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2. Refrigerator - Wikipedia

   en.wikipedia.org/wiki/Refrigerator

   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. A vapor compression cycle is used in most household refrigerators, refrigerator–freezers and freezers.

3. Ice spike - Wikipedia

   en.wikipedia.org/wiki/Ice_spike

   Small ice spikes can be formed artificially on ice cubes produced in domestic refrigerators; using distilled water in plastic ice cube trays. The formation of the spike is similar to that of the naturally occurring spike in that the expansion of interior water and, the reduction of volume in the interior of the cube, increase the pressure on ...

4. Coefficient of performance - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_performance

   The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics.

5. Vaccine storage - Wikipedia

   en.wikipedia.org/wiki/Vaccine_storage

   These refrigerators or freezers are specifically designed for the storage of biologics, including vaccines. These units differ from standard household-grade units since it has microprocessor -based temperature control with a digital temperature sensor ( thermistor , thermocouple , or resistance temperature detector), and fan-forced air ...

6. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Heaters are appliances whose purpose is to generate heat (i.e. warmth) for the building. This can be done via central heating. Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building.

7. Ford 4.4 Turbo Diesel - Wikipedia

   en.wikipedia.org/wiki/Ford_4.4_Turbo_Diesel

   The Ford 4.4 TD is a diesel V8 engine developed and built by Ford Motor Company.It has a power output of 340 PS (250 kW; 335 hp) and 700 N⋅m (516 lb⋅ft) of torque. As with the other AJDs, it has a compacted graphite iron block that reduces weight while increasing engine block strengt