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Fan & Pad Cooling System Polyhouse (As per NHB Guidelines)
A Fan & Pad Polyhouse is a climate-controlled greenhouse equipped with an evaporative cooling system that uses exhaust fans and wet cellulose pads to maintain the desired temperature and humidity. This high-tech system creates optimal conditions for high-value crops that require precise environmental control.
As per NHB (National Horticulture Board) guidelines, such polyhouses are supported under protected cultivation schemes for horticulture crops to promote quality, productivity, and income for farmers and entrepreneurs.
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Product Description:
A Fan & Pad Polyhouse is a climate-controlled greenhouse equipped with an evaporative cooling system that uses exhaust fans and wet cellulose pads to maintain the desired temperature and humidity. This high-tech system creates optimal conditions for high-value crops that require precise environmental control.
As per NHB (National Horticulture Board) guidelines, such polyhouses are supported under protected cultivation schemes for horticulture crops to promote quality, productivity, and income for farmers and entrepreneurs.
Key Features:
š Cooling System: Evaporative cooling using cellulose cooling pads and exhaust fans.
š Automatic Climate Control: Thermostats and sensors to manage temperature and humidity.
šļø Sturdy GI Frame: Galvanized iron structure with rust-resistant coating.
š UV-Stabilized Film: 200-micron, multilayer polyethylene film for UV protection and durability.
š§ Drip Irrigation & Foggers: Efficient watering system with misting for humidity control.
š§± Insulated Sidewalls (Optional): For high-temperature zones.
š Electrical Setup: Includes fans, motors, controller panels, and backup systems.
Advantages:
ā Precise Environment Control: Maintains ideal temperature (18Ā°Cā30Ā°C) and humidity (60%ā80%).
ā Year-Round Cultivation: Suitable for crops sensitive to heat and moisture stress.
ā Increased Yield & Quality: Promotes better flowering, fruit setting, and size.
ā Reduced Pest/Disease Incidence: Maintains a clean and controlled internal environment.
ā Efficient Cooling: Reduces heat stress even in hot regions like Rajasthan, Telangana, and Tamil Nadu.
ā Government Subsidy Eligible: Recognized and subsidized under NHB & MIDH schemes.
Applications:
š¹ Floriculture: Gerbera, Rose, Anthurium, Carnation, Lilium
š Fruit Crops: Strawberry, Dragon Fruit (in nursery stage)
š„¬ Vegetables: Capsicum, Cucumber, Lettuce, Leafy Greens
š± Nurseries: Tissue culture hardening, seedling raising
šæ Medicinal & Aromatic Crops: High-value herbs under controlled growth
Specifications (As per NHB Guidelines):
| Component | Specification |
|---|---|
| Structure | Galvanized Iron (GI) structure, rust-proof, wind-resistant |
| Covering Film | 200-micron, UV-stabilized polyethylene film |
| Cooling Pads | Cellulose pads (thickness 100ā150 mm), framed with aluminum/SS |
| Exhaust Fans | Motorized fans (typically 36″ to 48″), corrosion-resistant |
| Ventilation Type | Forced ventilation via fan & pad |
| Temperature Control | Thermostat-controlled or sensor-based automation |
| Irrigation System | Drip with foggers/misters |
| Height of Structure | Gutter: 4.0ā4.5 m, Center: 5.5ā6.0 m |
| Wind Load Capacity | Up to 120 km/h (depends on region) |
| Subsidy Eligibility | Yes, under NHB/MIDH schemes ā Up to 50% (Varies by state & beneficiary type) |
| Electric Power Requirement | 3-phase connection, inverter backup recommended |