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Heat Xfer/RadCon Progress 20Oct2006

Heat Xfer/RadCon Progress 20Oct2006. By John Tang Benton White. Heat Xfer Requirements. Max differential pressure: Across Clinac=6psi Across chiller=4.1psi Flow rate across piping=4.3GPM 30kW heat dissapation req’d. Heat Xfer Constraints. Flexible tubing for piping

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Heat Xfer/RadCon Progress 20Oct2006

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  1. Heat Xfer/RadCon Progress20Oct2006 By John Tang Benton White

  2. Heat Xfer Requirements • Max differential pressure: • Across Clinac=6psi • Across chiller=4.1psi • Flow rate across piping=4.3GPM • 30kW heat dissapation req’d

  3. Heat Xfer Constraints • Flexible tubing for piping • Fit in confined spaces • Allows for flexible placement of heat xfer components • Maintenance considerations • Access to essential components (ie: pump, reservoir tank) easier • Isolation valves

  4. Vendor Candidates

  5. Pipe Flow Analysis

  6. Pipe Flow Analysis (cont.)

  7. Pipe Flow Analysis (cont.) • Use Moody Diagram to find friction factors • Find Reynold’s Number, Re D=Diameter V=fluid velocity ρ= fluid density μ= dynamic fluid viscosity

  8. Pipe Flow Analysis (cont.) • Use of headloss calculations can be used to find differential pressure in piping hL=headloss in piping ν= specific volume of fluid

  9. Pipe Flow Analysis (cont.) • Determine mass flow rate of fluid

  10. RadCon Calcs • See excel spreadsheet

  11. RadCon • Safe operating distance for x-ray dose rate is 9km.

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