Air at atmospheric pressure (T=30°C) and with a mean velocity of 1.8km/h flows inside thin-walled, squared cross-section
Posted: Sat May 21, 2022 10:04 am
Air at atmospheric pressure (T=30°C) and with a mean velocity of 1.8km/h flows inside thin-walled, squared cross-section ducts of sides b = 25mm. The air is heated from the walls of the duct, which are maintained at a uniform temperature by condensing steam on the outside surface. Determine the amount of heat per unit of its length if surface temperature is 110°C. Answer: