Heat exchange system

Patent metadata

Field	Value
Publication number	US-11083109-B2
Application number	US-201715678029-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Jun 21, 2017
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

A heat exchange system includes a heat-absorbing substance such as Liquid Natural Gas (LNG), a heat dissipation apparatus, a water storage tank, a heating portion, and a cooling portion. The heating portion is coupled between the LNG and the water storage tank. The cooling portion is coupled between the heat dissipation apparatus and the water storage tank. The cooling portion transfers heat of the heat dissipation apparatus to water of the water storage tank to heat the heating portion, and the heating portion transfers heat of the water of the water storage tank to the LNG.

First claim

What is claimed is:

1. A heat exchange system comprising:
a cold source to be heated;
a heat dissipation apparatus to be cooled;
a water storage tank;
a first heat exchanger coupled between the cold source and the water storage tank;
a storage tank coupled to the heating portion; and
a second heat exchanger coupled between the heat dissipation apparatus and the water storage tank;
wherein the second heat exchanger transfers heat of the heat dissipation apparatus to water in the water storage tank to heat the first heat exchanger, the first heat exchanger transfers heat of the water in the water storage tank to the cold source to heat the cold source, and the storage tank stores the cold source to cool the heat dissipation apparatus; and
wherein the second heat exchanger comprises a chilled water loop, a cooling medium loop, and a cooling water loop, chilled water flows in the chilled water loop to absorb heat of the heat source and dissipate heat to cooling medium of the cooling medium loop, the cooling medium dissipates heat to cooling water of the cooling water loop, and the cooling water of the cooling water loop transmits heat to water of the water storage tank.

2. The heat exchange system of claim 1 , wherein the cold source is liquefied natural gas (LNG), the LNG is stored in a LNG tank.

3. The heat exchange system of claim 1 , wherein the first heat exchanger comprises a first sub heat exchanger and a second sub heat exchanger, the first sub heat exchanger and the second sub heat exchanger are coupled to form a loop, a intermediate heating medium flows in the loop, water of the water storage tank flows in the second sub exchanger to transfer heat to the intermediate heating medium, and the cold source flows in the first sub exchanger to absorb heat of the intermediate heating medium.

4. The heat exchange system of claim 3 , wherein the cold source and the intermediate heating medium are separated in the first sub heat exchanger, and the intermediate heating medium and the water are separated in the second sub heat exchanger.

5. The heat exchange system of claim 3 , wherein a first pump is coupled between the cold source and the first sub heat exchanger, and the first pump pumps the cold source into the first sub heat exchanger.

6. The heat exchange system of claim 3 , wherein a second pump is coupled between the first sub heat exchanger and the second sub heat exchanger, and the second pump drives the plurality of intermediate heating medium to flow in the loop.

7. The heat exchange system of claim 6 , wherein a turbine is in the loop, and the plurality of intermediate heating medium flows through the turbine to generate electric power.

8. The heat exchange system of claim 3 , wherein a third pump is coupled between the second sub heat exchanger and the water storage tank, and the third pump pumps water of the water storage tank into the second sub heat exchanger.

9. The heat exchange system of claim 3 , wherein the first heat exchanger further comprises a third sub heat exchanger, and the cold source flows from the first sub heat exchanger into the third sub heat exchanger, and the water flows from the second sub heat exchanger into the third sub heat exchanger to dissipate heat to the cold source.

10. The heat exchange system of claim 9 , wherein the third sub heat exchanger comprises a gas outlet, and the cold source is gasified in the third sub heat exchanger and is outputted through the gas outlet.

11. The heat exchange system of claim 9 , wherein the third sub heat exchanger comprises a water outlet, and water in the third sub heat exchanger flows out of the third sub heat exchanger and flows back to the water storage tank.

12. The heat exchange system of claim 1 , wherein the storage tank comprises a first sub storage tank and a second sub storage tank, the first sub storage tank and the second sub storage tank store the cold source to cool the heat dissipation apparatus.

13. The heat exchanger system of claim 1 , wherein the cooling water of the cooling water loop transfers heat to water of the water storage tank through a sixth heat exchanger.

14. The heat exchanger system of claim 13 , wherein the cooling water loop comprises a water tower to dissipate heat of the cooling water.

15. The heat exchanger system of claim 13 , wherein the chilled water loop is coupled to the sixth heat exchanger, and the chilled water of the chilled water loop flows in the sixth heat exchanger to dissipate heat to the water of the water storage tank when a temperature of the water in the water storage tank is lower than a lowest temperature of the chilled water in the chilled water loop.

16. The heat exchanger system of claim 13 , wherein the first heat exchanger comprises a water tower coupled to the chilled water loop, and the water tower dissipates heat of the chilled water in the chilled water loop.

17. The heat exchanger system of claim 13 , wherein a seventh heat exchanger is coupled between the chilled water loop and the water storage tank, and the seventh heat exchanger transfers heat of chilled water of the chilled water loop to water of the water storage tank.

Assignees

• Hongfujin Prec Electronics Tianjin Co Ltd

Inventors

• Mao Tze-Chern
• Fu Yen-Chun
• Chang Chih-Hung
• Wei Chao-Ke
• Chang Li-Wen
• Liu Ching-Tang
• Chan Hung-Chou

Classifications

• F17C9/04

  Recovery of thermal energy · CPC title

• F24F2005/0025

  using heat exchange fluid storage tanks · CPC title

• F24F5/0017

  using cold storage bodies, e.g. ice · CPC title

• F28D15/00

  Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls {; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies (F28D17/00, F28D19/00, F28D20/00 take precedence)} · CPC title

• F24F13/30

  Arrangement or mounting of heat-exchangers · CPC title