Polygeneration Solar Air Drying

efficient solar air heater with perforated absorber for crop drying

outdoor experiments on a once-through single glazed solar air heater with perforated metal absorber plate were conducted to determine the practical effect of absorber plate porosity as well as suction air flow rate on the collector thermal efficiency and its total pressure drop. three aluminum absorber plates were made perforated by drilling circular holes with different diameter/pitch ratios i...

Drying Energy Efficiency Through Partial Air-Drying: A Case Study

The green lumber products tend towards a state of equilibrium with the surrounding environment. The final target is the equilibrium moisture content (EMC). Whether is natural convection in the lumberyard or forced convection in the kiln drier, the road towards the final EMC consumes time and energy. The air drying operations (natural convection) are not an easy task for the drying management. T...

Evaluation of a Roof-integrated Solar Air Heating System for Drying Foodstuffs

The paper describes the detailed techno-commercial analysis done on a 46 m2 solar air heating system developed in a food processing industry. The solar air heating system was connected to an indoor drier through a duct. A detailed performance analysis was undertaken on the system by loading with 75 kg of ripe mango flake. The product loaded was uniform in size having a thickness of 4mm. On a cl...

Solar Drying Technology for Food Preservation

Food losses in the developing world are thought to be 50% of the fruits and vegetables grown and 25% of harvested food grain (Burden, 1989). Food preservation can reduce wastage of a harvest surplus, allow storage for food shortages, and in some cases facilitate export to high-value markets. Drying is one of the oldest methods of food preservation. Drying makes produce lighter, smaller, and les...

Air Knife Drying Blowers Central Air Systems Vacuum Pumps