目前,我国广大农村正在推广沼气,农民十分欢迎。为了提高沼气池温度,增加产气量,我们作了利用太阳能提高沼气产量的试验,取得了一定的效果。其装置如图1所示,它由通常的沼气池和平板型太阳能集热器组成。沼气池体积3.52米~3,发酵物体积2.5米~3。集热器长2.8米,宽1.8米,透明玻璃倾角45度,在溢出液层厚0.1—0.15米时,体积为0.5—0.7米~3。它的工作原理是:沼气发酵过程中,不断产生沼气,使池内压力增大,由于出料间是封闭的,压出的 At present, China’s vast rural areas are promoting biogas, farmers are very welcome. In order to raise the temperature of biogas digesters and increase the gas production, we have made some experiments using solar energy to increase biogas production, and achieved some results. The device shown in Figure 1, which consists of the usual digesters and flat-panel solar collectors. Digester volume of 3.52 m ~ 3, fermentation volume 2.5 m ~ 3. Collector 2.8 meters long, 1.8 meters wide, transparent glass angle of 45 degrees in the overflow liquid layer thickness of 0.1-0.15 m, the volume of 0.5-0.7 m ~ 3. Its working principle is: biogas fermentation process, continue to produce biogas, so that the pressure in the pool increases, because the discharge room is closed, out of the