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  2. Cogeneration - Wikipedia

    en.wikipedia.org/wiki/Cogeneration

    Gas turbine CHP plants using the waste heat in the flue gas of gas turbines. The fuel used is typically natural gas. Gas engine CHP plants use a reciprocating gas engine, which is generally more competitive than a gas turbine up to about 5 MW. The gaseous fuel used is normally natural gas. These plants are generally manufactured as fully ...

  3. Chemical weapons in World War I - Wikipedia

    en.wikipedia.org/wiki/Chemical_weapons_in_World...

    Chemical weapons have been used in at least a dozen wars since the end of the First World War; [61] they were not used in combat on a large scale until Iraq used mustard gas and the more deadly nerve agents in the Halabja chemical attack near the end of the eight-year Iran–Iraq War. The full conflict's use of such weaponry killed around ...

  4. Compost heater - Wikipedia

    en.wikipedia.org/wiki/Compost_heater

    The gas was distilled by washing and compressing it through small stones in water. Pain used the gas for cooking and producing electricity. He also fueled a light van. Pain estimated that 10 kilograms (22 pounds) of brushwood would supply the gas equivalent of one litre (0.22 imp gal; 0.26 US gal). of petrol.

  5. Chlorine - Wikipedia

    en.wikipedia.org/wiki/Chlorine

    Chlorine is a toxic gas that attacks the respiratory system, eyes, and skin. [124] Because it is denser than air, it tends to accumulate at the bottom of poorly ventilated spaces. Chlorine gas is a strong oxidizer, which may react with flammable materials. [125] [126]

  6. Gas constant - Wikipedia

    en.wikipedia.org/wiki/Gas_constant

    The molar gas constant (also known as the gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R. It is the molar equivalent to the Boltzmann constant , expressed in units of energy per temperature increment per amount of substance , rather than energy per temperature increment per particle .

  7. Crankcase heater - Wikipedia

    en.wikipedia.org/wiki/Crankcase_heater

    The crankcase heater keeps refrigerant at a temperature higher than the coldest part of the system. A crankcase heater generally has the same electrical symbol as a resistor because it converts electricity directly into heat via electrical resistance. The resistance in the heater coil determines the heat it produces when voltage is applied. [1]

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