If we want to know what type of glass is used in our glass greenhouse, we must understand what kind of environment our greenhouse is in, what kind of environment our crops are in, and what we want this greenhouse to do.
What kind of environment is our greenhouse under
For example, our greenhouse is in Guangxi, so what we have to consider is typhoon, heavy rainfall, hail, the coastal area has sufficient sunshine, strong sunshine in summer and warm in winter. Then we know that we need a greenhouse glass that can resist typhoons, hail, and strong ultraviolet rays. What we don’t need to consider is excessive heat preservation.
There are several types of glass we can choose under this condition: ultra-white tempered float glass, ultra-white rolled tempered glass, and ordinary tempered float glass.
Let me talk about why they are all tempered glass. Greenhouses are generally 5-7 meters in height. After the spontaneous explosion of tempered glass, the particles are small and round, even if they fall, they will not hurt people. It can not only ensure the safety of people but also the safety of crops. .
Namely: ultra-white rolled tempered glass> ultra-white float tempered glass> ordinary float tempered glass
What is the environment of our crops
Speaking of what kind of environment our crops are in, this consideration is the overall environmental problem of the region. In some areas, the temperature has not been high, and some areas have always been high, and there are also large temperature differences.
The crops grown in the greenhouse may be local or not, so the control of light becomes the most important issue. How to control the light is a word: haze.
Haze is a very uncommon concept. Both he and Hortiscatter are the new concept standards for the light transmittance of greenhouse glass: Reference --- What is the haze of greenhouse diffused glass
Haze is a very important greenhouse selection parameter in extreme weather areas, which can effectively suppress the hemispheric light transmittance to assist the growth of crops.
What do we want this greenhouse
The basic greenhouse operation is mainly profit, and the idea is to try to increase the output of the greenhouse. How to increase planting yield on the glass of smart greenhouse. Three points: light transmission, light selection, and coverage.
What is light transmittance, the light transmittance of glass. One share of sunlight is harvested. The higher the light transmittance of glass, the closer it is to the light demand of open-air growth. It goes against nature and is close to nature. The greenhouse discharges unfavorable factors rather than favorable factors.
What is the light selectivity? The light selectivity is the screening ability of the light spectrum of the glass. What is needed for plant growth is blue-violet light. Other infrared light is not needed for growth. While improving the light transmittance, it is also necessary to improve the light selectivity. of.
What is the coverage? The reason why the greenhouse is currently designed to be 7 meters high is to cater to the needs of vertical crop growth in the greenhouse. Under the influence of the 4 meters high leafy crops, it is difficult for the roots of the crops to get sunlight, and it is very difficult to get sunlight for a long time. Content of gray mold, rot plant roots. The mulching property of the glass allows light to reach the roots of plants and inhibits the growth of gray mold.
What are the three points of glass that are suitable for light transmission, light selection, and covering?
Ultra-white rolled scattering tempered glass, ultra-white rolled anti-reflective tempered glass, ordinary diffuse scattering tempered glass, ordinary anti-reflective tempered glassmeans: ultra-white rolled anti-reflective tempered glass> ultra-white rolled scattering tempered glass> ordinary anti-reflective tempered glass> ordinary diffuse scattering tempered glass
Tell me why anti-reflection is better than scattering. Because anti-reflection is coated glass, the light transmittance of coated glass is higher than that of uncoated glass, and the light transmittance of ultra-white is higher than ordinary glass;
