照片示出的太阳灶,是由河南省商邱县教育生产公司研制的一种固定式太阳灶。该灶制作简单,可就地建造。制作时,只要用一块拋物线样板,在预先堆砌好的泥土底座上旋转刮制,即可获得拋物曲面。然后,再用细沙白灰或水泥抹面。养护后,在曲面上铺设反射镜,就可将太阳能会聚于锅底。由于固定式太阳灶不能跟踪太阳,随着太阳的东升西落,焦斑位置会不断发生变化,所以使用时间较短。为了延长使用时间,可以采用活动支架,让锅具随焦斑移动。这种固定式太阳灶的采光面积为4.5米~2,功率可达2360瓦。 Photo shows the solar cooker, Shangqiu County, Henan Province, by the education and production company developed a fixed solar cookers. The stove made simple, can be built on the spot. Production, as long as the use of a parabolic model, in the pre-piled soil base rotation scraping, you can get a parabolic surface. Then, use fine sand ash or cement plaster. After curing, laying the mirror on the surface, the solar energy can be gathered in the bottom of the pot. As fixed solar cookers can not track the sun, as the sun rises and falls, the focal spot position will continue to change, so the use of time is shorter. In order to extend the use of time, you can use the activities of the stent, so that pot with focal spot move. This fixed solar stove lighting area of ​​4.5 meters to 2, the power up to 2360 watts.