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在塑料大棚的土壤中设置电热装置可以获得很高的热效事(60%～75%),而采用油炉加热空气的采暖系统,其热量利用率不超过13%。因此设置电热装置,不仅能比油炉节省加热周期,而且还能达到大大减少热能消耗的目的。给塑料大棚土壤加温的电热装置,最常用的是ПОХВ和ПОСП型专用电线。
In the plastic greenhouse soil heating devices can be set very high thermal efficiency (60% to 75%), while the use of oil-fired heating air heating system, the heat utilization rate does not exceed 13%. Therefore, setting the electric heating device can not only save the heating cycle than the oil burner, but also achieve the purpose of greatly reducing the heat consumption. The electric heating device that heats the plastic greenhouse soil is the most commonly used special wire for ПОХВ and ПОСП.