Adsorptive hybrid desiccant cooling system

Patent metadata

Field	Value
Publication number	US-10704792-B2
Application number	US-201715841932-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Apr 12, 2017
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

Provided is an adsorptive hybrid desiccant cooling system, including a desiccant cooler comprising a housing including a regeneration passage and a dehumidification passage, a desiccant rotor mounted on a partition wall dividing the regeneration passage and the dehumidification passage from each other, a regeneration preheater installed upstream of the desiccant rotor in the dehumidification passage, and a cooler installed downstream of the desiccant rotor in the dehumidification passage; and an adsorptive cooler comprising an adsorber including a first sub-adsorber and a second sub-adsorber configured to adsorb a refrigerant at an adsorption temperature and desorb the refrigerant at a regeneration temperature, a condenser configured to condense the refrigerant, and an evaporator configured to evaporate the refrigerant, wherein the adsorber is connected to each of the external heat source and the regeneration preheater, and the regeneration preheater is heated by adsorption heat generated in the adsorber.

First claim

What is claimed is:

1. An adsorptive hybrid desiccant cooling system that includes an adsorptive cooler producing cool air by using an external heat source, the adsorptive hybrid desiccant cooling system comprising:
a desiccant cooler comprising a housing including a regeneration passage and a dehumidification passage through which air passes, a desiccant rotor installed inside the housing to be rotatable about a rotary shaft mounted on a partition wall dividing the regeneration passage and the dehumidification passage from each other, a regeneration preheater installed upstream of the desiccant rotor in the regeneration passage, and a cooler installed downstream of the desiccant rotor in the dehumidification passage; and
the adsorptive cooler comprising an adsorber including a first sub-adsorber and a second sub-adsorber configured to adsorb a refrigerant at an adsorption temperature and desorb the refrigerant at a regeneration temperature, a condenser configured to condense the refrigerant that is desorbed from the adsorber and is in a gaseous state so as to provide heating by using condensation heat, and an evaporator configured to evaporate the refrigerant and transfer the refrigerant in a gaseous state to the adsorber and produce the cool air by using evaporation heat,
wherein the adsorber is connected to each of the external heat source and the regeneration preheater, and
wherein the regeneration preheater is heated by adsorption heat generated in the adsorber.

2. The adsorptive hybrid desiccant cooling system of claim 1 , further comprising a heating coil between the regeneration preheater and the desiccant rotor in the regeneration passage, the heating coil being heated by the external heat source, a heat of the external heat source having a temperature decreased by passing through the adsorber.

3. The adsorptive hybrid desiccant cooling system of claim 2 , wherein air introduced into the regeneration passage is heated by sequentially passing through the regeneration preheater and the heating coil, and the heated air regenerates the desiccant rotor passing through the regeneration passage.

4. The adsorptive hybrid desiccant cooling system of claim 1 , wherein air introduced into the dehumidification passage is dehumidified by passing through the desiccant rotor in the dehumidification passage, and the dehumidified air is cooled by passing through the cooler.

5. The adsorptive hybrid desiccant cooling system of claim 4 , wherein the desiccant cooler further comprises a re-cooler that is connected to the evaporator of the adsorptive cooler and installed downstream of the cooler in the dehumidification passage to re-cool the air that is cooled by passing through the cooler.

6. The adsorptive hybrid desiccant cooling system of claim 1 , wherein the cooler comprises a regenerative evaporative cooler.

7. The adsorptive hybrid desiccant cooling system of claim 1 , wherein the adsorptive cooler further comprises a plurality of refrigerant pipes respectively connecting the first sub-adsorber and the second sub-adsorber to the condenser and the evaporator, and
a refrigerant flowing in the plurality of refrigerant pipes sequentially circulates through the first sub-adsorber, the condenser, the evaporator, and the second sub-adsorber, or through the second sub-adsorber, the condenser, the evaporator, and the first sub-adsorber.

8. The adsorptive hybrid desiccant cooling system of claim 7 , wherein the adsorptive cooler further comprises:
a first refrigerant valve installed in a first refrigerant pipe of the plurality of refrigerant pipes connecting the first sub-adsorber to the condenser and the evaporator;
a second refrigerant valve installed in a second refrigerant pipe of the plurality of refrigerant pipes connecting the second sub-adsorber to the condenser and the evaporator; and
a third refrigerant valve installed in a third refrigerant pipe connecting the condenser and the evaporator.

9. The adsorptive hybrid desiccant cooling system of claim 7 , wherein the adsorptive cooler comprises:
a heat transfer medium pipe including a first heat transfer medium pipe connecting the regeneration preheater to the first sub-adsorber and the second sub-adsorber; and
a second heat transfer medium pipe connecting the external heat source to the first sub-adsorber and the second sub-adsorber.

10. The adsorptive hybrid desiccant cooling system of claim 9 , wherein the adsorptive cooler comprises:
a first heat transfer medium valve that is installed at an upstream end of the first sub-adsorber so as to connect one of the external heat source or the regeneration preheater to the upstream end of the first sub-adsorber;
a second heat transfer medium valve that is installed at a downstream end of the first sub-adsorber so as to connect the downstream end of the first sub-adsorber to the one of the external heat source or the regeneration preheater;
a third heat transfer medium valve that is installed at an upstream end of the second sub-adsorber so as to connect the one of the external heat source or the regeneration preheater to the upstream end of the second sub-adsorber; and
a fourth heat transfer medium valve that is installed at a downstream end of the second sub-adsorber so as to connect the downstream end of the second sub-adsorber to the one of the external heat source or the regeneration preheater.

11. The adsorptive hybrid desiccant cooling system of claim 10 , wherein the first heat transfer medium valve is installed at the upstream end of the first sub-adsorber, where the first heat transfer medium pipe and the second heat transfer medium pipe intersect with each other,
the second heat transfer medium valve is installed at the downstream end of the first sub-adsorber, where the first heat transfer medium pipe and the second heat transfer medium pipe are divided from each other,
the third heat transfer medium valve is installed at the upstream end of the second sub-adsorber, where the first heat transfer medium pipe and the second heat transfer medium pipe intersect with each other, and
the fourth heat transfer medium valve is installed at the downstream end of the second sub-adsorber, where the first heat transfer medium pipe and the second heat transfer medium pipe are divided from each other.

12. The adsorptive hybrid desiccant cooling system of claim 10 , wherein the first heat transfer medium valve connects the upstream end of the first sub-adsorber to the regeneration preheater,
the second heat transfer medium valve connects the downstream end of the first sub-adsorber to the regeneration preheater,
the third heat transfer medium valve connects the upstream end of the second sub-adsorber to the external heat source, and
the fourth heat transfer medium valve connects the downstream end of the second sub-adsorber to the external heat source.

13. The adsorptive hybrid desiccant cooling system of claim 12 , wherein an end of the first sub-adsorber at the first refrigerant pipe is connected to the evaporator to receive the refrigerant evaporated in the evaporator to adsorb the refrigerant, and
wherein an end of the second sub-adsorber at the second refrigerant pipe is connected to the condenser to transfer the refrigerant desorbed from the second sub-adsorber to the condenser.

14. The adsorptive hybrid desiccant cooling system of claim 10 , wherein the first heat transfer medium valve connects the upstream end of the first sub-adsorber to the external heat source,
the second heat transfer medium valve connects the downstream end of the first sub-adsorber to the external heat source,
the third heat transfer medium valve conn

Assignees

• Korea Inst Sci & Tech

Inventors

• Lee Dae Young

Classifications

• F24F2221/34

  Heater, e.g. gas burner, electric air heater · CPC title

• F24F2203/1032

  Desiccant wheel · CPC title

• F24F2003/1458

  using regenerators · CPC title

• F24F2003/144

  by dehumidification only · CPC title

• F24F3/1423 Primary

  with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants · CPC title