Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)   SUMMER 2012 , Volume 31 , Number 2 (65); Page(s) 41 To 54.
 
Paper: 

DESIGN AND OPTIMIZATION OF MULTI-STREAM PLATE-FIN HEAT EXCHANGERS USING OPTIMUM FINS AND VARIABLE PHYSICAL PROPERTIES

 
 
Author(s):  TAHOUNI NASSIM*, MIRYAHYAIE SAMIRA, JODA FATEMEH, FALLAHI HAMID REZA, PANJESHAHI MOHAMMAD HASAN
 
* SCHOOL OF CHEMICAL ENGINEERING, COLLEGE OF ENGINEERING, UNIVERSITY OF TEHRAN, TEHRAN, I.R. IRAN
 
Abstract: 

Although several methods have been proposed in design of multi-stream heat exchangers, but they often apply for constant physical properties. In this research, a new method is presented using the variation of physical properties with temperature as well as optimum pressure drops. Having indicated the dependency of specific heat capacity, viscosity, density and thermal conductivity on temperature variation, a set of temperature correction factors is defined for each stream. Calculating the correction factors for all streams will lead in finding an optimum DTmin in targeting stage as well as a reliable design based on effective pressure drops, which will guarantee the accuracy of results. Moreover, the optimum pressure drops are used by the optimum selection of fins for each stream in which the total annual cost of exchanger is minimized using genetic algorithm. Having applied the temperature correction factors in design of a multi-stream heat exchanger as case study, the results showed a 27.3% and 13.5% reduction in exchanger volume and total annual cost, respectively, compared to those calculated based on constant physical properties. Also, by optimization of fin types using the genetic algorithm, the results showed a 4.28% and 4.92% reduction in volume and total annual cost, respectively.

 
Keyword(s): MULTI-STREAM HEAT EXCHANGER, PINCH TECHNOLOGY, VARIABLE PHYSICAL PROPERTY, OPTIMIZATION, GENETIC ALGORITHM, FIN TYPE
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 70
 
Latest on Blog
Enter SID Blog