natural gas heat transfer oil boiler flue gas temperature
natural gas composition chart for boiler flue gas
Typical flue gases from natural gas-fired power plants may contain 8-10% CO 2 18-20% H 2 O 2-3% O 2 and 67-72% N 2; typical flue gases from coal-fired boilers may contain 12-14 vol% CO 2 8-10 vol% H 2 O 3-5 vol % O 2 and 72-77% N 2. Get a Quote; and in the Flow (Btu
Overall Heat Transfer Coefficient Table Charts and ...
Overall Heat Transfer Coefficient Table Chart: The heat transfer coefficient is the proportionality coefficient between the heat flux and the thermodynamic driving force for the flow of heat (i.e. the temperature difference T): h = q / (Ts - K) where: q: amount of required (
Flue Gas Temperature and Heat in the Flue Gas Flow (Btu ...
The flue gas temperature can be determine in this case by an iterative process of inputting the flue gas mass flows and an assumed flue gas temperature to see if the Total Flue Gas Btu/hr is equal to if not you try another assumed temperature.
As an example consider a boiler burning natural gas. The final flue gas temperature has been measured to be 400°F and the ambient temperature has been measured as 70°F. The net stack temperature is 330°F (400°F - 70°F = 330°F). Flue gas oxygen content was measured with a portable combustion analyzer as 8.0% dry gas sample.
Recovery of heat from flue gas (Patent) | OSTI.GOV
A flue gas stream emitting from a boiler after removing the flyash and fine particulate matter is cooled in a reversible condensing heat exchanger to drop its temperature from approximately 270 F to near ambient temperature and to preheat a combustion air stream
Flue Temperature - an overview | ScienceDirect Topics
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%.