In ________ cooling tower there is no direct contact between the water and Air. • Dry type • Evaporative type • Once through • All of the above

In ________ cooling tower there is no direct contact between the water and Air.
• Dry type
• Evaporative type
• Once through
• All of the above
by

1 Answer

Answer :

All of the above
by

Related questions

Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air. (A) Wet bulb (B) Dry bulb (C) Saturation (D) Dew point

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Last Answer : Option A

A ______ is a specialized heat exchanger in which air and water are brought into direct contact with each otherin order to reduce the water's temperature. a. Cooling tower b. Heating tower c. Both d. All are wrong

Description : A ______ is a specialized heat exchanger in which air and water are brought into direct contact with each otherin order to reduce the water's temperature. a. Cooling tower b. Heating tower c. Both d. All are wrong

Last Answer : cooling tower

The cooling tower uses the phenomenon of evaporative cooling to cool warm water above the dbt of air. A. true B. false

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Last Answer : ANSWER : B

Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C? (A) Humidification only (B) Heating only (C) Both heating and humidification (D) Evaporative cooling

Description : Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C ... (B) Heating only (C) Both heating and humidification (D) Evaporative cooling

Last Answer : (C) Both heating and humidification

_______ cooling towers use a process similar to the one found in small evaporative cooling units. a. Hyperboloid b. Tower c. Condensate loop d. None

Description : _______ cooling towers use a process similar to the one found in small evaporative cooling units. a. Hyperboloid b. Tower c. Condensate loop d. None

Last Answer : a. Hyperboloid

A better indicators for cooling tower performance is _____. • Wet bulb temperature • Dry bulb temperature • Range • Approach

Description : A better indicators for cooling tower performance is _____. • Wet bulb temperature • Dry bulb temperature • Range • Approach

Last Answer : Approach

When sizing a cooling tower the highest anticipate__________ should be used? • Dry bulb • Wet bulb • Both dry and wet bulb • None of the above

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Last Answer : Wet bulb

During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant. (A) Wet bulb temperature (B) Partial pressure of water vapor (C) Relative humidity (D) None of these

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Last Answer : (A) Wet bulb temperature

The cooling by a desert Cooler is based on: (1) Hot air replacement (2) Air dehydration (3) Evaporative Cooling (4) Air Rehydration

Description : The cooling by a desert Cooler is based on: (1) Hot air replacement (2) Air dehydration (3) Evaporative Cooling (4) Air Rehydration

Last Answer : (3) Evaporative Cooling Explanation: Nature's most efficient means of cooling is through the evaporation of water. Desert coolers make use of evaporative cooling that works on the principle of heat ... , energy is lost from the air, reducing the temperature. Thus, cooling effect is produced.

The cooling by a desert Cooler is based on: (1) Hot air replacement (2) Air dehydration (3) Evaporative Cooling (4) Air Rehydration

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Which of the following is the simplest method of cooling the condenser water? • Spray cooling pond • Cooling tower • Indirect air cooling • Hyperbolic cooling tower

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Last Answer : Spray cooling pond

L/G ratio in a cooling tower is a ratio of _____. • Length and girth • Length and temperature gradient • Water flow rate and air mass flow rate • Air mass flow rate and water flow rate

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Last Answer : Water flow rate and air mass flow rate

In natural draft cooling tower the air flow is obtained by___________ a) Difference in air pressure b) difference in air temperature c) Difference in air speed d) none of the above

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Last Answer : Difference in air pressure

How is air produced in mechanical draught cooling tower? a) Air Tuyeres b) Propeller fans c) Air blowers d) Louvre

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Last Answer : Propeller fans

The temperature of water cooled in cooling tower is always __________ temperature of entering air. (A) More than the wet bulb (B) Less than the wet bulb (C) Equal to the wet bulb (D) Equal to the dry bulb

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Last Answer : (A) More than the wet bulb

The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air. (A) Ambient (B) Dry bulb (C) Dew point (D) Wet bulb

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In cooling tower ,higher temperature __________ corrosion potential • Decrease • Increase • Temperature has no effect on corrosion

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Last Answer : Increase

Which of the following remains constant during evaporative cooling process with recirculated water supply? (A) Relative humidity (B) Partial pressure of vapour (C) Wet bulb temperature (D) None of these

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Last Answer : (C) Wet bulb temperature

Which of the following decreases during evaporative cooling process with recirculated water supply? (A) Wet bulb temperature (B) Relative humidity (C) Partial pressure of vapour (D) None of these

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Last Answer : (D) None of these

Which of the following increases during evaporative cooling process with recirculated water supply? (A) Wet bulb temperature (B) Relative humidity (C) Partial pressure of vapour (D) Both (B) and (C)

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Last Answer : (D) Both (B) and (C)

In adiabatic evaporative cooling, heat transfer between chamber and surroundings is ____ A. zero B. high C. low D. none of the mentioned

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The most common summer cooling system in greenhouses is: a. Package evaporative coolers b. Fan-tube cooling system c. Fog evaporative cooling d. Fan-and-pad evaporative cooling

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Evaporative cooling process employs a combination of cooling and humidification in which the (A) Sensible heat is added (B) Sensible heat is removed and the latent heat is added (C) Latent heat is removed (D) Sensible heat is added and latent heat is removed

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Wet cooling towers operate on the principle of ............... A Condensation. B Evaporative Cooling C Both of the above D None of the above

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Which of the following terms is used to describe animals that maintain a constant body temperature by producing heat by metabolic oxidations (muscle contractions) and losing excess heat by evaporative cooling? a) poikilotherms b) heterotherms c) homeotherms d) none of these

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Which among the following are the components of natural draft cooling tower a) Supply basin b) reinforced concrete c) Hot water distribution d) none of the above

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The ratio of dissolved solids in circulating water to the dissolved solids in makeup water is called a) Liquid gas ratio b) Cycle of concentration c) Cooling tower effectiveness d) None of the above

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Which one of the following is true to estimate the range of cooling tower? a) Range = cooling water inlet temperature – wet bulb temperature b) Range = cooling water outlet temperature – wet bulb temperature c) Range = heat load in kcal per hour / water circulation in lines per hour d) None of the above

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In which system is Cooling of hot water is done on tray as step by? a) Mechanical draught cooling system b) Hyperbolic cooling tower c) Atmospheric cooling tower d) Wet cooling tower

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In which system is Cooling of hot water is done on tray as step by? a. Mechanical draught cooling system b. Hyperbolic cooling tower c. Atmospheric cooling tower d. Wet cooling tower

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The ratio of dissolved solids in circulating water to dissolved solids in makeup water is called. • Liquid gas ratio • Cycle of concentration • Cooling tower effectiveness • None of the above

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Last Answer : Cycle of concentration

The ……….-induced response of cooling tower is the key factor to improve safety and to reduce tower crack. a) wind c) heat b) water d) steam

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. In which system is Cooling of hot water is done on tray as step by? a) Mechanical draught cooling system b) Hyperbolic cooling tower c) Atmospheric cooling tower d) Wet cooling tower

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The pollutants that are present depend on __________ building material, as well. • Cooling tower • Water tower • Steam tower • Fire tower

Description : The pollutants that are present depend on __________ building material, as well. • Cooling tower • Water tower • Steam tower • Fire tower

Last Answer : cooling water

How do you service a cooling tower? • Ensure Proper Airflow. . Clean Your Tubes. • Inspect the Water Pump. • All of above

Description : How do you service a cooling tower? • Ensure Proper Airflow. . Clean Your Tubes. • Inspect the Water Pump. • All of above

Last Answer : all of above

. How can we increase the efficiency of a cooling tower? a. Save energy. b. Reduce the amount of water being consumed. c. Decrease the amount of chemicals required for water treatment. d. All of above

Description : . How can we increase the efficiency of a cooling tower? a. Save energy. b. Reduce the amount of water being consumed. c. Decrease the amount of chemicals required for water treatment. d. All of above

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How do you service a cooling tower? • Ensure Proper Airflow. Clean Your Tubes. • Inspect the Water Pump. • All of above

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Last Answer : All of above

How can we increase the efficiency of a cooling tower? a. Save energy. b. Reduce the amount of water being consumed. c. Decrease the amount of chemicals required for water treatment. d. All of above

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Last Answer : d. All of above

Pollution caused by cooling tower includes 1. Fouling 2. Limestone formation 3. Corrosion 4. All of above

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Last Answer : All of above

In hyperboloid cooling towers the material is filled at 1. Tower’s bottom 2. Tower’s top 3. Near tower 4. None of above

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In the natural draft cooling tower_________ is not required a) Fan b) tower c) Nozzle d) none of the above

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Last Answer : Fan

Cooling tower is a ______device a) Heat absorption b) heat rejection c) Both a and b c) neither a nor b

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Last Answer : heat rejection

Cooling tower effectiveness is the ratio of a) Range/( Range + approach) b) Approach/(range + approach) c) Range /(range - approach) d) Approach/ /(range - approach)

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Last Answer : Range/( Range + approach)

Natural draft cooling tower are mainly used in a) Steel Industry b) Alumina industry c) Fertilizer industry d) Power station

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Last Answer : Power station

The first hyperbolic cooling tower was built in... a. 1916 b. 1917 c. 1918 d. 1919

Description : The first hyperbolic cooling tower was built in... a. 1916 b. 1917 c. 1918 d. 1919

Last Answer : 1918

Normally the guaranteed best approach a cooling tower can achieve is _____. • 5°C • 12°C • 8°C • 2.8°C

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Last Answer : 2.8°C

Cooling tower effectiveness is the ratio of _____. • Range/(range + approach) • Approach/(range + approach) • Range/ Approach • Approach/ Range

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Last Answer : Range/(range + approach)

Cooling efficiency of a cooling tower is significantly affected under cross-wind condition and might decrease to……… in the range of moderate to high wind velocity condition. a) 50% c) 25% b) 75% d) 90%

Description : Cooling efficiency of a cooling tower is significantly affected under cross-wind condition and might decrease to……… in the range of moderate to high wind velocity condition. a) 50% c) 25% b) 75% d) 90%

Last Answer : 75%

The first hyperboloid shaped cooling tower was introduced by the Dutch engineers Frederik van Iterson and Gerard Kuypers and built in ……….. a) 1918 c) 1919 b) 1870 d) 1920

Description : The first hyperboloid shaped cooling tower was introduced by the Dutch engineers Frederik van Iterson andGerard Kuypers and built in ……….. a) 1918 c) 1919 b) 1870 d) 1920

Last Answer : 1918