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一、利用沼气为蔬菜大棚增温和保温日光温室蔬菜生产是在严寒季节进行的,因此,大棚内所种蔬菜对温度的要求较严格。要取得好收益,必须对大棚内温度进行调控。据测定,燃烧1m3沼气可以释放大约23000kJ热量,如:大棚长为30m,宽为7m,平均高为1.5m,其容积315m3,大棚内每100m2面积设置1个沼气灶或者50m2面积设置1个沼气灯。冬季早上棚温最低时(5:00～7:00)点燃,能提高棚温1～
First, the use of biogas for greenhouses warming and insulation Solar greenhouse vegetable production is carried out in the cold season, therefore, the kinds of vegetables in the greenhouse on the temperature of the more stringent requirements. To achieve good returns, the temperature inside the greenhouse must be regulated. It is determined that combustion of 1m3 biogas can release about 23000kJ of heat, such as: shed length of 30m, width of 7m, an average height of 1.5m, the volume of 315m3, the greenhouse per 100m2 area set a biogas stove or 50m2 area set a biogas light. Shedding the lowest temperature in winter morning (5: 00 ~ 7: 00) lit, can increase shed temperature 1 ~