Advances in Cryogenic Engineering, Volume 18: Proceedings of the 1972. Cryogenic Engineering Conference. National Bureau of Standards. Boulder, Colorado. August 9-11, 1972

The National Bureau of Standards Boulder Laboratories at Boulder, Colorado once again served as the host for the 1972 Cryogenic Engineering Conference. For the Cryogenic Engineering Conference it was like coming horne, for it was at the NBS Boulder Laboratories that the Cryogenic Engineering Conference was first conceived and held m 1954m connection with the dedication ofthe NBS Boulder Laboratories by President Dwight D. Eisenhower. The Cryogenic Engineering Conference IS grateful for the continuing support that the National Bureau of Standards has gIVen over the years, and which was expanded on July 1, 1971 when the NBS Boulder Laboratories assumed the secretariat function of the Conference from the National Academy of Sciences. Because of common interests in heat transfer, the 1972 Cryogemc Engineering Conference worked with the 13th National Heat Transfer Conference to develop a joint program m heat transfer. A majority ofthe papers presented in this cooperative effort are incIuded m V olume 18 of the Advances zn Cryogenic Engineerzng through the kmd permission ofthe 13th NatIOnal Heat Transfer Conference and are acknowl­ edged accordingly. Front Matter....Pages i-xiii LNG—U. S. and Foreign Traffic—An Overview....Pages 1-8 Cryogenic Technology and Scaleup Problems of Very Large LNG Plants....Pages 9-26 Heat Transfer Problems in Liquefied Natural Gas Plants....Pages 27-31 Explosive Boiling of Liquefied Hydrocarbon/Water Systems....Pages 32-41 Coiled Tubular Heat Exchangers....Pages 42-51 Effects of Maldistribution on the Performance of Multistream, Multipassage Heat Exchangers....Pages 52-64 Combined Buoyancy and Flow Direction Effects on Saturated Boiling Critical Heat Flux in Liquid Nitrogen....Pages 65-72 Interpretation and Correlation of Deviations from a Hydrodynamic Channel Boiling Theory of Data on Nitrogen and Hydrogen in Forced and Free Flow Boiling....Pages 73-80 Cryogenic Thermal Stratification and Interfacial Phenomena for Heated Tanks During Prolonged Orbital Flight....Pages 81-91 Miniature Uranium Fuel Plates Cooled by Liquid Helium for Irradiation Damage Studies....Pages 92-95 Development Program for a Liquid Methane Heat Pipe....Pages 96-102 Heat Transfer in Microsphere Cryogenic Insulation....Pages 103-111 Analysis of Thermal Diffusivity Evaluation under Transient Conditions for Powder Insulations....Pages 112-117 Lateral Heat Transfer in Cryogenic Multilayer Insulation....Pages 118-123 An Analytical and Experimental Evaluation of Shadow Shields and Their Support Members....Pages 124-131 Liquid Flow Rates of Superfluid Helium II During Thermomechanical Pumping Through Porous Media....Pages 132-140 Helium Flow Through Filters....Pages 141-149 Choked Flow of Fluid Nitrogen with Emphasis on the Thermodynamic Critical Region....Pages 150-161 Geysering Inhibitor for Vertical Cryogenic Transfer Piping....Pages 162-169 The Tensile Properties of Aluminum Alloys Formed at Cryogenic Temperatures....Pages 170-174 Mechanical and Physical Properties of Several Advanced Metal-Matrix Composite Materials....Pages 175-183 Tensile Properties of Polyurethane and Polystyrene Foams from 76 to 300 K....Pages 184-193 Compressive Properties of Polyurethane and Polystyrene Foams from 76 to 300 K....Pages 194-201 Development of a Method for Direct Determination of Dew Point Loci of Methane-Heavier Hydrocarbon Mixtures at Low Temperatures and Elevated Pressures....Pages 202-207 Thermodynamic Properties of Propane: Vapor-Liquid Coexistence Curve....Pages 208-219 Thermodynamic Properties of Propane: PVT Surface and Corresponding Thermodynamic Properties....Pages 220-233 Cryogenic Thermal Properties from the UM Fluids Laboratory....Pages 234-247 An Equation of State for Oxygen and Nitrogen....Pages 248-255 Representation of PVT Data by Means of a Universal State Equation for Simple Pure Fluids....Pages 256-263 Flory-Huggins Entropy—Effect of Liquid Expansion....Pages 264-270 Thermal Conductivity of Nylons and Apiezon Greases....Pages 271-279 Thermal Conductivity Measurements of Liquid and Dense Gaseous Methane....Pages 280-288 Cryogenic Instrumentation at and above Liquid Hydrogen Temperature—Present and Future....Pages 289-300 Cryogenics below Liquid Hydrogen Temperature....Pages 301-316 Temperature and Level Control in a Liquid Helium II Cryostat....Pages 317-322 Continuous Liquid Level Measurements with Time-Domain Reflectometry....Pages 323-327 The Cryobridge, an Automatic AC Potentiometer for Resistance Thermometry at Low Power Dissipation....Pages 328-333 The Use of Difference Thermocouples in Cryogenic Systems....Pages 334-338 A Combustion-Heated, Thermally Actuated Vuilleumier Refrigerator....Pages 339-351 Selected Vuilleumier Refrigerator Performance Characteristics....Pages 352-359 Refrigeration for the Livermore Superconducting Levitron....Pages 360-367 Spacecraft Compatibility of Cryogenic Refrigerators....Pages 368-371 MIT—EEI Superconducting Synchronous Machine....Pages 372-381 A 60-in.-Diameter, Levitated Super-Conducting Coil Thermally Shielded by Lead....Pages 382-387 Vibration Simulation of a Space Probe Model Superconducting Energy Storage Coil....Pages 388-393 Five-MVA Superconducting Generator Development....Pages 394-399 Conductors for Superconducting Electrical Machines....Pages 400-406 Thermal Conductivity of Braided Superconductor Systems....Pages 407-415 Field and Current Measurements and Calculations in a Superconducting Tape-Wound Magnet....Pages 416-422 Critical Current of a 50 at. % Nb-Ti Alloy as a Function of Temperature and Magnetic Field....Pages 423-426 Atomic Hydrogen Stabilization by High Magnetic Fields and Low Temperatures....Pages 427-434 Penultimate Static Pressure Containment Considerations and Possible Applications to Metallic Hydrogen Preparation....Pages 435-440 Prospects for Obtaining Metallic Hydrogen with Spherical Presses....Pages 441-446 High-Density Hydrogen Research....Pages 447-451 A New Thermal Means for Gas Separation....Pages 452-459 Cryopumped, Condensed Hydrogen Jet Target for the National Accelerator Laboratory Main Accelerator....Pages 460-466 Concentric Pulse Tube Analysis and Design....Pages 467-475 Low-Temperature Nitrogen Ejector Performance....Pages 476-485 Long-Term Cryogenic Space Storage System....Pages 486-493 A Low-Heat-Leak, Temperature-Stabilized Support....Pages 494-496 Helium Conservation Using Solid Nitrogen....Pages 497-501 Clean Energy Via Cryogenic Technology....Pages 502-524 Back Matter....Pages 525-533