Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control

Master's thesis

Research output: ThesisMaster's thesisTheses

Abstract

A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production.

In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range.

Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar.

In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow.
The power density increases by pressurization and this leads system size and cost reductions.
Original languageEnglish
QualificationMaster Degree
Awarding Institution
  • Helsinki University of Technology
Supervisors/Advisors
  • Lampinen, Markku, Supervisor, External person
  • Ihonen, Jari, Advisor
Place of PublicationEspoo
Publication statusPublished - 2008
MoE publication typeG2 Master's thesis, polytechnic Master's thesis

Fingerprint

Pressurization
Proton exchange membrane fuel cells (PEMFC)
Moisture
Control systems
Fuel cells
Blowers
Water management
Cost reduction
Oxidants
Atmospheric pressure
Compressors
Atmospheric humidity
Electricity
Hot Temperature
Availability
Air
Water

Keywords

  • PEMFC
  • air and water management
  • pressurization

Cite this

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title = "Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control: Master's thesis",
abstract = "A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.",
keywords = "PEMFC, air and water management, pressurization",
author = "Jaana Viitakangas",
note = "CA2: tk503",
year = "2008",
language = "English",
school = "Helsinki University of Technology",

}

TY - THES

T1 - Theoretical and experimental study of a 10 kilowatt proton exchange membrane fuel cell's thermal and moisture system control

T2 - Master's thesis

AU - Viitakangas, Jaana

N1 - CA2: tk503

PY - 2008

Y1 - 2008

N2 - A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.

AB - A fuel cell is an electrochemical device that converts fuel and oxidant into electricity. Fuel cells are considered a promising future energy technology, due to their potential for efficient and environmental energy production. In this thesis a middle pressure, 10 kW scale electrical power proton exchange membrane (PEM) fuel cell system has been studied, concentrating on air and moisture management. The issue of whether a small pressurization could benefit the PEMFC system has been examined. Since the examination is targeted to a real system that could be built of serial production components, system component availability has also been mapped. It was noted that there are no commercial compressors for the PEMFC systems in this power range. Pressurization is known to have many advantages over non pressurized fuel cell systems, namely pressurization makes the system smaller and lighter and therefore cheaper. Pressurization also eases water management, since at higher pressures less water is needed to reach the same relative humidity levels. However, the high pressure systems are more complex and costly to build because of required special equipment. In this work, middle pressure denotes the pressures between atmospheric and 1.5 bar. In this study net power gain was not achieved, mainly because of blowers in this range have fairly low efficiencies and best efficiency area is typically narrow. The power density increases by pressurization and this leads system size and cost reductions.

KW - PEMFC

KW - air and water management

KW - pressurization

M3 - Master's thesis

CY - Espoo

ER -