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solar farm dryer

Solar Air Collector

This small solar dryer is intended for the small landholder or a family. With a capacity of 10 - 100 kg of sliced wet fruit or vegetables, depending on type of fruit and numerous other factors , this dryer is ideal for high-quality natural preservation in a micro-enterprise setting. multiple units provide a significant commercial volume at a combined cost which remains economical and substantially lower than large commercial solar dryers.

Features

The Small-Farm model has three main features which enhance drying speed and efficiency. This compact configuration provides for:

• Horizontal airflow across the food is proven superior versus vertical airflow.

• Solar air collector tilts to accommodate any latitude or season.

• Entire dryer can swivel on a fixed table so operator can rotate unit to track the sun.  

Large commercial dryers, or their solar air collectors, are unable to be rotated during the day to track the sun. This limitation also favors multiple small units.

Advantage of solar air collector

Solar air collector is a specific collector developed by Dryfree solar from 2009.Different from the traditional solar collector using the water as the heat transfer fluid, solar air collector heats the air directly by using the air as heat transfer medium. Air drawn through the system absorbs the collector’s heating,rising in temperature by as much as required temperature, and then the warm air returns to the drying chamber for the drying operation, or passes into the living room for heating. Solar air collector can be widely used in industrial and agricultural drying and spacing heating, etc.

 

Product details  

TECHNICAL SPECIFICATIONS  

Structure
Trays 8 trays of perforated aluminum
Drying area Total tray surface=approx 5sq.M
Cabinet construction Painted plywood with steel supports and top
Photo Voltaic Panel 40 watts with charge controller
Battery 12v deep cycle automatic type(optional)
Fan 4DC fans,6 watts each
Glazing Material Tempered /Textured solar glass
Solar collector Corrugated and painted steel with aluminum frameTilt from 0-30 degrees
Maximum rotation angle 360 degrees
Description
Dimension(L*W*H) 2000*1000*82mm
Grass area 2㎡
Aperture area 1.86㎡
Weight of the empty collector 30kg
Max.idle temperature 130℃
Angle of inclination 20°- 90°
Cover
Cover material Low iron patterned tampered glass
Cover thickness 3.2mm
Cover transmission ≥93%
Absorber
Material Full aluminum sheet
Coating Black chrome
Surface Absorptivity 95%±2%Emissivity 5%±2%
Insulation
Material polyurethane
Frame
Material Aluminum alloy 6063
Thickness 95mm/80mm
Back plate
Material Aluminum sheet(0.5mm thickness)

 

Application  

The solar family dryer is widely used in dehydrate field of food,such as vegetables,fruit,herbs etc.So this dryer can be a solar dryer or Solar Fruit Dryer.

Project photos  

Workers with St. Lucia Ministry of Agriculture during FAO-sponsored dryfree trials in early 2011.As a result of these trials,they requested 5 additional units.

 

Show video   

DRYFREE solar farm dryer

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