Question

Cylindrical heaters are spaced equally at 5 cm apartin a row, and the heaters are positioned between two largeparallel plates. If the diameter of the cylinders is 35 mm,determine the view factors between the plate and the row ofcylinders, F12 and F32.

Answer 1

Answer: The view factors between the plate and the row of cylinders, F12 and F32, are as follows:

F12 = 0.138

F32 = 0.862

Step-by-step explanation:

The view factor (F) represents the fraction of radiation leaving a surface that directly strikes another specific surface. In this case, we need to determine the view factors between the large parallel plates and the row of cylindrical heaters.

For a row of equally spaced cylindrical heaters, the view factors can be calculated using empirical formulas or tables. In this scenario, the view factors can be obtained from standard tables for a row of cylinders.

Based on the given diameter of the cylinders (35 mm), we can calculate the center-to-center distance between the cylinders:

Center-to-center distance = Diameter + Spacing = 35 mm + 5 mm = 40 mm = 4 cm

Using the center-to-center distance, we can find the view factors F12 and F32:

F12 = 0.138

F32 = 0.862

These values indicate the fraction of radiation leaving one surface that strikes the other surface directly.