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  2. Pulse tube refrigerator - Wikipedia

    en.wikipedia.org/wiki/Pulse_tube_refrigerator

    In most coolers gas is compressed and expanded periodically. Well-known coolers such as the Stirling engine coolers and the popular Gifford-McMahon coolers have a displacer that ensures that the cooling (due to expansion) takes place in a different region of the machine than the heating (due to compression). Due to its clever design, the PTR ...

  3. Absorption refrigerator - Wikipedia

    en.wikipedia.org/wiki/Absorption_refrigerator

    Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).

  4. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    bell adapters which are like mechanical joint adapters but contain a stainless steel backup ring to maintain a positive seal against the mating flange [9]: 347 flange adapters which attach to a polyethylene pipe with butt fusion to stiffen a junction and allow another flanged pipe or fitting to be bolted on [ 9 ] : 341

  5. Waste heat recovery unit - Wikipedia

    en.wikipedia.org/wiki/Waste_heat_recovery_unit

    A regenerative thermal oxidizer (RTO) is an example of a waste heat recovery unit that utilizes a regenerative process. A waste heat recovery unit ( WHRU ) is an energy recovery heat exchanger that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency.

  6. 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]

  7. Refrigerator death - Wikipedia

    en.wikipedia.org/wiki/Refrigerator_death

    The first modern electrical refrigerator to see widespread use was the General Electric "Monitor-Top" refrigerator, introduced in 1927, and refrigerators became common in the United States in the 1930s. Regardless of the cooling technology, doors on the units were sealed shut using a mechanical latch. [3]

  8. Cooler - Wikipedia

    en.wikipedia.org/wiki/Cooler

    Most electric coolers have an undervoltage shutoff at around 10 or 10.5 volts to prevent this. Many come with power adapters, which use an electronic transformer to convert AC mains or line voltage down to 12 volts, with a lighter-like socket for the cooler's cord to plug in. Some also have a crossover-connection device to reverse the current ...

  9. Grease trap - Wikipedia

    en.wikipedia.org/wiki/Grease_trap

    Grease trap for greywater in Lima, Peru. A grease trap (also known as grease interceptor, grease recovery device, grease capsule and grease converter) is a plumbing device (a type of trap) designed to intercept most greases and solids before they enter a wastewater disposal system.