Performance and Efficiency Analysis of an HT-PEMFC System with an Absorption Chiller for Tri-Generation Applications

An absorption chiller model for tri-generation (combined cooling, heating, and power) is developed and incorporated with the high temperature- (HT-) proton exchange membrane fuel cell (PEMFC) system model that was developed in our previous study. We employ a commercially available flow simulator, Aspen HYSYS, for solving the energy and mass balances of various system components, including an HT-PEMFC stack that is based on a phosphoric acid-doped PBI membrane, natural gas-fueled reformer, LiBr-H2O absorption chiller, balance of plant (BOP) components, and heat exchangers. Since the system’s operating strategy for tri-generation must be changed, depending on cooling or heating loads, a major focus of this study is to analyze system performance and efficiency under different requirements of electricity generation, cooling, and heating conditions. The system simulation results revealed that high-current fuel-cell operation is essential in raising the cooling capacity, but the overall system efficiency is slightly reduced as a result. Using a lower fuel-air ratio for the burner in the reforming module is one alternative that can minimize the reduction in the overall system efficiency under high-current fuel-cell operation and large cooling-capacity modes.

[1]  Carlos A. Grande,et al.  Steam methane reforming in a Ni/Al2O3 catalyst: Kinetics and diffusional limitations in extrudates , 2009 .

[2]  Ibrahim Dincer,et al.  Energy and exergy analyses of an ethanol-fueled solid oxide fuel cell for a trigeneration system , 2015 .

[3]  H. Ju,et al.  Temperature dependence of CO poisoning in high-temperature proton exchange membrane fuel cells with phosphoric acid-doped polybenzimidazole membranes , 2015 .

[4]  Pere Margalef,et al.  Integration of a molten carbonate fuel cell with a direct exhaust absorption chiller , 2010 .

[5]  H. Ju,et al.  Numerical study of thermal stresses in high-temperature proton exchange membrane fuel cell (HT-PEMFC) , 2014 .

[6]  Juan M. Belman-Flores,et al.  NLP model of a LiBr–H2O absorption refrigeration system for the minimization of the annual operating cost , 2012 .

[7]  Pablo Sanchis,et al.  Modelling of PEM fuel cell performance: steady-state and dynamic experimental validation , 2014 .

[8]  Fu-Cheng Wang,et al.  Impacts of Load Profiles on the Optimization of Power Management of a Green Building Employing Fuel Cells , 2018, Energies.

[9]  Takuto Araki,et al.  Cycle analysis using exhaust heat of SOFC and turbine combined cycle by absorption chiller , 2009 .

[10]  A. Reis,et al.  Experimental evaluation of CO poisoning on the performance of a high temperature proton exchange membrane fuel cell , 2009 .

[11]  Kui Jiao,et al.  A Three‐Dimensional Non‐isothermal Model of High Temperature Proton Exchange Membrane Fuel Cells with Phosphoric Acid Doped Polybenzimidazole Membranes , 2010 .

[12]  G. Gong,et al.  Performance analysis of 5 kW PEMFC-based residential micro-CCHP with absorption chiller , 2015 .

[13]  Ricardo Martinez-Botas,et al.  Solid oxide fuel cell/gas turbine trigeneration system for marine applications , 2011 .

[14]  Jitian Han,et al.  Investigation on performance of an integrated solid oxide fuel cell and absorption chiller tri-gener , 2011 .

[15]  Hongxi Yin,et al.  Model based experimental performance analysis of a microscale LiBr―H2O steam-driven double-effect absorption Chiller , 2010 .

[16]  Jeffrey M. Gordon,et al.  A general thermodynamic model for absorption chillers: Theory and experiment , 1995 .

[17]  Viktor Hacker,et al.  Energy and exergy analyses of a stand-alone HT-PEMFC based trigeneration system for residential applications , 2018 .

[18]  G. Froment,et al.  Methane steam reforming, methanation and water‐gas shift: I. Intrinsic kinetics , 1989 .

[19]  Andrea Casalegno,et al.  A trigeneration system based on polymer electrolyte fuel cell and desiccant wheel - Part B: Overall system design and energy performance analysis , 2015 .

[20]  Daniel Favrat,et al.  Multi-criteria optimization of a district cogeneration plant integrating a solid oxide fuel cell–gas turbine combined cycle, heat pumps and chillers , 2003 .

[21]  Fabio Rinaldi,et al.  A tri-generation system based on polymer electrolyte fuel cell and desiccant wheel – Part A: Fuel cell system modelling and partial load analysis , 2015 .

[22]  Savvas A. Tassou,et al.  Performance evaluation of a tri-generation system with simulation and experiment , 2009 .

[23]  A. Arsalis.  Modeling and simulation of a 100 kWe HT-PEMFC subsystem integrated with an absorption chiller subsystem , 2012 .

[24]  Raffaello Cozzolino,et al.  Thermodynamic Performance Assessment of a Novel Micro-CCHP System Based on a Low Temperature PEMFC Power Unit and a Half-Effect Li/Br Absorption Chiller , 2018 .

[25]  Luis A. Bujedo,et al.  Development and experimental validation of a simulation model to reproduce the performance of a 17.6 kW LiBr–water absorption chiller , 2016 .

[26]  Bernard Davat,et al.  An Equivalent Electrical Circuit Model of Proton Exchange Membrane Fuel Cells Based on Mathematical Modelling , 2012 .

[27]  H. Ju,et al.  Numerical degradation studies of high-temperature proton exchange membrane fuel cells with phosphoric acid-doped PBI membranes , 2016 .

[28]  Whangi Kim,et al.  Numerical analysis of effects of gas crossover through membrane pinholes in high-temperature proton exchange membrane fuel cells , 2014 .

[29]  E. Cho,et al.  A CO poisoning model for high-temperature proton exchange membrane fuel cells comprising phosphoric acid-doped polybenzimidazole membranes , 2014 .

[30]  Ruzhu Wang,et al.  COMBINED COOLING, HEATING AND POWER: A REVIEW , 2006 .

[31]  Tsung Leo Jiang,et al.  Modeling and simulation of hydrogen generation from high-temperature and low-temperature water gas shift reactions , 2008 .

[32]  Li Qingfeng,et al.  Phosphoric acid doped polybenzimidazole membranes: Physiochemical characterization and fuel cell applications , 2001 .

[33]  Minjin Kim,et al.  Modeling and analysis of a 5 kWe HT-PEMFC system for residential heat and power generation , 2017 .

[34]  Søren Knudsen Kær,et al.  Experimental Characterization of the Poisoning Effects of Methanol-Based Reformate Impurities on a PBI-Based High Temperature PEM Fuel Cell , 2012 .

[35]  Ruzhu Wang,et al.  Experimental verification of the variable effect absorption refrigeration cycle , 2014 .

[36]  I. Dincer,et al.  Energy analysis of a trigeneration plant based on solid oxide fuel cell and organic Rankine cycle , 2010 .

[37]  Isabel Malico,et al.  Design of a trigeneration system using a high‐temperature fuel cell , 2009 .

[38]  R. Hughes,et al.  The kinetics of methane steam reforming over a Ni/α-Al2O catalyst , 2001 .

[39]  Shijie Zhang,et al.  Modeling the dynamic simulation and control of a single effect LiBr–H2O absorption chiller , 2016 .

[40]  José Carlos Charamba Dutra,et al.  Dynamic study of a single effect absorption chiller using the pair LiBr/H2O , 2016 .