Temperature and Humidity Sensor Based Air Blower Controller For Food Drying

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B. Naga Rajesh, V. Nagamani, G. Sowmya


The food industries throughout the world have a lot of drying processes. In this project, a temperature and humidity based air flow control mechanism is proposed. In an airtight closed box where a particular wet food in placed, this process can be applied. A lot of foods required to not to be heated beyond a certain temperature to maintain their molecular integrity and nutrient value. At the same time, their moisture content has to be reduced to a certain level for preservation purpose. This demands, different food types to be dried for varying time duration, based on their moisture content. This system senses the humidity and the temperature and controls the airflow mechanism by varying the blower fan speed accordingly.

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