Horticulture Diffused Glass Supports Commercial Greenhouse Projects
Energy-Efficient Greenhouse Glass
Diffuse glass in modern commercial greenhouses is engineered as a multifunctional thermal and optical system. Energy costs - primarily for heating in temperate climates and for cooling and screening in warmer regions - represent the single largest variable operating expenditure in protected horticulture.
|
Product Name |
Horticulture Diffused Glass |
|
Glass Type |
Matt-matt Glass, Nashiji Glass, Prismatic-matt Glass |
|
Light Transmittance |
89% |
|
Glass Processing |
Hole Drilling, Silk-screen Printing, AR Coating |
|
Certification |
EN12150, EN12600, CCC, SGS, SPF |
Optical & Thermal Performance Comparison: Clear Glass vs Diffuse Glass
| OPTICAL PERFORMANCE | |||
| Total PAR transmission (400–700 nm) | 88–91% | 93–96% | +5–6 pp |
| Haze factor | < 5% | 70–85% | +65–80 pp |
| Surface reflectance (PAR) | ~8% | < 2% | -6 pp |
| Solar g-value (SHGC) | 0.82–0.87 | 0.60–0.75 | Tunable |
| UV transmission (280–380 nm) | ~1–3% | ~1–4% | Similar |
| NIR transmission (700–2500 nm) | ~85% | 55–70% (selective) | Reduced |
| THERMAL PERFORMANCE | |||
| Thermal U-value (W·m⁻²·K⁻¹) | 5.6–5.8 | 3.0–3.5 (with Low-E) | -38% |
| Thermal emissivity (ε) | 0.84 | 0.04–0.15 (Low-E) | -83–95% |
| Heating energy reduction | - | 20–35% | Significant |
The Optical Coating Stack for Diffused Glass
Anti-reflective (AR) coating
Standard soda-lime glass reflects approximately 8% of incident radiation at each air-glass interface (Fresnel reflection). Anti-reflective coatings - typically porous silica or multi-layer interference coatings - reduce surface reflectance to below 1%, recovering this energy into the transmission budget. Combined with the diffuse scattering surface, total PAR transmission in high-specification products can exceed 95%, compared to 88–91% for uncoated clear glass.
Energy Balance in the Greenhouse System
The energy performance of a glazed greenhouse is governed by the dynamic balance between solar heat gain, internal heat generation, transmission losses, infiltration, and active heating/cooling loads.
Hot Tags: Horticulture Diffused Glass, China Horticulture Diffused Glass manufacturers, suppliers, factory, Diffuse Glass For Greenhouse, Greenhouse Diffuse Glass, Greenhouse Glass High Haze, Greenhouse Glass Low Haze, Middle iron Horticulture Glass, Transparent Greenhouse Glass
