Refrigerated transmission line study. Volume 1 - Microwave analysis and measurements Final report
Microwave analysis and measurements in study of reducing antenna noise by refrigerating waveguides and waveguide components
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Microwave analysis and measurements in study of reducing antenna noise by refrigerating waveguides and waveguide components
Design and construction of prototype spacecraft cryogenic refrigerator for infrared detector cooling
Refrigeration and constricting band for early treatment of pit viper snakebite
Solid cryogen refrigeration system for IR detector cooling in spacecraft applications
Liquid nitrogen for refrigerated storage of shrimp
Three-stage Gifford-MacMahon cycle regenerative refrigerator in 6.5 K region, using lead shot matrices for coldest regenerators
Intermittent type silica gel adsorption refrigerator for providing temperature control for spacecraft components
Tabulated values of cavitation b-factor for helium, H2, N2, F2, O2, refrigerant 114, and H2O
Data on external refrigeration systems for space storage of cryogens for long periods
Method and apparatus for producing very low temperature refrigeration based on gas pressure balance
Dual solid cryogens for spacecraft refrigeration insuring low temperature cooling for extended periods
Mathematical analysis of Vuilleumier refrigerator and use of computer program for solution of resulting equations
Evaluation of cryogenic refrigeration systems for space applications
Handbook of external refrigeration systems for long term cryogenic storage
Mobile transport system, that can be carried by truck and parked in storage area, consists of an inner container capable of holding 363 kg of diborane and an external, dual refrigeration unit which uses liquid nitrogen and Freon-14.
An experimental investigation was conducted in a five-second zero gravity facility to examine the effects of venting initially saturated Refrigerant 11 from a cylindrical container (15-cm diameter) under reduced gravitational conditions. The system Bond numbers studied were 0 (weightlessness), 9 and 63; the liquid exhibited a nearly zero-degree contact angle on the container surface. During the venting process, both liquid-vapor interface and liquid bulk vaporization occurred. The temperature of the liquid in the immediate vicinity of the liquid-vapor interface was found to decrease during venting, while the liquid bulk temperature remained constant. Qualitative observations of the effects of system acceleration, vent rate, and vapor volume presented. Quantitative information concerning the ullage pressure decay during low gravity venting is also included.
Compatibility of the Brayton power and refrigeration cycles is considered. Performance of the power- and cryo-loop is plotted against compressor pressure ratio. The power- and cryo-loop performance is determined by dividing the compressor work between the two loops in proportion to mass flow rate. Cycle efficiency is defined as the ratio of shaft power available in the power loop to the net thermal input from the heat source. The available shaft power is the excess of the power turbine work over the compressor work needed in the power loop. The best power loop efficiency occurred at a compressor pressure ratio of 1.8, and the best cryo-loop performance was at a compressor pressure ratio of 2.1. Good individual cycle performance occurred over a fairly large range in compressor pressure ratio.
An investigation was conducted of the peak heat flux on cylindrical heaters in a fluid flowing perpendicular to the major axis of the heater. The test fluids were water and Refrigerant 113. Heaters of 0.049 to 0.181 cm diameter were tested over a fluid velocity range of 10.1 to 81.1 cm/sec. The experimental results were observed to fall within two regions based on the vapor removal geometry: jets or sheets. Mathematical models for each region successfully correlated the data for both fluids.