I would expect some variations, depending on the country where you buy it. I bought one in Bolivia, in 2010, for Bs. 850 or so - something like US$ 120. This model is about one meter x half a meter, with space for 4-5 pots. The same company also offered one that was half that size (only about half a meter wide, instead of one meter - space for two pots), for a little more than half the price - somewhere around US$ 70 perhaps.
a solar oven works by sun
cookies,brownies,cake,
no, because the solar oven needs heat from the sun in order to cook properly.
Using solar energy has been recorded throughout Ancient History. It is believed that the Saussure were the first to use a solar over in the late 1700's.
Horace de Saussure invented a solar oven in 1767, which collected the heat of the sun and used it to cook food.
a solar oven works by sun
that depends on what you mean by "better." Solar ovens can operate without any electricity or gas, but then, you cannot use a solar oven at night or on cloudy days. Electric ovens can be set at specific temperatures, which is more difficult to do with solar ovens. Electric ovens cost quite a bit of money, while a solar oven can be made with not much more than a cardboard box and aluminum foil. So it all depends on your circumstances and what you are trying to do.
15 Hp cost
The average solar panel cost about $3.00 a watt wholesale. It delivers about $0.0015 per day. The projected life is about 20 years if the weather is not too hot.
Solar Energy Powered Oven Project. (SEPO Project)
solar energy
Because a solar oven would take up less electricity, thus saving power and the environment.
well a solar oven reflects light off of the sides of the foil and it creates heat
You can buy used solar panels from ebay, the average cost for a solar panel is around forty six to seventy nine dollars for a used solar panel but you can probably find a cheaper one on the website.
1767
Yes. Just like any other type of oven a solar oven will produce high temperatures, which is necessary to cook food.
It isn't. A solar oven uses the rays from the Sun, not chemical energy.