Adaptive Control System of Coated Seed Dryer

In order to improve the efficiency of the coated seed dryers, improve the drying quality and reduce energy consumption, the adaptive control technology of coated seed dryer was studied. Detection system for temperature measuring, material level measuring, and wind speed and direction measuring were fixed on the drying equipment. According to the detected data, the adaptive control system controlled the dryer blade to adjust the temperature and intensity of air intake. This technology accurately controlled the drying air temperature, moisture and moisture content in the seeds. The test results show that the drying efficiency is 1.38 times of the original dryer, while the power consumption reduces to 40.05%, and intake air temperature reduced 19.84°C, which can improve the seed activity.

A Versatile Heat Pump Seed Dryer

An experimental research seed dryer based on the heat pump principle was built to dry sweet corn (Zea mays var. rugosa L.) seed on husked ears. The dryer is not susceptible to environmentally induced drying rate fluctuations that are common with a conventional open-system forced-air oven. The dryer operates as a closed system and, as a result, provides a more constant drying environment. The ability to control air flow, temperature, and humidity makes the dryer a valuable tool for seed production research.