Energy Saving in Processes Using Simple Thermodynamic Models of Utilities PUBLIC ACCESS

[+] Author Affiliations
Petr Stehlík, Aleš Fiaia, Zdeněk Hajný

Technical University of Brno, Brno, Czech Republic

Paper No. 97-AA-088, pp. V001T13A064; 8 pages
  • ASME 1997 Turbo Asia Conference
  • ASME 1997 Turbo Asia Conference
  • Singapore, September 30–October 2, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7867-5
  • Copyright © 1997 by ASME


Maximizing heat recovery in the heat exchanger network has to be considered as one of basic steps in a process design. Heating and cooling duties not serviced by heat recovery must be provided by external utilities. Simple thermodynamic models of various types of utilities (furnaces, steam boilers, steam turbines, gas turbines) are described in this paper. These models provide us with a tool for the analysis of utilities selection (provided the process heat and power demand are given), enable us to evaluate fuel burnt, power generated, costs for fuel and for exported/imported power and emissions (CO2, SO2) flowrates on a “local” or a “global” basis. This approach is convenient at the targeting stage of a design and can contribute to a substantial energy saving and flue gas emissions reduction.

Copyright © 1997 by ASME
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