# US 8,739,560 B2 · Integrated cooling, heating, and power systems

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- Number: US 8,739,560 B2
- Document ID: US8739560B2
- Status: Granted
- Kind: B2
- Application number: 12/529,695
- Filed: 2008-03-06
- Published: 2010-05-06
- Granted: 2014-06-03
- Earliest claimed: 2007-03-07
- Assignees: University of New Orleans Research and Technology Foundation, Inc.
- Applicants: Ting Wang
- Inventors: Ting Wang
- Web page: https://patentgrep.com/patent/US8739560B2

## CPC

- F01K 23/10: with exhaust fluid of one cycle heating the fluid in another cycle (F01K17/025 takes precedence)
- F25B 15/02: without inert gas ({F25B15/004, F25B15/006, F25B15/008}, F25B15/12, F25B15/14, F25B15/16 take precedence)
- F25B 27/02: using waste heat, e.g. from internal-combustion engines
- Y02A 30/274: using waste energy, e.g. from internal combustion engine
- Y02B 30/625: combined with heat or power generation [CHP], e.g. trigeneration
- Y02E 20/14: Combined heat and power generation [CHP]
- F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D)
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

One exemplary embodiment of this invention provides a single-effect absorption chiller including an absorber operatively connected to a solution heat exchanger and a generator, and a condenser in fluid communication with the absorber, wherein the absorber is sized and configured to receive a feed of water from a source of water and to transfer heat to the feed of water and then to convey the feed of water to the condenser without further heat conditioning of the feed of water prior to its entry into the condenser, and wherein the condenser is sized and configured to receive the feed of water from the absorber and to transfer heat to the feed of water, thereby cooling the condenser without resorting to an external heat exchanger such as a conventional cooling tower.

## Claims

### Claim 1

A single-effect absorption chiller, comprising:
an absorber operatively connected to a solution heat exchanger and a generator, and
a condenser in fluid communication with the absorber,
wherein the absorber is sized and configured to receive a feed of water from a source of water, and to transfer heat to the feed of water and then to convey the feed of water to the condenser without further heat conditioning of the feed of water prior to its entry into the condenser, and wherein the condenser is sized and configured to receive the feed of water from the absorber and to transfer heat to the feed of water, thereby cooling the condenser and
further comprising a heat exchanger component of the generator, wherein the heat exchanger component of the generator is sized and configured to receive the feed of water from the condenser and to transfer heat to the feed of water from an external heat source.

### Claim 2

A single-effect absorption chiller, comprising:
an absorber operatively connected to a solution heat exchanger and a generator, and
a condenser operatively connected to a heat exchanger component of the generator,
wherein the condenser is sized and configured to receive a feed of water from a source of water and to transfer heat to the feed of water and then to convey the feed of water to the heat exchanger component of the generator, which heat exchanger component transfers heat to the feed of water from an external heat source.

### Claim 3 (depends on 2)

A system comprising: a combustion engine, a single-effect absorption chiller according to claim 2, an engine inlet chiller operatively connected to at least the combustion engine, and a conduit for conveying chilled water from the absorption chiller to the engine inlet chiller, the foregoing being sized and configured so that, during use, waste heat released from the combustion engine powers the generator of the single-effect absorption chiller, which single-effect absorption chiller produces chilled water, and the system being sized and configured to circulate at least a portion of the chilled water through the conduit to the engine inlet chiller to cool air entering the combustion engine.

### Claim 4 (depends on 2)

A system comprising: a combustion engine, an absorption chiller according to claim 2, an engine inlet chiller operatively connected to at least the combustion engine, and a conduit for conveying chilled water from the absorption chiller to the engine inlet chiller, the foregoing being sized and configured so that, during use, waste heat released from the combustion engine powers an internal generator of the absorption chiller, which absorption chiller produces chilled water, and the system being sized and configured to circulate at least a portion of the chilled water through the conduit to the engine inlet chiller to cool air entering the combustion engine.

### Claim 5

A method comprising:
a. providing a refrigerant vapor to an absorber of a single-effect absorption chiller in which at least
i. the refrigerant vapor contacts an incoming condensed absorbent stream from a solution heat exchanger,
ii. the refrigerant vapor is absorbed by the condensed absorbent stream to form a liquid diluted solution mixture, and
iii. a water stream from a source of water is provided to cool the absorber to make a high affinity between the refrigerant vapor and the condensed absorbent stream during the absorption process in (a)(ii) and to transfer heat to the feed of water;
b. providing the water stream from the absorber to a condenser so that the water stream absorbs at least a portion of released latent heat from the condenser, thereby forming a condenser-heated water stream and cooling the condenser; and
c. further heating the condenser-heated water stream by feeding it into a generator through a heat exchanger component wherein the condenser-heated water stream absorbs additional heat from energy from an external heat source.

### Claim 6 (depends on 5)

The method of claim 5 further comprising:
d. providing a second water stream into an evaporator in which a low-temperature, low-pressure refrigerant flashes into vapor and absorbs heat from the second water stream, thereby lowering the temperature of the second water stream and forming a chilled water stream.

### Claim 7 (depends on 6)

The method of claim 6 further comprising:
e. transferring at least a portion of the chilled water stream to an engine inlet chiller operatively connected to a combustion engine, and
f. circulating exterior air through the engine inlet chiller.

### Claim 8

A method comprising:
a. providing a refrigerant vapor to an absorber of either a single-effect or a multi-effective absorption chiller in which at least
i. the refrigerant vapor contacts an incoming condensed absorbent stream from a solution heat exchanger,
ii. the refrigerant vapor is absorbed by the condensed absorbent stream to form a liquid diluted solution mixture, and
iii. a water stream from a source of water is provided to cool the absorber to make a high affinity between the refrigerant vapor and the condensed absorbent stream during the absorption process in (a)(ii) and to transfer heat to the feed of water;
b. providing the water stream from the absorber to a condenser so that the water stream absorbs at least a portion of released latent heat from the condenser, thereby forming a condenser-heated water stream and cooling the condenser; and
c. further heating the condenser-heated water stream by feeding it into a generator through a heat exchanger component wherein the condenser-heated water stream absorbs additional heat from energy from an external heat source.