Effect of Chemical Fiber Heat Preservation Quilt of Different Thickness on Insulating Ability of Solar Greenhouse

This text has studied the effects of chemical fiber heat preservation quilt of different thickness on insulating ability in solar greenhouse.The air temperature of 30 cm higher above the ground and the soil temperature of 10 cm under ground in the simulation of greenhouse was analyzed.The temperature was measured at 0:00,8:00,12:00 and 16:00 in a day.The result showed that,in simulation of greenhouse,under continuous sunny days or continuous cloudy days,different thickness of heat preservation quilt per area had more effects on temperature of 30 cm higher above the ground and temperature of 10 cm under ground between 0:00 and 8:00.With the increase of the thickness,the effect became better.But the air temperature had no significant difference at 12:00 and 16:00.No matter sunny or cloudy days after being damp by the rain,the different thickness of heat preservation quilt had no effect on insulating ability.Chemical fiber insulation quilt of 2.25～2.40 kg/m2 thickness is an ideal choice for cost saving and efficiency improving,for it can increase the temperature at 30 cm high and also the ground temperature at 10 cm high.