Radiative Heat Transfer in Cylinder-Row Systems : Part 2, Variation of Heat-Transfer Characteristics with Number of Rows

Abstract

In succession to the previous study, radiative heat transfer in three-row and four-row gray cylinder systems with square-center arrangements is exactly analyzed to discuss the influence of the number of rows on the characteristics of heat transfer of these systems. Radiative heat transfer in semi-infinite rows of gray cylinders as a limiting case of a large number of rows is also analyzed approximately by using a simplified model, and the accuracy of the solutions is evaluated. On the basis of equivalent emissivity, the characteristics of cylinder-row systems are examined in relation to the number of rows, surface esmissivity and center-to-center distance of cylinders.