Solar dryer receives the energy from sun and it dry the crops vegetable fruit
Solar dryer consists with different main parts
Black material is coated on heating element inside the box to absorb more heat from solar radiation . outer frame of made up of heat insulating material to maintain the temperature .when direct or diffuse solar radiation will incident then it will not exit .
There are holes at upper and lower portion of the box for circulation of air .
First of all we keep the fooding material inside the box and close the roof glass
When solar radiation incident on black coating through transparent glass then heating aliment absorb the heat from solar radiation due to heat moisture of fooding material get vaporized and vapor droplets accumulates on the roof glass
As well as cold air enter from lower portion of the box and that air get heated
Due to hot air fooding material rapidly get dry and heated air exit throught upper hole
Vaporized water droplets also remove with hot air in the atmosphere and placed fooding material like vegetables get dry
Steps.
PROCESS FLOW DIAGRAM
· MATERIAL FLOW DIAGRAM
· DESIGN MODELLING
· 3D MODELLING
- BILL OF MATERIAL (BOM)
- PROCUREMENT
- FABRICATION
Process Flow Diagram
Solar dryer receives the energy from sun and it dry the crops vegetable fruit
Solar dryer consists with different main parts
Black material is coated on heating element inside the box to absorb more heat from solar radiation . outer frame of made up of heat insulating material to maintain the temperature .when direct or diffuse solar radiation will incident then it will not exit .
There are holes at upper and lower portion of the box for circulation of air .
First of all we keep the fooding material inside the box and close the roof glass
When solar radiation incident on black coating through transparent glass then heating aliment absorb the heat from solar radiation due to heat moisture of fooding material get vaporized and vapor droplets accumulates on the roof glass
As well as cold air enter from lower portion of the box and that air get heated
Due to hot air fooding material rapidly get dry and heated air exit throught upper hole
Vaporized water droplets also remove with hot air in the atmosphere and placed fooding material like vegetables get dry
Material Flow Diagram
1 Polycarbonate sheet
2 Side Wall (Polycarbonate sheet )
3 Legs ( MS Angle)
4 Bottom ( Polycarbonate sheet)
5 Back Wall ( Polycarbonate sheet)
6 Front wall ( Polycarbonate sheet)
- Polycarbonate sheet
Polycarbonate sheet is a type of plastic that can withstand high temperature and high pressure. Polycarbonate sheet is used for solar dryers because it can withstand the heat from the sun and allow you to dry agricultural products without any electricity or gas.
The polycarbonate sheet for solar dryer is a thin, transparent, and durable material that has excellent light transmission properties.
It is often used in the construction of greenhouses and solar dryers. The polycarbonate sheet for solar dryer also offers protection from UV rays and provides insulation against heat loss.
This material is made from polycarbonates, which are thermoplastic polymers. Polycarbonates are used in many applications that require a durable material that is resistant to heat and UV light. Polycarbonate sheets can be used as a substrate for solar dryers.
2. Side Wall
Polycarbonate sheets
3. MS angles
MS angle or mild steel angle is an L-shaped cross-section used in the construction of various structures and buildings. The most commonly used MS angle or metal angle is the one that forms a 90-degree angle with two sides of equal length and width
4 MS Nut & bolts
In physics, in the theory of general relativity, spacetimes with at least a 1-parameter group of isometries can be classified according to the fixed point-sets of the action. Isolated fixed points are called nuts. The other possibility is that the fixed point set is a metric 2-sphere, called bolt.
Bill Of Material
We Find Out BOM & Material rate Different Types of material Using
is given below
Rough Drawing ( Hand Sketch)
Design Modeling
Fabrication
Step 1.
Material Purchasing
purchased All materials Like a bill of material.
- 30X30X3 MS angle,
- 40X40X5 MS Angle,
- 30X3 MS Flat Plate
- 8mm Plywood
- 12mm Plywood
- 6mm Polycarbonet sheet
- 15mm NUT & BOLTS
- lock plate
- handle
Step 2
Cutting & Drilling
An MS Angle Cut as per our measurement & then Drilled & finishing by grinding
Step 3
welding work
Frame of 30X30X3 MS angle was fabricated Total two Frames were fabricated one top and other bottom frame was welded
Top Frame Size 71″X38″
Bottom Frame 71″X36″
Step 4
Frame & vertical legs Join
step 5
Side wall Cutting work
Back wall polycarbonate 6mm thick 18″X71″
Front wall polycarbonate 6mm thick 6″X71″
Side wall polycarbonate 6mm thick 38″X6″X18″ 2 Nos
we cut all side of polycarbonate
Bottom Plywood Cutting work
12mm Plywood
Step 6
Painting work
Structure Painting work
Structure = Red oxide + Silver coated color
Step 7
Bottom Plywood Cutting & Black Covering.
Step 8
polycarbonate sheet fitting & Structure fitting work
Step 9
Door Work
Polycarbonate Sheet two Sheet cutting work
36″X38″
Step 10
Door Fitting Work
Door fitting work with help of hinges
Step 11
Cleaning & Finishing Work
Dryer Clean work
Finally Completed to dryer.
Hand Over To food Lab
Trail Work
we load the 5kg Onion, we take some readings
we take Readings
24/04/2023
Temp 39
| Sr no | Time | Thermometer (Degree Celsius) | |
| 1 | 10:00 AM | 47 | |
| 2 | 11:00 AM | 36 | |
| 3 | 12:00 AM | 35 | |
| 4 | 01:00 PM | 39 | |
| 5 | 02:00 PM | 35 | |
| 6 | 03:00 PM | 34 | |
| 7 | |||
| 8 | |||
| 9 | |||
| 10 | After Drying wtg | ||
| Wtg | 1536g |
2 nd day
25/03/2023
Temp 39
| Sr no | Time | | Thermometer (Degree Celsius) |
| 1 | 10:00 AM | | 43 |
| 2 | 11:00 AM | | 44 |
| 3 | 12:00 AM | | 47 |
| 4 | 01:00 PM | | 48 |
| 5 | 02:00 PM | | 46 |
| 6 | 03:00 PM | | 45 |
| 7 | 04:00 PM | | 41 |
| 8 | 05:00 PM | | 38 |
| 9 | | | |
| 10 | | | after Drying wtg |
| | Wtg | | 775g |
Total 4245 gm water has gone out of it
Dryer Efficiency
polycarbonate sheet 20.26%
plywood sheet 19.53%
dome 18.66%
Chikku Dry
We took the second trial on Chikku., We put 5 kg chikku in it
26/04/2023
temp 40
| Sr no | Time | | Thermometer (Degree Celsius) |
| 1 | 10:00 AM | | 42 |
| 2 | 11:00 AM | | 44 |
| 3 | 12:00 AM | | 48 |
| 4 | 01:00 PM | | 49 |
| 5 | 02:00 PM | | 47 |
| 6 | 03:00 PM | | 45 |
| 7 | 04:00 PM | | 42 |
| 8 | 05:00 PM | | 39 |
| 9 | | | |
| 10 | | | |
| | Wtg | | 2304 g |
2 nd Day
27/04/2023
temp 40
| Sr no | Time | | Thermometer (Degree Celsius) |
| 1 | 10:00 AM | | 41 |
| 2 | 11:00 AM | | 43 |
| 3 | 12:00 AM | | 48 |
| 4 | 01:00 PM | | 48 |
| 5 | 02:00 PM | | 46 |
| 6 | 03:00 PM | | 45 |
| 7 | 04:00 PM | | 42 |
| 8 | 05:00 PM | | 38 |
| 9 | | | |
| 10 | | | |
| | Wtg | | 1804 g |
3 Rd Day
28/03/2023
Temp 39
| Sr no | Time | | Thermometer (Degree Celsius) |
| 1 | 10:00 AM | | 42 |
| 2 | 11:00 AM | | 44 |
| 3 | 12:00 AM | | 48 |
| 4 | 01:00 PM | | 49 |
| 5 | 02:00 PM | | 47 |
| 6 | 03:00 PM | | 45 |
| 7 | 04:00 PM | | 42 |
| 8 | 05:00 PM | | 39 |
| 9 | | | |
| 10 | | | |
| | Wtg | | 1687 g |
4 th Day
29/03/2023
Temp 39
| Sr no | Time | | Thermometer (Degree Celsius) |
| 1 | 10:00 AM | | 42 |
| 2 | 11:00 AM | | 44 |
| 3 | 12:00 AM | | 48 |
| 4 | 01:00 PM | | 49 |
| 5 | 02:00 PM | | 47 |
| 6 | 03:00 PM | | 45 |
| 7 | 04:00 PM | | 42 |
| 8 | 05:00 PM | | 39 |
| 9 | | | |
| 10 | | | |
| | Wtg | | 1601 gm |
From here on, the water did not go away. It is as well as the weight will remain in it
5kg chikku – 1601gm
water removing the 3399gm
