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  2. Turndown ratio - Wikipedia

    en.wikipedia.org/wiki/Turndown_ratio

    If the boiler is of the high efficiency condensing type, high turndown ratios are feasible and the higher the turndown ratio, the more efficient it will be. Every time a gas/oil boiler stops, it has to be "purged" with cold air to remove any combustible gases that may have accumulated in the boiler before restarting.

  3. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    Boilers have a turndown ratio which is the ratio of the maximum power output to the minimum power output for which combustion can be maintained. If the control system determines that the demand falls below the minimum power output, then the boiler will cycle off until the water temperature has fallen, and then will reignite and heat the water.

  4. Category:Boilers - Wikipedia

    en.wikipedia.org/wiki/Category:Boilers

    Pages in category "Boilers" ... Three-drum boiler; Turndown ratio; V. Vertical boiler; W. Wagon boiler; Water cooker; Water heating; Water-tube boiler; Wellman Group ...

  5. 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

  6. NTU method - Wikipedia

    en.wikipedia.org/wiki/NTU_Method

    Here, represents the mass ratio of gas 'x' (meaning mass of gas 'x' relative to the mass of all other non-'x' gas mass) and is the partial pressure of gas 'x'. Using the ideal gas formulation for the mass ratio gives the following definition for the specific mass capacity:

  7. ISASMELT - Wikipedia

    en.wikipedia.org/wiki/ISASMELT

    High turn-down ratio: the feed rate to a single ISASMELT installation can easily be scaled up or down, depending on the availability of concentrate and the needs of the smelter Low feed carry over: ISASMELT furnaces typically lose about 1% of the feed as carry-over with the waste gas, meaning that there is less material that needs to be ...

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  9. Boiler - Wikipedia

    en.wikipedia.org/wiki/Boiler

    A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, [1] [page needed] [2] [page needed] including water heating, central heating, boiler-based power generation, cooking, and sanitation.