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1. high intensity structure., 2.corrosive resistance could insure a long service life., 3.the paper is special cellulose paper. - details see: https://www.machineto.com/7090-evaporative-cooling-pad-for-greenhouse-poultryhouse-gym-10246105

cooling pad operating principle: cooling pad work through an efficient and economic way that is water evaporation . Dry hot air through the water into the room, Due to the water hole walls evenly covered with water film, When the outdoor fresh air through the water, water will absorb heat from the air on the water and evaporation phenomenon so fresh air temperature, humidity increased, through the cooling process, so that the air is cool and moist facility.

Features:

1.special ripper process ,high structure strength,corrosion--proof,and long circle time .

2.water absoption getting wetted pad evenly.

3.Special solid space structure ,providing max,evaporator surface for water and air thermal exchanger.

4.Optional aluminum metal or zinc plank.

5.The material is wood pulp paper,which is irritant and harmless while using .

Water curtain of cooling principle: water curtain and wind machine (exhaust fan)respectively loaded in workshop of both sides wall, exhaust fan makes workshop of air formation negative pressure , forced workshop outside is not saturated of air flows through water curtain more hole moist of surface , caused water evaporation draw large latent heat , to reduce air itself of temperature , in wind machine of role , these was reduce temperature of moist air on continuously of entered workshop . Cooling water and supporting the use of negative pressure fan, has a strong advantage.