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Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production

A thermally-coupled monolithic membrane reformer (TMMR) is a heat and membrane integrated reformer for portable hydrogen production. This study simulates the TMMR using Aspen Plus software to find the appropriate monolith design and operation parameters to achieve optimal energy efficiency and hydro...

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Main Authors:	Jiwanuruk, Tara, Putivisutisak, Sompong, Vas-Umnuay, Paravee, Bumroongsakulsawat, Palang, Cheng, C. K., Assabumrungrat, Suttichai
Format:	Article
Language:	English
Published:	Elsevier 2017
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/18745/1/Modeling%20of%20thermally-coupled%20monolithic-1.pdf http://umpir.ump.edu.my/id/eprint/18745/ https://doi.org/10.1016/j.ijhydene.2017.08.210
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spelling	my.ump.umpir.187452018-07-13T08:26:54Z http://umpir.ump.edu.my/id/eprint/18745/ Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production Jiwanuruk, Tara Putivisutisak, Sompong Vas-Umnuay, Paravee Bumroongsakulsawat, Palang Cheng, C. K. Assabumrungrat, Suttichai TP Chemical technology A thermally-coupled monolithic membrane reformer (TMMR) is a heat and membrane integrated reformer for portable hydrogen production. This study simulates the TMMR using Aspen Plus software to find the appropriate monolith design and operation parameters to achieve optimal energy efficiency and hydrogen production within a small volume reactor. Different types of fuels, i.e. methane, methanol and ethanol, and various operating conditions, including molar flow rate of fuel (0.01–0.05 mol/s for combustion and 0.1–0.5 mol/s for reforming) and reforming pressure (3–5 atm), were investigated via thermodynamic equilibrium analysis. When methanol and ethanol were used as feedstocks, a reverse water-gas-shift reaction occurred, resulting in a decrease of energy efficiency. While using methane as a feedstock with a specific molar flow rate of 0.03 mol/s for the combustion reaction, 0.30 mol/s for the reforming reaction, and a reforming pressure of 4 atm, significant improvement of efficiency was observed. At the same time, the performance of the TMMR design was simulated based on the surface area of different sizes and configurations of monolith, i.e. parallel and checked arrangements, by using a kinetic-based model approach. The highest efficiency achieved was from the checked arrangement of monolith with 200 cpsi of cell density, 150 mm of diameter and length, and exchange area of around 1.5 m2. This design requires a small space of only 2.65 L in volume to provide 129 kW of hydrogen energy production with 44.0% efficiency. In conclusion, the proposed design and conditions could be a benchmark for future research on efficient compact reformers for vehicular applications. Elsevier 2017-09 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/18745/1/Modeling%20of%20thermally-coupled%20monolithic-1.pdf Jiwanuruk, Tara and Putivisutisak, Sompong and Vas-Umnuay, Paravee and Bumroongsakulsawat, Palang and Cheng, C. K. and Assabumrungrat, Suttichai (2017) Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production. International Journal of Hydrogen Energy, 42 (42). pp. 26308-26319. ISSN 0360-3199 https://doi.org/10.1016/j.ijhydene.2017.08.210 doi: 10.1016/j.ijhydene.2017.08.210
institution	Universiti Malaysia Pahang
building	UMP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Pahang
content_source	UMP Institutional Repository
url_provider	http://umpir.ump.edu.my/
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Jiwanuruk, Tara Putivisutisak, Sompong Vas-Umnuay, Paravee Bumroongsakulsawat, Palang Cheng, C. K. Assabumrungrat, Suttichai Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
description	A thermally-coupled monolithic membrane reformer (TMMR) is a heat and membrane integrated reformer for portable hydrogen production. This study simulates the TMMR using Aspen Plus software to find the appropriate monolith design and operation parameters to achieve optimal energy efficiency and hydrogen production within a small volume reactor. Different types of fuels, i.e. methane, methanol and ethanol, and various operating conditions, including molar flow rate of fuel (0.01–0.05 mol/s for combustion and 0.1–0.5 mol/s for reforming) and reforming pressure (3–5 atm), were investigated via thermodynamic equilibrium analysis. When methanol and ethanol were used as feedstocks, a reverse water-gas-shift reaction occurred, resulting in a decrease of energy efficiency. While using methane as a feedstock with a specific molar flow rate of 0.03 mol/s for the combustion reaction, 0.30 mol/s for the reforming reaction, and a reforming pressure of 4 atm, significant improvement of efficiency was observed. At the same time, the performance of the TMMR design was simulated based on the surface area of different sizes and configurations of monolith, i.e. parallel and checked arrangements, by using a kinetic-based model approach. The highest efficiency achieved was from the checked arrangement of monolith with 200 cpsi of cell density, 150 mm of diameter and length, and exchange area of around 1.5 m2. This design requires a small space of only 2.65 L in volume to provide 129 kW of hydrogen energy production with 44.0% efficiency. In conclusion, the proposed design and conditions could be a benchmark for future research on efficient compact reformers for vehicular applications.
format	Article
author	Jiwanuruk, Tara Putivisutisak, Sompong Vas-Umnuay, Paravee Bumroongsakulsawat, Palang Cheng, C. K. Assabumrungrat, Suttichai
author_facet	Jiwanuruk, Tara Putivisutisak, Sompong Vas-Umnuay, Paravee Bumroongsakulsawat, Palang Cheng, C. K. Assabumrungrat, Suttichai
author_sort	Jiwanuruk, Tara
title	Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_short	Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_full	Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_fullStr	Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_full_unstemmed	Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_sort	modeling of thermally-coupled monolithic membrane reformer for vehicular hydrogen production
publisher	Elsevier
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/18745/1/Modeling%20of%20thermally-coupled%20monolithic-1.pdf http://umpir.ump.edu.my/id/eprint/18745/ https://doi.org/10.1016/j.ijhydene.2017.08.210
_version_	1643668523286790144
score	13.211869

Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production

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