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This paper describes an experimental program that was designed to quantify the rate of spray water evaporation intoa warm, dry airstream with application to a proposed inflatable fabric duct cooling tower. The inflatable nature of the fabric duct cooling tower promotes rapid deployment, and provides low energy cooling for human comfort in hot, arid environments. The test apparatus measured the mass transfer coefficient for dispersed water droplets flowing parallel to aheated air stream. The data reduction approach employed the analogy between forced convection heat transfer and evaporation mass transfer. For a specific misting nozzle used in a prototype inflatable fabric evaporative cooling tower, the experiments demonstrated that the average test section Sherwood number was a power-law function of the water-to-air mass flow rate ratio, with the exponent equal to 0.70. Likewise the resulting Sherwood number was inversely proportional to the downstream distance from the spray water injection.
Citation: 2020 Winter Conference, Orlando, FL Technical Papers
Product Details
- Published:
- 2020
- Number of Pages:
- 13
- Units of Measure:
- Dual
- File Size:
- 1 file , 1.8 MB
- Product Code(s):
- D-OR-20-024
