example calculation of boiler efficiency

How to Calculate Boiler Steam Flows | Hunker

A boiler burning 20 gallons per hour would produce [(150,000 btu/gal x 20 gal/hr) / 970.28 btu/lb] x 0.85 (efficiency) for a total of 2,628.1 lb/hr of steam. Step 5 Calculate the combustion-air mass required to burn the 20 gallons of No. 6 fuel oil above.

How much fuel required for 1TPH boiler? - Quora

Mar 10, 2018 · I will give you an example, so you can take this as reference and calculate fuel required for any capacity of Boiler for any fuel. Boiler Capacity - 1000 kg/hr Steam Pressure - 10.5 kg/cm2(g) Steam Temperature - 185.5 Deg c (Saturated Steam)- You


For heating steam boilers from 50 to 600 BHp or 10,000 to 70,000 Steam Lbs/Hr For process steam boilers from 50 to 600 BHp or 10,000 to 70,000 Steam Lbs/Hr Use the Boiler Efficiency Calculator to estimate efficiency gain! MicroMod Boiler Efficiency & Payback Analysis (S. G. Dukalow Empirical Method) Enter Data in shaded boxes only.

Boiler Efficiency Calculation by Efficiency Calculator Using

Boiler efficiency calculation, using our online efficiency calculator, is the direct method for calculating the boiler efficiency. The efficiency of Boiler is calculated on the basis of the following inputs:-Steam output (in Kgs) from the boiler every hour which can be measured using steam flow meters or keeping track of the amount of water (in

THERMAL POWER: Boiler Efficiency calculations

Sep 23, 2009 · Efficiency figure depends upon the type of boiler as well as on the type of fuel and it’s constituents. For example, efficiency of a Bagasse fired boiler is about 70% where as that of oil fired boilers is about 85 %.

Flue Gas Waste Heat Boiler Thermal Efficiency Calculation

Flue Gas Waste Heat Boiler Thermal Efficiency Calculation. Incomplete combustion heat loss q4 Incomplete combustion heat loss q4 is taken away by the boiler flue gas discharged fly ash and slag, depending on the nature of the fuel and the operating level of the operator, the simplified calculation formula is: q4 = 337.27 × Aar × Cfh / [Qnet.ar ×

Calculator: Boiler Efficiency | TLV - A Steam Specialist

Online calculator to quickly determine Boiler Efficiency. Includes 53 different calculations. Equations displayed for easy reference.

Maximizing the Efficiency of Condensing Boilers

Condensing Boilers - 101 •Notes on boiler construction •Different materials require different water treatment. •Cast Aluminum, Stainless Steel, Possibly Cast Iron •pH, Chlorides, alkalinity, cleanliness, etc. 20

Q1: What is the boiler efficiency?

The actual calculation for the boiler efficiency is the followings; h2: The ratio enthalpy of feed water (kJ/kg) h1: The ratio enthalpy of steam (kJ/kg) The initial value of boiler efficiency for Z Boiler is depending on the boiler type, but it is normally 80-88%.

Boiler efficiency, losses and performance optimization

Boiler shutdown, emergencies, protections. Boiler efficiency, losses and performance optimization Dr. T K Ray NTPC Limited E-mail: [email protected]

HHV vs LHV - GCV vs NCV - The intersection of energy and

Oct 17, 2016 · The answer is that it depends on how the efficiency will be used. A common calculation is to calculate the gas consumption associated with supply heat from a gas boiler. If we then want calculate the cost of this gas, we multiply by a gas price.

Direct Method and Indirect Method for Boiler Efficiency

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

Boiler Efficiency Report-1 - UNFCCC

3. Calculations & Analysis: Boiler Efficiency Estimation: The efficiency of the boiler was calculated by Indirect method & considering the GCV basis method of losses measurement. In this method individual area of loss is quantified. The results obtained are tabulated below. Table: Boiler Losses / Efficiency Estimation

AFUE and Real Boiler Efficiency | Annual Fuel Utilization

In this example, during warm weather, the boiler temperature is 50ºF lower and so the vent temperature could be about 50ºF lower, resulting in a combustion efficiency improvement of about 1%. The Department of Energy estimates this as a 0.6% savings annually for heat only boilers.

How to calculate boiler efficiency by Direct Method

Nov 24, 2016 · There are two methods of assessing boiler efficiency. 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 is the difference between the losses and the energy input.

Gross and net input, and “efficiency” figures of over 100%

Nothing beats a worked example so here are some manufacturer figures for an actual boiler, a Baxi Duotec Combi 33 HE A, for central heating in condensing mode at full power: Gross heat input: 32.1 kW. Net heat input: 28.9 kW (a factor 1.11 lower) Heat output: 30.3 kW . The efficiency (heat output/gross input) is 94.4%.

Determining & Testing Boiler Efficiency for Commercial

efficiency. Boiler efficiency, in the simplest terms, represents the difference between energy input and energy output. A typical boiler will consume many times the initial capital expense in fuel usage annually. Consequently, a difference of just a few percentage points in boiler efficiency between units will result in substantial fuel savings.

Combustion Efficiency and Excess Air

The combustion efficiency increases with increased excess air - until the heat loss in the excess air is larger than the heat provided by more efficient combustion. Excess air to achieve highest possible efficiency for some common fuels: 5 - 10% for natural gas. 5 - 20% for fuel oil. 15 - 60% for coal.

Boiler Efficiency Calculation by Direct Method - Short Tutorials

The direct method testing is also sometimes referred to as input-output method. This method estimates the boiler efficiency using the heat added to the steam and the gross heat in the fuel. Formula: Boiler Efficiency % = ( Heat Output / Heat Input ) x 100 Boiler Efficiency % = ( Heat Added to the Steam / Gross Heat in Fuel ) x 100

What is Boiler Efficiency? Boiler Efficiency Calculation

Boiler Efficiency Definition. According to Wikipedia” Boiler Efficiency is a relationship between energy supplied to the boiler and energy output received from the boiler.” Boiler Efficiency usually expressed in (%) percentage. Boiler Efficiency Calculation Formula “Boiler efficiency (%) = [Q (H-h)/q*GCV]*100

Boiler Efficiency Calculation - YouTube

Dec 04, 2019 · Boiler efficiency calculation By Direct and Indirect Method with Example. Boiler efficiency calculation By Direct and Indirect Method with Example.

Example Calculations and Forms

Calculation of potential emissions must be done with “worst-case” values for each pollutant. An example would be emissions from solvent use at a facility. Solvent A contains 3 lb/gal toluene and 2 lb/gal benzene, while solvent B contains 1 lb/gal toluene and 4 lb/gal benzene.

Improve Your Boiler’s Combustion Efficiency

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

Efficiency Calculations of Bagasse Fired Boiler on the

Read the Text Version. With the Ansari (1988) calculated the efficiency of a bagasseincreasing population and industrial development, the fired boiler having steam generating capacity of 90required demand of electricity is being compensated tons/hr. Working pressure of steam was 24 kg/cm2by thermal power plants.

Boiler Efficiency Monitoring and Boiler Losses Analysis: A Review

because of hydrogen present in fuel is calculated. Boiler efficiency calculation takes place from boiler losses. Figure 4: Application Program to monitor Boiler efficiency VII. CONCLUSION In an Industry, using indirect method of boiler efficiency calculation involves complex mathematical equations. It is a traditional method and consumes more time.


The efficiency can be shown by subtracting the heat loss part from 100.An important benefits of this method is that the errors in measurement do not make important changes in efficiency. Thus if the boiler efficiency is 90%,flaw of 1% in direct method will result in important change in efficiency.

Methods for Calculating CHP Efficiency | Combined Heat and

For example, if a CHP system is natural gas-fired and produces steam, then α represents the efficiency of a conventional natural gas-fired boiler. Typical boiler efficiencies are 80 percent for natural gas-fired boilers, 75 percent for biomass-fired boilers, and 83 percent for coal-fired boilers.

AFUE Savings Calculator for Furnaces and Boilers

The calculator estimates your heating cost savings over a one, five, ten and fifteen year period. The calculator computes how much per year you are spending on heating your home based on three primary factors: Your current heating system’s fuel type, its AFUE rating; and its BTU input capacity.

Example Calculations and Forms

Control Efficiency is the control equipment pollutant removal efficiency. To convert to tons, see the conversion factors listed on page 85 in Appendix D. Example MSEI's The following example shows how calculations are performed and where data is reported on the inventory forms.

Calculator: Boiler Efficiency | TLV - A Steam Specialist

Boiler Efficiency; Condensate Recovery. Economic Analysis. Open System; Closed System; Heat Exchanger; Flash Steam Recovery; Pipe Sizing. Between Equipment and Trap; Condensate Recovery Pipe Sizing by Pressure Loss; Condensate Recovery Pipe Sizing by Velocity; Pump Outlet Line; Flash Steam Generation; Water. Piping Design. Pipe Sizing by Pressure Loss; Pipe Sizing by Velocity


In case of boilers with continuous blowdown, the heat loss due to blowdown should be calculated and added to the heat in steam. 1.6.3 Boiler Efficiency by Direct Method: Calculation and Example Test Data and Calculation. Water consumption and coal consumption were measured in a coal-fired boiler at hourly inter- vals.

Annex 6.E Determining seasonal boiler efficiency

The following worksheet (taken from the CLG Non-domestic Building Services Compliance Guide) shows a completed example, calculating the overall seasonal boiler efficiency of a multi-boiler system with a rated output of 625kW, served by three boilers, each rated at 250kW.

Boiler Efficiency Calculators | HSB

Boiler Efficiency Calculators Boilers and steam systems consume large amounts of energy and may present an opportunity for significant cost savings. See the "About This Calculator" tab to get started on this savings.

Calculation Method: CALCM:02

15034. The calculation method cannot be applied to low temperature boilers. The efficiencies calculated by this procedure are: a) SEDBUK (Seasonal Efficiency of Domestic Boilers in the UK). This is used as a general indicator of efficiency for gas and oil boilers; it is no longer used for SAP calculations but provides an intermediate calculation step.

Steam Calculators: Boiler Calculator

Mar 17, 2015 · Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

4 Examples of the Efficiency Formula - Simplicable

For example, an electric car that consumes 100 kWh resulting in 60 kWh of power to the wheels has efficiency of: efficiency = (60 / 100) × 100=60% Energy efficiency is always lower than 100% as machines always generate some waste such as the heat produced by an engine.

boiler efficiency calculation excel sheet – Industrial Boiler

Jul 03, 2017 · Simple Boiler Efficiency Calculation – Brighthub . The ASME method for Boiler Efficiency Calculation PTC 4 is elaborate and requires many input data points, measurements, and samples. With some practical assumptions, the calculations are made simple and are shown in this .

Simple Boiler Efficiency Calculation - Brighthub Engineering

The ASME method for Boiler Efficiency Calculation PTC 4 is elaborate and requires many input data points, measurements, and samples. With some practical assumptions, the calculations are made simple and are shown in this article. The Losses method is used to calculate boiler efficiency.

Boiler Efficiency - Engineering ToolBox

Boiler efficiency - combustion gross and net calorific value. Fuel to Fluid Efficiency - indicates the overall efficiency of the boiler inclusive thermal efficiency of the heat exchanger, radiation and convection losses - output divided by input. Boiler Efficiency is in general indicated by either Thermal Efficiency or Fuel to Fluid Efficiency depending the context.