D0 Silicon Upgrade: Liquid Nitrogen Subcooler Coil Sizing for D-Zero Upgrade
The raw calculations are attached as Appendix A. The calculations provide the analysis of the heat transferred while the LN{sub 2} subcooler is in use. In order to achieve an acceptable conclusion, the assumption of a fully developed thermal boundary layer was made. The hot fluid or the fluid condensing on the inside surface will determine the rate of heat transfer because A{sub o} = A{sub i} and h{sub o}A{sub o} >> h{sub i}A{sub i}. The conclusion drawn is to use a 1/2-inch OD copper tube wound approximately 8 times about an 8-inch diameter circle. There are also calculations concerning the size of the nitrogen supply and subcooler vent. The maximum mass flow rate was determined as 52.5 g/s and the sizing of the nitrogen supply and subcooler vent should be chosen accordingly.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1033297
- Report Number(s):
- FERMILAB-D0-EN-434; TRN: US1200374
- Country of Publication:
- United States
- Language:
- English
Similar Records
D0 Silicon Upgrade: Liquid Nitrogen Valve Sizing for D-Zero Upgrade
D0 Silicon Upgrade: Vapor Pressure Thermometry System Near LN2 Subcooler