Designing heat-exchanger networks for energy savings in chemical plants

Özgen, Canan
Baç, Nurcan
Gürkan, Türker
Tosun, İsmail
The pinch-design method is applied to the evaluation of heat-exchanger networks for an existing monomer plant. The problem resulting from partially condensed multicomponent vapor streams possessing variable CP () values is solved by applying a novel technique. The rigorous design obtained is further revised by the consideration of plant constraints.


Thermo-oxidative characterization and kinetics of tar sands
Kök, Mustafa Verşan (Elsevier BV, 2011-08-01)
In this research, non-isothermal kinetics and thermal analysis of Gercus tar sand sample is studied by DSC (differential scanning calorimeter) and TG/DTG (thermogravimetry). Experiments were performed using three different mesh size (20-35, 35-50 and >50) of sample. Differential scanning calorimeter (DSC) curves revealed three reaction regions in the temperature range of 20-600 degrees C. On the other hand, thermogravimetry (TG/DTG) curves of tar sand samples at different particle sizes demonstrated three s...
Aerothermodynamic Shape Optimization of Reentry Capsule
Kutkan, Halit; Eyi, Sinan (2018-06-25)
This paper presents a hybrid method based on proper orthogonal decomposition (POD) with a trained radial basis function (RBF) network, on direct simulation monte carlo (DSMC) solutions for aerothermodynamic front surface optimization of Stardust reentry. Gaussian and multiquadric RBFs are implemented for comparison, and multiquadric functions are chosen due to their insensitivity to diverse shape parameters. Cubic uniform B-spline curves are used innovatively for parameterization of t...
Dynamic modelling and simulation of a wind turbine
Altuğ, Ayşe Hazal; Yavrucuk, İlkay; Department of Aerospace Engineering (2015)
In this thesis, a dynamic model for a horizontal axis wind turbine is developed for an upwind configuration using the MATLAB/Simulink environment. Blade Element Momentum Theory is used to model the rotor. It is assumed that the rotor blades are rigid and wind speed is uniform. Aerodynamic and gravitational forces are calculated as distributed loads. Verification of the model is done by using the LMS Samtech, Samcef for Wind Turbines software. Aerodynamic properties of the blades, sectional loads and moments...
Investigation of Porosity and Permeability Impairment in Sandstones by X-ray Analysis and Simulation
Iscan, A. G.; Kök, Mustafa Verşan; Civan, F. (Informa UK Limited, 2009-01-01)
Both porosity and permeability constitute the major parameters in core analysis. In this study, the variation of these two parameters along a sandstone core sample was investigated during formation damage. A water-based drilling fluid was dynamically circulated through the core sample for three different time intervals of 15 min, 45 min, and 60 min at 100 psi circulation pressure. The core sample was analyzed using x-ray digital radiography by sectional image approach. The differences in the porous media du...
Design and Testing of a Linear Generator for Wave-Energy Applications
Hodgins, Neil; Keysan, Ozan; McDonald, Alasdair S.; Mueller, Markus A. (2012-05-01)
A linear-generator topology is proposed for wave-energy applications. The main significance of the generator topology is that the relative position of the magnets, copper, and steels has been chosen so that there are no magnetic attraction forces between a stator and a permanent-magnet (PM) translator. The lack of magnetic forces and the modular nature of the generator topology make the manufacture and assembly of the generator easier than a conventional iron-cored PM linear generator. Analytical modeling t...
Citation Formats
C. Özgen, N. Baç, T. Gürkan, and İ. Tosun, “Designing heat-exchanger networks for energy savings in chemical plants,” Energy, pp. 853–861, 1989, Accessed: 00, 2020. [Online]. Available: