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Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.
- a)25°C
- b)30°C
- c)42°C
- d)48° C
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Ambient air dry- bulb temperature is 45°C and wet bulb temperatur...
It should be greater than 27oC
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Ambient air dry- bulb temperature is 45°C and wet bulb temperatur...
To determine the lowest possible condensing temperature for an evaporative cooled condenser, we need to consider the dry-bulb temperature and wet-bulb temperature of the ambient air.
1. Dry-Bulb Temperature: The dry-bulb temperature (DBT) is the temperature of the ambient air measured by a regular thermometer. In this case, the DBT is given as 45°C.
2. Wet-Bulb Temperature: The wet-bulb temperature (WBT) is the temperature of the ambient air measured by a thermometer wrapped in a wet cloth, which measures the cooling effect of evaporation. In this case, the WBT is given as 27°C.
3. Approach: The evaporative cooling process involves the evaporation of water to cool down the condenser. The cooling effect is determined by the difference between the dry-bulb temperature and the wet-bulb temperature. The lower the wet-bulb temperature, the greater the cooling effect.
Now, let's analyze the given options for condensing temperature:
a) 25°C: This option is lower than both the dry-bulb temperature and the wet-bulb temperature, making it a possible choice.
b) 30°C: This option is higher than the wet-bulb temperature but lower than the dry-bulb temperature. As the wet-bulb temperature is the limiting factor for cooling, this is the lowest possible condensing temperature.
c) 42°C: This option is higher than both the dry-bulb temperature and the wet-bulb temperature, making it unsuitable for evaporative cooling.
d) 48°C: This option is higher than both the dry-bulb temperature and the wet-bulb temperature, making it unsuitable for evaporative cooling.
Therefore, the correct answer is option 'b' - 30°C. It is the lowest possible condensing temperature that can be achieved with the given ambient air conditions.
1. Dry-Bulb Temperature: The dry-bulb temperature (DBT) is the temperature of the ambient air measured by a regular thermometer. In this case, the DBT is given as 45°C.
2. Wet-Bulb Temperature: The wet-bulb temperature (WBT) is the temperature of the ambient air measured by a thermometer wrapped in a wet cloth, which measures the cooling effect of evaporation. In this case, the WBT is given as 27°C.
3. Approach: The evaporative cooling process involves the evaporation of water to cool down the condenser. The cooling effect is determined by the difference between the dry-bulb temperature and the wet-bulb temperature. The lower the wet-bulb temperature, the greater the cooling effect.
Now, let's analyze the given options for condensing temperature:
a) 25°C: This option is lower than both the dry-bulb temperature and the wet-bulb temperature, making it a possible choice.
b) 30°C: This option is higher than the wet-bulb temperature but lower than the dry-bulb temperature. As the wet-bulb temperature is the limiting factor for cooling, this is the lowest possible condensing temperature.
c) 42°C: This option is higher than both the dry-bulb temperature and the wet-bulb temperature, making it unsuitable for evaporative cooling.
d) 48°C: This option is higher than both the dry-bulb temperature and the wet-bulb temperature, making it unsuitable for evaporative cooling.
Therefore, the correct answer is option 'b' - 30°C. It is the lowest possible condensing temperature that can be achieved with the given ambient air conditions.
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Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer?.
Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Ambient air dry- bulb temperature is 45°C and wet bulb temperature is27°C. Select the lowest possible condensing temperature from the following for an evaporative cooled condenser.a)25°Cb)30°Cc)42°Cd)48° CCorrect answer is option 'B'. Can you explain this answer?.
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