![]() ![]() The other two examples show air at 45 degrees with a humidity of 20% and 30% respectively. By evaporating the maximum amount of water in air containing 10% humidity, the temperature can be reduced to 22 Celsius (follow the diagonal line to the left). ![]() Follow the dark blue line at the bottom of the graph that points upward at 45 degrees Celsius. ![]() The psychometric chart graphs what temperature can be achieved through evaporative cooling based on the temperature and humidity of the outside air. It feels warmer to be under the water where no evaporation takes place.įigure 1 shows how awesome this power is. Everyone experiences the evaporative cooling power of water, after a swim, when you leave the water and a mild breeze starts evaporating the water droplets on your body. The evaporation of water can reduce the air temperature significantly. The cause is a reduced viability of pollen and as a result, the fruit will be soft, dull, misshapen and smaller in size.Īs fruit and vegetable production in greenhouses gained popularity, growers in hot climates resorted to pad and fan greenhouses. Most fruiting plants are prone to reduced quality and yield at maximum temperatures of more than 30 degrees Celsius. Pad and fan glasshouses have been in use for a long time.
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