Sigma400 Series Bulk Solids Cooler
The Solex Heat Exchanger employs a simple, yet effective level control system. The inlet hopper distributes incoming product evenly into the heat exchanger plate bank, forming a conical pile. The bulk solids then pass slowly through the plate bank with sufficient residence time to obtain the specified product temperature. The discharge feeder regulates the product flow.
For continuous operation, the control system varies the rate of the discharge feeder to maintain a preset level in the inlet hopper. For batches, the Solex heat exchanger can also operate between high and low level switches maintaining the product level above the heat exchanger plates.
Product temperature is typically measured at the inlet and outlet of the heat exchanger. If it is required to control the discharge temperature to achieve a specified target temperature, this is done by modulating the temperature of the heat transfer fluid. This can easily be configured as a control loop to maintain a specified product discharge temperature.