What is the temperature of flue gas?

The typical furnace outlet temperature of flue gases is usually around 1200 °C which will decreases gradually along the pathway of heat transfer, while the temperature of the flue gases going to stack is around 150 °C.

How is flue gas temperature measured?

The flue gas temperature is measured in the hot spot of the flue gas where the temperature is highest. The ambient temperature is measured at the intake opening of the burner or in the supply pipe of systems independent of ambient air.

How the flue gas temperature is used in thermal power plant?

The flue gas is used in air pre-heater to increase the temperature of the water before it reaches the boiler [5]. The heat obtained by the flue gas will be around 150ºC which will be suitable for the low pressure heater [6].

What is flue gas in a boiler?

Flue gas refers to a chemical byproduct substance that is generated as a result of a combustion reaction that has escaped through long pipes such as those in boilers, furnaces or steam generators. Flue gas may also be referred to as exhaust gas and may act as a reactor agent for atmospheric corrosion.

What should my flue temp be?

You need at least 250 F all the way to the top to avoid water condensation and creosote formation. Depending on how tall your flue is and how well insulated what you have may be enough, wasted heat, or not sufficient.

Why do flue gases leave the stack at high temperature?

The combustion flue gases inside the flue gas stacks are much hotter than the ambient outside air and therefore less dense than the ambient air. That causes the bottom of the vertical column of hot flue gas to have a lower pressure than the pressure at the bottom of a corresponding column of outside air.

What are normal temperatures for adults?

The average body temperature is 98.6 F (37 C). But normal body temperature can range between 97 F (36.1 C) and 99 F (37.2 C) or more. Your body temperature can vary depending on how active you are or the time of day. Generally, older people have lower body temperatures than younger people have.

What should flue gas Analyser readings be?

Flue gas analysers usually display a CO/CO2 ratio. This shows the ratio of carbon monoxide and carbon dioxide in the exit flue (chimney) of the appliance. Generally when this level is below 0.004 the boiler is considered to be running efficiently. For oil or coal fired appliances the CO should not be above 200ppm.

What is the preferred level of carbon monoxide in flue gases?

The production of carbon monoxide (CO) in the flue gases should be kept below 100-ppm air-free, even though the allowable limit in the stack is 400-ppm air-free.

How high should a boiler flue be?

2.1m
A flue must be at least 2.1m off the ground if it faces a public space. If your property wall backs onto a public space like a pavement, it’s crucial that the flue’s gases don’t endanger people who are walking by. Boiler flues must therefore be placed at least 2.1m off the ground.

What temperature should a wood stove pipe be?

I usually get the pipe to 500 – 550 upon initial start up and close down the air to run the. I would like to run the stove top temp to 600 as Jotul says the best range is 400-600. **All temp readings are the surface temperatures. 275 to 500 is what my manual says for my flue.

How hot does a gas chimney pipe Get?

Type B double wall flue vents are used to vent gas appliances that produce flue gases no higher than 480 degrees Fahrenheit, while L-vents usually vent oil furnaces that produce gases no higher than 570 degrees Fahrenheit.

How to determine the flue gas temperature from a furnace?

Example #1 – Determination of the Flue Gas Temperature from a Natural Gas Furnace 1 Carbon Dioxide 2 Nitrogen 3 Oxygen 4 SO2 5 Argon 6 Water Vapor 7 Total Flue Gas. 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

What is the typical furnace outlet temperature?

The typical furnace outlet temperature of flue gases is usually around 1200 °C which will decreases gradually along the pathway of heat transfer, while the temperature of the flue gases going to stack is around 150 °C.

Which of the following is an example of flue gas?

Example #1 – Determination of the Flue Gas Temperature from a Natural Gas Furnace 1 Carbon Dioxide. 2 Nitrogen. 3 Oxygen. 4 SO2. 5 Argon. 6 Water Vapor. 7 Total Flue Gas. The flue gas temperature can be determine in this case by an iterative process of inputting the flue… More

Does no X> content in flue gases affect flue temperature?

Effect of control of flue temperature on NO x> content in flue gases: Figures highly dependent on nitrogen content in the coal. Power-station boilers produce most quantities of flue gas and a great deal of thought has been given to burner design to keep down flue temperatures.