(19)

(11)

EP 3 074 706 A2

(12)

(88) Date of publication A3: 17.09.2015 (43) Date of publication: 05.10.2016 Bulletin 2016/40 (21) Application number: 14806371.2 (22) Date of filing: 28.11.2014

(51) International Patent Classification (IPC):  F25D 29/00(2006.01) F28F 27/00(2006.01) F25B 49/00(2006.01) F28G 15/00(2006.01) (86) International application number: PCT/GB2014/053524 (87) International publication number: WO 2015/079242 (04.06.2015 Gazette 2015/22)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 28.11.2013 GB 201320977 (71) Applicant: Elstat Limited Preston, Lanchashire PR2 5AP (GB)	(72) Inventors: LAMBERT, Philip Preston Lancashire PR3 3BN (GB) HULL, Colin Fleetwood Lancashire FY7 7BJ (GB) (74) Representative: Boxall, Sarah Jane  Boxall IPM Ltd 9 King Street Sandwich Kent CT13 9BT Sandwich Kent CT13 9BT (GB)