CLEAR STEPS PLZ

EXAMPLE 18-3 Heating of Brass Plates in an Oven In a production facility, large brass plates of 4cm thickness that are initially at a uniform temperature of 20C are heated by passing them through an oven that is maintained at 500C (Fig. 18-21). The plates remain in the oven for a period of 7min. Taking the combined convection and radiation heat transfer coefficient to be h=120W/m2K, determine the If the plates when they come out of the oven. =33.9106m2s1h-101//m2vI1K1 Example 18-3. Cooling of a Long Stainless Steel Cylindrical Shaft. Determine the temperature at the center of the shaft after cooling for 45 minutes using a chart from the lecture slides. There are many charts in Lecture \#22 slides, but you will need only one of them for this solution. Again, small error is fine when you read from the chart. Since you are going after the temperature, you will read an y value from the chart. To do that, you need to know what line to follow (you need only one line out of many given lines) and what non-dimensional time you have. EXAMPLE 18-3 Heating of Brass Plates in an Oven In a production facility, large brass plates of 4cm thickness that are initially at a uniform temperature of 20C are heated by passing them through an oven that is maintained at 500C (Fig. 18-21). The plates remain in the oven for a period of 7min. Taking the combined convection and radiation heat transfer coefficient to be h=120W/m2K, determine the If the plates when they come out of the oven. =33.9106m2s1h-101//m2vI1K1 Example 18-3. Cooling of a Long Stainless Steel Cylindrical Shaft. Determine the temperature at the center of the shaft after cooling for 45 minutes using a chart from the lecture slides. There are many charts in Lecture \#22 slides, but you will need only one of them for this solution. Again, small error is fine when you read from the chart. Since you are going after the temperature, you will read an y value from the chart. To do that, you need to know what line to follow (you need only one line out of many given lines) and what non-dimensional time you have