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156 pages ; 23 cm
Topics: Refrigeration and refrigerating machinery -- Maintenance and repair -- Vocational guidance,...
Temperature control of radiation sensors, targets, and other critical components is a common requirement in modern scientific instruments. Conventional control systems use a heater and a temperature sensor mounted on the body to be controlled. For proportional control, the sensor provides feedback to circuitry which drives the heater with an amount of power proportional to the temperature error. It is impractical or undesirable to mount both a heater and a sensor on certain components such as...
Topics: NASA Technical Reports Server (NTRS), CIRCUIT DIAGRAMS, CONTROL EQUIPMENT, HEATING EQUIPMENT,...
30 p. : 23 cm
Topics: B.C. Bibb Stove Co. -- Catalogs, Heating -- Equipment and supplies -- Catalogs, Fireplaces --...
15 pages : 28 cm
Topics: United States Radiator Corporation -- Catalogs, Heating -- Equipment and supplies -- Catalogs,...
Over the past several years, efforts have been under way to design and develop an operationally flexible research facility for investigating the use of cross-field MHD accelerators as a potential thrust augmentation device for thermal propulsion systems, The baseline configuration for this high-power experimental facility utilizes a 1,5-MW, multi-gas arc-heater as a thermal driver for a 2-MW, MHD accelerator, which resides in a large-bore 2-tesla electromagnet. A preliminary design study using...
Topics: NASA Technical Reports Server (NTRS), PROPULSION SYSTEM CONFIGURATIONS, MAGNETOHYDRODYNAMICS,...
Information necessary to evaluate the design and assembly of a solar hot water system is presented. A prototype system designed for use in a single family dwelling is investigated in terms of the following subsystems: collector, storage, energy transport, and control.
Topics: NASA Technical Reports Server (NTRS), HEATING EQUIPMENT, SOLAR ENERGY, SOLAR HEATING, SYSTEMS...
717
717
Sep 20, 2010
09/10
by
Dyall, Kenneth G
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Dirac-Hartree-Fock calculations have been carried out on the ground states of the group IV monoxides GeO, SnO and PbO. Geometries, dipole moments and infrared data are presented. For comparison, nonrelativistic, first-order perturbation and relativistic effective core potential calculations have also been carried out. Where appropriate the results are compared with the experimental data and previous calculations. Spin-orbit effects are of great importance for PbO, where first-order perturbation...
Topics: ELASTOMERS, FLEXIBLE BODIES, HEATING EQUIPMENT, INDUCTION HEATING, MANUFACTURING, CAPACITORS,...
142 pg., ill., 24 cm., trade catalog
Topics: Stoves, Furnaces, Heating -- Equipment and supplies, Division 23
This report summarizes the technical effort of the Active Cooling for Enhanced Performance (ACEP) program sponsored by NASA. It covers the design, fabrication, and integrated systems testing of a jet engine auxiliary cooling system, or turbocooler, that significantly extends the use of conventional jet fuel as a heat sink. The turbocooler is designed to provide subcooled cooling air to the engine exhaust nozzle system or engine hot section. The turbocooler consists of three primary components:...
Topics: NASA Technical Reports Server (NTRS), DESIGN ANALYSIS, FABRICATION, PERFORMANCE TESTS, JET ENGINES,...
Solar powered heating and cooling system with possible application to residential homes is described. Operating principles of system are defined and illustration of typical energy storage and exchange system is provided.
Topics: NASA Technical Reports Server (NTRS), COOLING SYSTEMS, ENERGY TRANSFER, HEAT PUMPS, HEAT...
The principles involved in food heating are discussed. The food heating system for Skylab is described. Thermal models of nutrient materials are analyzed including models in zero-g and low pressure conditions. Results are presented of parametric studies to establish the effect of individual parameters on the thermal response of the system.
Topics: NASA Technical Reports Server (NTRS), HEAT TRANSFER, NUTRIENTS, THERMODYNAMIC PROPERTIES,...
A quartz lamp box, a quartz lamp annular rig, and a low pressure liner cyclic can rig planned for liner cyclic tests are described. Special test instrumentation includes an IR-TV camera system for measuring liner cold side temperatures, thin film thermocouples for measuring liner hot side temperatures, and laser and high temperature strain gages for obtaining local strain measurements. A plate temperature of 2,000 F was obtained in an initial test of an apparatus with three quartz lamps. Lamp...
Topics: NASA Technical Reports Server (NTRS), ENGINE TESTS, LININGS, TEST FACILITIES, TEST STANDS, THERMAL...
The use of resistance heaters to simulate heat from fission allows extensive development of fission systems to be performed in non-nuclear test facilities, saving time and money. Resistance heated tests on a module has been performed at the Marshall Space Flight Center in the Propellant Energy Source Testbed (PEST). This paper discusses the experimental facilities and equipment used for performing resistance heated tests. Recommendations are made for improving non-nuclear test facilities and...
Topics: NASA Technical Reports Server (NTRS), TEST FACILITIES, FUSION (MELTING), FABRICATION, RESEARCH...
Technology is knowledge, the technical "know-how" employed by a society to produce things that improve the quality of human life. Like other forms of knowledge, it is transferable; once developed, technology can be applied to uses different-and often remote-from the original application. Thus, the technology that NASA has developed in more than two decades of space and aeronautical research constitutes a valuable national resource, a bank of knowledge available for secondary...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE TECHNOLOGY TRANSFER, NASA PROGRAMS, AERONAUTICS,...
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476
Jul 11, 2010
07/10
by
Baranov, A. V.; Liberzon, E. A.; Popova, T. I
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A study was made of the composition of the liquid phase formed upon absorption of nitrogen dioxide by sulfuric acid as a function of the concentration of oxides in the gas, temperature and concentration of sulfuric acid. It was found that in the process of absorption of NO2, mixtures consisting of HNO3 HNOSO4 H2SO4 H2O are formed, containing quite definite maximum concentrations of HNOSO4, dependent on temperature, NO2 concentration in the gas and concentration of absorbing sulfuric acid. This...
Topics: REMOTE SENSORS, TEMPERATURE MEASUREMENT, WIND MEASUREMENT, CRYSTAL OSCILLATORS, HEATING EQUIPMENT,...
205
205
May 28, 2011
05/11
by
Martin, Mikulas M., Jr.; Sumpter, Ro
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In a previous paper, a new merit function for determining the strength performance of flawed composite laminates was presented. This previous analysis was restricted to circular hole flaws that were large enough that failure could be predicted using the laminate stress concentration factor. In this paper, the merit function is expanded to include the flaw cases of an arbitrary size circular hole or center crack. Failure prediction for these cases is determined using the point stress criterion....
Topics: TEST FACILITIES, FUSION (MELTING), FABRICATION, RESEARCH FACILITIES, PROPELLANTS, HEATING EQUIPMENT
This report is the final experiment report for the TCSE and summarizes many years of hardware development and analyses. Also included are analyses presented in a number of TCSE papers that were prepared and given at scientific conferences including three LDEF Post-Retrieval Symposiums.
Topics: NASA Technical Reports Server (NTRS), LONG DURATION EXPOSURE FACILITY, TEMPERATURE CONTROL, CONTROL...
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1 volume (various pagings) : 29 cm
Topics: Heating -- Equipment and supplies -- Handbooks, manuals, etc, Ventilation -- Handbooks, manuals,...
Electric Power Plant costs and efficiencies are presented for two basic liquid-metal cycles corresponding to 922 and 1089 K (1200 and 1500 F) for a commercial applications using direct coal firing. Sixteen plant designs are considered for which major component equipment were sized and costed. The design basis for each major component is discussed. Also described is the overall systems computer model that was developed to analyze the thermodynamics of the various cycle configurations that were...
Topics: NASA Technical Reports Server (NTRS), ELECTRIC POWER PLANTS, ENERGY CONVERSION EFFICIENCY, ENERGY...
The goals in this program for advanced czochralski growth process to produce low cost 150 kg silicon ingots from a single crucible for technology readiness are outlined. To provide a modified CG2000 crystal power capable of pulling a minimum of five crystals, each of approximately 30 kg in weight, 150 mm diameter from a single crucible with periodic melt replenishment. Crystals to have: resistivity of 1 to 3 ohm cm, p-type; dislocation density below 1- to the 6th power per cm; orientation...
Topics: NASA Technical Reports Server (NTRS), AUTOMATIC CONTROL, CRUCIBLES, CRYSTAL GROWTH, CZOCHRALSKI...
A Technical Interchange meeting was held between the payload developers for the Boiling eXperiment Facility (BXF) and the NASA Safety Review Panel concerning operational anomaly that resulted in overheating one of the fluid heaters, shorted a 24VDC power supply and generated Perfluoroisobutylene (PFiB) from Perfluorohexane.
Topics: NASA Technical Reports Server (NTRS), TOXICITY, ACCIDENT INVESTIGATION, SPACE STATION PAYLOADS,...
A paper describes a modular design for new controllers for infrared heating during cruise stage solar thermal vacuum test of the Mars Science Laboratory. The controllers had to be easy to use and maintain, used with a wide variety of different control schemes, and made using commercial off-the-shelf (COTS) components wherever possible.
Topics: NASA Technical Reports Server (NTRS), CONTROLLERS, HEATING, THERMAL VACUUM TESTS, CONTROL SYSTEMS...
Cox Sterile Products, Inc.'s Rapid Heat Transfer Sterilizer employs a heat exchange process that induces rapid air movement; the air becomes the heat transfer medium, maintaining a uniform temperature of 375 degrees Fahrenheit. It features pushbutton controls for three timing cycles for different instrument loads, a six-minute cycle for standard unpackaged instruments, eight minutes for certain specialized dental/medical instruments and 12 minutes for packaged instruments which can then be...
Topics: NASA Technical Reports Server (NTRS), HEATING EQUIPMENT, STERILIZATION, TECHNOLOGY UTILIZATION,...
In this work a building block type of approach is used so that a basic understanding of the processes that contribute to nucleate boiling heat fluxes under microgravity conditions can be developed. This understanding will lead to development of a mechanistic model for nucleate boiling heat transfer which could eventually be used as a design tool in space applications. Task Description Task 1: Fabrication of the Experimental Setup. Under this task, the test section and liquid holding and viewing...
Topics: NASA Technical Reports Server (NTRS), NUCLEATE BOILING, HEAT TRANSFER, MICROGRAVITY, THIN FILMS,...
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5.0
Jun 2, 2020
06/20
by
Oxlade, Chris
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1 volume : 22 cm
Topics: Dwellings -- Heating and ventilation -- Juvenile literature, Heating -- Equipment and supplies --...
96 pg., ill., 28 cm., trade catalogs
Topics: Heating -- Equipment and supplies -- Catalogs, Heating -- Equipment and supplies -- Division 23
22 p., ill., 31 cm, trade catalog
Topics: furnace, Division 23, HVAC, fuel-fired furnace, heating equipment
An experimental study of incipient boiling in short-term microgravity and with a/g = +/- 1 for pool boiling was performed. Calibrated thin gold films sputtered on a smoothly polished quartz surface were used simultaneously for thermal-resistance measurements and heating of the boiling surface. The gold films were used for both transient and quasi-steady heating surface temperature measurements. Two test vessels were constructed for precise measurement and control of fluid temperature and...
Topics: NASA Technical Reports Server (NTRS), HEATING EQUIPMENT, METAL FILMS, MICROGRAVITY, NUCLEATE...
A thermal infrared detector system includes a heat sink, a support member, a connection support member connecting the support member to the heat sink and including a heater unit is reviewed. An infrared detector element is mounted on the support member and a temperature signal representative of the infrared energy contacting the support member can then be derived by comparing the temperature of the support member and the heat sink. The temperature signal from a support member and a temperature...
Topics: NASA Technical Reports Server (NTRS), INFRARED DETECTORS, THERMAL CONDUCTIVITY, TEMPERATURE...
A hyper-thermal environment simulator is described for hot hydrogen exposure of nuclear thermal rocket material specimens and component development. This newly established testing capability uses a high-power, multi-gas, segmented arc-heater to produce high-temperature pressurized hydrogen flows representative of practical reactor core environments and is intended to serve. as a low cost test facility for the purpose of investigating and characterizing candidate fueUstructura1 materials and...
Topics: NASA Technical Reports Server (NTRS), ARC HEATING, HEATING EQUIPMENT, HIGH TEMPERATURE GASES,...
Schedules and technical progress in the development of eight prototype solar heating and combined solar heating and cooling systems are reported. Particular emphasis is given to the analysis and preliminary design for the cooling subsystem, and the setup and testing of a horizontal thermal energy storage tank configuration and collector shroud evaluation.
Topics: NASA Technical Reports Server (NTRS), COOLING SYSTEMS, ENERGY TECHNOLOGY, HEATING EQUIPMENT, SOLAR...
Development and installation of two commercial solar heating and hot water systems are reported. The systems consist of the following subsystems: collector, storage, transport, hot water, auxiliary energy and controls. General guidelines are provided which may be utilized in development of detailed installation plans and specifications. In addition, operation, maintenance and repair of a solar heating and hot water system instructions are included.
Topics: NASA Technical Reports Server (NTRS), BUILDINGS, ENERGY POLICY, HEATING EQUIPMENT, INSTALLATION...
Aspects of incorporating a thermal energy transport system (ETS) into a field of parabolic dish collectors for industrial process heat (IPH) applications were investigated. Specific objectives are to: (1) verify the mathematical optimization of pipe diameters and insulation thicknesses calculated by a computer code; (2) verify the cost model for pipe network costs using conventional pipe network construction; (3) develop a design and the associated production costs for incorporating risers and...
Topics: NASA Technical Reports Server (NTRS), CONCENTRATORS, HEATING EQUIPMENT, PIPELINES, PROCESS HEAT,...
An investigation was performed to study flow improver additives and scale-model fuel heating systems for use with aviation hydrocarbon fuel at low temperatures. Test were performed in a facility that simulated the heat transfer and temperature profiles anticipated in wing fuel tanks during flight of long-range commercial aircraft. The results are presented of experiments conducted in a test tank simulating a section of an outer wing integral fuel tank approximately full-scale in height, chilled...
Topics: NASA Technical Reports Server (NTRS), ADDITIVES, AIRCRAFT FUELS, FUEL TANKS, HEATING EQUIPMENT,...
Cyclic convective heating test results show that all surface insulation materials tested exhibit a wide range of surface emittance and catalytic activity depending on their surface coatings. Coatings have a significant effect on the overall material response depending on boundary layer characteristics.
Topics: NASA Technical Reports Server (NTRS), COMPOSITE MATERIALS, CONVECTIVE HEAT TRANSFER, THERMAL...
Trade catalog, Text, Illus, CCA ID:93-B1183, ca. 1843, 28 p, 19 cm
Topics: Stoves, Furnaces, Ventilators, Bathtubs, Garden vases, Division 10, Specialties, Fireplaces and...
Trade catalog, Text, Illus, CCA ID:93-B844, ca. 1920, 449 p, 21 cm
Topics: Division 22, Plumbing, Plumbing Pipes and Pumps, Plumbing Equipment, Plumbing Fixtures, Division...
[41] leaves : 23 x 29 cm
Topics: General Gas-Light Company -- Catalogs, Heating -- Equipment and supplies -- Catalogs, Gas...
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698
May 29, 2011
05/11
by
Markley, F. Landis; Mortari, Daniel
texts
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This paper contains a critical comparison of estimators minimizing Wahba's loss function. Some new results are presented for the QUaternion ESTimator (QUEST) and EStimators of the Optimal Quaternion (ESOQ and ESOQ2) to avoid the computational burden of sequential rotations in these algorithms. None of these methods is as robust in principle as Davenport's q method or the Singular Value Decomposition (SVD) method, which are significantly slower. Robustness is only an issue for measurements with...
Topics: HEATING EQUIPMENT, FISSION, TEST FACILITIES, RESEARCH FACILITIES, POWER REACTORS, PROPULSION
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228
May 30, 2011
05/11
by
Smart, Michael K.; Trexler, Carl A.; Goldman, Allen L
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A rocket based combined cycle inlet geometry has undergone wind tunnel testing and computational analysis with Mach 4 flow at the inlet face. Performance parameters obtained from the wind tunnel tests were the mass capture, the maximum back-pressure, and the self-starting characteristics of the inlet. The CFD analysis supplied a confirmation of the mass capture, the inlet efficiency and the details of the flowfield structure. Physical parameters varied during the test program were cowl...
Topics: NUCLEATE BOILING, MARANGONI CONVECTION, WALL TEMPERATURE, MICROGRAVITY, HEAT TRANSFER, SOUNDING...
Testing to evaluate Redesigned Solid Rocket Motor igniter heater electromagnetic interference (EMI) effects on the Safe and Arm (S and A) device was completed. It was suspected that EMI generated by the igniter heater and it's associated electromechanical relay could cause a premature firing of the NASA Standard Initiators (NSIs) inside the S and A. The maximum voltage induced into the NSI fire lines was 1/4 of the NASA specified no-fire limit of one volt (SKB 26100066). As a result, the...
Topics: NASA Technical Reports Server (NTRS), ELECTROMAGNETIC INTERFERENCE, HEATING EQUIPMENT, IGNITERS,...
The design and operation of the closed cycle MHD facility is discussed and results obtained in recent experiments are presented. The main components of the facility are a compressor, recuperative heat exchanger, heater, nozzle, MHD channel with 28 pairs of thoriated tungsten electrodes, cesium condenser, and an argon cooler. The facility has been operated at temperatures up to 2100 K with a cesium-seeded argon working fluid. At low magnetic field strengths, the open circuit voltage, Hall...
Topics: NASA Technical Reports Server (NTRS), CESIUM, MAGNETOHYDRODYNAMIC GENERATORS, NONEQUILIBRIUM...
The solar collectors shown are elements of domestic solar hot water systems produced by Solar One Ltd., Virginia Beach, Virginia. Design of these systems benefited from technical expertise provided Solar One by NASA's Langley Research Center. The company obtained a NASA technical support package describing the d e sign and operation of solar heating equipment in NASA's Tech House, a demonstration project in which aerospace and commercial building technology are combined in an energy- efficient...
Topics: NASA Technical Reports Server (NTRS), SOLAR COLLECTORS, SOLAR HEATING, STRUCTURAL DESIGN, HEATING...
The paper describes the consolidation of NASA's high powered arc-jet testing at a single location. The existing plasma arc-jet wind tunnels located at the Johnson Space Center were relocated to Ames Research Center while maintaining NASA's technical capability to ground-test thermal protection system materials under simulated atmospheric entry convective heating. The testing conditions at JSC were reproduced and successfully demonstrated at ARC through close collaboration between the two...
Topics: NASA Technical Reports Server (NTRS), CONSOLIDATION, ARC HEATING, AERODYNAMIC HEATING, CONTROL...
Proposed heater uses its own temperature coefficient for sensing function. Heating power is supplied from current source, heater voltage containing temperature information. Dynamic stability is very high since there is no thermal lag as would exist with separate heater and sensor.
Topics: NASA Technical Reports Server (NTRS), ANALOG CIRCUITS, DYNAMIC STABILITY, FEEDBACK CONTROL, HEATING...
Trade catalog, Text, Illus, CCA ID:86-B4020, ca.1891, 130 p, 26 cm
Topics: Division 23, HVAC, Central Heating Equipment, furnaces, HVAC Air Distribution, Air Outlets and...
A prototype solar heating and hot water system using air as the collector fluid and a pebble bed for heat storage was designed for installation into a single family dwelling. The system, subsystem, and installation requirements are described. System operation and performance are discussed, and procedures for sizing the system to a specific site are presented.
Topics: NASA Technical Reports Server (NTRS), DESIGN ANALYSIS, ENERGY POLICY, HEATING EQUIPMENT, SOLAR...
A closed hydronic solar system is reported for space and hot water heating. Design, performance, and hardware specifications are presented sufficient for architectural engineers and contractors to procure, install, operate, and maintain a similar solar application.
Topics: NASA Technical Reports Server (NTRS), EQUIPMENT SPECIFICATIONS, SOLAR HEATING, SYSTEMS ENGINEERING,...
Information used to evaluate the design of a solar heating, cooling, and domestic hot water system is given. A conventional heat pump provides summer cooling items as the design data brochure, system performance specification, system hazard analysis, spare parts list, and detailed design drawings. A solar system is installed in a single-family dwelling at Akron, Ohio, and at Duffield, Virginia.
Topics: NASA Technical Reports Server (NTRS), SOLAR COOLING, SOLAR HEATING, SOLAR HOUSES, SYSTEMS...
A NASA RTTC assisted International Thermal Packaging (ITP) in the identification of a NASA-developed synthetic polymer that can absorb 1,000 times its weight in water. The desiccant was used in the manufacture of a self-chilling can, a major innovation for packaging food and beverages. The refrigeration device is a small cylinder, fully incorporated into the can. When used in beverage containers, the top of the can is popped, the internal carbonization pressure is relieved, and the...
Topics: NASA Technical Reports Server (NTRS), ABSORBENTS, DESICCANTS, COOLING SYSTEMS, HEATING EQUIPMENT,...
