## calculate boiler efficiency using the indirect method

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### boiler efficiency calculation indirect method excel – CF

File Size: 299KB ASME indirect method to calculate combustion efficiency for your boiler (s) at each firing rate.. In order for this to work you must enable iterative calculations, In Excel hit the Boiler Excess Air Tune-up.xls

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### Boiler Efficiency Calculation by Indirect Meth

Let us consider an example for finding the efficiency of the coal fired boiler using indirect testing method. Given, Fuel firing rate =5599.17 kg/hr Steam generation rate =21937.5 kg/hr Steam pressure =43 kg/cm 2 (g) Steam temperature =377 o C Feed water temperature =96 o C %CO 2 in Fuel gas =14 %CO in fuel gas =0.55 Average fuel gas temperature =190 o C

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### Direct Method and Indirect Method for Boiler Efficien

Indirect Method. Efficiency of boiler (η) = 100 – (i+ii+iii+iv+v+vi+vii) Principle losses: i) Dry flue gas ii) Evaporation of water formed due to H2 in fuel iii) Evaporation of moisture in fuel iv) Moisture present in combustion air v) Unburnt fuel in fly ash vi) Unburnt fuel in bottom ash 28vii) Radiation

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### Boiler Efficiency Calculation: a complete gui

Aug 29, 2017· Indirect Method. What is meant by the indirect calculation of Boiler Fuel Efficiency is a calculation that does not directly involve the formulation of the main components of the input and output boiler efficiency energy, but by calculating the losses that exist. Let us …

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### BOILER EFFICIENCY GUIDE - Cleaver-Broo

[PDF]boiler efficiency between units can translate into substantial savings. The efficiency data used for comparison between boilers must be based on proven performance to produce an accurate comparison of fuel usage. However, over the years, efficiency has been represented

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### How to calculate boiler efficiency by Direct Meth

Nov 24, 2016· How to calculate boiler efficiency by Direct Method ? 1) Boiler Efficiency by Direct Method: Where the energy gain of the working fluid (water and steam) is compared with the energy content of the boiler fuel. 2) Boiler Efficiency by Indirect Method : Where the efficiency …

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### Boiler Efficiency Calculation by Direct Meth

File Size: 570KB Boiler Efficiency % = [ ( Steam Flow Rate x ( Steam Enthalpy - Feed Water Enthalpy ) ) / ( Fuel Firing Rate x Gross Calorific Value ) ] x 100. Let us consider an example of a Coal fired Boiler where the heat output and heat input required values are given as follow, Heat Output Values:

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### Boiler Efficiency Calculation by Indirect Meth

Indirect Method of Testing: In this method, the efficiency can be obtained by substracting the heat loss fractions from 100. Boiler efficiency = 100 – (L 1 + L 2 + L 3 + L 4 + L 6 + L 7 + L 8 ). Where L 1 = Loss due to dry flue gas. L 2 = Loss due to hydrogen in fuel. L 3 = Loss due to …

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### Calculating Boiler Efficiency - Forbes Marsha

Indirect Efficiency. The indirect efficiency of a boiler is calculated by finding out the individual losses taking place in a boiler and then subtracting the sum from 100%. This method involves finding out the magnitudes of all the measurable losses taking place in a boiler by separate measurements.

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### TO CALCULATE AND IMPROVEMENT IN THE EFFICIENCY OF �

File Size: 296KB [PDF]There are basically two methods to calculate the efficiency of boiler, direct method and indirect method. Both the methods give different values as direct method does not consider any losses whereas indirect method gives the result by calculating all the losses.

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