COMPARATIVE STUDY OF HYPERBOLIC COOLING TOWERS
Keywords:
Finite Element Method, Cooling Tower, Shell Elements, 20-noded Hex (Solid), 15-noded Wed (Solid), 10- noded Tetrahedron (Solid), Total Deformation, Equivalent Von-Mises Strain, Equivalent Von-Mises StressAbstract
Natural Draft Towers, rely on the heat of the water to generate the air movement inside the tower. They are
only used for very large capacity systems such as Electricity Generation Plants, where they are called Hyperbolic
Towers. As it is very tall structure it is normally assumed that wind analysis is important. But there are some locations
where stresses developed due to wind are less than stresses developed by earthquake force. Therefore the
predominance of lateral force (either wind or earthquake) depends on location of cooling tower. There are so many
work has been done on cooling tower but, yet to verify behavior of cooling tower-shell against wind load with and
without stiffening ring beam using ANSYS needs extensive focus. To find out optimal solution of shell dimensions
without stiffening ring beam. To find out optimal solution of shell with stiffening ring beam. To study the effect of
number of stiffening ring beam, location of stiffening ring beam and size of stiffening ring beam against the lateral
load like wind load. The area discussed above yet to study comprehensively. The results of analysis against wind load
without stiffening ring beam are within the permissible limit of (deflection, Equivalent Elastic Strain and Equivalent
Stress). In additional all results are varying in range of 40% to 80% of the maximum values in radial direction and in
meridional direction.
