A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s.
Flue size kitchen chimney size chart.
The ideal flue size is typically determined by the exhaust outlet of the stove or appliance.
10 3 32 chimney sizes for neutral draft equipment.
Once you have that number you can search for a slip in chimney cap of the same size.
Design velocities of larger furnaces should not exceed 10 m s.
An appliance operating at a steady state efficiency over 83 percent may be.
For example you could vent a 6 inch stove into an insulated chimney that is 8 inches in diameter.
Dimensions for square rectangular and round clay flue liner.
You need to measure the outside length and width of your flue in order to cap an oval chimney termination.
Quality chimney liner material that meets astm and excels in freeze thaw environments.
As a general rule the diameter of the chimney should match the flue collar on your wood stove.
Solving your chimney s math.
With that in mind the height of the chimney should be at least 15 feet from the floor of the fireplace to the top of the flue.
31 chimney sizes for appliances needing draft.
Required chimney area can be calculated as.
The venting capacity of a rectangular or square masonry flue if translated directly into actual or measured square inches of cross section is less than a round chimney flue of the same square inches of venting capacity.
This article series provides information about masonry fireplaces.
A 6 inch stove requires a 6 inch flue.
The most popular range of sizes.
The velocity of air and flue gas in a smaller furnace should not exceed 2 m s.
Chimney height also plays a role and taller chimneys generally draft better than shorter ones.
Net flue gas temperature rise above ambient and flue gas composition co2.
Single flue chimneys with oval flues.
Figuring out the proper size for your chimney flue can seem like a challenge.
Then you can search for a chimney cap designed to fit an oval opening of those dimensions.
32 to 36 wide 25 to 29 high it is important for the size of the chimney to be correctly calculated to match the fireplace opening.
The rule of thumb is a 1 10 ratio meaning that the fireplace opening can be 10 times as large as the flue tile cross section.
Venting a wood stove.
For example an 8 x 8 square nominal clay chimney flue tile liner has inside dimensions of 6 3 4 x 6 3 4.
In most cases a step up is also fine.
A q v 3 where.