(19)

(11)

EP 3 743 665 A1

(12)

(43) Date of publication: 02.12.2020 Bulletin 2020/49 (21) Application number: 19741312.3 (22) Date of filing: 22.01.2019

(51) International Patent Classification (IPC):  F28D 9/00(2006.01) F28F 21/00(2006.01) F24F 12/00(2006.01) F28F 27/00(2006.01) (86) International application number: PCT/US2019/014622 (87) International publication number: WO 2019/144150 (25.07.2019 Gazette 2019/30)

(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 Designated Validation States: KH MA MD TN (30) Priority: 22.01.2018 US 201862620386 P (71) Applicant: Energy Wall LLC Lancaster PA 17601 (US)	(72) Inventor: EPLEE, Dustin Lancaster, PA 17601 (US) (74) Representative: Finnegan Europe LLP  1 London Bridge London SE1 9BG London SE1 9BG (GB)