Transport in a Methanol Steam Reformer as the Fuel Processor for Fuel Cell Systems

2004 ◽  
Author(s):  
Hyung Gyu Park ◽  
Ming-Tsang Lee ◽  
Frank K. Hsu ◽  
Costas P. Grigoropoulos ◽  
Ralph Greif ◽  
...  
Keyword(s):  
Analytical Study ◽  
Processing System ◽  
Reacting Flow ◽  
Hydrogen Fuel Cells ◽  
Catalytic Reactor ◽  
Hydrogen Fuel ◽  
Fuel Processing ◽  
Fuel Processor ◽  
Optimized Conditions

An experimental and analytical study of the reacting flow in a catalytic reactor is presented. Methanol-steam reforming may be utilized in the fuel processing system for hydrogen fuel cells. Understanding the flow and transport phenomena as well as the reaction mechanisms is essential for improving the efficiency of the reforming process as well as the quality of the processed fuel. Utilizing the results obtained, optimized conditions for fuel processing are discussed.

scholarly journals Transport in a Microfluidic Catalytic Reactor

2003 ◽  
Author(s):  
Hyung Gyu Park ◽  
Jaewon Chung ◽  
Costas P. Grigoropoulos ◽  
Ralph Greif ◽  
Mark Havstad ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Processing System ◽  
Proton Exchange ◽  
Reacting Flow ◽  
Fuel Processing ◽  
Methanol Reforming ◽  
Numerical Studies ◽  
Exchange Membrane ◽  
Optimized Conditions

A study of the heat and mass transfer, flow, and thermodynamics of the reacting flow in a catalytic micro-reactor is presented. Methanol reforming is utilized in the fuel processing system driving a micro-scale proton exchange membrane fuel cell. Understanding the flow and thermal transport phenomena as well as the reaction mechanisms is essential for improving the efficiency of the reforming process as well as the quality of the processed fuel. Numerical studies have been carried out to characterize the transport in a silicon microfabricated reactor system. On the basis of these results, optimized conditions for fuel processing are determined.

Pemanfaatan Sistem Informasi Terhadap Kinerja Pelayanan, Sirkulasi Buku Dan Pengolahan Arsip

2018 ◽  
Vol 4 (1) ◽  
pp. 87-96
Author(s):  
Yanni Suherman
Keyword(s):  
Information System ◽  
Data Processing ◽  
System Development ◽  
Processing System ◽  
Data Processing System ◽  
Data Archiving ◽  
Data Archives ◽  
Development Life Cycle ◽  
Search Data

Research conducted at the Office of Archives and Library of Padang Pariaman Regency aims to find out the data processing system library and data archiving. All data processing is done is still very manual by using the document in writing and there is also a stacking of archives on the service. By utilizing library information systems and archives that will be applied to the Office of Archives and Library of Padang Pariaman Regency can improve the quality of service that has not been optimal. This research was made by using System Development Life Cycle (SDLC) which is better known as waterfall method. The first step taken on this method is to go directly to the field by conducting interviews and discussions. This information system will be able to assist the work of officers in terms of data processing libraries and facilitate in search data archives by presenting reports more accurate, effective and efficient.

scholarly journals Exergy analysis of a biomass-based multi-energy system

2019 ◽  
Vol 113 ◽  
pp. 02017
Author(s):  
Mariagiovanna Minutillo ◽  
Alessandra Perna ◽  
Alessandro Sorce
Keyword(s):  
Exergy Analysis ◽  
Energy System ◽  
H2 Production ◽  
Operating Conditions ◽  
Processing Unit ◽  
Storage Unit ◽  
Fuel Processing ◽  
Fuel Processor ◽  
Energy Processes ◽  
And Storage

This paper focuses on a biofuel-based Multi-Energy System generating electricity, heat and hydrogen. The proposed system, that is conceived as refit option for an existing anaerobic digester plant in which the biomass is converted to biogas, consists of: i) a fuel processing unit, ii) a power production unit based on the SOFC (Solid Oxide Fuel Cell) technology, iii) a hydrogen separation, compression and storage unit. The aim of this study is to define the operating conditions that allow optimizing the plant performances by applying the exergy analysis that is an appropriate technique to assess and rank the irreversibility sources in energy processes. Thus, the exergy analysis has been performed for both the overall plant and main plant components and the main contributors to the overall losses have been evaluated. Moreover, the first principle efficiency and the second principle efficiency have been estimated. Results have highlighted that the fuel processor (the Auto-Thermal Reforming reactor) is the main contributor to the global exergy destruction (9.74% of the input biogas exergy). In terms of overall system performance the plant has an exergetic efficiency of 53.1% (it is equal to 37.7% for the H2 production).

Portable power source based on air-hydrogen fuel cells with free-breathing cathodes

2011 ◽  
Vol 37 (5) ◽  
pp. 412-416
Author(s):  
S. A. Gurevich ◽  
E. I. Terukov ◽  
O. I. Kon’kov ◽  
A. A. Tomasov ◽  
N. K. Zelenina ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Free Breathing ◽  
Power Source ◽  
Hydrogen Fuel Cells ◽  
Hydrogen Fuel ◽  
Portable Power

Micromachined Methanol Steam Reforming System Integrated With Catalytic Combustor Using Carbon Nanotubes as Catalyst Supports

2006 ◽  
Author(s):  
Dae-Eun Park ◽  
Tae-Kyu Kim ◽  
Sejin Kwon ◽  
Choong-Ki Kim ◽  
Euisik Yoon
Keyword(s):  
Carbon Nanotubes ◽  
Processing System ◽  
Pt Catalyst ◽  
Catalyst Supports ◽  
Fuel Processing ◽  
Reforming Catalyst ◽  
Coating Method ◽  
Catalytic Hydrogen ◽  
Catalytic Combustor ◽  
First Time

In this paper we have successfully demonstrated a new micromachined fuel processing system including vaporizer, catalytic combustor and methanol steam reformer. This fuel processing system utilizes the thermal energy generated from the catalytic hydrogen combustion to heat up the entire system. For the first time, we have used carbon nanotubes as a supporting structure of Pt catalyst for combustion. The catalytic combustor could supply the energy to heat the reformer and maintain its working temperature. We have also developed a new coating method of reforming catalyst (Cu/ZnO/Al2O3) and observed that adequate amount of hydrogen can be generated for PEMFC. We have successfully reported the feasibility of the proposed fuel processing system in each assembled component.

scholarly journals Analysing the evolution of computer science events leveraging a scholarly knowledge graph: a scientometrics study of top-ranked events in the past decade

2021 ◽  
Author(s):  
Arthur Lackner ◽  
Said Fathalla ◽  
Mojtaba Nayyeri ◽  
Andreas Behrend ◽  
Rainer Manthey ◽  
...  
Keyword(s):  
Computer Science ◽  
Analytical Study ◽  
Subjective Evaluation ◽  
Knowledge Exchange ◽  
Scholarly Communication ◽  
Knowledge Graph ◽  
Crowd Sourcing ◽  
High Quality ◽  
Publish Or Perish

AbstractThe publish or perish culture of scholarly communication results in quality and relevance to be are subordinate to quantity. Scientific events such as conferences play an important role in scholarly communication and knowledge exchange. Researchers in many fields, such as computer science, often need to search for events to publish their research results, establish connections for collaborations with other researchers and stay up to date with recent works. Researchers need to have a meta-research understanding of the quality of scientific events to publish in high-quality venues. However, there are many diverse and complex criteria to be explored for the evaluation of events. Thus, finding events with quality-related criteria becomes a time-consuming task for researchers and often results in an experience-based subjective evaluation. OpenResearch.org is a crowd-sourcing platform that provides features to explore previous and upcoming events of computer science, based on a knowledge graph. In this paper, we devise an ontology representing scientific events metadata. Furthermore, we introduce an analytical study of the evolution of Computer Science events leveraging the OpenResearch.org knowledge graph. We identify common characteristics of these events, formalize them, and combine them as a group of metrics. These metrics can be used by potential authors to identify high-quality events. On top of the improved ontology, we analyzed the metadata of renowned conferences in various computer science communities, such as VLDB, ISWC, ESWC, WIMS, and SEMANTiCS, in order to inspect their potential as event metrics.

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