Patent SG-11201909648V-A (SG)
Title: Desiccant enhanced evaporative cooling systems and methods
Inventor: LEPOUDRE PHILIP PAUL
IPC: F24F5/00
Filed: 2017-04-18
Abstract: LAHXor LLHX 4 Dryer Bypass 7 134 +122 116 140 130 112 118 v ' Inlet Air 124 168 Tank 126 166 142 To Regen 166 From Regen Water Supply 138 Tank 136 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 October 2018 (25.10.2018) WIP0 I PCT ill IIIIIl °mons °nolo VIII mo Homo oimIE (10) International Publication Number WO 2018/191806 Al (51) International Patent Classification: F24F 5/00 (2006.01) F25B 15/14 (2006.01) F24F 12/00 (2006.01) F25B 19/00 (2006.01) (21) International Application Number: PCT/CA2017/050479 (22) International Filing Date: 18 April 2017 (18.04.2017) (25) Filing Language: English (26) Publication Language: English (71) Applicant: NORTEK AIR SOLUTIONS CANADA, INC. [CA/CA]; 1502D Quebec Avenue, Saskatoon, Saskatchewan S7K 1V7 (CA). (72) Inventor: LEPOUDRE, Philip Paul; 153 Mount Allison Crescent, Saskatoon, Saskatchewan S7H 4A4 (CA). (74) Agent: SMART & BIGGAR; 900-55 Metcalfe Street, Ot- tawa, Ontario K11 3 6L5 (CA). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (54) Title: DESICCANT ENHANCED EVAPORATIVE COOLING SYSTEMS AND METHODS 102 110 I \ \ \ \ \ \ . . . . /i 1 Desiccant Dryer LAMEE 106 Plenum 104 DEC 108 124 100Th 4 System Controller 150 y-114 120 Supply Air 124 FIG. 1 (57) : Disclosed are systems and methods for conditioning air using a liquid-to-air membrane energy exchanger (LAMEE) as a pre-dryer, in combination with a direct evaporative cooler (DEC). The LAMEE and DEC can be arranged inside a process plenum configured to receive and condition air for delivery to an enclosed space. The LAMEE can circulate a liquid desiccant to remove moisture from the air, before passing the air through the DEC. As a result, the DEC can cool the air to lower temperatures and improve overall efficiency. In an example, a regeneration system can regenerate at least some of the liquid desiccant prior to recirculation through the LAMEE. In an example, the DEC can use removed water recovered in regeneration as make up water for the DEC. In an example, a liquid to air or liquid to liquid heat exchanger can cool the liquid desiccant, prior to recirculation through the LAMEE. [Continued on next page] WO 2018/191806 Al MIDEDIMOMMIDIIMMOIDEHHOHMOIRIERVOIS TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))