Problem Description

• LANL SPAR-8 heat pipe (3/8/85 test by Merrigan, Keddy and Sena)
• Lithium working fluid, Molybdenum pipe
• Lengths: 4.0 m total
  • 0.40 m evaporator
  • 0.09 m adiabatic
  • 3.51 m condenser
• Outside radius $\approx$ 1 cm
• Annular wick
• Initially frozen solid at 300 K
• Only heat output data available from experiment