Boiler Flue Gas Temperature Calculation

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θrion Gas Fired Steam Boiler

Capacity:1-20t/h

Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.

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Gas(oil) Fired Integrated Hot Water Boiler

Capacity:0.7-14MW

Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.

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H6 Gas Fired Hot Water Boiler

Capacity:0.7-2.8Mw

Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.

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T7 Vacuum Hot Water Boilerr

Capacity:2.8-7.0Mw

Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.

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V6 Gas Fired Hot Water Boiler

Capacity:99Kw

Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.

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Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy

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  • flue gas temperature boiler Agent - socialpedagogy.co.uk

    The flue-gas temperature of a typical boiler could be anywhere in the range of 300 to 500 degrees Fahrenheit range. As a result, the extra oxygen could have entered the boiler at 70 degrees F and exit at 400 F. The extra oxygen reached this temperature by receiving fuel energy – in other words, fuel was purchased to heat the extra oxygen.Get Price

  • Flue Temperature - an overview | ScienceDirect Topics

    A flue gas analysis of a gas-fired boiler indicates that the CO 2 content is 8% with a gas flue temperature of 204°C (400°F). Determine the overall thermal efficiency of the boiler. Solution. By reading the monograph of Fig. 8.12, the combustion occurs with an excess air of 48% and excess O 2 of 7%. The overall boiler thermal efficiency is Get Price

  • (PDF) Boiler Calculations | Michael Dellon - Academia.edu

    Boiler type Heat loss per heat input of fuel Oil fired boiler 0,2 - 0,5 % Coal fired boiler, dry ash removal 3% Coal fired boiler, molten ash removal about 2 % Grate boiler 4-6 % Heat loss due to wasted heat in flue gases Flue gases leave the furnace in high temperature and thus they carry significant amount of energy away from boiler process.Get Price

  • Calculating Flue Gas Temperature

    Economiser. The flue gas temperatures at the boiler outlet are normally roughly 60K above the temperature of the product inside the steam boiler. At an operating pressure of 10 bar, which corresponds to a saturated steam temperature of 185°C, the flue gas temperature is therefore roughly 245°C. This corresponds to a flue gas loss of roughly 11%.Get Price

  • Power 101: Flue Gas Heat Recovery in Power Plants, Part I

    Apr 01, 2010 · The gross power output of a 642.18-MW, turbine cycle heat rate (HRcycle) of 7,467 Btu/kWh (ηcycle,gross = 45.69%), APH leakage of 10%, flue gas temperature at the boiler outlet of 680F, and coal Get Price

  • flue gas flow rate calculation of boiler – Industrial

    Feb 12, 2021 · Consider Boiler outlet flue gas temperature is 145 deg C & ambient temperature 30 deg C Heat loss due to formation of water from hydrogen in fuel = 9 X H2 X (584 + Specific heat of moisture (Cp) X (Tfg-Ta) = 9 X 0.0322 X (584 + 0.45 X (145-30)) = 184.24 kcl/kg % of heat loss = 184.24 X 100 / Coal GCV = 18424 / 4500 =4.09%Get Price

  • 15 Basic Steps in Boiler Design. Boiler design is the

    Oct 02, 2017 · From flue gas side pressure drop, gas temperature and total gas weight, calculate ID fan duty and size the fan Calculation of stack height Stack height is calculated based on the following criteriaGet Price

  • Improve Your Boiler's Combustion Efficiency

    A boiler operates for 8,000 hours per year and annually consumes 500,000 million Btu (MMBtu) of natural gas while producing 45,000 lb/hour of 150-psig steam. Stack gas measurements indicate an excess air level of 44.9% with a flue gas minus combustion air temperature of 400°F. From the table, the boiler combustion efficiency is 78.2% (E1).Get Price

  • Questions answers & calculation on Boiler draught & Chimney

    Jun 28, 2020 · 39-Calculate the mass of flue gas flowing through the Chimney when the draught produced is equal to 18 mmwc. Temperature of flue gas is 250 Deg C and ambient temperature is equal to 30 deg c. The flue gas formed per kg of fuel burnt are 15 …Get Price

  • Thermal Design of Economizer for Waste Heat Recovery Boiler

    idea is to extract maximum amount of heat from the flue gases and increase the heat pick up rate of the feed water outlet into the boiler. By assuming the additional bank of tubes, various heat transfer calculations are done and the reduction in the flue gas outlet temperature and increase inGet Price

  • 1. ENERGY PERFORMANCE ASSESSMENT OF BOILERS

    The following parameters need to be measured, as applicable for the computation of boiler effi-ciency and performance. a) Flue gas analysis 1. Percentage of CO 2 or O 2 in flue gas 2. Percentage of CO in flue gas 3. Temperature of flue gas b) Flow meter measurements for 1. Fuel 2. Steam 3. Feed water 4. Condensate water 5. Combustion airGet Price

  • Efficiency Calculations of Bagasse Fired Boiler on the

    Jul 11, 2015 · Minhas (1985) calculated the efficiency of a bagasse-Keywords: Bagasse, Boiler, Air heater, Economizer, fired boiler having a steam generating capacity of 35 Flue gases tons/hr whose super-heated steam pressure was 23 kg/cm2 and steam temperature 350 C.Get Price

  • 11.3 Chimney System Design - PTC

    Consider the analysis of a chimney system for an oil-fired 30 kW boiler (using No. 2 oil). Assume mean chimney gas temperature equal to 220 degC and an ambient temperature of 0 degC. (For properties and theory see ASHRAE 1996) CO2≔9 %CO2 in flue gases for no. 2 oilGet Price

  • boiler exhaust gas temperature – Industrial Boiler

    May 29, 2018 · Flue gas – Wikipedia Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator. … treated either by modifications to the combustion process to prevent their formation, or by high temperature or catalytic reaction with ammonia or Get Price

  • 15 Basic Steps in Boiler Design. Boiler design is the

    Oct 02, 2017 · From flue gas side pressure drop, gas temperature and total gas weight, calculate ID fan duty and size the fan Calculation of stack height Stack height is calculated based on the following criteriaGet Price

  • Power plant and calculations: Boiler calculations for

    1. Heat recovered (or delivered to the home): 80,000 Btu/hour C. Heat in the Flue Gas 1. Heat in the Flue Gas = 101,194.31 – 80,000 = 21,194.31 Btu/hour D. Component Gases In The Flue Gas (from combustion analysis or from a stack test) E. Flue …Get Price

  • The Heat Balance and Efficiency of Steam Boilers

    Heat loss with waste gases By reducing the temperature of waste gases by 22 degree cent it is possible to increase boiler efficiency by 1%. The exit temperature of waste gases depends on 21 feed water temperature at economizer inlet and and cold air temperature at air heater inlet. The exit temperature depends on the moistureGet Price

  • APPENDIX 1 MEASURING BOILER EFFICIENCY

    App 1-7 HHV is the higher heating value, hg is the enthalpy in Btu/lb of water vapour at 1 psi and the flue gas temperature (FGT) in °F, and hf is the enthalpy of water at the combustion air temperature (CAT) in °F. hg can be determined from steam tables or from the equation hg, Btu/lb = 1055 + (0.467 x FGT). hf can also be determined from steam tables, or from the simple …Get Price

  • Calc 1 - Boiler Efficiency.xls

    Fuel Temperature (Default = T ref) O F Flue Gas Constituents: (% by Volume) Flue Gas Constituents: (% by Volume) Fuel flow and heat input are not used to calculate boiler efficiency, but are necessary for calculation of air and gas flows. OR Get Price

  • Flue Gas Temperature and Heat in the Flue Gas Flow (Btu

    Technical advice on boiler combustion control - Reliable PlantGet Price

  • Flue Gas Waste Heat Boiler Thermal Efficiency Calculation

    1. q2-flue gas heat loss The exhaust heat loss is the heat loss caused by a part of the heat that is taken away by the smoke of the boiler. Its size is related to the amount of smoke, the smoke exhaust and the reference temperature and the sensible heat of the water vapor in the flue gas. q2 can be used as a simplified calculation formula: q2 Get Price

  • What is Boiler Efficiency? Boiler Efficiency Calculation

    The stack temperature and flue gas oxygen combinations are primary symbols of combustion efficiency. The combustion efficiency of a boiler signifies the burner's capacity to burn fuel. It has two parameters that determine the burner efficiency: unburnt fuel supplies in the exhaust and excess oxygen levels in the exhaust.Get Price

  • Improving Energy Efficiency of Boiler Systems

    can be ignored. Calculate the dry flue gas loss (LDG) using the following formula: LDG, % = [DG x Cp x (FGT - CAT)] x 100 / HHV Where: • DG is the weight of dry flue gas, lb/lb of fuel, • Cp is the specific heat of flue gas, usually assumed to be 0.24 • FGT is the flue gas temperature, °F • CAT is the combustion air temperature, °FGet Price

  • Material Considerations in Boiler Design

    increase in OD crown temperature over the scale free condition for several Q/ Ao values. Figure 3-6 are plot- ted for specific superheater or reheater conditions. It is instructive to calculate the various contributions to the overall flue gas temperature to steam temperature drop each component makes. With Scale (0.019 inch) 270F 6700 Btu/hr/ft2Get Price

  • Boiler Flue Gas Economizer Calculations - Boiler and

    Jun 15, 2007 · A= total surface area of the heat exchanger. A simple starting point is to assume a gas velocity thru the bank of 50-60 fps, and the UA = 1.5 *WgCp,g ( this is equivalent to an NTU = UA/WCp = 1.5 ). The number of tubes operating in parallel to yield a tubeside water velocity of 10-15 fps. A more accurate method is the e-NTU method, but I think Get Price

  • Power plant and calculations: Boiler calculations for

    Heating System Gauges: Pressure and Temperature Gauges on Get Price

  • Boiler calculations - SlideShare

    Boiler type Heat loss per heat input of fuel Oil fired boiler 0,2 - 0,5 % Coal fired boiler, dry ash removal 3 % Coal fired boiler, molten ash removal about 2 % Grate boiler 4-6 % Heat loss due to wasted heat in flue gases Flue gases leave the furnace in high temperature and thus they carry significant amount of energy away from boiler process.Get Price

  • Validated methods for flue gas flow rate calculation with

    reference for flue gas calculation; the standard describes the basic principles and defines empirical formulas for flue gas calculation. This is not immediately apparent or obvious from the title: „Water-tube boilers and auxiliary installations - Part 15: Acceptance tests‟.Get Price

  • MODIFIKASI STEAM BOILER PADA ALAT STERILISASI …

    Unit boiler terbuat dari plat baja tebal 3,5 mm, tinggi 125 cm dan diameter 57 cm, dilengkapi dengantermometer,presure gauge,savety valve,kran pengalir uap panas. Bagian dalam bawah terdapat pipa pemanas air dari pipa schedule 1 inch, yang dipasang horizontal 20 buah. Di bagian samping dipasang pipa kaca tebal 5 mm untuk memantau level air.Get Price

  • APPENDIX 1 MEASURING BOILER EFFICIENCY

    App 1-7 HHV is the higher heating value, hg is the enthalpy in Btu/lb of water vapour at 1 psi and the flue gas temperature (FGT) in °F, and hf is the enthalpy of water at the combustion air temperature (CAT) in °F. hg can be determined from steam tables or from the equation hg, Btu/lb = 1055 + (0.467 x FGT). hf can also be determined from steam tables, or from the simple …Get Price

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