Solar Dryer Market prices for dry products:

 Table 1: Comparison of dry and raw fruit price ranges.

Sr. No.	Fruit	Raw Price Range (per kg)	Dry Price Range (per kg)
1	Apples	₹40 - ₹60	₹250 - ₹350
2	Bananas	₹20 - ₹40	₹150 - ₹250
3	Grapes	₹60 - ₹100	₹400 - ₹600
4	Mangoes	₹50 - ₹80	₹300 - ₹450
5	Oranges	₹30 - ₹50	₹200 - ₹300
6	Pineapples	₹50 - ₹80	₹350 - ₹500
7	Strawberries	₹100 - ₹150	₹600 - ₹900
8	Blueberries	₹180 - ₹250	₹1000 - ₹1500
9	Raspberries	₹150 - ₹200	₹800 - ₹1200
10	Blackberries	₹120 - ₹180	₹700 - ₹1000
11	Watermelons	₹15 - ₹30	₹100 - ₹200
12	Papayas	₹25 - ₹40	₹180 - ₹250
13	Kiwis	₹80 - ₹120	₹500 - ₹700
14	Pomegranates	₹70 - ₹100	₹400 - ₹600
15	Cherries	₹200 - ₹300	₹1200 - ₹1800
16	Apricots	₹100 - ₹150	₹700 - ₹1000
17	Peaches	₹80 - ₹120	₹500 - ₹750
18	Plums	₹60 - ₹100	₹400 - ₹600
19	Cranberries	₹250 - ₹350	₹1500 - ₹2000
20	Dates	₹150 - ₹200	₹1000 - ₹1500
21	Sapota (Chikoo)	₹40 - ₹70	₹300 - ₹450
22	Guava	₹25 - ₹45	₹180 - ₹300

Table 2: Comparison of dry and raw vegetable price ranges.

Sr. No.	Vegetable	Raw Price Range  (per kg)	Dry Price Range (per kg)
1	Tomatoes	₹10 - ₹20	₹80 - ₹120
2	Potatoes	₹10 - ₹15	₹70 - ₹100
3	Onions	₹15 - ₹25	₹100 - ₹150
4	Carrots	₹20 - ₹30	₹120 - ₹180
5	Bell peppers	₹30 - ₹50	₹200 - ₹300
6	Spinach	₹15 - ₹25	₹100 - ₹150
7	Cabbage	₹20 - ₹40	₹150 - ₹250
8	Cauliflower	₹20 - ₹40	₹150 - ₹250
9	Broccoli	₹40 - ₹60	₹250 - ₹350
10	Green beans	₹40 - ₹60	₹250 - ₹350
11	Peas	₹50 - ₹80	₹300 - ₹450
12	Sweet corn	₹30 - ₹50	₹200 - ₹300
13	Okra (Ladyfinger)	₹20 - ₹30	₹120 - ₹180
14	Eggplant (Brinjal)	₹20 - ₹30	₹120 - ₹180
15	Zucchini	₹40 - ₹60	₹250 - ₹350
16	Pumpkin	₹15 - ₹30	₹100 - ₹200
17	Radish	₹10 - ₹20	₹80 - ₹120
18	Beetroot	₹20 - ₹40	₹150 - ₹250
19	Turnip	₹15 - ₹25	₹100 - ₹150
20	Garlic	₹80 - ₹120	₹500 - ₹700
21	Ginger	₹80 - ₹120	₹500 - ₹700
22	Green chillies	₹40 - ₹60	₹250 - ₹350

Table 3: Sample specifications table for solar dryer suitable for mango

Component	Specifications
Solar Dryer Type	Natural convection solar cabinet dryer11
Drying Capacity	1 kg of mango slices
Initial Moisture Content	85% (wet basis)
Final Moisture Content	6% (wet basis)
Solar Collector Area	Minimum 16.8 m²23
Auxiliary Heater	Used in conjunction with direct solar heat
Material Thickness	Locally available materials

 

 

Table 4: Sample specifications table for solar dryer suitable for Sapota Chikoo

Parameter	Specifications
Drying Method	Solar Convective Dryer
Drying Capacity	Up to 200 kg of sapota per batch
Drying Chamber Dimensions	2 meters (length) x 1.5 meters (width) x 1 meter (height)
Solar Collector Area	4 square meters
Material	Insulated aluminium or stainless-steel drying chamber
Temperature Control	Manual or automatic temperature control system, adjustable up to 60°C
Airflow	Natural convection or fan-assisted airflow system
Drying Time	Approximately 2-3 days, depending on weather conditions and desired moisture content reduction
Energy Source	Solar radiation
Backup Heating Source	Biomass or electric heating element (optional)
Controller	Digital or analogue control panel
Monitoring	Temperature and humidity sensors, data logging system (optional)
Ventilation	Adjustable vents for airflow control
Mobility	Fixed or portable design
Accessories	Drying trays, thermometer, hygrometer, cleaning tools
Safety Features	Overheat protection, ventilation system, fire safety measures
Environmental Impact	Low carbon footprint, no greenhouse gas emissions
Certification	Compliance with relevant safety and quality standards (e.g., ISO, CE)

 

Table 5: Sample specifications table for solar dryer suitable for Okra (Bhindi)

Parameter	Specifications
Drying Method	Solar Convective Dryer
Drying Capacity	Up to 150 kg of okra per batch
Drying Chamber Dimensions	3 meters (length) x 2 meters (width) x 1.5 meters (height)
Solar Collector Area	6 square meters
Material	Insulated stainless steel drying chamber
Temperature Control	Manual or automatic temperature control system, adjustable up to 70°C
Airflow	Natural convection or fan-assisted airflow system
Drying Time	Approximately 1-2 days, depending on weather conditions and desired moisture content reduction
Energy Source	Solar radiation
Backup Heating Source	Electric heating element (optional)
Controller	Digital control panel
Monitoring	Temperature and humidity sensors, data logging system (optional)
Ventilation	Adjustable vents for airflow control
Mobility	Fixed or portable design
Accessories	Drying trays, thermometer, hygrometer, cleaning tools
Safety Features	Overheat protection, ventilation system, fire safety measures
Environmental Impact	Low carbon footprint, no greenhouse gas emissions
Certification	Compliance with relevant safety and quality standards (e.g., ISO, CE)

ü These tables provide detailed technical specifications for a solar dryer tailored specifically for different drying. It includes information on drying capacity, chamber dimensions, material, control features, energy source, safety measures, and environmental impact. These specifications are suggested for individuals or organizations interested in adopting solar drying technology for okra processing.