Abstract.This thesis presents a study about. Temperature and humidity control system in the greenhouse. At present, because most of the farmers planted in greenhouse is watering time, which may make the yield of small number. The percent filling plant grown quite low because of can"t control the temperature, humidity, make plant grows slow or damaged. Make the farmers plant in Greenhouse in trouble. Yield little time to farm waste. So if you buy a temperature and humidity controller selling in the market price สูงมา to 6 000-15 000,,). Which is expensive compared to the income of the farmers. Therefore, it was inspired to make the invented modified artificial. Temperature and humidity control system in the greenhouse. The self-sufficient by ah phone principles of engineering to reduce the purchasing cost control อุณหภูมิและ moisture of farmers by the invention use and comply with the speech of economy ของพระบาทสมเด็จพระ Bhumibol.
การแปล กรุณารอสักครู่..
