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  2. Liquefied petroleum gas - Wikipedia

    en.wikipedia.org/wiki/Liquefied_petroleum_gas

    LPG is composed mainly of propane and butane, while natural gas is composed of the lighter methane and ethane. LPG, vaporised and at atmospheric pressure, has a higher calorific value (46 MJ/m 3 equivalent to 12.8 kWh/m 3 ) than natural gas (methane) (38 MJ/m 3 equivalent to 10.6 kWh/m 3 ), which means that LPG cannot simply be substituted for ...

  3. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    When DHW is used, a combination boiler stops pumping water to the heating circuit and diverts all the boiler's power to heating DHW. Some combis have small internal water storage vessels combining the energy of the stored water and the gas or oil burner to give faster DHW at the taps or to increase the DHW flow rate.

  4. 1946 Greenville propane explosion - Wikipedia

    en.wikipedia.org/wiki/1946_Greenville_propane...

    Haynie toured several industrial plants where Superior Gas Corporation had installed large propane systems, and was satisfied with their efficiency. Superior Gas installed a 500-US-gallon (1.9 m 3) propane tank at Haynie's personal residence several months before installing a 6,500-US-gallon (25 m 3) system at Ideal Laundry in November, 1946.

  5. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.

  6. Substitute natural gas - Wikipedia

    en.wikipedia.org/wiki/Substitute_natural_gas

    Substitute natural gas (SNG), or synthetic natural gas, is a fuel gas (predominantly methane, CH 4) that can be produced from fossil fuels such as lignite coal, oil shale, or from biofuels (when it is named bio-SNG) or using electricity with power-to-gas systems.

  7. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric power, mechanical work, light (radiation), or heat. The resulting value, η (eta), ranges between 0 and 1. [1] [2] [3]

  8. Natural gas vehicle - Wikipedia

    en.wikipedia.org/wiki/Natural_gas_vehicle

    Yet, NGV was very slow to take off due to cheaper LPG fuel, a pre-existing LPG fleet, and the low conversion cost of local LPG conversion shops compared to factory-installed CNG or conversion. A significant effort was made when the state-controlled oil company PTT PCL built a network of natural gas refueling stations. The cost of subsidy was ...

  9. Cogeneration - Wikipedia

    en.wikipedia.org/wiki/Cogeneration

    Because boiler feed water from cogeneration plants has much lower return rates than 100% condensing power plants, industries usually have to treat proportionately more boiler make up water. Boiler feed water must be completely oxygen free and de-mineralized, and the higher the pressure the more critical the level of purity of the feed water. [5]

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