Question

Natural Convection from an Oven Wall. The oven wall in Example 4.7-1 is insulated so that the surface temperature is 366.5 K instead of 505.4 K. Calculate the natural convection heat-transfer coefficient and the heat-transfer rate per m of width. Use both Eq. (4.7-4) and the simplified equation. (Note: Radiation is being neglected in this calculation.) Use both SI and English units.

Answer 1

i) Heat transfer coefficient (h) = 7 w/m²k

ii) Heat transfer per meter width of wall

= h x L x 1 x (Ts - T₆₀)

= 7 x 0.3048 x (505.4 - 322) = 414.747 w/m

Step-by-step explanation:

see attached image