This calculation determines the heat transfer through a cylinder wall by conduction.
Heat Transfer by Conduction through a Cylindrical Wall Calculator
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Heat Transfer by Conduction through a Cylindrical Wall formula
| \(\large{ Q_c = \frac { 2 \; \pi \; k \; l \; \left( T_1 \;-\; T_2 \right) } { ln \; \left( \frac {r_2 }{ r_1 } \right) } }\) |
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Where:
| Units |
English |
Metric |
| \(\large{ Q_c }\) = heat transfer by conduction |
\(\large{\frac{Btu}{hr}}\) |
\(\large{W}\) |
| \(\large{ l }\) = length of material |
\(\large{ft}\) |
\(\large{m}\) |
| \(\large{ r_1 }\) = radius inside diameter (ID) |
\(\large{in}\) |
\(\large{mm}\) |
| \(\large{ r_2 }\) = radius outside diameter (OD) |
\(\large{in}\) |
\(\large{mm}\) |
| \(\large{ T_1 }\) = temperature of one surface of the wall |
\(\large{F}\) |
\(\large{K}\) |
| \(\large{ T_2 }\) = temperature of the other surface of the wall |
\(\large{F}\) |
\(\large{K}\) |
| \(\large{ k }\) = thermal conductivity |
\(\large{\frac{Btu-ft}{hr-ft^2-F}}\) |
\(\large{\frac{W}{m-K}}\) |
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