Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Numerical Modeling and Qualitative Approach for Geometric Design of an Ultracompact Printed Circuit Heat Exchanger for Supercritical CO2
Submission Author:
Bruno Henrique de Camargo Moreno , SP
Co-Authors:
Bruno Henrique de Camargo Moreno, Jurandir Itizo Yanagihara, Leandro Salviano
Presenter: Bruno Henrique de Camargo Moreno
doi://10.26678/ABCM.COBEM2023.COB2023-0937
Abstract
The advancements in computational capabilities and in Computational Fluid Dynamics techniques have allowed the design of higher efficient heat exchangers for several applications. Moreover, there is an increasing demand on the part of industry to develop ecologically friendlier equipment, based on increments in performance. This work proposes the design of an ultra-compact heat exchanger, which will operate with a CO2/CH4 mixture near the supercritical point, considering a compressible, turbulent, and tridimensional flow. The goal is to develop an ultracompact heat exchanger to be installed in a compressor chain to improve the oil recovery process. In the current stage of project development, a qualitative analysis of the geometric shape of the heat exchanger waves is carried out, as a basis for future geometric modifications in the design of the final heat exchanger. Subsequently, the numerical model will be validated, and an optimization procedure will be developed considering a 3D-CFD modeling coupling methods for metamodeling and optimization. Existing CFD codes will be modified to include advanced models for calculating thermodynamic properties and turbulent flows to simulate the heat exchanger process and the fluid dynamics of the supercritical CO2. A sequential approach of Sensitivity Analysis methods using a screening method (Elementary Effects) followed by a quantitative method (Sobol Indices) to reduce the number of input parameters for optimization will be implemented, permitting large models to be optimized at lower computational costs. The main characteristics of dynamic flow and heat transfer will be investigated in detail, in order to develop and design an optimized ultracompact heat exchanger.
Keywords
Supercritical CO2, Heat transfer intensification techniques, Ultra-compact plate heat exchanger, Optimization, Numerical simulation
