Figure 1: Schematic Diagram of LAMB Dryer
Fresh paddy is put inside the paddy feeder (1). Paddy from the feeder will be transferred into the LAMB dryer (3) using a vertical conveyor (2). Air from the LAMB dryer is sucked by the air blower (6) and sent to the air heater box (5) and then the hot air is sent to the LAMB dryer through the upper part of the perforated inner tube. The heating temperature is controlled by a closed-loop temperature control system which uses a thermocouple sensor, whereby the heating capacity of the air heater is adjustable to deliver the desired temperature of the paddy bed monitored by a temperature probe. The system is energy efficient as the hot air is recycled back through the close-loop aeration/air heating system. It minimizes the electrical energy consumption since the hot air is recycled back to the heater. The outer wall of the dryer is made of double walling and fill in between 50mm thick of ceramic fiber fire proof insulation to reduce heat loss through the dryer drum. The moisture content of the paddy is monitored manually through a sampling port on the LAMB dryer. The dried paddy is withdrawn from the bottom of the LAMB using a mechanical conveyor belt.
Figure 2: The cross-sectional view of air movement inside LAMB Dryer