Microcogeneration system based on HTPEM fuel cell fueled with natural gas: Performance analysis

Zuliani, Nicola; Taccani, Rodolfo

doi:10.1016/j.apenergy.2011.12.089

Cited by 69 publications

(29 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The same effect of the stoichiometric ratio on the voltage loss is also found in Ref. [38]. In addition, other results are verified with Ref.…”

Section: Resultssupporting

confidence: 79%

“…For this study, a semi-empirical model which has been developed by Korsgaard et al [36,37] is used for the modeling. This model has been also preferred by several researchers such as [38][39][40][41][42], because it is very useful for system simulation; in particular, for feasibility studies to estimate the effects of different parameters on the fuel cell. Detailed information about this model can be found in [36,37]; thus, we only briefly explain this paper.…”

Section: Ht-pemfcmentioning

confidence: 99%

See 1 more Smart Citation

Modeling and parametric study of a methanol reformate gas-fueled HT-PEMFC system for portable power generation applications

Herdem

Farhad

Hamdullahpur

2015

Energy Conversion and Management

View full text Add to dashboard Cite

“…The same effect of the stoichiometric ratio on the voltage loss is also found in Ref. [38]. In addition, other results are verified with Ref.…”

Section: Resultssupporting

confidence: 79%

Section: Ht-pemfcmentioning

confidence: 99%

Modeling and parametric study of a methanol reformate gas-fueled HT-PEMFC system for portable power generation applications

Herdem

Farhad

Hamdullahpur

2015

Energy Conversion and Management

View full text Add to dashboard Cite

“…Usually the system's electrical efficiency decreases while its thermal efficiency increases with load [12]. Both electrical and thermal efficiencies are important for CHP system operations (based upon seasonal variations, grid connectivity etc.).…”

Section: Stack Vs System Efficiencymentioning

confidence: 99%

“…It also simplifies bipolar plate flow field design and reduces reactants pressure drop along the fuel cell. The main advantages of moving to higher temperature stacks include: simplified and cheaper fuel processor construction as HT-PEMFC stack can tolerate up to 5 vol.% of carbon monoxide (CO) with minor cell performance loss, simplification of the heat recovery system with no need for reactants humidification as phosphoric acid based membrane is used as electrolyte [12].…”

Section: Fuel Cell Chp Systemsmentioning

confidence: 99%

Current status of fuel cell based combined heat and power systems for residential sector

Ellamla

Staffell

Bujło

et al. 2015

Journal of Power Sources

238

View full text Add to dashboard Cite

“…In addition, limited studies have been performed by considering balance of plant (BOP) components and combined power and heat production (CHP) for PEMFC [8][9][10]. However, it is required to evaluate the system efficiency more accurately by considering the thermal power for preheating and humidification, and the compression work for BOP components.…”

Section: Extended Abstractmentioning

confidence: 99%

System Efficiency of Proton Exchange Membrane Fuel Cell for Emergency Power Supply System

Jeon¹,

Kim²,

Lee³

2017

World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

Extended AbstractProton exchange membrane fuel cells (PEMFCs) have been widely used in various applications due to its advantages of high power density, rapid start-up, and high efficiency [1]. Especially, the PEMFC can be applied in an emergency power supply system such as high-rise building and complex facilities. The emergency power supply is very important in the high-rise building and complex facilities because a normal source of power can be failed during urgent disaster situations.There have been a lot of advances in the development of low temperature PEMFC. Recently, to overcome the problem of water flooding, high temperature PEMFC has been highlighted [2][3][4]. However, very large amount of water vapor is required to humidify PEMFC at the elevated temperature because saturation water vapor pressure increases exponentially with temperature. Therefore, it is necessary to analyze the performance of the high temperature PEMFC under various humidity conditions in terms of system efficiency.There has been a lot of studies to investigate the effect of temperature and relative humidity on the performance of PEMFC [5][6][7]. In addition, limited studies have been performed by considering balance of plant (BOP) components and combined power and heat production (CHP) for PEMFC [8][9][10]. However, it is required to evaluate the system efficiency more accurately by considering the thermal power for preheating and humidification, and the compression work for BOP components. In this study, to overcome the limitations of the previous study, three-dimensional computational fluid dynamics simulation was conducted. A unit cell with serpentine flow field was simulated, and compression work was considered for the BOP component together with the heat for preheating and humidification. The operating conditions were optimized using response surface methodology by considering both fuel cell output and system efficiency, and the amount of each energy component was analyzed. In addition, the effects of operating parameters such as temperature, relative humidity, and stoichiometric ratio on fuel cell power, system efficiency, and each energy component were investigated.As a result, the optimal operating conditions were 90.6 °C and 100.0% for the temperature and relative humidity, respectively, and 0.27 for stoichiometric ratio. In addition, at the optimal condition, the power output was 1.28 W and the system efficiency was 15.8%. The optimal condition showed a comparatively high system efficiency with allowable power output. In addition, the power output increased with the operating temperature, but the system efficiency decreased significantly because of exponentially increasing saturation vapor pressure and thermal energy for preheating/humidification. The system efficiency can be more effectively improved by increasing relative humidity rather than increasing operating temperature, because the ionic conductivity of the membrane is greatly affected by the relative humidity.

show abstract

Microcogeneration system based on HTPEM fuel cell fueled with natural gas: Performance analysis

Cited by 69 publications

References 16 publications

Modeling and parametric study of a methanol reformate gas-fueled HT-PEMFC system for portable power generation applications

Modeling and parametric study of a methanol reformate gas-fueled HT-PEMFC system for portable power generation applications

Current status of fuel cell based combined heat and power systems for residential sector

System Efficiency of Proton Exchange Membrane Fuel Cell for Emergency Power Supply System

Contact Info

Product

Resources

About