Title: Developing of constructal theory concept to the total site cogeneration heat and power retrofit

Authors: Mehrangiz Ghazi; Majid Amidpour; Madjid Abbaspour; Hooman Farzaneh

Addresses: Department of Energy Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran ' Faculty of Mechanical Engineering, Department of Energy System, K. N. Toosi University of Technology, Tehran 1999143344, Iran ' School of Mechanical Engineering, Sharif University of Technology, Tehran 1136511155, Iran ' Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran

Abstract: In this paper, a novel method of retrofit design in total site cogeneration systems based on constructal theory is presented. In this regard, the total site cogeneration system is decomposed into three constructs: turbines, turbine arrays, and steam generators. The objective function to be minimised is the total annual cost of existing total site. Using constructal theory simplifies the optimisation procedure of total site in addition to reaching better conceptual design especially in more sophisticated systems. A case study from literatures has been taken up to examine the applicability of the algorithm and excellent agreement has been observed.

Keywords: constructal theory; cogeneration systems; total site cogeneration; CHP retrofit; power; mass flow rate; combined heat and power; retrofit design; turbines; turbine arrays; steam generators.

DOI: 10.1504/IJEX.2015.069991

International Journal of Exergy, 2015 Vol.17 No.2, pp.171 - 191

Received: 30 Jan 2014
Accepted: 26 Apr 2014
Published online: 22 Jun 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article