An Automatic Heat Pump Grain Dryer with a conveyor belt (Mesh Belt Dryer) is the most energy-efficient technology for removing moisture from grains like paddy, wheat, maize, and seeds.

Unlike traditional dryers that burn wood or gas, this system uses a Heat Pump (refrigeration cycle) to "recycle" heat. It absorbs moisture from the air, condenses it into water, and pumps the dry, warm air back into the grains.

1. How it Works (Heat Pump + Belt System)

1. Feeding: Grains are spread evenly onto a multi-layer Stainless Steel Mesh Belt via a feeder.
2. The Heat Pump Cycle: The heat pump unit dehumidifies the air. It uses a compressor and refrigerant to create a high-temperature "condenser" (heat source) and a low-temperature "evaporator" (moisture remover).
3. Horizontal Airflow: Hot, dry air is blown through the layers of the mesh belt. As the belt moves, the grains are gently turned over, ensuring every kernel is dried uniformly.
4. Moisture Removal: The humid air is sucked back into the heat pump, where the moisture is condensed into water and drained out. This "Closed Loop" system loses almost zero heat to the atmosphere.

2. Technical Specifications (100 – 1,000 kg/hr)

3. Comparison: Heat Pump vs. Hot Air (Diesel/Gas)

• Energy Saving: Heat pumps are 60% to 75% cheaper to operate than electric or gas dryers.
• Grain Quality: Because the temperature is controlled 70 C , there is zero cracking or "yellowing" of the grain. This is vital for high-quality Basmati rice or seeds.
• Environment: No smoke, no CO2 emissions, and no risk of fire since there is no open flame.