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Magnet cryogenic system update.

Magnet cryogenic system update. Yury Ivanyushenkov, RAL. Liquid nitrogen cooling system: Diagram. Drawn by Peter Titus. Cold vent line. Fill line. Flexible transfer lines available at CERN. Flow in. Flow return. CERN flexible transfer line as a fill line. Fill volume = 300 l of LN

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Magnet cryogenic system update.

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  1. Magnet cryogenic system update. Yury Ivanyushenkov, RAL

  2. Liquid nitrogen cooling system: Diagram Drawn by Peter Titus Cold vent line Fill line

  3. Flexible transfer lines available at CERN Flow in Flow return

  4. CERN flexible transfer line as a fill line Fill volume = 300 l of LN Geometry: 40 m of horizontal flexible transfer line with 4 bends Conclusion: this line is OK as a fill line if both pipes are in use

  5. CERN flexible transfer line as a cold vent line Geometry: 40 m of horizontal flexible transfer line with 4 bends Note: formula for compressible flow is used Conclusion: this line can not be used as a cold line at high mass flow rate.

  6. Cold vent line diameter calculation Question: what is the optimal diameter for the cold vent line ? Geometry: 40 m of horizontal flexible transfer line with 4 bends Note: formula for compressible flow is used Pressure drop of 1.34 bar for 500 g/s Line int diameter 70 mm

  7. Cryogenic system cost estimate (Preliminary and not official !)

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