There are many kinds of greenhouse, such as glass greenhouse, plastic greenhouse; Single greenhouse, linked greenhouse; Single roof greenhouse, double roof greenhouse; Warming greenhouse, unwarming greenhouse, etc. Modern greenhouse with computer control of temperature, humidity, light and so on, and then create the environmental conditions for plants.
One, performance indicators
1. Light transmittance: the light transmittance of greenhouse becomes a direct factor affecting the growth of crops and the selection of planting crop varieties. Generally, the light transmittance of connected plastic greenhouse is ~60%, that of glass greenhouse is 60%~70%, and that of solar greenhouse can reach more than 70%.
2. Thermal insulation: to improve the thermal insulation performance of greenhouse and reduce energy consumption is a direct means to improve greenhouse production efficiency. The larger the heat preservation ratio, the better the heat preservation performance of the greenhouse.
3, durability: greenhouse construction must consider its durability. The durability of greenhouse is influenced by the aging resistance of greenhouse materials and the bearing capacity of the main structure of greenhouse.
Two, greenhouse classification
(I) terraced solar greenhouse (standard type)
Parameters: span 12 meters *3 block, ridge height: 4.5 meters, length: 76 meters.
Performance index: anti-wind load: 0.30kn /㎡, anti-snow load: 0.30kn /㎡, constant load of the shed: 10Kg/㎡, hanging load: 10Kg/㎡, the life of the shed is 15 years.
Scope of construction: width 8~12 meters, height 3.2~4.5 meters, length up to 100m, number of connected buildings, customer's own.
Scope of application: cherry, winter date, nectarine and other fruit trees, flowers planting, vegetable planting.
(2) single solar greenhouse (standard type)
Parameters: span 10 meters, ridge height: 3.6 meters, length 76 meters.
Performance index: anti-wind load: 0.30kn /㎡, anti-snow load: 0.30kn /㎡, constant load of the shed: 10Kg/㎡, hanging load: 10Kg/㎡, the life of the shed is 15 years.
Construction scope: width 8~12 meters, height 3.2~4.5 meters, length within 100m.
Applicable scope: strawberry, vegetable planting, flower planting, edible fungus planting.
(3) single solar greenhouse (standard type)
Parameters: span 10 meters, ridge height: 3.6 meters, length 76 meters.
Performance index: wind resistance load: 0.30kn /㎡, snow resistance load: 0.30kn /㎡,
Ceiling constant load: 10Kg/㎡, hanging load: 10Kg/㎡, ceiling life 15 years.
Construction scope: width 8~12 meters, height 3.2~4.5 meters, length within 100m.
Applicable scope: strawberry, vegetable planting, flower planting, edible fungus planting.
(4) wall solar greenhouse
Parameters: span 10 meters, ridge height: 4.5 meters, length 25 meters.
Performance index: anti-wind load: 0.35kn /㎡, anti-snow load: 0.30kn /㎡, constant load of the shed: 10Kg/㎡, hanging load: 15Kg/㎡, life of the shed: 15 years.
Scope of contract: width 8~10 meters, height 3.2~4.5 meters, length within 100m.
Scope of application: seedling, strawberry, vegetable, edible fungus planting.
Wall material: adobe, brick masonry.
(v) glass intelligent linkage greenhouse
Span: 6.4 meters, 8.0 meters, 9.6 meters, 12 meters
Column spacing: 4.0 m, 4.5 m, 5.0 m
Basic wind pressure: 0.5KN/㎡
Basic snow pressure: 0.3KN/㎡
Scope of application: flower planting, seedling breeding, sightseeing display, scientific research display.