Consider a thin layer of liquid water on a concrete surface. The surrounding air is dry wi...

Consider a thin layer of liquid water on a concrete surface. The surrounding air is dry with a convection heat transfer coefficient of 50 W/m2•K. The liquid water has an emissivity of 0.95, and the air and surrounding temperature is 30°C. If the layer of liquid water has uniform temperature of 20°C, determine the conduction heat flux through the concrete. Answer: 1417 W