## MATHEMATICAL MODELING OF EVAPORATIVE COOLING OF WATER IN A MECHANICAL-DRAFT TOWER

A. A. Brin', A. I. Petruchik, and S. P. Fisenko UDC 536.42:661.426 A mathematical model of the operation of a mechanical-draft tower is proposed. The model represents a boundary-value problem for five differential equations and for the first time takes into account the following parameters: temperature of inflowing water, its discharge, mean radius of water droplets, mean air velocity inside the water-cooling tower, rate of fall of a droplet, height from which droplets fall, and meteorological conditions, including atmospheric pressure. The basic parameters of the water-cooling tower influencing its thermal efficiency have been revealed. The dissipation of the kinetic energy of the air flow due to the air friction against the surface of falling droplets has been taken into account. A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, Belarus; email: pai@ns1.hmti.ac.by. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 75, No. 6, pp. 68-73, November-December, 2002. Original article submitted June 12, 2002. JEPTER7492020028 JEPTER749208