Sub-Sector
Biomass
Country
Sri Lanka
Description of technology
This machine is suitable for dehydration of vegetables, fruits, potatoes, jack fruit etc. for preservation. Machine consist with two saw dust stoves for providing the required heat, one electric fan for providing the required air flow, dehydration chamber comprising ten trays, heating chamber and chimney etc. Specification of the dehydrator 1. Capacity - 20 kg (wet weight) 2. Drying period - 6 – 8 hours 3. Temperature - 50 oC – 60 oC 4. Volume of drying chamber – 0.76 m3 5. Number of trays - 9
Specific Features
Use of electricity or fossil fuels in dehydration is replaced with biomass
Keywords (maximum 5)
Saw dust, dehydration
Status of Technology
Fully Commercialized
Benefits/Advantages
1.) Low maintenance 2.) Beneficial when saw dust is readily available 3.) Easy to assemble
Areas of application/Business opportunities
This machine is suitable for dehydration of vegetables, fruits, potatoes, jack fruit etc. for preservation.
List of components used
This machine consists with following components; i. Dehydration chamber ii. Heating chamber iii. Heat exchanger iv. Blower (exhaust fan) v. Sawdust stoves – 02 units vi. Chimney vii. Air outlet control mechanism viii. Thermometer (dial type) ix. Air inlet controlle
Legal protection
Patent
Name of the component
Blower fan (heavy duty) – 12” diameter
Capacity/Wattage (W)
75 W
Voltage input (V)
230 V
Efficiency (%)
1050 cfm
Materials required for construction
No Description 1 Zinc Aluminium sheet 0.42 mm 2 1 ½”x1 ½”x1/4” M/S Angle iron 3 ¾”x3/4”x1/16 M/S box iron 4 1”x1”x3 mm aluminium angle 5 8”x4”x G-22 aluminium sheet 6 8”x4”x1/8” M/S sheet 7 M/S Sheet G-20 8 Dia. 4”
Procedure of Installation
This portable dryer should be installed on a flat surface inside a open shed so that smoke can disperse.
Maintenance requirements
Cleaning and maintenance of heat exchangers periodically.
Name of the organization
USD 720 (Approximate selling price in Sri Lanka)
Address/Zip code

DB Industrial Estate, Ekala, Ja-Ela,
City/country
Sri Lanka
Telephone/fax
0094 -11-2236307, 0094-11-2236384
E-mail
nerdcentre@nerdc.lk