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# ﻿boiler fuel calculation questions Boiler Fuel Consumption Calculation--ZBG ### Questions answers & calculation on Boiler draught & Chimney

Apr 19, 2021 · We have excess air EA = O2 X 100 / (21-O2) EA = 4.7 X 100 / (20-4.7) EA = 30.71% 2-Calculate the Oxygen level (O2) in flue gas, if excess air is 25% We have Excess air EA = O2 X 100 / (21-O2) 25 = O2 X 100 / (21-O2) O2 = 4.2% 3-A Boiler's combustion system requires 5.5 kg of air for burning 1 kg of fuel, then calculate the total air required for complete combustion if its flue gas has 4.1% of O2 … ### Industrial Boiler Efficiency Calculation & Factors

For example, The calculation formula of fuel demand for steam boiler(saturated steam boilers) is as follows: Bj=B (1-q4/100) Bj- calculation of fuel consumption, kg/h B- fuel consumption, kg/h q4- boiler mechanical incomplete combustion loss,% B=100Q/ (Qdw*) B- fuel consumption, kg/h Q- effective heat utilization of boiler, kj/h Qdw- Low calorific value of fuel, kj/kg η- boiler thermal efficiency,%. Q = D (Ibh-Igs-rω / 100) + Dpw (Ibs-Igs) Q- boilers … ### How to calculate the gas consumption of the gas boilers

Boiler Fuel Consumption Calculation--ZBG ### Crooked River Heating, LLC Harrison, ME 04040 - YP.com

Jul 07, 2017 · Whether you're ready for a new boiler installation or just wondering how often to service your current model, the topic of boilers can be a confusing one. It can be tough trying to make sure you're buying the correct boiler for your home, or deciding whether your boiler can be repaired or not. That's why we've put together this list of commonly asked questions about boilers. ### Boiler – Fundamentals and Best Practices

Gas consumption = Gas boiler power /Fuel calorific value / Gas boiler heat value utilization. For example, we operate 1 ton gas boiler for 1 hour (full load). The boiler output is 600,000 kcal (fixed value), the natural gas calorific value is 36.22 MJ/Nm3 (fixed value), … ### Chapter 4.1: Boiler Short type questions

i. Evaluation of boiler efficiency: By direct method Boiler efficiency (%) : q GCV Q (H h) 100 × × − × Q = Quantity of steam generation per hour : 7000 kg/h q = Quantity of fuel used per hour : 600 x 0.89 = 534 kg/h GCV = Gross calorific value of the fuel : 9650 kcal/kg H = Enthalpy of steam (kcal/kg) : 665 kcal/kg  