Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion


As relative humidity decreases, the dew point temperature will be __________ wet bulb temperature.

[A]. same as
[B]. lower than
[C]. higher man

Answer: Option B


No answer description available for this question.

Chandu said: (Sep 16, 2013)  
As relative humidity decreases the moisture content in air decreases that leads to increase in dry bulb temperature.

Sagar said: (Jan 13, 2016)  
Is there any explanation practically?

Sudhir said: (Mar 1, 2016)  
Not satisfied, please explain as per question.

Ghg said: (Apr 5, 2016)  
Don't know check on our own effort.

Love Bhardwaj said: (May 20, 2016)  
Just go through the Psychometric Chart and observe the changes by decreasing the Relative humidity by 10%.

Amit said: (Jun 4, 2016)  
I agree with Bhardwaj.

With the help of Psychometric Chart, we observe the changes.

Satish Hiremath said: (Jun 16, 2016)  
The dewpoint temperature is the temperature at which the air can no longer "hold" all of the water vapor which is mixed with it, and some of the water vapor must condense into liquid water. The dew point is always lower than (or equal to) the air temperature,

So only two conditions is considered for Dew point:

1. If the dew-point temperature is close to the dry air temperature - the relative humidity is high.

2. If the dew point is well below the dry air temperature - the relative humidity is low.

Hitesh Daka said: (Aug 27, 2016)  
Great @Satish Hiremath.

Rajesh said: (Mar 17, 2017)  
DBT>WBT>DPT Unless there isn't 100% RH (Saturated).

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