Experimental investigation of a reticulated porous alumina heat exchanger for high temperature gas heat recovery

A. Banerjee; R. Bala Chandran; Jane H Davidson

doi:10.1016/j.applthermaleng.2014.10.033

Experimental investigation of a reticulated porous alumina heat exchanger for high temperature gas heat recovery

A. Banerjee, R. Bala Chandran, Jane H Davidson

Mechanical Engineering

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57 Scopus citations

Abstract

The present study presents an experimental study of a prototype counter-flow heat exchanger designed to recover sensible heat from inert and reactive gases flowing through a high temperature solar reactor for splitting CO₂. The tube-in-tube heat exchanger is comprised of two concentric alumina tubes, each filled with reticulated porous alumina with a nominal porosity of 80% and pore density of 5 pores per inch (ppi). The RPC provides high heat transfer surface area per unit volume (917 m^-1) with low pressure drop. Measurements include the permeability, inertial coefficient, overall heat transfer coefficient, effectiveness and pressure drop. For laminar flow and an inlet gas temperature of 1240 K, the overall heat transfer coefficients are 36-41 W m^-2 K^-1. The measured performance is in good agreement with a prior CFD model of the heat exchanger.

Original language	English (US)
Pages (from-to)	889-895
Number of pages	7
Journal	Applied Thermal Engineering
Volume	75
DOIs	https://doi.org/10.1016/j.applthermaleng.2014.10.033
State	Published - Jan 22 2015

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© 2014 Elsevier Ltd. All rights reserved.

Keywords

Alumina
Heat exchanger
High temperature
Reticulated porous ceramic

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title = "Experimental investigation of a reticulated porous alumina heat exchanger for high temperature gas heat recovery",

abstract = "The present study presents an experimental study of a prototype counter-flow heat exchanger designed to recover sensible heat from inert and reactive gases flowing through a high temperature solar reactor for splitting CO2. The tube-in-tube heat exchanger is comprised of two concentric alumina tubes, each filled with reticulated porous alumina with a nominal porosity of 80% and pore density of 5 pores per inch (ppi). The RPC provides high heat transfer surface area per unit volume (917 m-1) with low pressure drop. Measurements include the permeability, inertial coefficient, overall heat transfer coefficient, effectiveness and pressure drop. For laminar flow and an inlet gas temperature of 1240 K, the overall heat transfer coefficients are 36-41 W m-2 K-1. The measured performance is in good agreement with a prior CFD model of the heat exchanger.",

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AU - Davidson, Jane H

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AB - The present study presents an experimental study of a prototype counter-flow heat exchanger designed to recover sensible heat from inert and reactive gases flowing through a high temperature solar reactor for splitting CO2. The tube-in-tube heat exchanger is comprised of two concentric alumina tubes, each filled with reticulated porous alumina with a nominal porosity of 80% and pore density of 5 pores per inch (ppi). The RPC provides high heat transfer surface area per unit volume (917 m-1) with low pressure drop. Measurements include the permeability, inertial coefficient, overall heat transfer coefficient, effectiveness and pressure drop. For laminar flow and an inlet gas temperature of 1240 K, the overall heat transfer coefficients are 36-41 W m-2 K-1. The measured performance is in good agreement with a prior CFD model of the heat exchanger.

KW - Alumina

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KW - High temperature

KW - Reticulated porous ceramic

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Experimental investigation of a reticulated porous alumina heat exchanger for high temperature gas heat recovery

Abstract

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Keywords

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