display that heterogeneous composite wall’s temperature is significantly higher, and soil wall’s temperature and elemental solid wall’s temperature is relatively warm,and the latter is higher.Illustrate that heterogeneous composite wall insulation performance is superior to elemental solid heating wall,the elemental solid wall insulation performance is poor.Point out that the temperature of back wall upper half part is less than the lower half part about soil wall and heterogeneous composite wall greenhouse;The temperature of intermediate is higher than both sides of back wall.In the direction of the greenhouse span, ground temperature is influenced by the back wall temperature greatly,The rearmost (near the back wall)has the highest temperature,and from the front to the rear,the temperature is gradually higher.Illustrate that infrared detection technology could detect the quality of solar greenhouse and wall insulation properties quickly and accurately.The results have certain guiding significance and practical value to solar greenhouse structure optimization and application in Hohhot.