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Wind Effects and SprayEnhancement Test Plans

John S. Maulbetsch

Michael N. DiFilippo

CEC/EPRI Advanced Cooling Strategies/Technologies Conference

Sacramento, California

May 31---June 2, 2005

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2

AAHE--Retrofit

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3

CondensingMedia

Ducting

Wet Fill

Cool

Ambient Air 

Cool

Ambient Air 

HotWater 

Marley AAHE--New Tower 

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 N

0’ 20’ 40’

Stairway

Visual Screen

Visual Screen

Exterior Walkway

Wind Wing

4J

2J

3J

1J

4I

2I

3I

1I

4H

2H

3H

1H

4G

2G

3G

1G

4F

2F

3F

1F

Fan Screen Support

Cell Arrangement

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Reflux cells

Primary spray test cell

Candidate fan monitoring cells for wind study(Four or five to be chosen----three

upwind; one interior; one downwind)

N

1A

4B 3B 2B 1B

4A 3A 2A

4C 3A 2A 1A

4D 3C 2C 1C

4E 3E 2E 1E

4F 3F 2F 1F

4G 3G 2G 1G

4H 3H 2H 1H

1J

4I 3I 2I 1I

Prevailing Winds---Summer 

4J 3J 2J

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Air Velocity

Measurements

 

A A

A A

Prevailing Winds---Summer 

B BB

Anemometer locations :

A: four at points of maximum

velocity; B---6 radially distributed

B BB

Fan bridge

Hub

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Test Cell 2I – Full Array(isometric)

Spray Nozzle

8-Spray Pattern

4-Spray Pattern

Upper, Mid

& Lower Level

Spray Patterns

Beneath-the-Fan

Spray Pattern

Upper Sprays

Mid Sprays

Lower Sprays

Beneath-the Fan Sprays

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East Face Perimeter Array(looking West)

Spray Nozzle

0’ 20’ 40’

45’6”

Steam Header 

Plenum

Windwall

Exterior Walkway

Visual

Screen

   W   i  n  g   W  a   l   l

I Cells H CellsJ Cells

Fan Screen

Support

   2   1   ’   0   ”

   2   0   ’   8   ”

   2   0   ’   8   ”

   6   2   ’   4   ”

~49’ Nozzle Elev

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Spray Nozzle

South Face Perimeter Array(looking North)

0’ 20’ 40’

Steam Header 

Wind Wall

Wind Wing

VisualScreen

Visual

Screen

41’8”

Plenum

   2   1   ’   0

   ”

   2   0   ’   8   ”

   2   0   ’   8   ”

   6   2   ’   4   ”

Exterior Walkway

Row 1Row 2Row 3Row 4

Fan Screen

Support

~49’ Nozzle Elev

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Spray Nozzle

Test Cell 2I – Array Details

(beneath fan)

0’ 20’ 40’ 60’

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West Face Perimeter Array(looking East)

Spray Nozzle

0’ 20’ 40’

45’6”

Steam Header 

Plenum

Windwall

Exterior Walkway

Visual

Screen

Wi  n gW al  l  

I CellsH Cells J Cells

Fan Screen

Support

   2   1   ’   0   ”

   2   0   ’   8   ”

   2   0   ’   8   ”

   6   2   ’   4   ”

~49’ Nozzle Elev