Regarding air heat exchange calculations
Thread Content
Experts, the existing cold air flows over the surface of the heat transfer medium at a speed of 15 m/s (in direct contact); the temperature of the cold air is 20°C, while that of the heat transfer medium is 120°C. The contact time is 20 seconds. How can this heat transfer be calculated, and to what temperature will the temperature of the heat transfer medium drop? Among them, the thermal conductivity of the heat transfer medium is 0.5 kcal/(m·h·℃)
Is the problem too simple, or are the conditions not clearly stated? Why isn’t anyone helping to solve it?