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Wet Pad Cooling System
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- Product Description
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- Commodity name: Wet Pad Cooling System
General Introduction
Wet Pad Cooling System
Wet Pad Cooling System is the most economical and efficient cooling solution for modern greenhouses.
Wet pad cooling systems, also known as evaporative cooling systems or fan-and-pad cooling systems, are the most widely adopted cooling technology for commercial greenhouses in hot and dry climates.
By combining exhaust fans and evaporative cooling pads, this system can reduce incoming air temperatures by 10–15°C (18–27°F), creating an optimal growing environment even during peak summer conditions.
SHG’s Wet Pad Cooling System is engineered for reliability, energy efficiency, and long service life in demanding greenhouse environments. The system consists of three core components: exhaust fans, inlet shutters, and evaporative cooling pads, all working together to provide consistent, cost-effective cooling.
Main Features
Complete Fan-and-Pad Cooling System for Greenhouse Climate Control
01Exhaust Fans – Powerful and Energy-Efficient Ventilation
Whether used in combination with inlet shutters or ventilation openings, our propeller blade exhaust fans provide low-pressure, medium-to-high volume ventilation. Fans are available in single-speed or two-speed configurations, sized specifically for each project based on greenhouse volume and desired air exchange rate.
1.Complete assembly includes housing, guards, louvers, and motors
2.Corrosion-resistant construction suitable for high-humidity greenhouse environments
3.Quiet operation with balanced propeller blades
4.Multiple sizing options to match any greenhouse dimension
02Inlet Shutters – Balanced Air Intake
Placed on the opposing side or gable wall from the exhaust fans, inlet shutters provide the proper opening for complete and uniform air distribution across the entire greenhouse. Without properly sized and positioned shutters, cooling efficiency is significantly reduced.
1.Sized for each project – based on greenhouse area and exhaust fan capacity
2.Motorized operation – each shutter is complete with a motor kit for automatic control
3.Tight sealing – prevents air leakage when closed, maintaining environmental control
4.Durable construction – withstands repeated opening and closing cycles
03Evaporative Cooling Pads – The Heart of the System
Evaporative cooling pads are constructed of cellulose paper with a cross-fluted design. Water flows through the pads, saturating the cellulose material. As hot outside air is drawn through the moist pads by the exhaust fans, the water evaporates, absorbing heat from the air and cooling it before it enters the greenhouse.
Pad Specifications:
1.Material: Specially formulated cellulose paper
2.Thickness: 100mm, 150mm, or 200mm options available
3.Treatment: Impregnated with insoluble anti-rot salts for long service life
4.Design: Cross-fluted for maximum surface area and evaporation efficiency
5.Location: Typically installed on the north gable wall (in Northern Hemisphere)
6.Support structure: Aluminum frame with PVC water distribution pipe and return gutter
04How the Complete System Works
1.Exhaust fans at one end of the greenhouse pull hot air out of the structure
2.This creates negative pressure, drawing fresh outside air through the cooling pads
3.Water flowing through the pads evaporates, cooling the incoming air
4.Cool, moist air travels through the greenhouse, absorbing heat from plants and structure
5.Warm air is exhausted to the outside, completing the cycle
Quality & Service We Provide
1.Custom system design based on your greenhouse size, climate conditions, and crop requirements
2.Component selection and sizing calculations
3.Production with strict quality control
4.Professional installation guidance
5.After-sales technical support and spare parts supply
We can provide detailed installation drawings and airflow calculations to ensure optimal system performance.
Packaging&Delivery
Installation Instruction
Why Choose Us?
Rich Industry Experience
40+ Years of Greenhouse Manufacturing Experience; 20+ Years of Greenhouse Exporting Experience; 10+ Years of OEM/ODM Experience.
Certified Quality Assurance
ISO9001 certified and Construction Qualification certified, ensuring reliable product quality and standardized project execution.
One-Stop Full-Process Service
From site surveys and design planning to production, transportation, installation and commissioning, dedicated staff oversee every stage. Post-installation technical guidance ensures customers can start production smoothly.
Diverse Greenhouse Solutions
From single tunnel greenhouses to multi-span high tunnels, polycarbonate greenhouses and Venlo glass greenhouses, we provide customized solutions for different budgets, climates and planting requirements.
Crop-Oriented Intelligent Design
With early involvement from crop experts, we optimize not only greenhouse structures, but also ventilation, cooling, irrigation and growing systems tailored specifically to your crops and local environment.
Add：No. 50, Lane 100, Jiaqian Road, Nanxiang Town, Jiading District, Shanghai, China
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