https://www.coolveg.org/cooling-chambers
Forced-air evaporative cooling is well-suited to provide rapid pre-cooling and improved storage of fruits and vegetables.
These chambers cost less than half the cost of a refrigerated cold room and are 9 times more energy efficient for pre-cooling of fruits and vegetables.
Features of a forced-air evaporative cooling chamber
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Provides the greatest value in hot and dry climates
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Ideal for fruits and vegetables that store well in high humidity environments
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Forced airflow is ideal for rapid pre-cooling
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Lower energy consumption and half the cost of refrigerated cold rooms
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Can be powered by off-grid solar energy systems