In the framework of the micro-CHP (Combined Heat and Power) energy systems
and the Distributed Generation (GD) concept, an Integrated Energy System (IES)
able to meet the energy and thermal requirements of specific users, using different
types of fuel to feed several micro-CHP energy sources, with the integration of
electric generators of renewable energy sources (RES), electrical and thermal
storage systems and the control system was conceived and built. A 5 kWel Polymer
Electrolyte Membrane Fuel Cell (PEMFC) has been studied. Using experimental
data obtained from various measurement campaign, the electrical and CHP PEMFC
system performance have been determinate.
The analysis of the effect of the water management of the anodic exhaust at
variable FC loads has been carried out, and the purge process programming logic
was optimized, leading also to the determination of the optimal flooding times by
varying the AC FC power delivered by the cell.
Furthermore, the degradation mechanisms of the PEMFC system, in
particular due to the flooding of the anodic side, have been assessed using an
algorithm that considers the FC like a black box, and it is able to determine the
amount of not-reacted H2 and, therefore, the causes which produce that.
Using experimental data that cover a two-year time span, the ageing suffered
by the FC system has been tested and analyzed.
| Identifer | oai:union.ndltd.org:unibo.it/oai:amsdottorato.cib.unibo.it:5814 |
| Date | 25 June 2013 |
| Creators | Vecci, Roberta <1978> |
| Contributors | Michele, Bianchi |
| Publisher | Alma Mater Studiorum - Università di Bologna |
| Source Sets | Università di Bologna |
| Language | English |
| Detected Language | English |
| Type | Doctoral Thesis, PeerReviewed |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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