Sustainable Energy for Cooling - Revision history

Ranisha: /* Introduction */

2020-10-19T10:15:45Z

Introduction

Ranisha: /* Preserving Food Using Mobile Solar-powered Cold Storages */

2020-10-19T10:14:06Z

Preserving Food Using Mobile Solar-powered Cold Storages

Ranisha: /* Biogas Milk Chilling for Dairy Farmers */

2020-10-14T09:40:03Z

Biogas Milk Chilling for Dairy Farmers

Ranisha at 09:39, 14 October 2020

2020-10-14T09:39:01Z

Ranisha at 09:44, 19 August 2020

2020-08-19T09:44:57Z

Ranisha at 20:06, 21 July 2020

2020-07-21T20:06:28Z

Ranisha: /* DIY Solar Cooling */

2020-07-15T09:47:50Z

DIY Solar Cooling

Ranisha at 09:47, 15 July 2020

2020-07-15T09:47:19Z

Show changes

Ranisha at 08:02, 15 July 2020

2020-07-15T08:02:54Z

Show changes

Ranisha: /* Technologies */

2020-07-09T10:18:05Z

Technologies

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 = <span style="color:#00A3AD">Introduction</span><br/> =
-One third of food production worldwide is lost every year. This is partly due to missing infrastructures for reliable electricity supply in rural areas of the Global South impeding the use of appropriate refrigeration technologies.<br/>
+One third of food production worldwide is lost every year. This is partly due to missing infrastructures for reliable electricity supply in rural areas of the Global South impeding the use of appropriate refrigeration technologies. [https://www.powerforall.org/insights/dre-technologies/powering-clean-farm-fork-solutions-zerohunger-world Read more...]
 <span class="link3">[[Cooling for Agriculture|Cooling]] mostly relies on the usage of refrigerants which can have a high global warming impact and ozone depleting properties, being the cause of major climate and environmental problems. Especially low efficiency levels and high leakage rates of refrigeration equipment can increase emissions drastically. '''Direct emissions '''are caused by the release of a refrigerant which can occur because of leaks from pipes or during regular servicing of the equipment. The potential of reducing these emissions remains in adopting technologies that use natural refrigerants, an approach called [[Green Cooling Initiative|Green Cooling.]]<br/>'''Indirect emissions''' are caused by energy consumption and contribute to 2/3 of the total emissions. These depend on the source of electricity and can be reduced by raising energy efficiency and/or using renewable energies. Many innovative approaches have shown how clean energy solutions for cooling open up new opportunities, especially for off-grid areas while helping to mitigate climate change.<br/>
 [[File:Food losses FAO.jpg|thumb|center|600px|Source: FAO.]]<br/>
 = <span style="color:#00A3AD">Technologies</span><br/> =

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 == <span style="color:#00A3AD">Preserving Food Using Mobile Solar-powered Cold Storages</span><br/> ==
-Worldwide, postharvest food losses account for more than 30% of the total food produced. In Kenya, this number is even higher with over 40-50% of the produced food lost/wasted during the entire food value chain and in Nigeria 45% of the postharvest is lost due to lack of cold storage.
+Worldwide, postharvest food losses account for more than 30% of the total food produced. In Kenya, this number is even higher with over 40-50% of the produced food lost/wasted during the entire food value chain and in Nigeria 45% of the postharvest is lost due to lack of cold storage. [https://www.powerforall.org/insights/dre-technologies/powering-clean-farm-fork-solutions-zerohunger-world Read more...]
 Solar Freeze, a company based in Kenya provides famers with solar-powered mobile cold storage for postharvest food preservation. Farmers can use their app to find the nearest cold storage and pay using M-PESA or cash. '''[http://www.solarfreeze.co.ke/ Read more...]'''
 In India, there are local companies such as [https://www.ecozensolutions.com/ Ecozen] and [https://milaap.org/fundraisers/connect-our-farmers TAN90] which provide similar cold storage services to the farmers. Another example of a similar company is the [https://www.inspirafarms.com/ Inspira Farms].
 = <span style="color:#00A3AD">Publications & Tools</span><br/> =

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 == <span style="color:#00A3AD">Biogas Milk Chilling for Dairy Farmers</span><br/> ==
-In the emerging dairy industry in East Africa, the demand is expected to double in the coming years. However, only 15 percent of milk produced reaches the formal market, partly due to the lack of access to a reliable power grid for cooling. As there had been a lack of solutions available on the market to provide milk chilling technologies at micro-scale, SimGas together with SNV developed a small-scale biogas-powered milk chiller for smallholder farmers in Kenya, Tanzania and Rwanda. '''<span class="link3">[[Biogas Milk Chilling to Increase Productivity and Incomes of Dairy Farmers|Read more…]</span>'''<br/>
+In the emerging dairy industry in East Africa, the demand is expected to double in the coming years. However, only 15 percent of milk produced reaches the formal market, partly due to the lack of access to a reliable power grid for cooling. As there had been a lack of solutions available on the market to provide milk chilling technologies at micro-scale, SimGas together with SNV developed a small-scale biogas-powered milk chiller for smallholder farmers in Kenya, Tanzania and Rwanda. '''<span class="link3">[[Biogas Milk Chilling to Increase Productivity and Incomes of Dairy Farmers|Read more…]]</span>'''<br/>
 [[File:Biogas Cooling in Kenya-Woman with milk cans.JPG|thumb|center|600px|Woman using SimGas Technology to cool her milk in Kenya (GIZ/Kameweru).|alt=Biogas Cooling in Kenya-Woman with milk cans.JPG]]
 == <br/><span style="color:#00A3AD">ColdHubs</span><br/> ==

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 == <span style="color:#00A3AD">Biogas Milk Chilling for Dairy Farmers</span><br/> ==
-In the emerging dairy industry in East Africa, the demand is expected to double in the coming years. However, only 15 percent of milk produced reaches the formal market, partly due to the lack of access to a reliable power grid for cooling. As there had been a lack of solutions available on the market to provide milk chilling technologies at micro-scale, SimGas together with SNV developed a small-scale biogas-powered milk chiller for smallholder farmers in Kenya, Tanzania and Rwanda. '''[https://poweringag.org/innovators/biogas-milk-chilling-increase-productivity-incomes-dairy-farmers Read more…]'''<br/>
+In the emerging dairy industry in East Africa, the demand is expected to double in the coming years. However, only 15 percent of milk produced reaches the formal market, partly due to the lack of access to a reliable power grid for cooling. As there had been a lack of solutions available on the market to provide milk chilling technologies at micro-scale, SimGas together with SNV developed a small-scale biogas-powered milk chiller for smallholder farmers in Kenya, Tanzania and Rwanda. '''<span class="link3">[[Biogas Milk Chilling to Increase Productivity and Incomes of Dairy Farmers|Read more…]</span>'''<br/>
 [[File:Biogas Cooling in Kenya-Woman with milk cans.JPG|thumb|center|600px|Woman using SimGas Technology to cool her milk in Kenya (GIZ/Kameweru).|alt=Biogas Cooling in Kenya-Woman with milk cans.JPG]]
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 == <span style="color:#00A3AD"><br/>Biogas-Powered Evaporative Cooling for the Dairy Industry</span><br/> ==
-The growing dairy industry throughout sub-Saharan Africa suffers from a lack of proper refrigeration options, which causes farmers to lose 20-50 percent of their milk to spoilage. The University of Georgia Research Foundation (UGARF) together with the Smallholder Fortunes’ small scale demonstration dairy farm in Uganda have developed the EvaKuula: a biogas unit that works with cow manure and allows a mild heat treatment of the milk, followed by a gentle evaporative cooling process, keeping the milk fresh overnight. Working with local manufacturers, financing models are being developed to bring the local production to commercial scale. Using the EvaKuula, smallholder dairy farmers not only profit from access to clean energy, which can be used for lighting and cooking, but also reduce greenhouse gas emissions from cow manure fermentation. 42 farmers (50 percent of them being women) have so far benefitted from the deployment of this device. '''[https://poweringag.org/innovators/biogas-powered-evaporative-cooling-dairy-industry Read more…]'''
+The growing dairy industry throughout sub-Saharan Africa suffers from a lack of proper refrigeration options, which causes farmers to lose 20-50 percent of their milk to spoilage. The University of Georgia Research Foundation (UGARF) together with the Smallholder Fortunes’ small scale demonstration dairy farm in Uganda have developed the EvaKuula: a biogas unit that works with cow manure and allows a mild heat treatment of the milk, followed by a gentle evaporative cooling process, keeping the milk fresh overnight. Working with local manufacturers, financing models are being developed to bring the local production to commercial scale. Using the EvaKuula, smallholder dairy farmers not only profit from access to clean energy, which can be used for lighting and cooking, but also reduce greenhouse gas emissions from cow manure fermentation. 42 farmers (50 percent of them being women) have so far benefitted from the deployment of this device. '''<span class="link3">[[Biogas-Powered Evaporative Cooling for Uganda’s Dairy Industry|Read more…]]</span>'''
 == <span style="color:#00A3AD">DIY Solar Cooling</span><br/> ==
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 == <span style="color:#00A3AD"><br/>SunDanzer: Solar Powered Refrigeration for Kenyan Dairy Farms</span><br/> ==
-In Kenya, 85 percent of dairy farms do not have access to refrigerated storage and transportation due to limited electrification in rural areas, leading to dramatic losses from milk spoilage. SunDanzer together with Winrock International have developed an affordable small-scale portable cooling system: the photovoltaic refrigerator (PVR) runs on solar energy and uses phase-change materials – substances capable of storing and releasing large amounts of energy – and therefore needs no battery. Additionally, the innovators have developed milk can blankets to retain the temperature during transportation. 60 solar-powered milk cooling refrigerators have been installed so far in Kenya and two in Rwanda. Users of SunDanzer’s refrigerators have stated that the technology has delivered many benefits, including increased financial security for households, increased food preservation, and saved time. '''[https://poweringag.org/innovators/solar-powered-refrigeration-dairy-farms Read more…]'''<span style="color:#00A3AD"></span><br/><span style="color:#00A3AD"></span>
+In Kenya, 85 percent of dairy farms do not have access to refrigerated storage and transportation due to limited electrification in rural areas, leading to dramatic losses from milk spoilage. SunDanzer together with Winrock International have developed an affordable small-scale portable cooling system: the photovoltaic refrigerator (PVR) runs on solar energy and uses phase-change materials – substances capable of storing and releasing large amounts of energy – and therefore needs no battery. Additionally, the innovators have developed milk can blankets to retain the temperature during transportation. 60 solar-powered milk cooling refrigerators have been installed so far in Kenya and two in Rwanda. Users of SunDanzer’s refrigerators have stated that the technology has delivered many benefits, including increased financial security for households, increased food preservation, and saved time. '''<span class="link3">[[SunDanzer: Solar-Powered Refrigeration for Kenyan Dairy Farms|Read more...]]</span>'''
 == <span style="color:#00A3AD">Reducing Milk Spoilage through Solar-Powered Chilling</span><br/> ==
-Perishable food worth of 10 billion US Dollars is wasted annually in India because of unreliable cold-chain supply networks. Especially in farming areas and villages, the lack of reliable electricity is a challenge for running refrigeration systems. With India being the largest consumer and producer of milk in the world, Promethean Power Systems together with Hatsun Agro and Orb Energy have developed a solar milk cooling system that uses an innovative thermal energy battery pack. Charging on intermittent power sources such as solar power and/or a few hours of grid electricity, it allows changing the local food situation considerably. '''[https://poweringag.org/innovators/reducing-milk-spoilage-through-solar-powered-chilling Read more…]'''<span style="color:#00A3AD"></span><br/><span style="color:#00A3AD"></span>
+Perishable food worth of 10 billion US Dollars is wasted annually in India because of unreliable cold-chain supply networks. Especially in farming areas and villages, the lack of reliable electricity is a challenge for running refrigeration systems. With India being the largest consumer and producer of milk in the world, Promethean Power Systems together with Hatsun Agro and Orb Energy have developed a solar milk cooling system that uses an innovative thermal energy battery pack. Charging on intermittent power sources such as solar power and/or a few hours of grid electricity, it allows changing the local food situation considerably. '''<span class="link3">[[Reducing Milk Spoilage through Solar Powered Milk Chilling|Read more...]]</span>'''
 == <span style="color:#00A3AD">SunChill Solar Cooling for Horticultural Preservation</span><br/> ==
-An innovation designed by Rebound Technologies (United States) aims to reduce post-harvest losses and enhance food consumption quality. The first versions of the SunChill cooling system have been tested in Mozambique and after being validated, a commercialization and expansion to the market is planned. The solar off-grid refrigeration system allows to immediately cool down food during harvest and provides continued product cooling at markets or central processing facilities. SunChillTM transforms 50 °C solar thermal energy into 10 °C refrigeration, doubling shelf life and creating access to nutritional fruits and vegetables. The innovation is also expected to create manufacturing and service-based employment. By the end of the project, Promethean sold over 600 units, enabling 25,000 dairy farmers to chill their milk without diesel generators and to get their milk to the market safely. '''[https://poweringag.org/innovators/sunchill-solar-cooling-horticultural-preservation Read more…]'''<br/>
+An innovation designed by Rebound Technologies (United States) aims to reduce post-harvest losses and enhance food consumption quality. The first versions of the SunChill cooling system have been tested in Mozambique and after being validated, a commercialization and expansion to the market is planned. The solar off-grid refrigeration system allows to immediately cool down food during harvest and provides continued product cooling at markets or central processing facilities. SunChillTM transforms 50 °C solar thermal energy into 10 °C refrigeration, doubling shelf life and creating access to nutritional fruits and vegetables. The innovation is also expected to create manufacturing and service-based employment. By the end of the project, Promethean sold over 600 units, enabling 25,000 dairy farmers to chill their milk without diesel generators and to get their milk to the market safely. '''<span class="link3">[[SunChill: Solar Cooling for Horticultural Preservation|Read more...]]</span>'''
 == <span style="color:#00A3AD">Solar Milk Cooling with Insulated Milk Cans</span><br/> ==
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 The FAO Report “How Access to Energy can Influence Food Losses” highlights the crucial interlinkages between access to energy and food losses in developing countries. It identifies the main stages of the food value chain where increasing access to energy can play a dominant role in reducing food losses directly, by making food processing possible, as well as indirectly by acting as the main enabling factor affecting the rate at which cooling technologies are adopted.&nbsp; It outlines low cost and off-grid post-harvest technologies such as cooling and solar drying that can be made available in developing countries. Most importantly, it assesses the technical and economic feasibility since access to capital can be a significant barrier hindering its implementation in the developing world.&nbsp;'''<span lang="en-gb">[http://www.fao.org/3/a-i6626e.pdf Read more...]</span>'''
 [[Category:Cooling]]

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 The FAO Report “How Access to Energy can Influence Food Losses” highlights the crucial interlinkages between access to energy and food losses in developing countries. It identifies the main stages of the food value chain where increasing access to energy can play a dominant role in reducing food losses directly, by making food processing possible, as well as indirectly by acting as the main enabling factor affecting the rate at which cooling technologies are adopted.&nbsp; It outlines low cost and off-grid post-harvest technologies such as cooling and solar drying that can be made available in developing countries. Most importantly, it assesses the technical and economic feasibility since access to capital can be a significant barrier hindering its implementation in the developing world.&nbsp;'''<span lang="en-gb">[http://www.fao.org/3/a-i6626e.pdf Read more...]</span>'''
 [[Category:Powering_Agriculture]]

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 == <span style="color:#00A3AD">DIY Solar Cooling</span><br/> ==
-The University of Hohenheim developed an approach that allows entrepreneurs, engineers, etc. in the Global South to assemble their own solar cooling systems, adapted to the local context and needs. The vendors and manufacturers&nbsp;of these simple but effective systems only need to import one piece while all other material can be obtained from the domestic market - making these systems much more cost-effective than comparable refrigeration systems that are wholly imported from abroad. '''[[Do It Yourself - Solar Cooling Units|Read more ...]]'''<br/>
+The University of Hohenheim developed an approach that allows entrepreneurs, engineers, etc. in the Global South to assemble their own solar cooling systems, adapted to the local context and needs. The vendors and manufacturers&nbsp;of these simple but effective systems only need to import one piece while all other material can be obtained from the domestic market - making these systems much more cost-effective than comparable refrigeration systems that are wholly imported from abroad. '''<span class="link3">[[Do It Yourself - Solar Cooling Units|Read more ...]]</span>'''<br/>
 = <span style="color:#00A3AD">Case Studies</span><br/> =

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 = Technologies<br/> =
-The rising demand for cooling equipment in the Global South reveals the need to find clean energy solutions, as these can provide access to cooling technologies in off-grid regions, but also enhance environmental protection. Traditional off-grid approaches, like evaporative cooling, combined with new technologies that run on renewable energy and use environmentally friendly alternatives, present climate-friendly and affordable solutions.<br/>'''Evaporative cooling '''uses the cooling effect released during evaporation. It can be applied as a cooling technology by placing a clay pot within another clay pot, with a layer of wet sand in-between to provide water for evaporation. It can also be built as a large evaporative cooling chamber using brick walls with wet sand between each one and a straw and wood cover on top. As the device allows keeping temperatures low and humidity high, it’s particularly effective for storing vegetables. [[Evaporative Cooling Devices|Read more…]]<br/>'''Green Cooling''' approaches involve the use of natural refrigerants. In contrast to artificial refrigerants CFCs, HCFCs and HFCs, natural refrigerants are substances occurring in nature, including CO2, ammonia, hydrocarbons, air and water. Maximizing energy efficiency is another green cooling strategy, fostering a sustainable approach to private and commercial energy consumption, by including, for example, renewable energies. [[Cooling|Read more…]]<br/>'''Pre-cooling''' is the rapid removal of field heat shortly after crop harvest. It is one simple approach that reduces energetic consumption for cooling and enhances shelf-life afterwards. Due to biological factors, the methods and importance of pre-cooling vary among crops. Methods include shade, air cooling, water cooling, ice cooling and vacuum cooling. [[Pre-cooling of Agricultural Products|Read more…]]<br/>Among green cooling strategies, the '''Solar Ice Maker''' is one implementation example. Using solar energy to feed a refrigeration system where water can be frozen and used in refrigeration devices, this technology has different kinds of uses: it can be utilized for milk chilling, cooling down vegetables during harvest, and much more. Examples of different value chains where solar ice making devices have been employed are listed further below under Case Studies.<br/>Another cooling example that involves ice is the'''Water Chiller'''. Using a renewable energy source to freeze water, it creates cold air that is blown to a storage room for commodities like vegetables. [[:File:Techsheet A3 solar ice maker V3.0.pdf|Read more…]]<br/>
+The rising demand for cooling equipment in the Global South reveals the need to find clean energy solutions, as these can provide access to cooling technologies in off-grid regions, but also enhance environmental protection. Traditional off-grid approaches, like evaporative cooling, combined with new technologies that run on renewable energy and use environmentally friendly alternatives, present climate-friendly and affordable solutions.<br/>'''Evaporative cooling '''uses the cooling effect released during evaporation. It can be applied as a cooling technology by placing a clay pot within another clay pot, with a layer of wet sand in-between to provide water for evaporation. It can also be built as a large evaporative cooling chamber using brick walls with wet sand between each one and a straw and wood cover on top. As the device allows keeping temperatures low and humidity high, it’s particularly effective for storing vegetables. [[Evaporative Cooling Devices|Read more…]]<br/>'''Green Cooling''' approaches involve the use of natural refrigerants. In contrast to artificial refrigerants CFCs, HCFCs and HFCs, natural refrigerants are substances occurring in nature, including CO2, ammonia, hydrocarbons, air and water. Maximizing energy efficiency is another green cooling strategy, fostering a sustainable approach to private and commercial energy consumption, by including, for example, renewable energies. [[Cooling|Read more…]]<br/>'''Pre-cooling''' is the rapid removal of field heat shortly after crop harvest. It is one simple approach that reduces energetic consumption for cooling and enhances shelf-life afterwards. Due to biological factors, the methods and importance of pre-cooling vary among crops. Methods include shade, air cooling, water cooling, ice cooling and vacuum cooling. [[Pre-cooling of Agricultural Products|Read more…]]<br/>Among green cooling strategies, the '''Solar Ice Maker''' is one implementation example. Using solar energy to feed a refrigeration system where water can be frozen and used in refrigeration devices, this technology has different kinds of uses: it can be utilized for milk chilling, cooling down vegetables during harvest, and much more. Examples of different value chains where solar ice making devices have been employed are listed further below under Case Studies.<br/>Another cooling example that involves ice is the '''Water Chiller'''. Using a renewable energy source to freeze water, it creates cold air that is blown to a storage room for commodities like vegetables. [[:File:Techsheet A3 solar ice maker V3.0.pdf|Read more…]]<br/>
 == Cold Storage of Agricultural Products ==
 Cold storage facilities are crucial to minimize post-harvest losses; however, losses occur at every step in the post-harvest cycle, and thus cold storages cannot be considered as independent solutions to prevent post-harvest spoilage but as one component that needs to be integrated in a cold chain network from the point of harvest to the point of purchase by the end consumer. During the different stages in the post-harvest cycle, temperature control and the adequate handling of the produce are crucial to minimize post-harvest losses. [[Cold Storage of Agricultural Products|Read more…]]<br/>
 = Actors & Innovations =