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  • 1
    Electronic Resource
    Electronic Resource
    Measurements of the thermal conductivity and viscosity of liquid propylene (1984)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 29 (1984), S. 56-59 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je00035a019
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  • 2
    Electronic Resource
    Electronic Resource
    A thermoacoustic Stirling heat engine (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 399 (1999), S. 335-338 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Electrical and mechanical power, together with other forms of useful work, are generated worldwide at a rate of about 1012 watts, mostly using heat engines. The efficiency of such engines is limited by the laws of thermodynamics and by practical considerations such as the cost of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/20624
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  • 3
    Electronic Resource
    Electronic Resource
    A Stirling engine with a liquid working substance (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 4157-4172 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A theoretical and experimental study of a Stirling engine using a liquid (propylene) as its working substance is presented. This is the first experimental work on liquid Stirling engines (or Malone engines) since the 1920s. Liquid-Stirling technology appears advantageous to conventional freon-based Rankine-cycle technology in many applications. The theory developed here is simple, intuitive, and modular because of the nature of liquid working fluids and because the temperature spanned by liquid Stirling engines is not large. The experimental engine is extremely versatile, and can operate as either a heat pump or prime mover. Extensive measurements with it are in substantial agreement with the simple theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343321
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  • 4
    Electronic Resource
    Electronic Resource
    Liquid-sodium thermoacoustic engine (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 355-357 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have constructed a thermoacoustic engine that uses liquid sodium as its working substance. The engine generates acoustic power using heat flowing from a high-temperature source to a low-temperature sink. The measured performance of this engine disagrees significantly with numerical calculations based on our theory of thermoacoustic engines. The efficiency of the engine is a substantial fraction of Carnot's efficiency, and its power density is comparable to that of the conventional heat engines in widespread use. Thus we expect this type of engine to be of practical, economic importance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99913
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  • 5
    Electronic Resource
    Electronic Resource
    Generation of superfluid vortex turbulence by high-amplitude second sound in4He (1990)
    Springer
    Journal of low temperature physics 78 (1990), S. 351-373 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High-amplitude second sound in superfluid4He is used to generate vortex turbulence. By the use of a novel resonator designed to avoid nonlinear effects, a steady-state ac counterflow field is produced with amplitudes high enough to generate the turbulent state. The transition to the turbulent state shows hysteresis similar to that observed in dc superflow measurements. Critical velocities were measured as a function of both temperature and frequency. The frequency dependence agrees with the predictions of dynamic scaling theory, and the temperature dependence is the same as that observed in dc counterflow experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683316
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  • 6
    Electronic Resource
    Electronic Resource
    Uniform temperature cooling power of the superfluid Stirling refrigerator (1996)
    Springer
    Journal of low temperature physics 103 (1996), S. 273-293 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Uniform temperature cooling power measurements of a superfluid Stirling refrigerator are presented for3He-4He molar concentrations of 5.9%, 17% and 36% and for temperatures between 0.37 K and 1.4 K. The results are compared to an ideal Fermi gas model and to a more general thermodynamic model. The Fermi model agrees well with the 5.9% concentration data; however, the more elaborate model is needed for higher concentration mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00754789
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  • 7
    Electronic Resource
    Electronic Resource
    Thermal expansion coefficient of 3He near 1 mK (1981)
    Springer
    Journal of low temperature physics 43 (1981), S. 517-520 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: A measurement of the thermal expansion coefficient of 3He at 0 bar from 0.6 to 3 mK is presented. At the superfluid transition the expansion coefficient changes by 1.1 × 10\s-6 mK\s-1. This change is consistent with predictions based on thermodynamic arguments and existing heat capacity data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00115612
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  • 8
    Electronic Resource
    Electronic Resource
    Fast growth of 3He-B into supercooled 3He-A (1992)
    Springer
    Journal of low temperature physics 86 (1992), S. 325-347 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: We report results of an investigation of the growth of 3He-B into supercooled, magnetized 3He-A. The B-phase growth was observed magnetically, with the difference between A- and B-phase susceptibilities generating signals in SQUID magnetometers. The form of the magnetization signal associated with the moving interface evolved radically with increased supercooling, indicating that the rapidly moving interface is no longer a simple boundary between equilibrium B phase and metastable equilibrated A phase. Magnetization changes were observed to travel through the superfluid as fast as 800 cm/s. Several features of the measurements can be explained by a model based on magnetization transport by a critical-velocity-limited spin super current. Other features of the data remain unexplained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121502
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  • 9
    Electronic Resource
    Electronic Resource
    Slow growth of 3He-B into hypercooled 3He-A (1992)
    Springer
    Journal of low temperature physics 87 (1992), S. 35-61 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report observations of the first-order phase transition between the two superfluid phases of 3He. We supercool a long cylindrical sample of the higher-temperature A phase in a magnetic field in a simple dc magnetometer. We then introduce B phase at one end of the sample and observe its growth into the supercooled A phase via the magnetometer signal. For temperatures above a certain value, the phase interface travels up the tube with a nearly time-independent velocity, whose temperature dependence is in reasonable agreement with theory. We also investigate the dependence of this velocity on tube diameter and magnetic field. Our measured values of the difference between A phase and B phase magnetization agree with previous dynamic (NMR) measurements. We also derive thermodynamic data on the AB transition from the measurements of magnetization difference and the dependence of the transition temperature on magnetic field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00141566
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  • 10
    Electronic Resource
    Electronic Resource
    High-temperature cooling power of the superfluid stirling refrigerator (1995)
    Springer
    Journal of low temperature physics 98 (1995), S. 141-157 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Above 1 Kelvin, the measured cooling power of the superfluid Stirling refrigerator is significantly greater than would be expected simply from a classical ideal gas of3He quasiparticles. Analysis shows that this increased cooling power is due to the presence of the4He excitations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753610
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