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  2. Unplug These Appliances That Hike Up Your Electricity Bill - AOL

    www.aol.com/unplug-appliances-hike-electricity...

    Refrigerator Average Wattage: 225 watts Cost per Hour: $0.03 ... ($0.0072 to be specific) while a 150-watt bulb will run you about two cents an hour.However, the better question might be "why are ...

  3. Cooling capacity - Wikipedia

    en.wikipedia.org/wiki/Cooling_capacity

    The SI unit is watt (W). Another unit common in non-metric regions or sectors is the ton of refrigeration , which describes the amount of water at freezing temperature that can be frozen in 24 hours, equivalent to 3.5 kW or 12,000 BTU / h .

  4. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    In newer designs, the timer only runs while the compressor runs, so the longer the refrigerator door is closed, the less time the heater will run for and the more energy is saved. A defrost thermostat opens the heater circuit when the evaporator temperature rises above a preset temperature, 40°F (5°C) or more, thereby preventing excessive ...

  5. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    Freezer units are used in households as well as in industry and commerce. Commercial refrigerator and freezer units were in use for almost 40 years prior to the common home models. The freezer-over-refrigerator style had been the basic style since the 1940s, until modern, side-by-side refrigerators broke the trend.

  6. 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. [2]

  7. Defrosting (refrigeration) - Wikipedia

    en.wikipedia.org/wiki/Defrosting_(refrigeration)

    Defrosting a freezer with an improvised water collection method. In refrigerators, defrosting (or thawing) is the removal of frost and ice. A defrosting procedure is generally performed periodically on refrigerators and freezers to maintain their operating efficiency.

  8. Explainer-Who are the immigrants who could be targeted in ...

    www.aol.com/news/explainer-immigrants-could...

    how many americans live in ‘mixed-status households’? The immigration advocacy group FWD.us projected that there would be 14.5 million immigrants in the U.S. illegally by January 2025, up from ...

  9. ULT freezer - Wikipedia

    en.wikipedia.org/wiki/ULT_freezer

    An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.