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An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles

Yıl 2011, Cilt: 14 Sayı: 3, 147 - 151, 25.07.2011

Öz

One of the most common difficulties students face in learning Thermodynamics lies in grasping the physical meaning of concepts such as lost availability and entropy generation. This explains the quest for new approaches for explaining and comprehending these quantities, as suggested by diagrams from different authors. The difficulties worsen in the case of irreversibilities associated with heat transfer processes driven by a finite temperature difference, where no work transfer takes place. An equivalent mechanical model is proposed in this paper. Heat exchangers are modelled by means of Carnot heat engines and mechanical transmissions; the use of mechanical models allows an easy visualization of thermal irreversibilities. The proposed model is further applied to a power cycle, thus obtaining an “equivalent arrangement” where irreversibilities become clearly apparent.

Kaynakça

  • Bejan, A., 1997, Advanced Engineering Thermodynamics, Wiley Interscience, New York.
  • Branco J.F., Pinho, C.T., Figueiredo R.A., 2002, “First and Second-Law efficiencies in a new Thermodynamical diagram”, J. of Non-Equilibrium Thermodynamics,Vol. 27, [http://www.degruyter.de/journals/jnet/detailEn.cfm].
  • Bejan, A., Tsatsaronis, G., Moran, M., 1996, Thermal Design & Optimization, Wiley Interscience, New York.
  • Bejan, A., 1996, Entropy Generation Minimization, CRC Press, Boca Raton.
  • Witte, L. C., Shamsundar, N., 1983, “A thermodynamic efficiency concept for heat exchange devices”, J. Eng. Power,Vol. 105, pp. 199-203.
  • Caputa, C., 1967, “Una cifra de merito dei cicli termodinamici diretti”, Il Calore, Vol. 7, pp. 291-300.
Yıl 2011, Cilt: 14 Sayı: 3, 147 - 151, 25.07.2011

Öz

Kaynakça

  • Bejan, A., 1997, Advanced Engineering Thermodynamics, Wiley Interscience, New York.
  • Branco J.F., Pinho, C.T., Figueiredo R.A., 2002, “First and Second-Law efficiencies in a new Thermodynamical diagram”, J. of Non-Equilibrium Thermodynamics,Vol. 27, [http://www.degruyter.de/journals/jnet/detailEn.cfm].
  • Bejan, A., Tsatsaronis, G., Moran, M., 1996, Thermal Design & Optimization, Wiley Interscience, New York.
  • Bejan, A., 1996, Entropy Generation Minimization, CRC Press, Boca Raton.
  • Witte, L. C., Shamsundar, N., 1983, “A thermodynamic efficiency concept for heat exchange devices”, J. Eng. Power,Vol. 105, pp. 199-203.
  • Caputa, C., 1967, “Una cifra de merito dei cicli termodinamici diretti”, Il Calore, Vol. 7, pp. 291-300.
Toplam 6 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Bölüm Regular Original Research Article
Yazarlar

Jose Linares

Beatriz Moratilla Bu kişi benim

Federico Ramírez Bu kişi benim

Yayımlanma Tarihi 25 Temmuz 2011
Yayımlandığı Sayı Yıl 2011 Cilt: 14 Sayı: 3

Kaynak Göster

APA Linares, J., Moratilla, B., & Ramírez, F. (2011). An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles. International Journal of Thermodynamics, 14(3), 147-151.
AMA Linares J, Moratilla B, Ramírez F. An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles. International Journal of Thermodynamics. Temmuz 2011;14(3):147-151.
Chicago Linares, Jose, Beatriz Moratilla, ve Federico Ramírez. “An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles”. International Journal of Thermodynamics 14, sy. 3 (Temmuz 2011): 147-51.
EndNote Linares J, Moratilla B, Ramírez F (01 Temmuz 2011) An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles. International Journal of Thermodynamics 14 3 147–151.
IEEE J. Linares, B. Moratilla, ve F. Ramírez, “An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles”, International Journal of Thermodynamics, c. 14, sy. 3, ss. 147–151, 2011.
ISNAD Linares, Jose vd. “An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles”. International Journal of Thermodynamics 14/3 (Temmuz 2011), 147-151.
JAMA Linares J, Moratilla B, Ramírez F. An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles. International Journal of Thermodynamics. 2011;14:147–151.
MLA Linares, Jose vd. “An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles”. International Journal of Thermodynamics, c. 14, sy. 3, 2011, ss. 147-51.
Vancouver Linares J, Moratilla B, Ramírez F. An Equivalent Mechanical Model for Representing the Entropy Generation in Heat Exchangers. Application to Power Cycles. International Journal of Thermodynamics. 2011;14(3):147-51.