Solar cookers use sunlight for cooking, drying and pasteurization. Solar cooking offsets fuel costs, reduces demand for fuel or firewood, and improves air quality by reducing or removing a source of smoke.
The simplest type of solar cooker is the box cooker first built by Horace de Saussure in 1767. A basic box cooker consists of an insulated container with a transparent lid. These cookers can be used effectively with partially overcast skies and will typically reach temperatures of 50–100 °C.
Concentrating solar cookers use reflectors to concentrate solar energy onto a cooking container. The most common reflector geometries are flat plate, disc and parabolic trough type. These designs cook faster and at higher temperatures (up to 350 °C) but require direct light to function properly.
The Solar Kitchen in Auroville, India uses a unique concentrating technology known as the solar bowl. Contrary to conventional tracking reflector/fixed receiver systems, the solar bowl uses a fixed spherical reflector with a receiver which tracks the focus of light as the Sun moves across the sky. The solar bowl's receiver reaches temperature of 150 °C that is used to produce steam that helps cook 2,000 daily meals.
Many other solar kitchens in India use another unique concentrating technology known as the Scheffler reflector. This technology was first developed by Wolfgang Scheffler in 1986. A Scheffler reflector is a parabolic dish that uses single axis tracking to follow the Sun's daily course. These reflectors have a flexible reflective surface that is able to change its curvature to adjust to seasonal variations in the incident angle of sunlight. Scheffler reflectors have the advantage of having a fixed focal point which improves the ease of cooking and are able to reach temperatures of 450-650 °C. Built in 1999, the world's largest Scheffler reflector system in Abu Road, Rajasthan India is capable of cooking up to 35,000 meals a day. By early 2008, over 2000 large cookers of the Scheffler design had been built worldwide.
Other articles related to "cooking":
... Although cooking has traditionally been a process carried out informally in a home or around a communal fire, cooking is also often carried out outside of personal quarters, for example at ... Bakeries were one of the earliest forms of cooking outside the home, and bakeries in the past often offered the cooking of pots of food provided by their customers as an additional service ... Home-cooking" may be associated with comfort food, and some commercially produced foods are presented through advertising or packaging as having been "home-cooked", regardless of their ...
... oldest and best known brand of which is "La Caja China." The cooking process is communal and usually done by men the host is helped by friends or family ... When the cooking is complete, the meat should ideally be tender to the point of falling off of the bone ...
... Less spices are used than in traditional Indian cooking, with fresh spices and herbs for flavouring ... In some cases, cooking dough is spread over the container, like a lid, to seal the foods ... This is known as purdah (veil), but on cooking becomes a bread which has absorbed the flavours of the food and the two are best eaten together ...
... Cross-site cooking is a type of browser exploit which allows a site attacker to set a cookie for a browser into the cookie domain of another site server ... Cross-site cooking can be used to perform session fixation attacks, as a malicious site can fixate the session identifier cookie of another site ... an administrator password which attacker does not know, cross-site cooking could be used to fool innocent users to unintentionally perform the attack ...
... PAM is a cooking spray currently owned and distributed by ConAgra ... various flavors, such as "butter" and "olive oil", meant to impart the flavor of cooking with those ingredients ... and one containing flour suitable for dry-cooking as in baking ...
Famous quotes containing the word cooking:
“Living alone is good for privacy, bad for full-scale cooking and moving heavy furniture.”
—Mason Cooley (b. 1927)
“There is no spectacle on earth more appealing than that of a beautiful woman in the act of cooking dinner for someone she loves.”
—Thomas Wolfe (19001938)
“Reading any collection of a mans quotations is like eating the ingredients that go into a stew instead of cooking them together in the pot. You eat all the carrots, then all the potatoes, then the meat. You wont go away hungry, but its not quite satisfying. Only a biography, or autobiography, gives you the hot meal.”
—Christopher Buckley, U.S. author. A review of three books of quotations from Newt Gingrich. Newties Greatest Hits, The New York Times Book Review (March 12, 1995)