Evaporative Cooling Pad — 7090 / 6090 Wet Curtain Walls That Hold Peak Summer Temperatures

Evaporative cooling drops a tunnel house 5–12°C on hot dry afternoons by pulling air through a wetted cellulose wall — the cheapest degrees per dollar in tropical poultry. Our pads are the industry-standard 7090 (150×150×2000 mm-class) and 6090 profiles: cross-fluted kraft-paper core impregnated for water stability, set in galvanized steel frames with top distribution troughs and drain-back sumps.

"7090" and "6090" describe the flute angle/geometry class; the practical difference is cooling depth versus airflow resistance, and which one your house needs is a fan-side calculation. That pairing — pad area to fan count — is why we sell the cooling wall and the exhaust fans as one psychrometric package rather than as accessories.

Key Features

Core built for hot water and hard water

High water-distribution kraft core with binder chemistry chosen for tropical supply water — the pad that crusts and channelizes in month three is the pad that stops cooling and cooks the house quietly.

Cross-flute geometry

Opposing flute angles on the two paper faces hold the air path tortuous for contact time while keeping static penalty inside the fan curve.

Galvanized hydraulic set

Frame, top trough with distribution holes, drain return — mounting interfaces standard on our fan-wall framing.

Pad-to-fan balance as policy

Quoted pad area always reconciles with the fan specification at ~1.5–2 m/s face velocity; mismatch is the most common cooling-wall failure and we refuse to sell into it.

How the Cooling Package Is Engineered

At 6–8 fans of 43,900 m³/h the face velocity through a pad wall settles near the sweet spot where wet-bulb depression is near maximum without blowing dry spots through the media. We calculate wall area, trough sizing and pump duty on the layout drawing; the controller runs pad cycling off temperature and humidity with the fan stages, protecting both birds and the media (a pad soaked overnight without airflow is a pad growing biofilm). In humid-coastal climates the honest answer is sometimes partial-pad plus higher tunnel speed, and the drawing tells you so before import duty is paid on the wrong wall.

Ordering and Consumable Life

Pads ship framed and boxed, 10-unit MOQ for container logic; annual-to-two-year media life is normal with water management we document in the maintenance guide. Replace cores and keep frames; replacement cores are stocked spares on the same account as your fans and controllers — one environment system, one supplier.

Shipping, Payment and After-Sales

We export to customers across Africa, Asia and the Middle East — including Nigeria, Tanzania, Ghana, Uganda, Kenya, Zambia, South Africa, Mozambique, Senegal, Cameroon, Zimbabwe, Malawi, the Philippines, Guyana, Gambia and Equatorial Guinea. Full container loads ship as bulk-packed sets; LCL orders travel in wooden cases.

Why Buyers Choose ZEUSYANG

• Own factory, 15+ years — hot-dip galvanizing, roll-forming and welding lines under one roof in Cangzhou, Hebei. Video factory tours available on request.
• One-stop supply — cages plus feeding, drinking, egg collection, manure removal, ventilation, cooling and environmental control from a single quotation.
• Engineered for longevity — 275 g/m² hot-dip galvanized surfaces rated 15–20 years in house; stainless and aluminum wear parts where corrosion is worst.
• Layout before quotation — send flock size and house dimensions, our engineers return cage layout drawings, equipment lists and FOB prices.
• Delivery you can plan around — about 600 sets in stock, 2 weeks to prepare a full order, 5 days to ship from stock or 20 days after production.
• Installation that works at destination — free drawings and installation videos, online guidance, and engineer dispatch to your farm when needed.