Air cooled condenser (ACC) wind mitigation system

Patent metadata

Field	Value
Publication number	US-11067338-B2
Application number	US-201816116272-A
Country	US
Kind code	B2
Filing date	Aug 29, 2018
Priority date	Sep 1, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

The present disclosure relations to wind mitigation devices which include a deflector that having an inlet and an outlet. An axial fan is disposed above the outlet of the deflector and includes a shroud. The shroud of the axial fan and the outlet of the deflector are aligned along a common vertical axis. The deflector is adapted to receive an airflow at the inlet and direct the airflow through the outlet in a vertical direction toward the axial fan.

First claim

The invention claimed is:

1. A wind mitigation device comprising,
a deflector that includes an inlet and an outlet; and,
an axial fan disposed above the outlet of the deflector and including a shroud, the shroud of the axial fan and the outlet of the deflector being aligned along a common vertical axis;
wherein the deflector is adapted to receive an airflow at the inlet and direct the airflow through the outlet in a vertical direction toward the axial fan,
wherein the deflector inlet is aligned along an axis different from the axis of the shroud and the deflector outlet, and
wherein the deflector inlet and the deflector outlet have identical diameters.

2. The wind mitigation device of claim 1 , wherein the outlet of the deflector is positioned adjacent to a bottom portion of the shroud.

3. The wind mitigation device of claim 1 , wherein the deflector is an elbow shape such that the deflector inlet is substantially aligned along a horizontal axis perpendicular to the common vertical axis of the shroud and the deflector outlet.

4. The wind mitigation device of claim 3 , wherein the deflector further comprises an inner surface including one or more vanes positioned along the inner surface.

5. The wind mitigation device of claim 4 , wherein the deflector has three vanes positioned along the inner surface of the deflector.

6. The wind mitigation device of claim 1 , wherein the diameter of the deflector inlet and deflector outlet is from 3 m to 10 m.

7. The wind mitigation device of claim 1 , wherein the shroud has a diameter greater than a diameter of the deflector outlet.

8. The wind mitigation device of claim 1 , wherein the deflector further comprises a scoop section connected to a vertical pipe section, the inlet of the deflector being located at an open front wall of the scoop section and the outlet of the deflector being located on the vertical pipe section.

9. The wind mitigation device of claim 8 , wherein the scoop section comprises a bottom wall and a back wall configured to direct the airflow into the vertical pipe section.

10. The wind mitigation device of claim 9 , wherein the bottom wall is substantially aligned with a horizontal axis and the back wall extends at an angle of about 45 degrees to about 75 degrees with respect to the horizontal axis, including about 60 degrees.

11. The wind mitigation device of claim 10 , wherein the bottom wall is aligned with an axis extending at an angle of about −5 degrees to about −35 degrees with respect to the horizontal axis, including about −20 degrees.

12. The wind mitigation device of claim 8 , wherein the back wall has a length of about 5 m to about 10 m.

13. The wind mitigation device of claim 1 , further comprising one or more powered rollers configured to rotate the deflector such that the deflector inlet is aligned with a direction of the airflow.

14. The wind mitigation device of claim 13 , wherein the plurality of deflectors are arranged along an outer perimeter of the array.

15. The wind mitigation device of claim 1 , further comprising a plurality of deflectors arranged in an array and a plurality of axial fans and shrouds disposed above the plurality of deflectors.

16. An air-cooled condensing system including the wind mitigation device of claim 1 .

17. The wind mitigation device of claim 1 , wherein the deflector is adapted to increase the airflow available at the axial fan by 16% to 45%.

18. An air-cooled condensing system comprising:
a plurality of deflectors each including an inlet and an outlet;
a plurality of axial fans disposed above the outlets of the deflectors and each including a shroud, the shrouds of the axial fans and the outlets of the deflectors each being aligned along a common vertical axis, the deflectors each configured to receive an airflow at the inlets and direct the airflow through the outlets in a vertical direction toward the axial fans;
a platform supporting the axial fans and shrouds and optionally supporting the plurality of deflectors;
a heat exchanger disposed above the platform to receive the airflow from the axial fans,
wherein the inlet of each deflector is aligned along an axis different from the axis of the shroud and the deflector outlet, and
wherein the inlet and outlet of each deflector have identical diameters.

19. A wind mitigation device comprising,
a deflector that includes an inlet and an outlet; and,
an axial fan disposed above the outlet of the deflector and including a shroud, the shroud of the axial fan and the outlet of the deflector being aligned along a common vertical axis;
wherein the deflector is adapted to receive an airflow at the inlet and direct the airflow through the outlet in a vertical direction toward the axial fan; and
wherein the deflector is an elbow shape such that the deflector inlet is substantially aligned along a horizontal axis perpendicular to the common vertical axis of the shroud and the deflector outlet;
wherein the deflector inlet and the deflector outlet have identical diameters.

Assignees

• Babcock & Wilcox Co

Inventors

• Habib Tony F
• Hopkins Mitchell W

Classifications

• F28F9/0268

  in the form of multiple deflectors for channeling the heat exchange medium · CPC title

• F28F27/00

  Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus (control arrangements in general G05) · CPC title

• F28B11/00

  Controlling arrangements with features specially adapted for condensers (control arrangements in general G05) · CPC title

• F28B1/06 Primary

  using air or other gas as the cooling medium · CPC title

• F28F2250/08

  Fluid driving means, e.g. pumps, fans · CPC title