Key points
1. Points to note: 1 The solar cooker has a large space and the location should be reasonable. It should be placed in the open, sheltered, and flat place of the north wall of the house. The base should be grounded firmly and securely. 2 Avoid the surrounding tall buildings and trees, poles and other places that can block the shade. 3 Do not place where people and livestock machinery are constantly active and easily hinder other activities. 4 Do not place near grass, trees, and other flammable objects. 5 Do not put in a damp place.
method
2. Usage: 1 The bottom of the cooker using the solar cooker should be black. The new cooker should use black wood and black smoke to reduce the transmission of light, increase the reflected light wave and improve the thermal efficiency. 2 The installation should be reasonable, and the rotation should be flexible according to the distance from the point on the parabola to the focus and the guide line. According to the specific design specifications and requirements, it can be installed and used to achieve good results. 3 When using the solar cooker, it should be adjusted according to the season and time. As the sun rises from east to west and the sun moves westward, the solar cooker also has to track the sun from east to west, constantly adjusting the orientation and height, and adjusting the focal length manually. First adjust the orientation, grasp the upper edge of the cooker by hand and push it to the left and right, so that the cooktop is facing the sun; secondly adjust the height, grasp the upper edge of the stove with your left hand, press the upper and lower movements, and adjust the adjustment rod with the right hand (rotating screw) Look at the focus of the cooker on the bottom of the pot. Adjust the cooktop on time and keep the focus on the bottom of the cooktop. 4 If you want to improve its heat utilization rate and reduce heat loss, it is best to make a heat-insulating sleeve that can be placed on the pot ring without bottom insulation and shelter from the wind. The weight should not exceed 2 kg. Rural areas can generally be taken locally, using a bottomless scrap iron box (basin). The thermal insulation sleeve can be composed of two parts, namely the thermal insulation ring and the thermal insulation cap. The holding ring can be made of a cylinder made of light heat insulating material. Insulation materials must be resistant to high temperatures (above 800 ° C) to prevent burnout or fire. The heat-insulating cap is placed on the upper part of the pan, and can generally be sewn with cotton cloth. 5 The pot lid on the solar cooker should be tight and airtight.
Maintenance
1, stove surface: 1 The most important part of the concentrating stove is the stove surface, which directly affects its thermal efficiency, life and cost. Pay attention to the protection of the surface of the aluminized film to extend the life of the reflective material. 2 When using the stove surface, such as dust, water droplets, mud, grass, etc., use soft things or cotton cloth to lightly rub the surface, and never use hard objects or corrosive chemicals to scrub, so as to prevent the reflective material from reacting. 3 to prevent people from tearing off the surface of reflective materials or stones and other objects to touch the lens. 4 The cooker ring and bracket load of the stove should not exceed 10 kg. 5 In case of wind, the stove should be placed in the leeward. If necessary, the base should be pressed with heavy objects to strengthen the supporting device to prevent the stove (body) from being tilted, tipped over and damaged by the wind. 6 After each use of the stove, the stove must be facing away from the sun (rain surface). When leaving home, fix the stove and put it in a safe place. When not in use for a long time, it is necessary to maintain the rotation and various parts in case of inflexibility or rust during use, and if necessary, spray anti-rust paint. 7 cooktop reflective film or other parts generally need to be replaced after several years of use. It is also possible to correct the overall condition of the maintenance according to the relevant design data and performance parameters, maintain its original effect, and continue to use.
2, the stove body: 1 to prevent heavy rain, hail breaking the reflective surface and rain into the lens gap to shorten the lens life. On rainy days, use a plastic film or shed to cover the stove. 2 It is strictly forbidden to collide the stove and the object to avoid damage to the stove. 3 Keep the cooker flexible, that is, it can be operated horizontally, and it can be adjusted vertically, and the rotation is stable.
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