The design of finned tube bundles involves numerous geometric parameters affecting the heat transfer coefficient and the pressure drops which should be accounted for in the boiler design in order to reduce entropy generation and ultimately capital costs. In this work, the geometric dimensions that maximize the boiler's exergetic efficiency (tube diameter, fin height, fin thickness, number of fins per meter, transversal and longitudinal pitch) are examined. The exergetic efficiency resulting from the finite temperature difference in the heat transfer and the pressure drops on the gas and the water/steam sides - a measure of the entropy generated - is determined as a function of the geometric parameters, with correlations from the literature applied in calculating the heat transfer coefficients and the pressure drops.

Minimizing Entropy Generation To Optimize the Heat Transfer Surface of a Heat Recovery Boiler in a Combined Cycle Power Plant

DESIDERI, UMBERTO;
1993-01-01

Abstract

The design of finned tube bundles involves numerous geometric parameters affecting the heat transfer coefficient and the pressure drops which should be accounted for in the boiler design in order to reduce entropy generation and ultimately capital costs. In this work, the geometric dimensions that maximize the boiler's exergetic efficiency (tube diameter, fin height, fin thickness, number of fins per meter, transversal and longitudinal pitch) are examined. The exergetic efficiency resulting from the finite temperature difference in the heat transfer and the pressure drops on the gas and the water/steam sides - a measure of the entropy generated - is determined as a function of the geometric parameters, with correlations from the literature applied in calculating the heat transfer coefficients and the pressure drops.
1993
0791806855
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/628272
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? ND
social impact