Diffuse reflective glass is a general term for a type of glass with a wide range of uses, especially in architectural applications. Our topic is diffuse reflective glass used in greenhouses.
Diffuse reflective glass greenhouses are also known as diffuse glass or anti-reflective glass.
To understand diffuse reflective glass, we first need to understand the definition of haze: a beam of light deflects after passing through glass. Light within a 2.5° angle is considered direct light, while light outside that angle is considered diffuse light. The ratio of diffuse light to direct light is the haze.
Diffuse light can be understood as haze. The greater the haze, the higher the scattering; the smaller the haze, the lower the scattering.
The relationship between haze and hemispherical transmittance is: the greater the haze, the higher the scattering and the lower the hemispherical transmittance; the lower the haze, the lower the scattering and the higher the hemispherical transmittance.
The higher the hemispherical transmittance of the glass, the more sunlight reaches the greenhouse interior. On average, greenhouse crops receive 1-2 hours more sunlight per day than with other types of glass.
Next is the concept of anti-reflective glass. Generally speaking, anti-reflective glass is a coated version of diffuse glass. Coated diffuse glass not only has different haze levels but also has higher transmittance. Currently, the highest transmittance for anti-reflective glass used in greenhouses is 97.5%.
Garden-specific diffuse reflective glass, also known as diffuse glass and anti-reflective glass, has four common specifications and main parameters:
size, transmittance, thickness, and quantity.
Diffuse glass with a transmittance of 91.5% costs around 40 yuan per square meter (for reference), while coated anti-reflective glass with a transmittance of 97.5% costs around 60 yuan (for reference).
Greenhouse diffuse glass and anti-reflective glass come in two thicknesses: 4mm and 5mm. Generally, 4mm is the preferred thickness. 4mm is more affordable than 5mm and has a 1% higher transmittance.
Therefore, when purchasing diffuse reflective glass (diffusing glass, anti-reflective glass) for your greenhouse, follow these steps:
First, Confirm the Glass Size
Confirming the glass size with the manufacturer in advance will minimize losses and ensure you get the greenhouse glass at the factory price.
Second, Confirm the Glass Thickness
In areas where the temperature is not particularly cold and gas costs are high, you can choose 4mm diffuse reflective glass. For greenhouses with special insulation requirements and good lighting conditions, you can choose 5mm. 4mm is cheaper and has higher light transmittance than 5mm.
Third, Confirm the Transmittance Specification
Diffuse reflective glass has two transmittance specifications: 91.5% and 97.5%. For greenhouses with particularly large planting areas and strict lighting requirements, we can directly choose 97.5% transmittance glass. 97.5% transmittance glass increases yields more effectively than 91.5%, resulting in a higher total yield than 91.5%.
Fourth, confirm the glass haze.
The haze of diffuse reflective glass is a key characteristic of greenhouse glass. Selection should be based on the greenhouse’s construction environment, lighting conditions, and crop preferences. Differences in hemispherical transmittance can significantly impact the crop being grown. Please consult the glass factory’s professional recommendations when selecting diffuse reflective glass.
Summary: Specifications of diffuse reflective glass used in greenhouses
Size: Approximately 900×1000
Thickness: 4mm > 5mm
Transmittance: 97.5% > 91.5%
Haze: Choose from 10, 20, 30, 40, 50, 70, or 75
Hemispherical transmittance: Choose based on the crop being grown
The light transmittance of Yuhua greenhouse glass can be as high as 99%, and there are 8 haze options including 5/10/20/30/40/50/70/75. Yuhua® also supplies glass to greenhouse project companies such as Havecon, Kubo and Van Der Hoeven.
For more information, please contact us at overseas@hnyxlc.com.
