A study of the ability to reduce the temperature and increase the relative humidity of a greenhouse using an evaporative cooling pad system
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Abstract
The purpose of this research was to test the ability to reduce the temperature and increase the relative humidity in a greenhouse equipped with an evaporative cooling pad system. By collecting the temperature and relative humidity inside the greenhouse using the evaporative cooling system (EC) and the fan ventilation system or the Non-evaporative cooling pad system (NEC) with temperature and humidity sensorsfrom 8:00 a.m.to 5:00 p.m. 4 days, divided into 2-day EC system and 2-day NEC system. The testresults show that the EC system can reduce the average daily temperature to 5-8ᣞC on a relatively cool day. The mean house temperature and relative humidity were 18ᣞC and 78%, respectively. The average daily house temperature and relative humidity were 28ᣞC and 85%, respectively. It can be seen that houses equipped with evaporative cooling systems can control the temperature suitable for growing plants that require temperatures in the range of 15-30ᣞC, but the relative humidity is still above average for plants need. Therefore, this greenhouse, if wanting to grow plants, will have to develop a system to control the relative humidity to suit the needs of plants in the future.
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References
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