The glass greenhouse is composed of many components, so that the temperature inside the greenhouse can be freely adjusted, and the growth of crops is more comfortable. Among them, glass is the main source of light transmission in the greenhouse. There are only two types of glass greenhouses, one side wall glass, and one ceiling glass.
Greenhouse has two kinds of glass, ordinary float glass, and diffuse reflection glass (anti-reflection glass, scattering glass). The float glass is mainly covered in the side wall of the greenhouse, which plays the role of sealing the greenhouse and heat preservation; Diffuse reflection glass is mainly covered on the top of the greenhouse, which is the main source of light transmittance of the greenhouse, and plays the role of increasing reflection and increasing production.
The difference between greenhouse float glass and diffuse reflection glass can be understood as follows
The first point: transmittance
The transmittance of ordinary float glass is about 86%, the transmittance of diffuse reflection glass is 91.5%, and the highest transmittance after coating is 97.5%.
Second point: tempering
Because the float glass is mainly installed in the side wall, it does not need to be tempered and belongs to ordinary glass. Diffuse reflection glass is installed on the top of the greenhouse, the height of the greenhouse is generally 5-7 meters, so tempered glass must be used.
Third point: fog
Fog is the key to ensuring light transmission and scattering. The side wall float glass of the greenhouse is free of fog. The diffuse reflection glass on the top of the greenhouse has 8 fog degrees to provide a choice, which are: 5, 10, 20, 30, 40, 50, 70, 75.
Fourth point: coating
The ordinary float glass in the greenhouse does not need to be coated, and the light transmittance required by the side wall is not high. Diffuse reflection glass, as the main source of light transmittance in the greenhouse, is crucial to crop growth, so diffuse reflection glass is coated glass.
Fifth: Pattern
Ordinary float glass belongs to flat glass, diffuse reflection glass belongs to embossed glass, and the general pattern is fragrant pear flower. The pattern of diffuse reflection glass is pressed out by a special roller and has different fog characteristics.
The above is the difference between float glass and diffuse reflection glass, then when we purchase greenhouse glass, we need to pay attention to and understand what data:
First: transparent glass
The light transmittance of the top glass of the greenhouse must be more than 90%, otherwise the greenhouse grass is not long (there are examples and lessons). At present, the diffuse reflection glass is divided into two kinds, a 91.5% light transmittance scattering glass, a coating 97.5% anti-reflection glass;
Second: Thickness
The thickness of diffuse reflection glass is mainly selected between 4mm and 5mm, generally 4mm, the transmittance of 4mm diffuse reflection glass is about 1% higher than that of 5mm;
Third: fog
According to different lighting conditions, we can choose one of 8 fog degrees 5, 10, 20, 30, 40, 50, 70, 75, and different fog degrees can be more suitable for greenhouse planting.
Fourth: Size
Greenhouse diffuse reflection glass are custom product, so the glass is made to exist deficit pieces, to ensure that the high cutting rate can reduce a large number of costs.
To conclude:
1. Ordinary float glass is used in the side wall of the greenhouse, diffuse reflection glass is used at the top of the greenhouse;
2. The light transmittance of ordinary float glass is 86%-88%. Diffuse reflection glass is divided into 91.5% scattering glass and 97.5% antireflection glass.
3. The ordinary float is non-tempered, diffuse reflection glass is tempered glass
4. Ordinary float glass is not embossed, diffuse reflection glass is embossed glass
If you want to discuss further details, feel free to contact us anytime!
Email: info@cfgreenhouse.com
Phone: 0086 13550100793
Post time: Jan-17-2024
