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Solar-powered refrigerator
A solar-powered refrigerator is a refrigerator which runs on energy directly provided by sun, and may include photovoltaic or solar thermal energy.
Solar-powered refrigerators are able to keep perishable goods such as meat and dairy cool in hot climates, and are used to keep much needed vaccines at their appropriate temperature to avoid spoilage.
Solar-powered refrigerators may be most commonly used in the developing world to help mitigate poverty and climate change.
== Rationale ==
There is environmental concern regarding conventional refrigeration technologies including contribution to ozone layer depletion and global warming. Refrigerators which contain ozone depleting and global warming substances such as chlorofluorocarbons (CFCs), in their insulation foam or their refrigerant cycle, are the most harmful. After CFCs were banned in the 1980s, they were replaced with substances such as hydrochlorofluorocarbons (HCFCs), which are ozone-depleting substances and hydrofluorocarbons (HFCs). Both are environmentally destructive as potential global warming chemicals. If a conventional refrigerator is inefficient or used inefficiently, it will also contribute more to global warming than a highly efficient refrigerator. The use of solar energy to power refrigeration strives to minimize the negative impacts refrigerators have on the environment.〔(UNEP 2005. SolarChill: the vaccine cooler powered by nature. Paris, France: UNEP Division of Technology, Industry and Economics, 1-16. Retrieved January 29, 2005 )〕〔(Pedersen, PH. Maté J. 2006. SolarChill vaccine cooler and refrigerator: a breakthrough technology. Industria Formazione. Special International Issue: Refrigeration and Air Conditioning.No. 300, Suppl. 1(No. 6–2006):17–19 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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