Loading...

Design of Heat Exchanger in Thermoacoustic Systems

Hasibi, Iman | 2010

1452 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41030 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Ghorbanian, Kaveh
  7. Abstract:
  8. In this research, the principles of design of Heat Exchangers in thermoacoustic systems are developed. The Heat Exchangers as a essential part of thermoacoustic systems, complete the thermodynamic cycle in these systems. In this thesis, principles and algorithms of design for Shell&Tube, Plate and Screen Heat Exchangers are described and these principles are validated for each kind of Heat Exchangers. Then the balance of exergy is studied in thermoacoustic systems and at the end, for every Heat Exchangers amount of exergy destruction is evaluated for oscillating and non-oscillating fluids. Based on fitness functions of exergy destruction, heat transfer area and acoustic pressure drop, Heat Exchangers are optimized and efficiency of optimized Heat Exchangers in thermoacoustic systems are investigated. For this purpose, single-objective and multi-objective genetic algorithms are applied. Finally each type of Heat Exchangers are designed under operating conditions and performance of optimized Heat Exchangers are studied. The Heat Exchanger optimized by minimizing exergy destruction, heat transfer area and acoustic pressure drop, is presented and effects of each geometrical parameter on change of objective functions is investigated. The results demonstrate that optimization based on exergy destruction and heat transfer area improves the efficiency of thermoacoustic system, but optimization based on acoustic pressure drop does not improve it
  9. Keywords:
  10. Heat Exchangers ; Exergy ; Optimization ; Thermoelastic

 Digital Object List

 Bookmark