Theoretical analysis of the pressure characteristics of the airflow in a rectangular supply duct with transversal slots has been described. The total and static pressures at various cross-sectional planes for such a rectangular duct in a textile mill were measured. Based on the results of the field survey, local loss coefficients for discharge airstream, Cc,b, and for straight-through main airstream/Cc,s, are plotted against volume flow ratio respectively. Their relationships are discussed. A proposed duct design procedure for rectangular duct with transversal slots using the balanced total pressure principle is introduced. The duct width and the total and static pressures of a sample supply duct with the volume flow rate and layout similar to the one that was surveyed are calculated and discussed.
Citation: ASHRAE Transactions, 1984, vol. 90, pt. 2A, Kansas City, MO
Product Details
- Published:
- 1984
- Number of Pages:
- 17
- File Size:
- 1 file , 960 KB
- Product Code(s):
- D-KC-2852
