Solar Parabolic Cooker
Stop spending on commercial LPG cylinders. Cook food for up to 120 people using concentrated solar energy.
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Description
System Overview
How can rural schools and temples reduce cooking LPG cylinder consumption?
With the rising costs of commercial LPG cylinders in India, institutional cooking has become highly expensive. The Radha Solar Parabolic Cooker solves this challenge by harnessing zero-cost solar thermal energy. By focusing direct sunlight onto the bottom of a black-coated cooking pot, the parabolic dish generates intensive heat similar to a gas burner. It can boil 15 liters of water in under 30 minutes, allowing staff to cook rice, dal, and vegetables for up to 120 people per meal using only solar energy during the day.
Cost Savings, ROI, and Subsidies for Trusts and Schools
The financial return on the Parabolic Cooker is immediate. By saving up to 4 commercial cylinders per month, school trusts and temples can recoup their initial purchase cost in less than 12 months. The system is MSME-approved and qualifies for school infrastructure grants, NGO development funds, and corporate social responsibility (CSR) sponsorships. Furthermore, it requires no recurring fuel, shielding rural institutions from energy inflation.
Safety and Weather Resilience in Rural India
Unlike firewood stoves (Chulhas), which release highly toxic smoke, the Parabolic Cooker provides a completely clean, smoke-free cooking environment, protecting the health of school cooks and children. The structure is built with heavy hot-dip galvanized MS pipes, ensuring wind stability and rust resistance during heavy rains. The reflective mirror facets are tempered and UV-resistant, ensuring they do not degrade under intense sun exposure.
State-Wise Institutional Use Cases:
Specifications
Technical Specifications
Features
Key Design Features
Applications
Industrial Implementation
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Target Industries
FAQ
Frequently Asked Questions
How much LPG can the Solar Parabolic Cooker save monthly?
In school hostels and community kitchens, the 2.7 Sq meter model can cook meals for up to 100-120 people. By using solar power for daytime boiling and cooking, institutions save up to 3 to 4 commercial LPG cylinders every month, recovering their investment in less than a year.
How does the tracking work during cooking?
The cooker dish features a smooth manual gear mechanism. The user rotates a handwheel every 35-40 minutes to keep the dish aligned with the sun, keeping the high-temperature focal point focused on the bottom of the black cooking pot.
Can it cook on windy or cold winter days?
Yes. Solar parabolic cookers work on direct solar radiation, not ambient air temperature. As long as there is clear sunlight, the dish will concentrate heat to 250°C+ even in cold winter months in North India.
Is it safe for school cooks to use?
Yes. The pot is positioned at the center focal point, and the structure is stable. Cooks are trained to stand behind the dish and wear sunglasses during adjustments to avoid solar glare.
What types of food can be prepared on it?
It is ideal for any food that requires boiling, steaming, or frying, such as rice, lentils, vegetables, pasta, tea, coffee, and traditional Indian flatbreads (roti).
How long does it take to cook a pot of rice?
A large pot of rice (approximately 5-7 kg) takes about 30 to 45 minutes on a clear sunny day, matching the speed of a standard commercial LPG burner.
Does the cooker work inside the kitchen?
No. The parabolic dish must be placed outside in direct, unshaded sunlight. Some schools build a small door or pass-through window from the courtyard to the kitchen.
What happens if a mirror facet gets damaged?
Our dishes are modular. If a mirror facet is broken, you can easily replace that single segment instead of replacing the entire dish.
Does it work on cloudy days?
Like all concentrated solar systems, it requires direct sun. On overcast or rainy days, you will need to use your regular LPG cylinder or backup stove.
Can we use any cooking pot?
We recommend using thick-bottomed vessels painted matte black on the outside to absorb maximum thermal energy. Shiny stainless steel vessels reflect heat.
What is the weight of the 2.7 Sq meter system?
The system weighs around 85 kg but is mounted on a heavy-duty base. We offer wheeled bases for easy transport across concrete yards.
Is the cooker eligible for government subsidies?
Yes, various state governments and renewable energy development agencies (like GEDA, HAREDA, etc.) offer subsidies for community solar cookers.
How do we clean the mirrors?
Simply wipe them down with a soft damp cloth. Avoid using abrasive sponges that might scratch the silvered glass surfaces.
Can it boil drinking water?
Absolutely. It is an excellent zero-cost tool for boiling and pasteurizing large batches of drinking water in rural schools to ensure student health.
Can it be used for baking?
Yes, by using a double-pot setup with sand, it can act as a solar oven for baking bread and traditional cakes.
Is assembly difficult?
We ship the systems semi-assembled with a detailed instruction manual. Our technicians or local distributors handle the final onsite setup.
Does the structure rust in coastal areas?
No, the entire structural frame is hot-dip galvanized, offering protection against salty coastal air and heavy monsoon rains.
Does it come with cooking vessels?
We offer custom matte-black coated institutional cooking vessels as an add-on accessory matching the receiver ring size.
What is the focal length of the dish?
The focal length is approximately 75 cm to 90 cm depending on the dish diameter, focusing all energy directly onto the pot holder.
How do we protect it when not in use?
When not in use, the dish should be turned face down or parked vertically facing away from the sun to prevent accidental focal heating of nearby objects.
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