A furnace is constructed with (inside) 0.20 m of firebrick, 0.10 m of insulating brick (middle) and 0.20 m of building brick (outside). The furnace is at 1200K, while the ambient temperature is 330K....

Extracted text: A furnace is constructed with (inside) 0.20 m of firebrick, 0.10 m of insulating brick (middle) and 0.20 m of building brick (outside). The furnace is at 1200K, while the ambient temperature is 330K. 31. Which of the following is NOT true about convection: - Convection is the sum of advection and diffusion - Convection is possible in all phases of matter - Convection is governed by Newton's law of cooling Convection is proportional to temperature difference Convection is proportional to the heat transfer coefficient ir r to te-The 32. Which of the following is NOT true in a Joule-Thomson expansion: The system is isenthalpic - There is no heat transfer to the surroundings The system is isochoric Shaft work is assumed to be zero The system is at steady state 33. If the thermal conductivities of each layer is 1.4-, 0.21- and 0.7 W/m.K respectivęly estimate the heat loss per unit area. Ignore the effects of convection. (W/m 34. What is the temperature between the firebrick and insulating brick? (K) 35. Assuming the temperatures remain the same, but including the effects of convection, will the heat transfer be bigger or smaller? 36. Assuming the hot temperature decreases, will the heat transfer be bigger or smaler?