Cooling - Revision history

Ranisha at 10:17, 13 July 2020

2020-07-13T10:17:23Z

Ranisha at 10:16, 13 July 2020

2020-07-13T10:16:51Z

Ranisha: /* External Links */

2020-07-13T10:15:31Z

External Links

Leah Stahmann at 17:05, 4 September 2018

2018-09-04T17:05:13Z

Leah Stahmann: /* Evaporative Coolinghttp://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide */

2018-09-04T17:03:50Z

Evaporative Coolinghttp://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide

Johanna at 11:32, 22 August 2018

2018-08-22T11:32:30Z

Leah Stahmann: /* External Links */

2018-08-21T16:11:37Z

External Links

Leah Stahmann at 16:08, 21 August 2018

2018-08-21T16:08:18Z

Leah Stahmann at 16:03, 21 August 2018

2018-08-21T16:03:33Z

Stefan Eibisch: /* Green Cooling */

2018-07-18T15:21:04Z

Green Cooling

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 For household capacities, clay pot coolers can be constructed from a clay pot within another clay pot, with a layer of wet sand in between to provide the water for evaporation, or a simpler arrangement of a clay pot placed in a dish of wet sand covered in a wet cloth. For more storage, larger evaporative cooling chambers can be constructed from a double walled brick structure with wet sand in between and a straw and wood cover.
 == Effectiveness ==
 When operating in appropriate ambient conditions, evaporative cooling devices are low cost, zero energy systems that can provide a stable storage environment with low temperature and high humidity and reduce water loss and spoilage in most vegetables. Studies show evaporative cooling devices to provide conditions of increased humidity to >80% and reduced temperature by 10C.
 = See also =
 [[Green Cooling Initiative|Green Cooling Initiative (GCI)]]
 = External Links<br/> =
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 <references /><br/>
 [[Category:Energy_Efficiency]]

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 = Overview<br/> =
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 </div>
 Air conditioning in buildings is the fastest growing of all the RAC subsectors, especially as more and more people in developing and transitioning countries in warm climates can afford air conditioning in their homes. In some cities, AC use is already responsible for up to 40% of all electricity consumption.<br/>
-<div class="csc-textpicHeader csc-textpicHeader-26">
 === Air conditioning chillers ===
-</div>
 Similarly to unitary air conditioning, the demand for large air conditioning chillers is growing rapidly as more and more new buildings have some kind of central air conditioning installed. These often contain several hundreds of kilograms of refrigerant and consume a lot of electricity.<br/>
-<div class="csc-textpicHeader csc-textpicHeader-26">
 === Domestic refrigeration ===
-</div>
 A refrigerator is often the first electric appliance bought in a household and there are over 1 billion refrigerators and freezers worldwide. This is one of the few subsectors with a commercially available and successful natural refrigerant solution. Further distribution and improvement of energy efficiency is relatively easy and could save high amounts of energy.<br/>
-<div class="csc-textpicHeader csc-textpicHeader-26">
 === Transport Refrigeration ===
-</div>
 Transport refrigeration is a vital part of every cold chain: Perishable goods, mainly food but also medical supplies and other goods, have to be refrigerated on their way from harvest or production to the consumer. Refrigerated transport increases food safety and prevents economic losses due to spoilage. Trucks and trailers are in many parts of the world the main mode of transport for refrigerated goods.<br/>
-<div class="csc-textpicHeader csc-textpicHeader-26">
 === Cooling for Agriculture ===
-</div>
 Refrigeration is required across the entire food supply chain, it makes exporting foods viable and provides people in developed countries the food choices that are expected. It is especially crucial in post-harvest cooling and cold storage. Refrigerated storage can account for up to 10% of the total carbon footprint for some products when electricity inputs, the manufacturing of cooling equipment, and GHG emissions from lost refrigerants are taken into account. Active cooling depends on electricity supply. Passive evaporative-cooling technologies and stand-alone solar chillers exist as alternatives in developing countries but are not yet economically viable for developed countries. According to Bundschuh and Chen improvements to technical elements and operation of modern refrigeration systems have the potential to reduce energy consumption by 15-40%.<br/>
 = Green Cooling<br/> =
@@ Line 72: / Line 69: @@
 == Construction ==
-For household capacities, clay pot coolers can be constructed from a clay pot within another clay pot, with a layer of wet sand in between to provide the water for evaporation, or a simpler arrangement of a clay pot placed in a dish of wet sand covered in a wet cloth. For more storage, larger evaporative cooling chambers can be constructed from a double walled brick structure with wet sand in between and a straw and wood cover.<br/>
+For household capacities, clay pot coolers can be constructed from a clay pot within another clay pot, with a layer of wet sand in between to provide the water for evaporation, or a simpler arrangement of a clay pot placed in a dish of wet sand covered in a wet cloth. For more storage, larger evaporative cooling chambers can be constructed from a double walled brick structure with wet sand in between and a straw and wood cover.
 == Effectiveness ==
-When operating in appropriate ambient conditions, evaporative cooling devices are low cost, zero energy systems that can provide a stable storage environment with low temperature and high humidity and reduce water loss and spoilage in most vegetables. Studies show evaporative cooling devices to provide conditions of increased humidity to >80% and reduced temperature by 10C.<br/>
+When operating in appropriate ambient conditions, evaporative cooling devices are low cost, zero energy systems that can provide a stable storage environment with low temperature and high humidity and reduce water loss and spoilage in most vegetables. Studies show evaporative cooling devices to provide conditions of increased humidity to >80% and reduced temperature by 10C.
 = See also =
 [[Green Cooling Initiative|Green Cooling Initiative (GCI)]]

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 <br/>
 = External Links<br/> =
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 *[http://www.green-cooling-initiative.org/ http://www.green-cooling-initiative.org/]<br/>
 *[http://www.giz.de/proklima www.giz.de/proklima]<br/>
-*[http://d-lab.mit.edu/resources/publications/evaporative-cooling-technologies-improved-vegetable-storage-mali-evaluation Eevaporative-cooling-technologies-improved-vegetable-storage-mali-evaluation (2018)]
+*[[Publication_-_Evaluation_of_Evaporative_Cooling_Technologies_for_Improved_Vegetable_Storage_in_Mali_-_Evaluation|Evaluation of Evaporative Cooling Technologies for Improved Vegetable Storage in Mali - Evaluation]]
-*[http://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide Evaporative-cooling-best-practices-guide (2018)]<br/>
+*[[Publication_-_Evaporative_Cooling_Best_Practices_Guide|Evaporative-cooling-best-practices-guide (2018)]]<br/>
 *[https://answers.practicalaction.org/our-resources/item/evaporative-cooling Evaporative cooling overview] by Practical Action<br/>
 <br/>
 = References =

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 <br/>
 = Evaporative Cooling<ref name="http://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide">http://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide</ref><br/> =
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 '''Evaporative cooling is a low cost cooling process for storing vegetables that does not use electricity.'''<br/>
-[[Evaporative_Cooling_Devices|Evaporative cooling devices]] include clay-pot coolers and larger evaporative cooling chambers (ECCs) that do not require electricity. These storage systems rely on the evaporation of water from a surface, which removes heat and causes a cooling effect inside the cooler.<br/>
+[[Evaporative Cooling Devices|Evaporative cooling devices]] include clay-pot coolers and larger evaporative cooling chambers (ECCs) that do not require electricity. These storage systems rely on the evaporation of water from a surface, which removes heat and causes a cooling effect inside the cooler.<br/>
 == Operating Conditions<br/> ==
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 <br/>
 = See also =
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 <references /><br/>
 [[Category:Cooling]]

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 <br/>
 = Evaporative Cooling<ref name="http://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide">http://d-lab.mit.edu/resources/publications/evaporative-cooling-best-practices-guide</ref><br/> =
@@ Line 66: / Line 67: @@
 '''Evaporative cooling is a low cost cooling process for storing vegetables that does not use electricity.'''<br/>
-Evaporative cooling devices include clay-pot coolers and larger evaporative cooling chambers (ECCs) that do not require electricity. These storage systems rely on the evaporation of water from a surface, which removes heat and causes a cooling effect inside the cooler.<br/>
+[[Evaporative_Cooling_Devices|Evaporative cooling devices]] include clay-pot coolers and larger evaporative cooling chambers (ECCs) that do not require electricity. These storage systems rely on the evaporation of water from a surface, which removes heat and causes a cooling effect inside the cooler.<br/>
 == Operating Conditions<br/> ==
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 <br/>
 = See also =

← Older revision		Revision as of 16:08, 21 August 2018
Line 57:		Line 57:

	Standards are not mandatory, but especially in developing countries without their own standardisation bodies, international standards are often adopted as national standards and sometimes made into laws.<br/>		Standards are not mandatory, but especially in developing countries without their own standardisation bodies, international standards are often adopted as national standards and sometimes made into laws.<br/>
		+
		+	<br/>
		+
		+	<br/>
		+
		+	= Evaporative Cooling<br/> =
		+
		+	'''Evaporative cooling is a low cost cooling process for storing vegetables that does not use electricity.'''<br/>
		+
		+	Evaporative cooling devices include clay-pot coolers and larger evaporative cooling chambers (ECCs) that do not require electricity. These storage systems rely on the evaporation of water from a surface, which removes heat and causes a cooling effect inside the cooler.<br/>
		+
		+	== Operating Conditions<br/> ==
		+
		+	To operate effectively, specific conditions are ideal for evaporative cooling devices, relative humidity should be lower than 40%, daily maximum temperature should be above 25C, there must be access to water to create the evaporative process, and availability of shade and good ventilation for proper air flow.<br/>
		+
		+	== Construction ==
		+
		+	For household capacities, clay pot coolers can be constructed from a clay pot within another clay pot, with a layer of wet sand in between to provide the water for evaporation, or a simpler arrangement of a clay pot placed in a dish of wet sand covered in a wet cloth. For more storage, larger evaporative cooling chambers can be constructed from a double walled brick structure with wet sand in between and a straw and wood cover.<br/>
		+
		+	== Effectiveness ==
		+
		+	When operating in appropriate ambient conditions, evaporative cooling devices are low cost, zero energy systems that can provide a stable storage environment with low temperature and high humidity and reduce water loss and spoilage in most vegetables. Studies show evaporative cooling devices to provide conditions of increased humidity to >80% and reduced temperature by 10C.<br/>

	<br/>		<br/>

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 </div>
 Transport refrigeration is a vital part of every cold chain: Perishable goods, mainly food but also medical supplies and other goods, have to be refrigerated on their way from harvest or production to the consumer. Refrigerated transport increases food safety and prevents economic losses due to spoilage. Trucks and trailers are in many parts of the world the main mode of transport for refrigerated goods.<br/>
 = Green Cooling<br/> =
@@ Line 39: / Line 44: @@
 '''Green Cooling is environmentally friendly air-conditioning and refrigeration (RAC) with minimum negative impacts on the environment.'''<br/>
-The negative environmental effects of cooling appliances are due to their direct and indirect emissions. To avoid emissions, green cooling RAC equipment involves two main factors: Climate-friendly refrigerant and high energy efficiency,&nbsp;an example from the field: [[Greening_the_Indian_Dairy_Value_Chain|Greening the Indian Dairy Value Chain]].<br/>
+The negative environmental effects of cooling appliances are due to their direct and indirect emissions. To avoid emissions, green cooling RAC equipment involves two main factors: Climate-friendly refrigerant and high energy efficiency,&nbsp;an example from the field: [[Greening the Indian Dairy Value Chain|Greening the Indian Dairy Value Chain]].<br/>
 == Natural refrigerants<br/> ==
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 Standards are not mandatory, but especially in developing countries without their own standardisation bodies, international standards are often adopted as national standards and sometimes made into laws.<br/>
 = See also =
@@ Line 58: / Line 64: @@
 [[Green Cooling Initiative|Green Cooling Initiative (GCI)]]
 = External Links<br/> =
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 [http://www.giz.de/proklima www.giz.de/proklima]<br/>
 [[Category:Cooling]]