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TECHNICAL PAPERS

Characteristics of Thermogravimetric Plants

[+] Author and Article Information
S. Arosio

Dipartimento di Energetica, Politecnico di Milano, Milano, Italy

R. Carlevaro

CNR-TeMPE, Milano, Italye-mail: carlevar@tempe.mi.cnr.it

J. Energy Resour. Technol 124(4), 276-282 (Nov 20, 2002) (7 pages) doi:10.1115/1.1488670 History: Received November 14, 2001; Revised April 09, 2002; Online November 20, 2002
Copyright © 2002 by ASME
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References

Arosio S., and Parolini P., 1993, “Analysis of Experimental Data of a Non Conventional Thermodynamic System,” Proc., Second International Conference on Energy and Environment towards the Year 2000, Capri, Italy, 1 , pp. 429–439, de Costanzo Editori, Napoli.
El-Boher A., Lesin S., Unger Y., and Branover H., 1988, “Experimental Studies of Liquid Metal Two-phase Flows in Vertical Pipes,” Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, pp. 312–319.
Satyamurthy,  P., Dixit,  N. S., and Thiyagarajan, 1998, “Two-Fluid Model Studies for High Density Two-Phase Liquid Metal Vertical Flows,” Int. J. Multiphase Flow, 24, pp. 721–737.
Branover H., Barak A., Golbraikh E., Greenspan E., Lesin S., 1998, “High-Efficiency Energy Conversion Cycle for Lead Cooled Reactors,” 9th International Conference on Emerging Nuclear Energy Systems, ICENESS, Israel, pp. 617–625.
Arosio S., and Carlevaro R., 1996, “Thermodynamic Converter from Medium Enthalpy Sources Thermogravimetric Systems,” Proc., 3rd International Conference on Energy and Environment Toward the Year 2000, Capri, 1 , pp. 349–359.
Arosio S., and Carlevaro R., 1997, “The Thermogravimetric System: Studies and Developments,” Tecnica Italiana, Anno LXII-N. 1, Cormons (Gorizia), Italia, pp. 53–65.
Arosio S., and Carlevaro R., 2000, “A Non Conventional Heat Pump,” Proc., 2000 International Joint Power Generation Conference, Miami Beach, FL.
Calderazzi,  L., and Colonna di Paliano,  P., 1997, “Thermal Stability of R-134a, R-141b, R-13 I1, R-7146, R-125 Associated with Stainless Steel as a Containing Material,” Int. J. Refrig., 20, pp. 381–389.
Lombardi,  C., and Carsano,  C. G., 1992, “A Dimensionless Pressure Drop Correlation for Two-phase Mixtures Flowing Upward in Vertical Ducts Covering Wide Parameter Ranges,” Heat and Technology, 10, pp. 125–141.
Arosio S., and Carlevaro R., 1996, “Void Fraction and Pressure Drops of a Two-Phase Upward Flow in Large Diameter Ducts,” Proc., 5th International Multiphase Flow in Industrial Plants, Amalfi, Italy, ANIMP, 1 , pp. 34–42.

Figures

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Schematic diagram of the regenerated thermogravimetric system—BC: upward bicomponent column, C: condenser, E: evaporator, H: auxiliary heater, M: mixer, MC: downward monophase column, P: pump, R: regenerator, S: separator, T: hydraulic turbine
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Theoretical regenerated thermodynamic cycles—a) saturated cycle: solid line, b) superheated cycle: dotted line, c) hypercritical cycle: short dashes line
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Pressure drop trends along the percentage plant height Z %
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Slip ratio S and total local pressure P trends along the percentage plant height Z %
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Nonregenerative (η) and regenerative (ηr) cycle efficiency and work per unit mass LU versus the reduced pressure Pr, the extreme cycle temperatures being fixed
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Hydraulic efficiency ηhy versus R for several values of Tmin, once fixed Pr,Tmax, the bicomponent column diameter DBC and the liquid superficial velocity VLS
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Overall efficiency ηo versus R for several values of Tmin, once fixed Pr,Tmax,DBC, and VLS
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Plant height Z and power W versus R, once Pr,Tmin,Tmax,DBC, and VLS are fixed
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Plant height Z and power W versus R for several values of VLS, once Pr,Tmin,Tmax, and DBC are fixed
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Hydraulic efficiency ηhy and overall efficiency ηo versus R for several values of Tmin, once fixed vaporization temperature Tvap,Tmax,DBC, and VLS
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Plant height Z and power W versus R for several values of Tmin, once fixed Tvap,Tmax,DBC and VLS

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