(19)

(11)

EP 2 066 984 A2

(12)

(88) Date of publication A3: 26.06.2008 (43) Date of publication: 10.06.2009 Bulletin 2009/24 (21) Application number: 07826572.5 (22) Date of filing: 27.09.2007

(51) International Patent Classification (IPC):  F24F 3/14(2006.01) (86) International application number: PCT/IB2007/053938 (87) International publication number: WO 2008/038250 (03.04.2008 Gazette 2008/14)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 27.09.2006 PT 10357206 (71) Applicant: Universidade Do Porto 4050 345 Porto (PT)	(72) Inventor: MAGALHÃES PIRES, Paulo Jorge 4450-734 Leça Da Palmeira (PT) (74) Representative: Ferreira, Maria Silvina  CLARKE MODET & Co., Rua Castilho, 50-5 1269/163 Lisboa 1269/163 Lisboa (PT)