Wikia

Solar Cookers World Network

Changes: How solar cookers work

View source

Back to page

m (Reverted edits by 64.73.251.75 (talk | block) to last version by Tom Sponheim)
m
 
(18 intermediate revisions by 6 users not shown)
Line 1: Line 1:
 
{{GoogleTranslateLinks}}
 
{{GoogleTranslateLinks}}
   
+
{{Updated|5|15|11}}
 
==Types==
 
==Types==
 
The three most common types of solar cookers are [[box cookers]], curved concentrators ([[Parabolic cookers|parabolics]]) and [[panel cookers]]. Hundreds — if not thousands — of variations on these basic types exist. Additionally, several large-scale solar cooking systems have been developed to meet the needs of institutions worldwide.
 
The three most common types of solar cookers are [[box cookers]], curved concentrators ([[Parabolic cookers|parabolics]]) and [[panel cookers]]. Hundreds — if not thousands — of variations on these basic types exist. Additionally, several large-scale solar cooking systems have been developed to meet the needs of institutions worldwide.
Line 33: Line 33:
   
 
===Retaining heat===
 
===Retaining heat===
  +
{{Main|Greenhouse effect}}
 
A transparent heat trap around the dark pot lets in the sunlight, and keeps the heat that is produced from escaping. This is a clear, heat-resistant plastic bag or large inverted glass bowl (in panel cookers) or an insulated box with a glass or plastic window (in box cookers). Curved concentrator cookers typically don't require a heat trap.
 
A transparent heat trap around the dark pot lets in the sunlight, and keeps the heat that is produced from escaping. This is a clear, heat-resistant plastic bag or large inverted glass bowl (in panel cookers) or an insulated box with a glass or plastic window (in box cookers). Curved concentrator cookers typically don't require a heat trap.
   
Line 52: Line 53:
   
 
==External links==
 
==External links==
*[http://www.humboldt.edu/~ccat/virtualtour/handouts/solar_cookers.pdf Parabolic Solar Cookers] -''Humboldt State University''
+
*[http://www.humboldt.edu/ccat/virtualtour/handouts/solar_cookers.pdf Parabolic Solar Cookers] -''Humboldt State University''
 
*[http://science.howstuffworks.com/solar-cooking.htm/printable How Solar Cooking Works] - ''HowStuffWorks''
 
*[http://science.howstuffworks.com/solar-cooking.htm/printable How Solar Cooking Works] - ''HowStuffWorks''
 
*[http://solarcooking.org/kerr.htm The full text of the book The Expanding World of Solar Box Cooking] - ''[[Barbara Kerr]]''
 
*[http://solarcooking.org/kerr.htm The full text of the book The Expanding World of Solar Box Cooking] - ''[[Barbara Kerr]]''

Latest revision as of 21:02, April 17, 2014

Last updated: May 15, 2011      

TypesEdit

The three most common types of solar cookers are box cookers, curved concentrators (parabolics) and panel cookers. Hundreds — if not thousands — of variations on these basic types exist. Additionally, several large-scale solar cooking systems have been developed to meet the needs of institutions worldwide.

Box-type

Box cookersEdit

Box cookers cook food at moderate to high temperatures and often accommodate multiple pots. Worldwide, they are the most widespread. There are several hundred thousand in India alone. See Solar box cooker designs.
.

Parabolic-type

Parabolic cookersEdit

Curved concentrator cookers, or "parabolics," cook fast at high temperatures, but require frequent adjustment and supervision for safe operation. Several hundred thousand exist, mainly in China. They are especially useful for large-scale institutional cooking. See Parabolic solar cooker designs.
.

Panel-type

Panel cookersEdit

Panel cookers incorporate elements of box and curved concentrator cookers. They are simple and relatively inexpensive to buy or produce. Solar Cookers International's "CooKit" is the most widely used combination cooker. See Solar panel cooker designs.

PrinciplesEdit

Most solar cookers work on the basic principle: Sunlight is converted to heat energy, that is retained for cooking.

Fuel: SunlightEdit

Sunlight is the "fuel." A solar cooker needs an outdoor spot that is sunny for several hours and protected from strong wind, and where food will be safe. Solar cookers don't work at night or on cloudy days, though during the best months for cooking, many foods can be cooked under intermittent clouds or a light haze, as long as food is put out early and there is definitely more sun than not overall. Extra covers or simple foiled boosters can help under marginal skies.

Converting sunlight to heat energyEdit

Dark surfaces get very hot in sunlight, whereas light surfaces don't. Food cooks best in dark, shallow, thin metal pots with dark, tight-fitting lids to hold in heat and moisture.

Retaining heatEdit

Main article: Greenhouse effect

A transparent heat trap around the dark pot lets in the sunlight, and keeps the heat that is produced from escaping. This is a clear, heat-resistant plastic bag or large inverted glass bowl (in panel cookers) or an insulated box with a glass or plastic window (in box cookers). Curved concentrator cookers typically don't require a heat trap.

Capturing extra sunlight energyEdit

One or more shiny surfaces reflect extra sunlight onto the pot, increasing its heat potential. Mirrors, aluminum foil, mylar, mirror-finish metals, chrome sign vinyl, and other shiny materials have all been used successfully for solar cooking, depending on the type of cooker and the environment in which it will be used. See Reflective material.

See AlsoEdit

External linksEdit

Around Wikia's network

Random Wiki