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  • specifying high-temperature hot-water boilers and systems

    Specifying high-temperature hot-water boilers and systems

    As it relates to steam and per Section I of ASME, a power boiler is “a boiler in which steam or another vapor is generated at a pressure of more than 15 psig (100 kPa) for use external to itself,” and a heat-recovery steam generator (HRSG) is “a boiler that has as its principal source of thermal energy a hot gas stream having high-ramp rates and temperatures such as the exhaust of a gas turbine.” HRSGs are …

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  • fossil fuel fired boiler air and gas path

    Fossil Fuel Fired Boiler Air and Gas Path

     · PDF file

    Exhaust Temperature Control 3.4.1. Recirculation 3.4.2. Bypassing 3.4.3. Preheating 4. Sootblowers 4.1. Ash and Slag . UNESCO – EOLSS SAMPLE CHAPTERS THERMAL POWER PLANTS – Vol. II - Fossil Fuel Fired Boiler Air and Gas Path - Chaplin R.A. ©Encyclopedia of Life Support Systems (EOLSS) 4.2. Sootblowing Media 4.3. Sootblower Types 4.3.1. Short Retractable Furnace Wall …

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  • exhaust temperature - an overview | sciencedirect topics

    Exhaust Temperature - an overview | ScienceDirect Topics

    Fig. 4.11 takes exhaust gas temperature up to 1650°C. So much high-temperature energy is now available to evaporate, superheat, and reheat steam that some high-level energy must be reserved to fully economize all of the steam being generated. The solution to this problem is to add feedwater heaters as shown in Fig. 4.12.

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  • gas turbine exhaust temperature control curve | automation & …

    Gas Turbine Exhaust Temperature Control Curve | Automation & …

    03-01-2009 · And the firing temperature represents the combustion gas temperatures that are being experienced by the hot gas path components (combustion liners, transition pieces, turbine nozzles, turbine buckets, exhaust components). So, it's important to limit and control this temperature to maximize parts life while still producing as much power as possible. The calculations include things …

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  • fuels exhaust temperatures - engineering toolbox

    Fuels Exhaust Temperatures - Engineering ToolBox

    Exhaust Temperature (o F) (o C) Chemical Oxidation: 1350 - 1475: 730 - 800: Annealing furnace: 1100 - 1200: 590 - 650: Fluidized-bed combustion: 1600 - 1800 : 870 - 980: Natural-gas fired heating appliance with draft hood: 360: 182: Liquefied-petroleum gas-fired heating appliance with draft hood: 360: 182: Gas-fired heating appliance, no draft hood: 460: 238: Glass melting furnace: 1200 - 1600: 650 - 870: Oil …

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  • boiler components - marine engineering

    Boiler Components - Marine Engineering

    For the steam plant these equate to boiler outlet temperature and the exhaust temperature of the turbine. Hence, to increase final temperatures at boiler outlet conditions either; the boiler pressure can be increased, or the degree of superheat can be increased. Boiler pressure increase is ultimately limited by the scantling requirements,more importantly however, the energy stored within the steam is little …

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  • boiler efficiency guide - cleaver-brooks

    BOILER EFFICIENCY GUIDE - Cleaver-Brooks

     · PDF file

    heat to the water in the boiler. A 4-pass design provides four opportunities for heat transfer. The stack temperature of a 4-pass boiler will be lower than the stack temperature of a 2 or 3-pass boiler, of the same basic design, operating under similar conditions. Because of this fact, the 4-pass will have higher efficiency and lower fuel cost

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