enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Sheldon coin grading scale - Wikipedia

    en.wikipedia.org/wiki/Sheldon_coin_grading_scale

    MS70 The "perfect coin", as minted. Has no trace of wear, handling, scratches or contact with other coins from a (5x) magnification. Coins in this grade are almost non-existent in older coins with very few examples known. Copper coins are bright with full original color and luster. Eye appeal is exceptional.

  3. Fuel gas - Wikipedia

    en.wikipedia.org/wiki/Fuel_gas

    Fuel gas is widely used by industrial, commercial and domestic users. Industry uses fuel gas for heating furnaces, kilns, boilers and ovens and for space heating and drying . The electricity industry uses fuel gas to power gas turbines to generate electricity. The specification of fuel gas for gas turbines may be quite stringent. [5]

  4. Package boiler - Wikipedia

    en.wikipedia.org/wiki/Package_boiler

    The large difference between the flame temperature and the heat exchanger discards most of the available entropy. Discarding most of the entropy caps the thermodynamic efficiency below the range needed to make a low pressure boiler suitable for a co-generation plants even when the available capacity is adequate for the application.

  5. Natural gasoline - Wikipedia

    en.wikipedia.org/wiki/Natural_gasoline

    Natural gasoline is a liquid hydrocarbon mixture condensed from natural gas, similar to common gasoline (petrol) derived from petroleum.. The chemical composition of natural gasoline is mostly five- and six-carbon alkanes (pentanes and hexanes) with smaller amounts of alkanes with longer chains. [1]

  6. Coleman fuel - Wikipedia

    en.wikipedia.org/wiki/Coleman_fuel

    The white gas sold today is a similar product but is produced at refineries and has a very low benzene content, benzene being a human carcinogen. [ 5 ] Though Coleman fuel has an octane rating of 50 to 55 and a flammability similar to gasoline, it has none of the additives found in modern gasoline .

  7. Methylacetylene-propadiene gas - Wikipedia

    en.wikipedia.org/wiki/Methylacetylene-propadiene_gas

    Methylacetylene-propadiene (MPS) gas is a type of fuel gas used in oxy-fuel welding and cutting torches, comprising a mixture of several gases. MPS gases

  8. Propane, butane, and LPG container valve connections

    en.wikipedia.org/wiki/Propane,_butane,_and_LPG...

    LPG distribution in Colombia. LPG distribution in Suriname. LPG distribution in Brazil. LPG distribution in Ecuador. Several types of valve connections for propane, butane, and LPG containers exist for transport and storage, sometimes with overlapping usage and applications, and there are major differences in usage between different countries.

  9. Pulverized coal-fired boiler - Wikipedia

    en.wikipedia.org/wiki/Pulverized_coal-fired_boiler

    Coal is ground to the size of a fine grain, mixed with air and burned in the flue gas flow. Biomass and other materials can also be added to the mixture. Coal contains mineral matter which is converted to ash during combustion. The ash is removed as bottom ash and fly ash. The bottom ash is removed at the furnace bottom.