In this paper, the effect of nozzle exit velocities on the transition point between zone 3 and zone 4 (as defined in the ASHRAE Handbook) was studied for a nozzle (D = 41 mm) with different outlet velocities. Combined with the results reevaluated from Nottage (1951) and Malmström et al. (1992), the measurement results show that for air jets with Uo < 10 m/s, the end centerline velocities of zone 3 could be proportional to the outlet velocities. For air jets with Uo > 10 m/s, the end centerline velocities are relatively constant, and this tendency seems to be independent of the outlet size. Some measurement results for zone 4 are also presented.
Units: SI
Citation: ASHRAE Transactions, vol. 106, pt. 2
Product Details
- Published:
- 2000
- Number of Pages:
- 7
- File Size:
- 1 file , 360 KB
- Product Code(s):
- D-7201
