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2. Heat pump and refrigeration cycle - Wikipedia

   en.wikipedia.org/wiki/Heat_pump_and...

   Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems. [1] A heat pump is a mechanical system that transmits heat from one location (the "source") at a certain temperature to another location (the "sink" or "heat sink") at a higher temperature ...

3. Refrigerator - Wikipedia

   en.wikipedia.org/wiki/Refrigerator

   Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]

4. Absorption refrigerator - Wikipedia

   en.wikipedia.org/wiki/Absorption_refrigerator

   The refrigerator is a small unit placed over a campfire, that can later be used to cool 15 litres (3.3 imp gal; 4.0 US gal) of water to just above freezing for 24 hours in a 30 °C (86 °F) environment. [4] The concept was similar to an early refrigeration device known as an Icyball.

5. Refrigeration - Wikipedia

   en.wikipedia.org/wiki/Refrigeration

   Commercial refrigeration. Refrigeration is any of various types of cooling of a space, substance, or system to lower and/or maintain its temperature below the ambient one (while the removed heat is ejected to a place of higher temperature). [1] [2] Refrigeration is an artificial, or human-made, cooling method. [1] [2]

6. AOL Help

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   Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

7. 'Shocking and unconscionable': Joe Biden mourns victims of ...

   www.aol.com/news/shocking-unconscionable-joe...

   Biden noted steps his administration has taken to combat gun violence, including the passage of the most significant gun-safety legislation in nearly 30 years. “But more is needed,” he said ...

8. Solar-powered refrigerator - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_refrigerator

   Solar-powered refrigerators are characterized by thick insulation and the use of a DC (not AC) compressor. Traditionally solar-powered refrigerators and vaccine coolers use a combination of solar panels and lead batteries to store energy for cloudy days and at night in the absence of sunlight to keep their contents cool.

9. The 3 Most Overpriced Cities in America, According to Gen Z ...

   www.aol.com/3-most-overpriced-cities-america...

   The cozy slippers that are 'just like UGGs but at a great price' are down to $24