Pot-in-pot refrigerator - Revision history

179.49.41.127 at 20:36, 9 May 2025

2025-05-09T20:36:06Z

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	[[Category:Food preservation]]		[[Category:Food preservation]]
			[[Category:Technology]]
			[[Category:Ceramic]]

PolarTwin: /* Effectiveness */ Link

2023-01-14T12:05:40Z

Effectiveness: Link

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	;Type of vegetables or other products needing improved storage		;Type of vegetables or other products needing improved storage

	ECCs or clay pot coolers provide benefits if post-harvest vegetable spoilage is the result of exposure to high temperatures, low humidity, animals, or insects. Some examples of vegetables that are particularly vulnerable to these conditions include eggplants, tomatoes, leafy greens, peppers, and okra.<ref name="Best Practices"/> Non- electric evaporative cooling devices – such as ECCs and clay pot coolers – are not suitable for items that require sustained temperatures below 20 °C (medicine, meat, and dairy products) or foods that require a low humidity environment (onions, coffee, garlic, millet, and other grains).		ECCs or clay pot coolers provide benefits if post-harvest vegetable spoilage is the result of exposure to high temperatures, low humidity, animals, or insects. Some examples of vegetables that are particularly vulnerable to these conditions include eggplants, tomatoes, leafy greens, peppers, and okra.<ref name="Best Practices"/> Non- electric evaporative cooling devices – such as ECCs and clay pot coolers – are not suitable for items that require sustained temperatures below 20 °C ([[medicine]], meat, and dairy products) or foods that require a low humidity environment (onions, coffee, garlic, millet, and other grains).

	;Volume of vegetables stored at any one time<ref name=":0">prkhitman (27 June 2009). "[http://www.fuelefficiency.org/?q=node/132 Cold water in rural India : matka(clay)]". fuel efficiency.org. Retrieved 9 February 2012.</ref>		;Volume of vegetables stored at any one time<ref name=":0">prkhitman (27 June 2009). "[http://www.fuelefficiency.org/?q=node/132 Cold water in rural India : matka(clay)]". fuel efficiency.org. Retrieved 9 February 2012.</ref>

PolarTwin: Dependencies section

2023-01-08T13:36:06Z

Dependencies section

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	* Increased diet variety because food is available for longer into the year.		* Increased diet variety because food is available for longer into the year.
	* The ability to store vaccines and medicines that would otherwise be unavailable in areas without refrigeration facilities.<ref name="Abraham">Abraham, Martin A. A (16 December 2005). "[https://books.google.es/books?id=YgSD_2QpGKoC&q=clay+cooling+device&pg=PA30&redir_esc=y#v=onepage&q=clay%20cooling%20device&f=false The Twelve Principles of Green Engineering]". Sustainability Science and Engineering: Defining Principles (Google ebook ed.). Elsevier. pp. 30, 31. ISBN 9780080481272. Retrieved 4 January 2014.</ref>		* The ability to store vaccines and medicines that would otherwise be unavailable in areas without refrigeration facilities.<ref name="Abraham">Abraham, Martin A. A (16 December 2005). "[https://books.google.es/books?id=YgSD_2QpGKoC&q=clay+cooling+device&pg=PA30&redir_esc=y#v=onepage&q=clay%20cooling%20device&f=false The Twelve Principles of Green Engineering]". Sustainability Science and Engineering: Defining Principles (Google ebook ed.). Elsevier. pp. 30, 31. ISBN 9780080481272. Retrieved 4 January 2014.</ref>

			== Dependencies ==

			* [[Evaporative cooling]]
			* [[Refrigeration]]
			** '''Pot-in-pot refrigerator'''

	==See also==		==See also==
	* [[Canning]]		* [[Canning]]
	* [[Evaporative cooler]]
	* [[Food preservation]]		* [[Food preservation]]

PolarTwin: Link

2022-12-24T17:01:00Z

Link

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	[[File:Tonkrugkühler, Clay pot cooler, Canari Frigo.JPG\|300px\|thumb\|right\|A clay pot cooler filled with vegetables]]		[[File:Tonkrugkühler, Clay pot cooler, Canari Frigo.JPG\|300px\|thumb\|right\|A clay pot cooler filled with vegetables]]
	A '''pot-in-pot refrigerator''', '''clay pot cooler'''<ref name="Peter Rinker">"[https://web.archive.org/web/20140714185554/http://www.movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf The clay pot cooler – an appropriate cooling technology]" (PDF). Peter Rinker / Movement website. Archived from [http://movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf the original] (PDF) on 14 July 2014. Retrieved 17 June 2014.</ref> or '''zeer''' is an [[evaporative cooling]] [[refrigeration]] device which does not use [[electricity]]. It uses a porous outer [[clay]] pot (lined with wet [[sand]]) containing an inner pot (which can be [[ceramic glaze\|glaze]]d to prevent penetration by the liquid) within which the food is placed. The evaporation of the outer liquid draws heat from the inner pot. The device can cool any substance, and requires only a flow of relatively dry air and a source of water.		A '''pot-in-pot refrigerator''', '''clay pot cooler'''<ref name="Peter Rinker">"[https://web.archive.org/web/20140714185554/http://www.movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf The clay pot cooler – an appropriate cooling technology]" (PDF). Peter Rinker / Movement website. Archived from [http://movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf the original] (PDF) on 14 July 2014. Retrieved 17 June 2014.</ref> or '''zeer''' is an [[evaporative cooling]] [[refrigeration]] device which does not use [[electricity]]. It uses a porous outer [[clay]] pot (lined with wet [[sand]]) containing an inner pot (which can be [[ceramic glaze\|glaze]]d to prevent penetration by the liquid) within which the [[food]] is placed. The evaporation of the outer liquid draws heat from the inner pot. The device can cool any substance, and requires only a flow of relatively dry air and a source of water.

	== History ==		== History ==

PolarTwin: Link

2022-12-24T16:57:30Z

Link

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	[[File:Tonkrugkühler, Clay pot cooler, Canari Frigo.JPG\|300px\|thumb\|right\|A clay pot cooler filled with vegetables]]		[[File:Tonkrugkühler, Clay pot cooler, Canari Frigo.JPG\|300px\|thumb\|right\|A clay pot cooler filled with vegetables]]
	A '''pot-in-pot refrigerator''', '''clay pot cooler'''<ref name="Peter Rinker">"[https://web.archive.org/web/20140714185554/http://www.movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf The clay pot cooler – an appropriate cooling technology]" (PDF). Peter Rinker / Movement website. Archived from [http://movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf the original] (PDF) on 14 July 2014. Retrieved 17 June 2014.</ref> or '''zeer''' is an [[evaporative cooling]] [[refrigeration]] device which does not use electricity. It uses a porous outer [[clay]] pot (lined with wet [[sand]]) containing an inner pot (which can be [[ceramic glaze\|glaze]]d to prevent penetration by the liquid) within which the food is placed. The evaporation of the outer liquid draws heat from the inner pot. The device can cool any substance, and requires only a flow of relatively dry air and a source of water.		A '''pot-in-pot refrigerator''', '''clay pot cooler'''<ref name="Peter Rinker">"[https://web.archive.org/web/20140714185554/http://www.movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf The clay pot cooler – an appropriate cooling technology]" (PDF). Peter Rinker / Movement website. Archived from [http://movement-verein.org/downloads/Movement_Clay-pot-cooler_english.pdf the original] (PDF) on 14 July 2014. Retrieved 17 June 2014.</ref> or '''zeer''' is an [[evaporative cooling]] [[refrigeration]] device which does not use [[electricity]]. It uses a porous outer [[clay]] pot (lined with wet [[sand]]) containing an inner pot (which can be [[ceramic glaze\|glaze]]d to prevent penetration by the liquid) within which the food is placed. The evaporation of the outer liquid draws heat from the inner pot. The device can cool any substance, and requires only a flow of relatively dry air and a source of water.

	== History ==		== History ==

PolarTwin: /* See also */ +Food preservation

2022-12-24T16:55:30Z

PolarTwin: -Cats

2022-11-20T23:52:31Z

-Cats

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	* Peter Rinker: Der Tonkrugkühler – eine angepasste Kühlmöglichkeit. Bau- und Nutzungsanleitung. Movement e. V., Teningen 2014. ([https://movement-verein.org/projekte/tonkrugkuehler/ Online article] (pdf files in German/English/French are also linked))		* Peter Rinker: Der Tonkrugkühler – eine angepasste Kühlmöglichkeit. Bau- und Nutzungsanleitung. Movement e. V., Teningen 2014. ([https://movement-verein.org/projekte/tonkrugkuehler/ Online article] (pdf files in German/English/French are also linked))

	~~{{DEFAULTSORT:Pot-in-pot cooler}}~~
	~~[[Category:Appropriate technology]]~~
	[[Category:Food preservation]]		[[Category:Food preservation]]
	~~[[Category:Food safety]]~~
	~~[[Category:Nigerian inventions]]~~

PolarTwin: /* Impact */ Image size

2022-11-20T23:52:05Z

Impact: Image size

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	== Impact ==		== Impact ==
	[[File:Gemüseverkäuferinnen mit Tonkrugkühler, Female vegetable sellers with clay pot cooler, vendeuses des légumes avec un canari frigo, Ouahigouya, Burkina Faso.JPG\|thumb\|right\|Clay pot cooler at a market in Ouahigouya, Burkina Faso]]		[[File:Gemüseverkäuferinnen mit Tonkrugkühler, Female vegetable sellers with clay pot cooler, vendeuses des légumes avec un canari frigo, Ouahigouya, Burkina Faso.JPG\|thumb\|right\|250px\|Clay pot cooler at a market in Ouahigouya, Burkina Faso]]
	Pot-in-pot refrigeration has had multiple positive impacts on the population that uses them beyond the simple ability to keep food fresh for longer periods of time and decreasing instances of food-related disease.<ref name="practical-action" />		Pot-in-pot refrigeration has had multiple positive impacts on the population that uses them beyond the simple ability to keep food fresh for longer periods of time and decreasing instances of food-related disease.<ref name="practical-action" />

PolarTwin: /* Impact */ Fixing last ref

2022-11-20T23:51:09Z

Impact: Fixing last ref

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	* Rural employment opportunities: Farmers are able to support themselves with their increased profits at market, slowing the move into cities. Also, the creation of the pots themselves generates job opportunities.		* Rural employment opportunities: Farmers are able to support themselves with their increased profits at market, slowing the move into cities. Also, the creation of the pots themselves generates job opportunities.
	* Increased diet variety because food is available for longer into the year.		* Increased diet variety because food is available for longer into the year.
	* The ability to store vaccines and medicines that would otherwise be unavailable in areas without refrigeration facilities.<ref name="Abraham">~~{{cite book\|last=~~Abraham~~\|first=~~Martin A. A~~\|title=Sustainability Science and Engineering: Defining Principles\|publisher=Elsevier\|edition=Google ebook\|pages=30, 31\|chapter=The Twelve Principles of Green Engineering\|date=~~16 December 2005~~\|isbn=9780080481272\|chapter-url=~~https://books.google.~~com~~/books?id=YgSD_2QpGKoC&q=clay+cooling+device&pg=PA30~~\|access-date~~=4 January 2014}}</ref>		* The ability to store vaccines and medicines that would otherwise be unavailable in areas without refrigeration facilities.<ref name="Abraham">Abraham, Martin A. A (16 December 2005). "[https://books.google.es/books?id=YgSD_2QpGKoC&q=clay+cooling+device&pg=PA30&redir_esc=y#v=onepage&q=clay%20cooling%20device&f=false The Twelve Principles of Green Engineering]". Sustainability Science and Engineering: Defining Principles (Google ebook ed.). Elsevier. pp. 30, 31. ISBN 9780080481272. Retrieved 4 January 2014.</ref>

	==See also==		==See also==

PolarTwin at 23:49, 20 November 2022

2022-11-20T23:49:59Z

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	== External links ==		== External links ==
	{{wa\|Pot-in-pot_refrigerator}}		{{wa\|Pot-in-pot_refrigerator}}

	==Bibliography==		==Bibliography==
	* Oluwemimo Oluwasola: Pot-in-pot Enterprise: Fridge for the Poor. United Nations Development Programme, New York 2011. ([https://web.archive.org/web/20140714162247/http://www.africa-platform.org/sites/default/files/resources/nigeria_pot_in_pot_enterprise_2011.pdf Online pdf])		* Oluwemimo Oluwasola: Pot-in-pot Enterprise: Fridge for the Poor. United Nations Development Programme, New York 2011. ([https://web.archive.org/web/20140714162247/http://www.africa-platform.org/sites/default/files/resources/nigeria_pot_in_pot_enterprise_2011.pdf Online pdf])

← Older revision		Revision as of 16:55, 24 December 2022
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	* [[Canning]]		* [[Canning]]
	* [[Evaporative cooler]]		* [[Evaporative cooler]]
			* [[Food preservation]]

	== References ==		== References ==