Sunlight Greenhouse / Solar Greenhouse

1.Product Overview

Sunlight Greenhouse,also named Solar Greenhouse,is a unique passive solar agricultural facility originated in northern China,specially designed for year-round crop cultivation in cold temperate&frigid zonespolytunnel....

It adopts a one-side slope layout:thick heat-storage insulated north wall on the back,arched light-transmitting PO/PE film roof facing full southward sunlight,matched with automatic rolling thermal insulation quilt as core heat-preservation equipment.

Relying on solar radiation for heating during daytime and storing heat in rear wall,it can keep suitable growing temperature above 5℃at night in cold winter without heavy auxiliary heating,cutting heating cost over 90%compared with ordinary multi-span greenhousespolytunnel....

The whole frame uses hot-dip galvanized anti-rust steel pipes,low construction cost,simple maintenance,widely applied for off-season vegetables,berries,flowers and seedling breeding globally.

2.Core Structural Composition

2.1 Galvanized Steel Frame

Material:Hot-dip galvanized oval/round steel pipe,passivation anti-corrosion,service life≥15 years

Custom standard sizes:Span 8m/10m/12m/16m;ridge height 3.2–6m;length 50–120m customizable

No middle pillar wide-span design optional,convenient for tractor&mechanical operation

Reinforced arch structure,bear heavy snow load&strong wind for northern cold areas

2.2 Insulated North Rear Wall(Defining Feature)

Three-layer composite heat storage wall:outer protective layer+middle thermal insulation foam+inner heat absorption layer(brick,concrete or compacted soil)

Function:Absorb solar heat by day,release heat slowly at night,block cold north wind drasticallyAlibaba.co....

2.3 Light-transmitting Roof Film

PO Film(Premium):Light transmittance≥90%,long anti-fog anti-drip,UV anti-aging,service life 3–5 years

PE Film(Economical):Transmittance 83%–88%,service life 2–3 years

Single-layer film standard;double-layer inflatable film for ultra-cold areas to boost heat retention.

2.4 Core Thermal Insulation System(Unique to Solar Greenhouse)

Composite waterproof thermal quilt:Rainproof,snowproof,frost-resistant,block heat loss at night

Electric roller motor:Automatic roll up/down quilt,save manual labor,support timing intelligent control

3.Optional Supporting Automatic Systems

All equipment can be separately equipped or connected to PLC intelligent control cabinet:

Ventilation System:Side manual/electric film rolling vent+top small skylight,adjust humidity&CO₂

Cooling System:Exhaust fan+cooling pad for high-temperature spring&autumn

Irrigation System:Drip irrigation,sprinkler irrigation,water&fertilizer integrated machine

Auxiliary options:Insect-proof net,seedling bed,heating stove,environmental temperature/humidity sensor

4.Outstanding Advantages

Ultra-low winter energy consumption(core competitiveness)

Passive solar heat storage design;most cold regions can realize winter planting without continuous fuel/electric heating,save massive operating costpolytunnel....

Stable internal night temperature

Insulated wall+thermal quilt double heat preservation,avoid frost damage to crops in freezing nights.

Low initial investment&easy maintenance

Simpler structure than multi-span greenhouses,film&quilt replacement low-cost,no complex civil engineering.

Customized flexible layout

Span,height,wall thickness and supporting equipment adjustable according to local latitude,snow load and crop types.

Wide planting compatibility

Suitable for all off-season high-value cash crops,easy to match soilless hydroponic racks.