Issue 15

N. Zuli

ani, Frattura ed

Integrità Struttu

rale, 15 (2011)

29-34; DOI: 10

.3221/IGF-ESIS.1

5.04

D H

esign a igh Tem

nd expe peratu

riment re PEM

al chara fuel c

cteriza ell stac

tion of k

a 350 W

Ni Un nzu

cola Zulia iversity of Tri liani@units.

ni este, Departm it

ent of Mechan

ical Engineer

ing , via A. V

alerio 10 34

127 Trieste

STRACT . H I) polymer midification formance. T ter managem ate to the d main desig d membran mixture si perature di nagement. T YWORDS . H fuel-ce density sources ntion becaus temperatur tacles hinde lerance to C elopment of ere are sever gle phase of w ween the fue onsiderably i ongst all typ mising. They bon monoxid TRODUCTIO

igh Temper and phosp is not requ his is what ent proble evelopment n features a es. Perform mulating a stribution a his could s igh Tempe ll power-sou , ergonomics . Amongst a e of their hig e (< 100 °C) r their wides O usually co PEM fuel c al advantages ater need to l cell stack an ncreased ther es of HT PE can be oper e (CO) cont N

ature Proto horic acid, ired and CO makes HT ms are avo and charac nd the perfo ance curves typical steam nalysis sugg implify stack rature PEM rce system and enviro ll types of f h power den and are co pread comm ntained in t ells that can in operating be consider d the coolan eby allowing M, the ones ated at temp ent up to 2%

n Exchange can be ope content up PEM very ided. Till n terization o rmance cur refer to the reformer est that cat design and Fuel Cells; can generate nmental com uel cells Pro sity (> 1 kW mmonly calle ercialization he reformate be operated at higher te ed; (ii) the co t; (iii) waste h fuel cells to based on pol erature betwe in fuel can b

Membrane rated at tem to 2% in attractive, a owadays, fr f high temp ves of a 25 stack oper output. The hode air cou system BO Experiment electrical p pliance (low ton Exchang /kg), simple d Low Tem . These inclu s fuels. To o above 100 °C mperatures: oling system eat can be r use lower qu ybenzimidazo en 120 °C a e tolerated, a

(HT PEM) perature be the fuel can s low qualit om experim erature stac cells HT PE ating with t stack volt ld be used P, thus incr al analysis; P ower with s or no em e Membran design and q perature PE de a compl vercome the (High Tem (i) water man is simplified ecovered as a ality reforme le (PBI) and nd 180 °C, re ffecting only

fuel cell ba tween 120 be tolerated y reformed ental point ks. The aim M stack bas wo type of age distribu as coolant easing syste BI; Hydrog ignificantly issions) than e (PEM) fue uick start. U M (LT PEM ex water an se problems perature PEM agement can due to the in practical ene d hydrogen. phosphoric actants hum marginally th

sed on pol °C and 180 , affecting hydrogen c of view, o of this wo ed on PBI a fuels: pure h tion analysi leading to a m performa en. improved: e other con l cells have sually, PEM ) fuel cells. d heat mana research has fuel cells, be simplifie creased temp rgy source; ( acid membra idification is e performan

ybenzimidaz °C. Reacta only margin an be used nly few stud rk is to pres nd phosph ydrogen an s and the st better ther nce.

ole nts ally and ies ent oric d a ack mal

A B (PB hu per wa rel the aci gas tem ma

K E

I N

A

fficiency, en ventional po drawn the m fuel cells wor Several techn gement and focused on HT PEM) [1 d because on erature grad iv) CO tolera nes are the m not required ce.

ergy wer ost k at ical the the , 2]. ly a ient nce ost and

atte low obs into dev Th sin bet is c Am pro car

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