Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler

10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG BoilerABOUT ZBG PRODUCTS SOLUTION PROJECT SERVICE NEWS CONTACT US  News Industry News Direct Method and Indirect Method for Boiler Efficiency Calculation 2016-08-30 https://www.zgindustrialboiler.com/news/i/two-methods-calculate-boiler-efficiency.html 1/6 the enthalpy of saturated steam in kcal/kg of steam hf .html 2/6 .com/news/i/two-methods-calculate-boiler-efficiency.10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler ABOUT ZBG PRODUCTS SOLUTION PROJECT SERVICE NEWS CONTACT US Thermal efficiency % of (heat) energy input that is effectively useful in the generated steam BOILER EFFICE CALCULATION 1)DIRECT METHOD: 2) INDIRECT METHOD: The energy gain of the the efficiency is the working fluid (water and steam) different between losses is compared with the energy and energy input 25 content of the boiler fuel.zgindustrialboiler. Direct Method efficiency (η) = Heat Input/Heat Output x 100 = Q x (hg .the enthalpy of feed water in kcal/kg of water Direct Method Advantages • Quick evaluation •Few parameters for computation • Few monitoring instruments • Easy to compare evaporation ratios with benchmark figures Disadvantages https://www.hf )/ Q x GCVhg x 100 Hg . moisture content.10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler • No explanation of low efficiency • Various losses not calculated 27ABOUT ZBG PRODUCTS SOLUTION PROJECT SERVICE NEWS CONTACT US English   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 and other unaccounted losses Indirect Method Required calculation data • Ultimate analysis of fuel (H2. S. C.com/news/i/two-methods-calculate-boiler-efficiency. ash content) • % oxygen or CO2 in the flue gas • Fuel gas temperature in ◦C (Tf ) • Ambient temperature in ◦C (Ta) and humidity of air in kg/kg of dry air • GCV of fuel in kcal/kg • % combustible in ash (in case of solid fuels) • GCV of ash in kcal/kg (in case of solid fuels) 29 Indirect Method Advantages • Complete mass and energy balance for each individual stream • Makes it easier to identify options to improve boiler efficiency Disadvantages • Time consuming • Requires lab facilities for analysis Direct Method and Indirect Method for Boiler Efficiency Calculation https://www.zgindustrialboiler.html 3/6 . O2. 10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler Pre: How To Improve BoilerZBG ABOUT Efficiency PRODUCTS Back to list SOLUTION PROJECT SERVICE NEWS CONTACT US Next: Industrial Autoclaves Operation and Procedure HOT PRODUCT CFB Power Plant Boiler Corner Tube Biomass Fired SZS Gas & Oil Water Tube WNS Oil & Gas Fire Tube HOW TO CONTACT https://www.com/news/i/two-methods-calculate-boiler-efficiency.html 4/6 .zgindustrialboiler. Zhengzhou. High and Boilers Chain Grate Boilers New Technology Development Industrial Autoclaves Zone.    Skype Whatsapp Add zgboiler +86 13674980622 Zhengzhou.Chin a PRODUCTS NEWS CONTACT US Oil&Gas Fired Circulating Fluidized Company News Industry News  zg@zzboiler. Henan.html 5/6 .10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler    ABOUT ZBG PRODUCTS SOLUTION PROJECT SERVICE NEWS CONTACT US E-mail Tel Fax zg@zzboiler. China https://www.Henan. 88 Science Road.com/news/i/two-methods-calculate-boiler-efficiency.com 0086-371-86062323 0086-371-67838093 Chat Online If you are interested in our products.com  0086-371- Boilers Bed Boilers Customers Visiting Special Reports 86062323 Biomass Fired Waste Heat Boilers Address: NO. please feel free to contact us now! Click and chat online.zgindustrialboiler. com/news/i/two-methods-calculate-boiler-efficiency.zgindustrialboiler.10/11/2017 Direct Method and Indirect Method for Boiler Efficiency Calculation-ZBG Boiler ABOUT ZBG PRODUCTS SOLUTION PROJECT SERVICE NEWS CONTACT US https://www.html 6/6 .