As we are aware, boiler efficiency can be stated in two different ways, one being direct and another, indirect. Each method has its own advantages and disadvantages. The direct method gives us more realistic efficiency values but in order to understand where the losses are taking place, indirect efficiency will be more helpful.

Learn MoreIn real practice, two techniques are usually used to find out boiler performance, namely direct method and indirect method of efficiency calculation. Direct efficiency This is also recognized as the input-output method because it requires only the valuable output like steam and the heat input for estimating the boiler efficiency.

Learn MoreOct 07, 2020 · Indirect Method. Indirect method is based on all the losses in boiler. In this we estimate all the losses and subtract them from 100 to get indirect boiler efficiency. We can write down the formula for indirect method of efficiency as below: Total loss includes following contributors: L1 = heat loss with flue gas through stack

Learn MoreBoiler is a steam producing equipment, which produce steam with burning of fuel. Mostly coal is used as fuel in boiler. Efficiency of the boiler should be determined by two method, direct method and indirect method. It required miscellaneous parameters for determining the efficiency.

Learn Moreefficiency in steam boilers, direct method (input-output method) and indirect method (heat loss method). The errors in direct method make significant change in efficiency thus indirect method is more accurate method for measuring the efficiency. The indirect method is the focused method in this study, therefore various type of losses be evaluated.

Learn MoreJun 08, 2021 · Boiler Efficiency Calculation by Indirect Method / Major Heat Losses in Boiler [Hindi]Thermal Power plantAbout VideoThis video is informative of engineering

Learn MoreThere 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 …

Learn MoreDirect and Indirect efficiency in boilers

Learn MoreDirect and Indirect efficiency in boilers There are two methods for boiler efficiency calculation:-. Direct Method. Indirect Method. Direct method is quick method Following Data needs to be collected :-. i Percentage heat loss due to dry flue gas. ii. Percentage heat loss due to evaporation of

Learn MoreASME PTC-4 – Indirect Method: Stack Loss Method This method approximates the stack losses of a boiler to estimate boiler efficiency. Parameters The parameters needed to calculate this method are given below. These data are calculated during source testing. 1. Stack temperature (T Stack) 2. Dry oxygen in flue gas (O 2,Dry,%) in percent

Learn MoreA boiler's indirect efficiency is determined by finding the individual losses enchanting in place in a boiler and then deducting those amounts from . Moreover, this technique includes finding the magnitudes of entire calculable losses enchanting place in a boiler by individual measurements.

Learn More3.How about the quality of way boiler efficiency by indirect method is more useful than direct method? ? Our industrial steam boiler manufactured strictly according to national and international standard. our products have approved ASME, IBR, ISO9001-2008, etc. way boiler efficiency by indirect method is more useful than direct method?

Learn MoreThis efficiency 1.7.4 Boiler Efficiency by Indirect Method: Calculation Procedure and Formula. View More; Boiler Efficiency Calculations. For quick estimates of oil and natural gas fired steam generators,however,the following Efficiency on HHV and LHV basis can be related using the formula:.

Learn More2.5.2 Indirect Method Testing Similar to the method of evaluating boiler efficiency by indirect method, furnace efficiency can also be calculated by indirect method. Furnace efficiency is calculated after subtracting sensi-ble heat loss in flue gas, loss due to moisture in flue gas, heat loss due to …

Learn MoreJan 14, 2015 · Unburnt losses in bottom ash (Carbon) Boiler Efficiency by indirect method = 100 - (L1 + L2 + L3 + L4 + L5 + L6 + L7 + L8) 6. This is also known as 'input-output method' due to the fact that it needs only the useful output (steam) and the heat input (i.e. fuel) for evaluating the efficiency.

Learn MoreIndirect Method of Testing: ADVERTISEMENTS: 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.

Learn MoreIn this study, the efficiency of a fluidized bed boiler having a steam production capacity of 462000 kg/h and 17.2 bar pressure was calculated by using indirect method.

Learn MoreBoiler Efficiency: Introduction and Methods of Calculation

Learn MoreThe indirect method is the most accurate method to determine boiler efficiency. In this method, the parameters that effect on efficiency be measured and different types of losses be calculated. Three of the most effective parameters are flue gas temperature, ambient temperature, and the fuel type.

Learn MoreApr 12, 2011 · Direct and Indirect efficiency in boilers - Direct and indirect efficiency of boiler are the two methods for finding boiler efficiency, Direct method is quick method for boiler efficiency calculation, In this method, Below Excel sheet may be used to calculate indirect boiler efficiency.

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