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Wet bulb depression, under saturated ambient air conditions:
- a)is always positive
- b)is always negative
- c)is always zero
- d)May have a value depending upon the dew point temperature
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Wet bulb depression, under saturated ambient air conditions:a)is alway...
WBD = 0 for saturated air
∴ DBT = WBT
∴ DBT = WBT
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Wet bulb depression, under saturated ambient air conditions:a)is alway...
Wet bulb depression refers to the difference between the dry bulb temperature and the wet bulb temperature. The dry bulb temperature is the air temperature measured by a normal thermometer, while the wet bulb temperature is measured by a thermometer with a wetted wick.
Under saturated ambient air conditions, the wet bulb temperature is equal to the dew point temperature, which is the temperature at which the air becomes saturated and condensation begins to occur. In this situation, the wet bulb depression will always be zero.
Explanation:
Definition of wet bulb depression
- Wet bulb depression is the difference between the dry bulb temperature and the wet bulb temperature.
- It is a measure of the evaporative cooling potential of the air.
Under saturated ambient air conditions
- Under saturated ambient air conditions, the air is already holding the maximum amount of moisture it can at a given temperature.
- The wet bulb temperature, which is measured by a thermometer with a wetted wick, is equal to the dew point temperature.
- The dew point temperature is the temperature at which the air becomes saturated and condensation begins to occur.
Wet bulb depression under saturated ambient air conditions
- Since the wet bulb temperature is equal to the dew point temperature under saturated conditions, the wet bulb depression will be zero.
- This means that the dry bulb temperature and the wet bulb temperature are the same, indicating that the air is saturated and no further evaporation can occur.
Significance of wet bulb depression
- Wet bulb depression is an important parameter in determining the cooling potential of the air.
- A higher wet bulb depression indicates that there is a larger temperature difference between the dry bulb and wet bulb temperatures, suggesting that more evaporation can occur and hence more cooling is possible.
- In contrast, a zero wet bulb depression indicates that the air is already saturated, and no further cooling through evaporation can take place.
Therefore, the correct answer is option 'C' - wet bulb depression is always zero under saturated ambient air conditions.
Under saturated ambient air conditions, the wet bulb temperature is equal to the dew point temperature, which is the temperature at which the air becomes saturated and condensation begins to occur. In this situation, the wet bulb depression will always be zero.
Explanation:
Definition of wet bulb depression
- Wet bulb depression is the difference between the dry bulb temperature and the wet bulb temperature.
- It is a measure of the evaporative cooling potential of the air.
Under saturated ambient air conditions
- Under saturated ambient air conditions, the air is already holding the maximum amount of moisture it can at a given temperature.
- The wet bulb temperature, which is measured by a thermometer with a wetted wick, is equal to the dew point temperature.
- The dew point temperature is the temperature at which the air becomes saturated and condensation begins to occur.
Wet bulb depression under saturated ambient air conditions
- Since the wet bulb temperature is equal to the dew point temperature under saturated conditions, the wet bulb depression will be zero.
- This means that the dry bulb temperature and the wet bulb temperature are the same, indicating that the air is saturated and no further evaporation can occur.
Significance of wet bulb depression
- Wet bulb depression is an important parameter in determining the cooling potential of the air.
- A higher wet bulb depression indicates that there is a larger temperature difference between the dry bulb and wet bulb temperatures, suggesting that more evaporation can occur and hence more cooling is possible.
- In contrast, a zero wet bulb depression indicates that the air is already saturated, and no further cooling through evaporation can take place.
Therefore, the correct answer is option 'C' - wet bulb depression is always zero under saturated ambient air conditions.
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Wet bulb depression, under saturated ambient air conditions:a)is always positiveb)is always negativec)is always zerod)May have a value depending upon the dew point temperatureCorrect answer is option 'C'. Can you explain this answer?
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