Almost all applications of refrigerating compressors require some kind of capacity control. This may be caused by a consistently variable cooling load or simply by overdesign of the system. The capacity can be controlled by several methods. The most common are intermittent running, variable speed, hot.gas bypass, suction-line throttling, and suction-valve unloading.
Since no detailed comparisons of capacity-control systems were available, a systematic study of the thermodynamic performance of t hree capacity-control systems was undertaken. The results of these studies of suction-valve unloading, suction-line throttling, and hot-gas bypass are presented in this paper in the form of closed-form expressions and parametric curves.
Citation: ASHRAE Transactions, Volume 77, Part 1, Philadelphia, PA
Product Details
- Published:
- 1971
- Number of Pages:
- 5
- File Size:
- 1 file , 410 KB
- Product Code(s):
- D-PH-2182
