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:
Online Access:http://umpir.ump.edu.my/id/eprint/18745/1/Modeling%20of%20thermally-coupled%20monolithic-1.pdf
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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
collection UMP
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.
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spelling UMPir187452018-07-13T08:26:54Z 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. (Published) https://doi.org/10.1016/j.ijhydene.2017.08.210 doi: 10.1016/j.ijhydene.2017.08.210
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
title 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_short Modeling of Thermally-Coupled Monolithic Membrane Reformer for Vehicular Hydrogen Production
title_sort modeling of thermally coupled monolithic membrane reformer for vehicular hydrogen production
topic TP Chemical technology
url http://umpir.ump.edu.my/id/eprint/18745/1/Modeling%20of%20thermally-coupled%20monolithic-1.pdf
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