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Cooling Pad

Solutions: Systems and Equipment.

The cooling pad is designed to reduce the temperature and to increase the relative humidity (RH) inside the greenhouse in hot and dry conditions. The system is comprised of:

  • The Pad: Tightly packed, beehive-shaped cardboard panels.
  • Water System:  a water tank and a buoy, a pump, water trough on top of the pad, drippers, water trough in the bottom of the pad to collect the water.
  • Exhaust fans, installed along the opposite wall.

Agro-technical limitations:

  • The maximum distance between fronts, (the front side with the pad and the opposite side with the fans), is 40 meters.
  • The greenhouse must be hermetically sealed during operation of the humidity pad. The fans serve as the sole route for the expulsion of air and the pad itself serves as the sole route for the entrance of fresh air into the greenhouse.
  • As the percentage of relative humidity decreases (the dryer the air), the cooling efficiency of the humidity pad increases.

The Cooling Method:

  • The exhaust fans suck out the air from within the greenhouse and fresh air is drawn into the structure’s open space, while the pad itself serves as the sole route for the entrance of fresh air into the greenhouse.  Since the humid pad is wet, the air that enters the greenhouse through the pad absorbs the moisture and quickly cools.

Tips for ensuring the successful operation of the humid pad:

  • A maximum distance of 40 meters between fronts.
  • A hermetically sealed greenhouse during operation of the pad.
  • The correct dimensions in accordance with climate conditions and crop types (pads are available in widths of 1 and 2 meters, at varying levels of thickness)
  • Humidity level lower than 75%.
  • A sufficient number of exhaust fans in order to ensure proper and continuous exchange of air within the greenhouse,
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