(19)

(11)

EP 4 448 311 A1

(12)

(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22908790.3 (22) Date of filing: 19.12.2022

(51) International Patent Classification (IPC):  B60H 1/32(2006.01) F28D 5/02(2006.01) F28F 25/08(2006.01) F28F 25/00(2006.01) F28C 1/00(2006.01) F28D 5/00(2006.01) F25B 41/00(2021.01) F28F 25/02(2006.01) F28C 1/14(2006.01) F28C 1/02(2006.01) (52) Cooperative Patent Classification (CPC): F04F 5/10; F28B 1/06; F28B 9/04 (86) International application number: PCT/US2022/081946 (87) International publication number: WO 2023/115061 (22.06.2023 Gazette 2023/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 17.12.2021 US 202163291101 P (71) Applicant: Evapco, INC. Taneytown, MD 21787 (US)	(72) Inventors: STRUDER, Gordon Taneytown, Maryland 21787 (US) GOPALAN, Shridhar Taneytown, Maryland 21787 (US) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham B16 8QQ Birmingham B16 8QQ (GB)