Warm Winter Greenhouse

1.Product Overview

Warm Winter Greenhouse is a passive energy-saving agricultural facility specially developed for cold areas with long freezing winters.It adopts a unique south-facing single-slope arched layout,equipped with thick multi-layer heat-storage insulated north wall and automatic rolling thermal insulation quilt as core heat-preservation devices.

During daytime,the insulated rear wall fully absorbs solar radiation and stores thermal energy;after sunset,it releases heat slowly to maintain stable indoor growing temperature.Even if outdoor temperature drops to-25℃,the interior can stay above 5℃for normal crop growth without continuous boiler heating,cutting winter energy expenditure by over 90%compared with ordinary multi-span film greenhouses.

The whole frame is made of heavy hot-dip galvanized anti-rust steel pipe,matched with high-transmission anti-fog PO plastic film.Featuring low construction investment,stable thermal performance and simple maintenance,this warm winter greenhouse is widely exported to high-latitude cold regions for off-season vegetable,berry,flower and seedling cultivation.

2.Core Structural Composition

2.1 Reinforced Galvanized Steel Arch Frame

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

Custom standard dimensions:Span 8m/10m/12m/16m;ridge height 3.2–6m;single greenhouse length 50–120m adjustable

Load standard:Reinforced arch design resists heavy snow and strong wind,meets wind load 0.45kN/㎡,snow load 0.45kN/㎡

Optional pillar-free wide-span design:No middle columns inside,convenient for tractors,transplanters and vertical hydroponic racks

2.3 Heat Storage Insulated Rear Wall(Core Warm Winter Feature)

Three-layer composite thermal wall:outer waterproof protective layer+middle foam insulation core+inner heat absorption brick/concrete layer

Block cold north wind and reduce ground heat loss via anti-freeze foundation trench

Store solar heat in daytime,release heat overnight to prevent crop frost damage

Wall thickness customizable according to local minimum winter temperature

2.3 Light-transmitting Cover Film

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

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

Double-layer inflatable film(ultra-cold upgrade):Air interlayer improves heat retention by 30%

2.4 Exclusive Winter Thermal Insulation System

Waterproof composite thermal quilt:Rainproof,snowproof,frost-resistant,block over 80%nighttime heat loss

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

3.Optional Full Climate Control Supporting Systems

All equipment can be separately configured or integrated into PLC intelligent control cabinet:

Ventilation System:Side electric roll-up film vents+top small skylight,adjust humidity and CO₂concentration

Summer Cooling System:Exhaust fan+water cooling pad to avoid high temperature in spring and autumn

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

Auxiliary equipment:Insect-proof net,mobile seedling bed,backup heating stove,temperature/humidity/light sensors

4.Outstanding Advantages of Warm Winter Greenhouse

Ultra-low winter heating cost(core selling point)

Passive solar heat storage structure realizes year-round winter planting with almost no continuous heating equipment,greatly reduce operating expenses for large commercial farms.

Stable anti-frost microclimate

Double heat preservation from thick rear wall and thermal quilt eliminates overnight frost injury to sensitive crops such as strawberry,tomato and leaf vegetables.

Long planting cycle&high economic return

Support winter off-season crops,early spring seedling raising and late autumn delayed harvest,fill market supply gap to get higher sales price.

Low initial investment&easy daily maintenance

Simpler structure than full-automatic multi-span greenhouses;film and thermal quilt replacement is low-cost without complex construction work.

Fully modular customized design

Adjust span,ridge height,wall insulation thickness and supporting systems based on local winter temperature,snow load and planting varieties.