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(12)United States Patent Gurin

(54) HIGH EFFICIENCY ABSORPTION HEAT PUMP AND METHODS OF USE

(75) Inventor: Michael H Gurin, GlenvieW, IL (US)

(73) Assigneez Rexorce Thermionics, Inc" cuyahoga F1OH S

(10)Patent N0.: US 7,313,926 B2 (45) Date of Patent: Jan. 1, 2008

. (*) Notice:

. Subjecttoanydisclaimer,thetermofthis

Pawnt is extended Or adjusted under 35 U-S-C-154(1))by0days-

(21) Appl.N0.:11/306,911 (22) Filed: Jan.16,2006

(65)

Prior Publication Data Us 2007/0089449A1 Apr.26,2007

RelatedUS ApplicationData __ _ _

aS, (U)

4/2003 Korln 5/2004 Korin

7/2005 Bak 6/2002 Kori:

(60) PrOVlslOnalapphcanonNO-60/593,485’?ledonkm 18>2005-

(51) Int‘Cl‘ F253 13/00

(200601)

(52) US. Cl. .. 62/324.2

(58) FieldofClassi?cationSearch~-~62/324-2, _ _ _ 62/476

(56)

See aPPhCaUOn ?le for Complete Search hlstol'y- References Cited

US. PATENT DOCUMENTS 4,152,901 A 5/1979 Munters

4,439,994

4,467,621 A 8/1984 O’Brien

. .

.

A * 4/1984 Briley ........................ 62/101

5,098,194

5,647,221 A * 7/1997 Garris, Jr. .................... 62/116

A * 3/1992 Kuo et a1. ................. 366/144

Desurher

Absorber

5,873,260 A 5,899,067 A 5,946,931 A

6,374,630 B1 6,434,955 B1

2/1999 Linhardteta1. 5/1999 Hageman 9/1999 Lomaxeta1.

4/2002 Jones 8/2002 Ng eta1.

2D

US007313926B2

6,442,951 B1* 9/2002 Maeda eta1. .. 62/94

6,539,728 B2 6,739,142 B2

6,918,254 B2 2002/0078696 A1

2003/0061823 Al*

2003/0182946A1 10/2003 Samieta1.

2003/0221438 A1 12/2003 Rane

2005/0252235Al* 11/2005 Critopheta1...62/480

*Citedbyexaminer

Primary ExamineriMelvin Jones (57) ABSTRACT

A'highe?iciencyabsorptionheatpumpcycleisdisclosed usingahighpressurestage,asupercriticalcoolingstage,and a mechanical energy extraction stage to provide a non-toxic

combined heat, cooling, and energy system. Using the preferred carbon dioxide gas With partially miscible absorber ?uids, including the preferred ionic liquids as the Working ?uid in the system, the present invention desorbs the CO_Sub_2 from an absorbent and Cools the gas in the supercritical state to deliver heat. The cooled CO.sub.2 gas is then expanded, preferably through an expansion device transforming the expansion energy into mechanical energy

thereby providing coolmg, heating temperature lift and electrical energy, and is returned to an absorber for further cycling.Strategicuseofheatexchangers,preferablymicro channel heat exchangers comprised of nanoscale powders and thermal-hydraulic compressor/pump can further increase the efficiency and performance of the system.

23 Claims, 9 Drawing Sheets

25

4/2003 Alden .. 62/115

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