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## ﻿how much is the gas steam boiler exhaust temperature

• ### Boiler Economizer: Boost Your Boiler's Performance I RasMech

Oct 22, 2019 · The AFUE is the ratio of how much heat the boiler puts out in a year compared to how much gas it consumes in that same time period. If the AFUE of your gas boiler is 90%, it means that 90% of the gas it consumes becomes heat for your home. The remaining 10% is sent through the boiler chimney as exhaust. As of 2012, all gas boilers manufactured in the U.S. must have an AFUE of at least 80% for steam boilers

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• ### Combustion Efficiency and Excess Air

The low exhaust gas temperature from gas turbines, typically ranging from 900 to 1050F, generates less steam on unit gas mass basis in the HRSG evaporator compared to a package boiler.

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• ### Exhaust Gas Boilers And Economisers for Marine Machinery

Mar 17, 2015 · Temperature = 701.7 °C [Steam Property Calculator] => Specific Enthalpy = 1,680.5 btu/lbm; Steam Energy Flow = Specific Enthalpy * Mass Flow [ Steam Energy Flow = 158,859 = 1,680.5 btu/lbm * 89.6 klb/hr] Step 2: Determine Feedwater Properties and Mass Flow The feedwater flow rate can be calculated from steam mass flow and blowdown rate

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• ### How Much Gas Does Your Boiler Consume? | 128 Plumbing

and on the heating surface of the Exhaust Gas Boilers. The reasonable optimal steam production of Exhaust Gas Boilerswhere no economizers are incorporated are consequently reached at a steam pressure of 3-4 bar (saturated temperature 143-151°C). In practice it is found that the pinch temperature shall be kept at minimum 25°C as a lower

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• ### Options for Improving the Efficiency of Heat Recovery

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

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• ### Fuels - Exhaust Temperatures - Engineering ToolBox

hot water - Why does my boiler vent steam? - Home

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• ### Steam Calculators: Boiler Calculator

The biggest source of 150 LB steam is the exhaust from HP-150 turbines. Turbines that run this way are very energy efficient, as long as somewhere else in the facility there is an end use for the exhaust steam that takes advantage of the heat of vaporization. 150 PSIG steam operates at about 365F.

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