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2. Quantum heat engines and refrigerators - Wikipedia

   en.wikipedia.org/wiki/Quantum_heat_engines_and...

   Externally driven two-level, [24] three level [25] four-level [26] [27] and coupled harmonic oscillators [28] have been studied. The periodic driving splits the energy level structure of the working medium. This splitting allows the two level engine to couple selectively to the hot and cold baths and produce power.

3. Solar-powered refrigerator - Wikipedia

   en.wikipedia.org/wiki/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.

4. Whirlpool Corporation - Wikipedia

   en.wikipedia.org/wiki/Whirlpool_Corporation

   Whirlpool Corporation is an American multinational manufacturer and marketer of home appliances headquartered in Benton Charter Township, Michigan, United States. [2] In 2023, the Fortune 500 company had an annual revenue of approximately $19 billion in sales, around 59,000 employees, and more than 55 manufacturing and technology research centers globally.

5. Gifts at Walmart that will arrive by Christmas - AOL

   www.aol.com/lifestyle/gifts-at-walmart-that-will...

   This one by Anker has over 20,000mAh power reserve and provides over four full charges for most smartphones and nearly two full charges for tablets. $40 at Walmart Yogasleep

6. Best Kohl's Black Friday deals - AOL

   www.aol.com/lifestyle/shop-the-best-black-friday...

   We have entered prime baking season, and at 4.5 quarts, this top-seller can hold enough dough to make up to eight dozen cookies at a time (while not taking up much precious kitchen real estate).

7. These Lee trousers are only $20: 'Fabulous fit, fabulous feel'

   www.aol.com/lifestyle/these-lee-trousers-are...

   The trouser pants are currently a sweet 53% off in classic black, bringing the price down from $53 to an incredible $20. Similar brand-name business-casual-style trousers can run you $70 or more ...