Operational tests of the BNL 24.8 kW, 3.8 K helium refrigerator
Abstract
The BNL 24.8 kW refrigeration system is completely installed and major portions of the acceptance tests have been completed. So far, the equipment tested has performed at or above design levels. The room temperature helium compressor station has been completely tested and accepted. The two-stage oil injected screw compressor system exhibited an isothermal efficiency of 57% while delivering a helium flow in excess of 4400 g/s. Data on the performance of the make-up gas cryogenic purifier is given. The refrigerator turbomachinery, 13 expanders and three cold compressors, has been tested at room temperature for mechanical integrity and control stability. The first cooldown to operating temperature will be attempted in late August, 1985.
- Publication:
-
Presented at the Cryogenic Engineering Conference and International Cryogenic Materials Conference
- Pub Date:
- June 1985
- Bibcode:
- 1985cren.confS....B
- Keywords:
-
- Cryogenic Equipment;
- Helium;
- Performance Tests;
- Refrigerators;
- Compressors;
- Control Systems Design;
- Flow Velocity;
- Purification;
- Room Temperature;
- Engineering (General)