How the Cold Air Drain® Works

During a frost night, gravity causes heavy cold air to flow into the lowest places.  Where the cold air flow is blocked, a “cold air lake” is created.  As the cold air builds up, frost damage occurs.

Through the process of “selective extraction”, the SHuR FARMS Cold Air Drain® pulls in the coldest air layer from along the ground.  The state of the art propeller, inside the bell inlet wind tunnel, thrusts the cold air upward to a height of nearly 300 feet, allowing the warmer air from above to settle downward.

As the coldest air is being sent up, it collects and mixes with the warmer lighter air from above.  This helps to give it continuous lift, and allows it to rise higher, until it is dispersed into the upper inversion layer.  Thus, the coldest air is being drained, and will not fall back down.

The Cold Air Drain® effect changes the microclimate in the lower frost prone areas to the same as the higher non-frost areas.  The grower can expect the same yields in all areas of the orchard/vineyard.