Abstract: According to general equations deducted from a model of heat and mass transfer of air and water in direct contact counter flow reported in the author’s previous work,the outlet parameters of air and water counter flow through a paper wet pad were calculated by using the MATLAB-software.Comparing the calculation results with experiment data of prior researchers, the deviation of calculated outlet air wet bulb temperature from experimental outlet air wet bulb temperature was less than 10%,the deviation of calculated outlet water temperature from experimental outlet water temperature was less than 9%,and the deviation of calculated outlet air dry bulb temperature from experimental outlet air dry bulb temperature was less than 10% when NTU_h was more than 0.6.The deviation of calculated outlet air dry bulb temperature from experimental outlet air dry bulb temperature was more than 10% when NTU_h was less than 0.6.The model calculations were in good agreement with experiments and the general equations could be used to design evaporation cooling equipment,such as wet pad and so on.