Posts
Radiative Heat Transfer Coefficient @ Neutrium.net
February 7, 2012Heat transfer coefficients characterise the transfer of thermal energy in terms of heat flow and temperature difference between two participating media. This article demonstrates how to calculate the radiative heat transfer coefficient and thermal resistance for gray, diffuse radiative exchange.
Hydraulic Diameter @ Neutrium.net
January 4, 2012Hydraulic mean diameter provides a method by which non-circular pipe work and ducting may be treated as circular for the purpose of pressure drop and fluid flow rate calculations. This article provides the equations required to determine the hydraulic diameter for a range of non-circular geometries.
Volume and Wetted Area of Partially Filled Horizontal Vessels @ Neutrium.net
January 3, 2012The calculation of a horizontal vessels wetted area and volume is required for engineering tasks such fire studies and the determination of level alarms and control set points. However the calculation of these parameters is complicated by the geometry of the vessel, particularly the heads. This article details formulae for calculating the wetted area and volume of these vessels for various types of curved ends including: hemispherical, torispherical, semi-ellipsoidal and bumped ends.