As part of my research work on the improvement of cocoa drying processes, I would like to request your technical support for the realization of an experimental simulation of a hybrid solar dryer.
The device in question is designed to combine solar energy and biomass top-up, in order to optimize drying time, reduce the energy footprint and preserve the quality of the cocoa beans.
A reduced prototype is envisaged, intended only for simulation in the laboratory or workshop, to test:
- the operation of the drying tunnel,
- the efficiency of the forced ventilation system,
- thermal regulation (solar collectors and biomass back-up),
- the quality of the airflow through the racks.
. Datasheet – Reduced prototype of a hybrid solar dryer
General Description
Reduced prototype (functional model) intended for laboratory simulation of solar and hybrid drying (solar + biomass).
Dimensions (reduced prototype)
|Length|1,40 m|
|Width|0,70 m|
|Usable height|1,00 m|
Main components
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Structure: metal or PVC frame, covered with cellular polycarbonate.
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Drying tunnel: removable racks (treated wood or stainless steel).
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Solar thermal collector: absorbent panel painted black (surface ≈ 0.20 × 0.30 m).
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Forced ventilation: 2 mini 12V fans (computer fan type).
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Miniature biomass burner: or 12V electric resistance for simulation.
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Heat exchanger: small metal duct.
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IoT sensors: temperature and humidity (type DHT22),
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Arduino smart controller that receives data from sensors and automatically controls equipment (fans, heater, burner) to regulate drying.
Operation
The air is heated by the solar collector and/or biomass make-up.
The fans provide forced circulation in the tunnel.
The racks receive small quantities of beans or test products (300–500 g).
IoT sensors record temperature and humidity continuously.
I urgently need help. Thank you
