Name:
TO-2708 -- Short-Tube Refrigerant Flow Restrictors PDF
Published Date:
1982
Status:
Active
Publisher:
ASHRAE
Five short-tube refrigerant expansion devices, with L/D ratios from 7.5 to 11.9, were tested on a three-ton split-system heat pump. The test results show that first-stage choking has occurred at the liquid subcooling temperature of 22.2 C° (40.0 F°). However, there is no indication that second-stage choking has ever occurred.
Based on the test results, two correlations were formed. One is an orifice model with the orifice constant as a function of the pressure differential and the level of liquid subcooling. This model is for liquid subcooling less than 22.2 C° (40.0 F°). The other is a first-stage choking model, which is for a level of liquid subcooling above 22.2 C° (40.0 F°).
| File Size : | 1 file , 840 KB |
| Note : | This product is unavailable in Russia, Belarus |
| Number of Pages : | 13 |
| Product Code(s) : | D-TO-2708 |
| Published : | 1982 |
