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  2. Head gasket - Wikipedia

    en.wikipedia.org/wiki/Head_gasket

    The former may be the presence of foam (caused by hydrocarbons) in the coolant expansion tank. Coolant leaking into the oil system may result in a mayonnaise- or milkshake-like substance in the oil, often to be seen on the dipstick, or oil filler cap. However, the presence of this substance is not conclusive proof of head gasket failure, since ...

  3. Nuclear reactor coolant - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_coolant

    A nuclear reactor coolant is a coolant in a nuclear reactor used to remove heat from the nuclear reactor core and transfer it to electrical generators and the environment. Frequently, a chain of two coolant loops are used because the primary coolant loop takes on short-term radioactivity from the reactor.

  4. Antifreeze - Wikipedia

    en.wikipedia.org/wiki/Antifreeze

    Proper engine coolant and a pressurized coolant system obviate these shortcomings of water. With proper antifreeze, a wide temperature range can be tolerated by the engine coolant, such as −34 °F (−37 °C) to +265 °F (129 °C) for 50% (by volume) propylene glycol diluted with distilled water and a 15 psi pressurized coolant system.

  5. Organic nuclear reactor - Wikipedia

    en.wikipedia.org/wiki/Organic_nuclear_reactor

    A more significant problem was found in experimental devices; the high-energy neutrons given off as part of the nuclear reactions have much greater energy than the chemical bonds in the coolant, and they break the hydrocarbons apart. This results in the release of hydrogen and various shorter-chain hydrocarbons. The polymerization of the ...

  6. Headspace gas chromatography for dissolved gas measurement

    en.wikipedia.org/wiki/Headspace_Gas...

    One of the most widely used methods for headspace analysis is described by the United States Environmental Protection Agency (USEPA). Originally developed by the R.S. Kerr USEPA Laboratory in Ada, Oklahoma as a "high quality, defendable, and documented way to measure" methane, ethane, and ethene, [7] [8] RSKSOP-175 is a standard operating procedure (SOP) and an unofficial method employed by ...

  7. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    The R- numbering system was developed by DuPont (which owned the Freon trademark), and systematically identifies the molecular structure of refrigerants made with a single halogenated hydrocarbon. ASHRAE has since set guidelines for the numbering system as follows: [85] R-X 1 X 2 X 3 X 4. X 1 = Number of unsaturated carbon-carbon bonds (omit if ...

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