MATHEMATICAL-MODEL OF HEAT AND MASS-TRANSFER PROCESSES IN EVAPORATIVEFLUID COOLERS

In this paper heat and mass transfer processes in evaporative fluid co olers are discussed. A new mathematical model of evaporative fluid coo ling with countercurrent air flow is presented. The model consists of four ordinary differential equations with their boundary conditions an d some associated algebraic equations. A method of adjusting the model to geometrical arrangement which is used in bare-tube heat exchangers is proposed. The study presents a comparison of the results computed using an analytical model with the experimental results of the evapora tive water cooler test. A good agreement between the calculated and ex perimental values is achieved. The correction function of mass transfe r coefficient introduced into the analytical model improves this agree ment. (C) 1997 Elsevier Science S.A.