COOLING PAD & FAN ALIBABA -www.northhusbandry.cc-

Cooling pad is made of corrugate fiber paper by special chemical treatment,corrosion resistant and long service life. Water evenly covers the surface of paper curtain. Under the negative pressure formed by the opposite ventilator outdoor air gets through the wet sreens, achieving the purpose of cooling . Fine infiltration and water absorption to ensure the same temperature in the house. Our company have several kinds of the materials of the outer frame including aluminium alloy, galvanize board, PVC and galvanized iron in order to meet different requirements of different customers. Besides, customers have different need of the thickness of the cooling pad, so we provide two styles:10cm&15cm with the corresponding frames.

Merits of cooling pad

Water absorbing: cooling pad keeps a good ability of water absorbing and avoids the production of bead on the surface by special formula and technical disposal.
Instant drying: when water stops running, the protecting velum on the surface will dry rapidly. Consequently, microorganism and algae on its surface can be killed.
Without micro hole: algae can be prevented in its inner part and falls off from the surface when drying.

Benefits

High evaporation efficiency

Superb wetting properties

Low pressure drop when wet,leading to lower operating costs

No water carry-over

Low scaling

Self cleaning

Strong and self supporting

Long life time

Low running costs

Quick and easy to install

Environmentally friendly

Consistant high quality

Installation design

the required air volume and the cooling pad area for a greenhouse is calculated as follows:

suppose:the dimension of the greenhouse: 125*40=5000 sq.m

Intensity of solar radiation outside:900 walt/sq.m

Shade rate:50%(intensity of solar radiation inside is 450 walt/sq.m)

Air speed:1.5m/second

Air volume:=5000*225=1,125,000(cubic meter/hour)=312.5(cubic meter/second)

Cooling pad area:312.5÷1.5=208.3(square meter)

That Is to say it need to install at least 208.3 sq.m cooling pad .

Installed along the side wall of the greenhouse a long 125,height 1.8m cooling pad,it’s area is 125*1.8m=225(sq.m).the cooling pad should be Mounted on the side facing the wall of dominant wind direction in summer,while Leeward side of the wall fan installation.

The calculation of cooling pad for poultry house

The following calculation is used for ventilation sheds empirical data

1. for the closed sheds,7—9cubic meter/hour,,Kg live weight Province
2. for the closed sheds:15cubic meter/hour, Kg live weight Province

After the cooling pad to take the following values

The thickness of the wet-curtain100mm:1.0-1.5m/sec/

The thickness of the wet-curtain150mm:1.5-2.0m/sec.

The spefication of the paper,