Solar Tray Dryer Machine

A Solar Tray Dryer Machine uses the sun's energy to heat air, which then circulates through trays holding food, evaporating moisture for preservation, featuring a collector, drying chamber with trays, and ventilation, offering contamination protection, controlled drying, and fuel-free operation, with designs ranging from simple box types to advanced hybrid systems using fans and batteries for consistent drying.

Working Principle

Energy Capture: A dark absorber plate or chamber heats up from solar radiation.

Air Heating: Air enters the collector, gets heated, and rises due to convection.

Moisture Removal: Warm air flows over trays of sliced fruits, vegetables, or spices, picking up moisture.

Humid Air Exhaust: Humid air exits through vents or exhaust fans, while fresh, dry air enters, creating continuous airflow.

Key Components & Types

Direct Dryers: Food is placed in a box with a transparent lid, using the greenhouse effect for heating (e.g., simple box dryers).

Indirect Dryers (Distributed): Separate solar collector heats air, which is then blown into the drying chamber, better for sensitive foods.

Components: Solar collector, insulated drying chamber, trays (often mesh/screen), transparent cover (glass/plastic), vents, and sometimes fans/batteries.

Benefits

Contamination-Free: Protects food from dust, insects, and animals, unlike open-air drying.

Controlled Environment: Provides consistent temperatures (50-80°C) for faster, more uniform drying.

Cost-Effective: Uses free solar energy, eliminating fuel costs.

Versatile: Dries various produce like fruits, vegetables, herbs, spices, and fish.

Modern Features

Hybrid Systems: Combine solar with biomass/fossil fuels for cloudy days.

Forced Convection: Use solar-powered fans for enhanced airflow.

Battery Backup: Solar panels can power fans and lights for continuous operation.

MODEL CAPACITY

25KG 25KG

50KG 50KG