Chimney Air Flow Calculator

Pressure loss ounces in 2 p the horsepower required to drive air through a pipe equals the volume of air in cubic feet per second multiplied by the pressure in pounds per square foot and this product divided by 550.

Chimney air flow calculator.

Search cui devices full line of dc fans. Calculate the air flow caused by natural draft in a normal family house with two floors. A chimney that is too short may produce insufficient draft drawing of air. A chimney that is too long may cause the air to cool before it exits reducing effective draft and worse dripping of exhaust materials onto food.

Chimney size enter the diameter of your chimney pipe to find out how long it should be. Includes 53 different calculations. We ve detected that you re using adblocking software or services. By multiplying air velocity by the cross section area of a duct you can determine the air volume flowing past a point in the duct per unit of time.

The throat is the connection point between the firebox and the cook chamber. The air intakes are critical factors to providing the fire with enough air. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. To use the calculator enter your air velocity or volume air flow and duct area type select your units click calculate air flow and your converted velocity and volume units will be shown.

The height of the hot air column from ground floor to outlet air duct above roof is approximately 8 m. T i inside chimney temperature k t o outside air temperature k chimney draft chart. The outside temperature is 10 oc and the inside temperature is 20 oc. Volume flow is usually measured in cubic feet per minute cfm.

The velocity of air and flue gas in a smaller furnace should not exceed 2 m s. A duct of diameter 0 2 m goes from 1. A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s. Online calculator to quickly determine air flow rate through an orifice.

Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Chimney draft chart pdf chimney area. Required chimney area can be calculated as. A q v 3 where.

Concept of air velocity can be used in air conditioning heating and ventilating work. Floor to the outlet above the roof. Design velocities of larger furnaces should not exceed 10 m s. Enter square footage calculate or enter the square footage of the attic or area to be vented.