Heat loss by free convection from a horizontal pipe

Input(s)

$h_{m}$: Heat Transfer Coefficient $(\mathrm{W} / \mathrm{m} \mathrm{K})$

D: Diameter $(\mathrm{m})$

L: Length $(m)$

$T_{o}$: Final Temperature $(\mathrm{K})$

$T_{b}$: Initial Temperature (K)

Output(s)

Q: Heat Loss Rate $(\mathrm{J} / \mathrm{s})$

Formula(s)

$$ \mathrm{Q}=\mathrm{h}_{\mathrm{m}} * \mathrm{pi} * \mathrm{D} * \mathrm{~L} *\left(\mathrm{~T}_{\mathrm{o}}-\mathrm{T}_{\mathrm{b}}\right) $$

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley \& Sons, Chapter: 14, Page: 445.