A flue gas analysis of a gas-fired boiler indicates that the CO 2 content is 8% with a gas flue temperature of 204°C (400°F). Determine the overall thermal efficiency of the boiler. Solution. By reading the monograph of Fig. 8.12, the combustion occurs with an excess air of 48% and excess O 2 of 7%. The overall boiler thermal efficiency is about 81%.
Flue Temperature - an overview | ScienceDirect Topics
Power 101: Flue Gas Heat Recovery in Power Plants, Part I
Jan 25, 2019 · In a large coal-fired boiler, the physical length of the furnace ranges from 10 to 20 m, temperature range of the flue gas is from approximately 800–1800 °C, and the speed of sound is from 540 to 840 m/s. First, the signal choice was determined by a type for which the simulation experiments were conducted using MATLAB.
Aug 12, 2016 · Furnace Exit Gas Temperature (FEGT), The Forgotten Variable. One of the key variables when designing a boiler is furnace exit gas temperature (FEGT). This is usually defined as the temperature in a vertical plane just in front of the convection pass as the flue gas escapes the radiant zone. This helps determine that the furnace heat absorption properly cools the flue gas before …
Jan 07, 2020 · 710 ℃, respectively; that of 2,800 KW and 4,000 KW at 720 ℃ and 880 ℃, respectively. As the actual temperature of flue gas at the exit of heating furnace is close to the above calculated one
the exit-gas temperature (FEGT) in boiler furnaces. The LumaSense solution utilizes our IPE 140/45 pyrometer with a custom narrowband filter (near 4.5 µm) to monitor the CO 2 emission line from the hot combustion gases (Figure 4). Typical fossil fuel combustion processes contains approximately 10% CO 2. The radiative emissions from these
Apr 01, 2010 · According to an FGD manufacturer, the optimal flue gas temperature for a desulfurization process is approximately 149F (65C).
May 10, 2021 · W. Cmin thanks to this flue gas condenser, or heat exchanger, more than 50% of the energy of this stack . Power 101: Flue Gas Heat Recovery in Power Plants, Part I. 1 Apr 2010 The temperature of the flue gas leaving the boiler is commonly Available heat sinks limit the amount of low-temperature heat that can be . Analysis of Deep Heat Recovery