Cooling Tower Performance Flashcards by exekiel delos reyes

Q

Cooling Tower Performance

A

Ability of tower to cool water

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Q

Cooling Range

A

Hot water minus cold water temperature

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Q

Cooling Approach

A

Cold water minus wet-bulb temperature

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Q

Wet-Bulb Temperature

A

Lowest achievable cooling temperature

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Q

Hot Water Temperature

A

Water entering the tower

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Q

Cold Water Temperature

A

Water leaving the tower

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Q

Design Range

A

Range used for tower design

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Q

Design Approach

A

Approach used for tower design

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Q

Heat Load

A

Total heat to be removed

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Q

Cooling Capacity

A

Heat removed by tower

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Q

Water Flow Rate

A

Amount of water circulating

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Q

Air Flow Rate

A

Amount of air passing through

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Q

Air-to-Water Ratio

A

Ratio of air to water flow

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Q

Thermal Performance

A

Effectiveness of heat removal

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Q

Tower Efficiency

A

Measure of cooling effectiveness

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Q

Cooling Effectiveness

A

Actual cooling vs ideal cooling

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Q

Evaporation Loss

A

Water lost by evaporation

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Q

Drift Loss

A

Water droplets carried by air

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Q

Blowdown Loss

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A

Water removed to control solids

Q

Makeup Water

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A

Water added to system

Q

Cycles of Concentration

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A

Measure of dissolved solids buildup

Q

Fan Power

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A

Power used by cooling tower fan

Q

Fan Efficiency

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A

Effectiveness of fan operation

Q

Fill Efficiency

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A

Effectiveness of tower fill

Cooling Tower Fill

Increases contact area

Pressure Drop

Air resistance in tower

Approach Deviation

Difference from design approach

Range Deviation

Difference from design range

Seasonal Performance

Effect of weather on cooling

Ambient Conditions

Surrounding air conditions

Humidity

Moisture content of air

Air Recirculation

Hot air re-entering tower

Fouling

Dirt buildup on fill

Scaling

Mineral deposits on surfaces

Biofouling

Growth of algae or bacteria

Drift Eliminator Efficiency

Ability to reduce water loss

Tower Loading

Water flow per unit area

Heat Transfer Rate

Speed of heat removal

Thermal Balance

Energy in equals energy out

Performance Test

Measurement of tower output

Test Code (CTI/ASME)

Standard for testing

Design Conditions

Assumed operating conditions

Operating Conditions

Actual working conditions

Performance Degradation

Loss of efficiency over time

Optimization

Improving tower performance