Kalan de Araw

The Kalan de Araw.

It take only 30 minutes continues sun exposure to cook steam rice on a black deep pan with black cover.

You may put weight on legs and tie the arm from moving when strong wind is blowing.

Use mirror finish as a reflector on a 950 mm diameter steel paraboloid.

Arm tube is formed from 3/4 inch Steel Pipe.

Reflector ring is formed from 1/2 inch steel Pipe.

This  is a prototype drawing.

A solar cooker, or solar oven, is a device which uses the energy of direct sun rays (which is the heat from the sun) to heat, cook or pasteurize food or drink. The vast majority of solar cookers presently in use are relatively cheap, low-tech devices. Because they use no fuel and cost nothing to operate, many nonprofit organizations are promoting their use worldwide in order to help reduce fuel costs (for low-income people) and air pollution, and to slow down the deforestation and desertification caused by gathering firewood for cooking. Solar cooking is a form of outdoor cooking and is often used in situations where minimal fuel consumption is important, or the danger of accidental fires is high.

Solar cookers use no fuel, which means that their users do not need to fetch or pay for firewood, gas, electricity, or other fuels. Therefore, over time a solar cooker can pay for itself in reduced fuel costs. Since it reduces firewood use, the solar cooker reduces deforestation and habitat loss. Since there are about 2 billion people who are still cooking on open fires, widespread use of solar cookers could have large economic and environmental benefits.

Solar box cookers attain temperatures of up to about 165 °C (325 °F), so they can be used to sterilize water or prepare most foods that can be made in a conventional oven or stove, from baked bread to steamed vegetables to roasted meat. When solar ovens are placed outside, they do not contribute unwanted heat inside houses.

KALAN DE ARAW REFLECTOR CONES

FLAT PATTERN OF REFLECTOR

Sribe to the steel sheets. Cut but leave 5 mm on outer cirlce. Solder all together. Solder 5 mm diameter wire on outer circle of cone 1 to reinforce and stiffness and remove sharp edge.

More to come!!!

Here is a render of Kalan de Araw.

It collect light energy or photon energy radiated by the sun and focus at the pot.

With these type you could save your money for cooking. It will cost you USD 30 only to actually build these KDA.
Tools are soldering iron 100 watt, steel sheet cutter.
Go to welding shop for the arms and legs construction.
Put weight on legs and wire on arm if wind is blowing hard.
Your electric bill will be low on summer.

Cooking rice: add rice on the boiling water which twice the volume of rice. wait 30 minutes to cook the rice.

The reflector is compose of 5 pieces cut stainless steel mirror surface sheet welded (the thin blue horizontal line) or braze together to form a parabolic reflector (strips is a cone strip from analytic geometry), or a composite of Galvanize sheet and aluminum foil. the reflector can be rotate vertically and fix by the loosening and tightening the lock nut. It can rotate horizontally at PIVOT. 2 arms and pot holder are welded together. the 4 legs are welded to the pivot pipe.

Kalan de Araw is actually 3 pcs, the reflector to arm by lock nut, insert arm and pot holder to pivot with leg. you could put weight on the leg and tie the reflector during wind storm. The reflector could be easily rotate at a 3 axis because the center of gravity is approximately at the focus of the reflector and where the photon is concentrated.

Put your black pot with your favorite dish on the pot holder and focus the photon rays you collect from the Sun. after 45 minutes it is done. be sure there is plenty of sun rays (photon or light rays).

Hope you gain even a little in me these can only means a lot, really really lots. you know right.

KALAN DE ARAW

Reflector can be made from galvanize steel sheet with aluminum foil, use solder for joining.

Legs, arms, pivot is galvanized steel pipe.

Reflector should be tilting at pivot bolt. arm is rotating at pivot.