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  2. Phase-out of fossil fuel boilers - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_fossil_fuel...

    Ban on new gas furnaces and water heaters. 2030 California Air Resources Board writing rules to implement. [6] Denmark Convert all 400,000 gas boilers to district heating and heat pumps 2029 Use obligation and duty for renewable energy France Oil and gas boilers banned in new buildings 2023 Germany Ban on coal and oil boilers in existing buildings

  3. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Morphology problem. How are neural tissues formed in specific ways in different species? The formation of neural tissues in a certain way is necessary for the formation of certain goal-directed behavior for certain species.

  4. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Heating appliances that use steam or hot water as the fluid are normally referred to as a residential steam boilers or residential hot water boilers. The most common fuel source for modern furnaces in North America and much of Europe is natural gas; other common fuel sources include LPG (liquefied petroleum gas), fuel oil, wood and in rare ...

  5. Boiler - Wikipedia

    en.wikipedia.org/wiki/Boiler

    Early boilers provided this stream of air, or draught, through the natural action of convection in a chimney connected to the exhaust of the combustion chamber. Since the heated flue gas is less dense than the ambient air surrounding the boiler, the flue gas rises in the chimney, pulling denser, fresh air into the combustion chamber. [citation ...

  6. 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.

  7. Heating plant - Wikipedia

    en.wikipedia.org/wiki/Heating_plant

    The plant also hosts all of the boiler auxiliaries such as water treatment equipment, air handling, fuel handling, controls, instrument air, and various other plant systems which support the production of steam. The heating plant can use different fuels: Natural gas; Heating oil; Biomass; Coal; Refuse

  8. Glossary of boiler terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_boiler_terms

    erosion of a boiler's plates from the internal water space, particularly where there is a step inside the shell. This was a problem for early boilers made from lapped plates rather than butted plates, and gave rise to many boiler explosions. In later years it was a problem for the non-circular water drums of Yarrow boilers. Handhole

  9. History of manufactured fuel gases - Wikipedia

    en.wikipedia.org/wiki/History_of_manufactured...

    Injunctions both preliminary and permanent could and were often issued in cases involving gas works. For example, the ill reputation of gas-works became so well known that in City of Cleveland vs. Citizens' Gas Light Co., 20 N. J. Eq. 201, a court went so far as to enjoin a future gas-works not yet even built – preventing it from causing ...