Abstract:

The heat and moisture exchange system through downstream water-air processing in the dynamic coordinate is studied, and the relationship between fogged drop diameter and water jet pressure is determined. By applying the concept of relative speed，a two phase model in the spray chamber and the equation with maximum effectiveness of heat and moisture exchange are established. It has been proved by theoretical analysis and the experimental data that pressure has considerable effect on the equation of heat and moisture exchange. When the hydraulic pressure is less than 157 Pa, experimental results fit well with theoretical results with error less than 6%. When the hydraulic pressure is more than 157 Pa, greater error is observed. To reduce this error, corrections are made for the equation with the equation with the maximum effectiveness when hydraulic pressure is 157 Pa. After correction, the experimental result is in good agreement with the theoretical value with the error within 7%.