Fuel cell systems and traditional technologies. Part II: Experimental study on dynamic behavior of PEMFC in stationary power generation

Abstract

The present work is focused on electric generation for stationary applications. The dynamic behavior of a PEMFC-based system has been investigated at both constant and variable load conditions from an experimental point of view. An analysis of efficiency as a function of time has been proposed to summarize the dynamic performance; moreover, current intensity and voltage have been considered as main parameters of interest from the electric point of view. In addition, other energetic and thermodynamic parameters have been studied in this work.The experimental campaign has been carried out over four test typologies: constant load; increasing and decreasing load; random load. These tests have been planned to challenge the system with a variety of load-based cycles, in frame of a thorough simulation of real load conditions.

Spatial proton exchange membrane fuel cell performance under carbon monoxide poisoning at a low concentration using a segmented cell system

“…Voltages (a) and current densities of each segment normalized to its initial performance (b) vs. time for an overall current density of 0. 8 Measurements performed with H 2 þ 2 ppm CO/O 2 were carried out in the galvanostatic mode at a constant overall cell current of 0.8 A cm À2 . Fig.…”

“…Pt À O ads þ Pt À H ads 4Pt À OH ads (8) The chemical oxidation of CO should be dominant in our case, as the potential of the CO electrooxidation should be higher than 0.4 V for the Pt catalyst at 60 C [68,71,72], while the anode overpotentials for the samples investigated were 0.210 and 0.295 V under H 2 /air operating conditions (Fig. 12).…”

Two-phase flow and thermal transients in proton exchange membrane fuel cells – A critical review

“…In 2009, Venturelli et al [129] showed that an increase in load results in the temperature reaching steady state at a faster pace. Therefore, transient changes at higher load conditions reduce the time for the system to reach a steady state.…”

Energy analysis of fuel cell system for commercial greenhouse application – A feasibility study

“…The fuel cell technology is one of the most attractive solutions in this sense due to simultaneous production of heat and electricity at higher efficiencies and in more environmentally friendly way than most of the conventional commercial techniques [3][4][5][6]. During the past decades fuel cells have been investigated and demonstrated for several applications especially in the stationary energy cogeneration systems (CHP) [1,[7][8][9].…”

“…Among the various types of fuel cell, the proton exchange membrane fuel cell (PEMFC) technology has found widespread use of area especially in vehicular applications, distributed generation units and portable electronic equipment [3][4][5][6][7][8][9].…”