To calculate the Chimney Draft:
\[ D = h \cdot p \cdot \left(1 - \frac{T_o}{T_i}\right) \cdot g \]
Where:
A chimney draft is a measure of the pressure differential between the inside and outside of a chimney shaft. This pressure differential causes air to move up through the chimney, which helps in removing smoke, gases, and other byproducts of combustion. Proper draft is crucial for the efficient operation of heating systems and to ensure safe venting of combustion gases.
Let's assume the following values:
Use the formula:
\[ D = 10 \cdot 1.292 \cdot \left(1 - \frac{10}{150}\right) \cdot 9.81 \approx 10 \cdot 1.292 \cdot 0.9333 \cdot 9.81 \approx 118.73 \text{ Pascals} \]
The chimney draft is approximately 118.73 Pascals.
Let's assume the following values:
Use the formula:
\[ D = 15 \cdot 1.292 \cdot \left(1 - \frac{5}{100}\right) \cdot 9.81 \approx 15 \cdot 1.292 \cdot 0.95 \cdot 9.81 \approx 184.62 \text{ Pascals} \]
The chimney draft is approximately 184.62 Pascals.
