TY - JOUR
TI - An analytical algorithm to determine allowable ampacities of horizontally installed rectangular bus bars
AU - Klimenta Dardan O
AU - Perović Bojan D
AU - Jevtić Miroljub D
AU - Radosavljević Jordan N
JN - Thermal Science
PY - 2016
VL - 20
IS - 2
SP - 717
EP - 730
PT - Article
AB - The main objective of this paper is to propose an algorithm for the  determination of the allowable ampacities of single rectangular-section bus  bars without the occurrence of correction factors. Without correction  factors, the ampacity computation of the copper and aluminium bus bars is  fully automatized. The analytical algorithm has been implemented in a  computer program code that along with the allowable ampacity can compute the  bus bar temperature and the individual heat transfer coefficient for each  side of the bus bar, as well as their corresponding power losses. Natural and  forced convection correlations for rectangular bus bars are applied. Effects  of the solar radiation and radiation heat losses from the bus bar surface are  taken into consideration as well. The finite element method (FEM) has been  used for the linear/non-linear steady-state thermal analysis, i.e. for  validation of the analytical algorithm. All FEM-based numerical computations  were carried out using the COMSOL Heat Transfer Module. [Projekat  Ministarstva nauke Republike Srbije, br. TR33046]