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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 4 (Q.No. 17)
17.
In chemical dehumidification process,
dew point temperature decreases
wet bulb temperature decreases
dry bulb temperature increases
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 1 of 2.

SANDEEP said:   10 years ago
WBT CONSTANT.
DBT INCREASES.
DPT DECREASES.

Kishan patel said:   9 years ago
In dehumidification, point rolls toward downward in the psychrometric chart.

So I think that DPT AND WBT decreases but DBT remains constant.

Neeraj said:   8 years ago
Good @Sandeep.

David said:   8 years ago
They asked in chemical dehumidification process. Then what about the answer?

Pappu said:   7 years ago
D. Is correct because chemical dehumidification process is a inclined downward line with increasing DBT.

Shibunath said:   7 years ago
Chemical dehumidification takes place along constant enthalpy line i.e WBT line. Hence, WBT remains constant while DBT, DPT and specific humidity decrease.

Vishnu said:   7 years ago
In chemical dehumidification process WBT will remain constant.

Muhammad Ibrar Kaleem said:   7 years ago
Option D is correct.

By tracing the line of de-humidification on Psychometric chart. It is clear that;

1) Wet Bulb Temperature DECREASES.
2) DEW Point Temperature DECREASES.

As for dehumidification, some amount of vapours condenses, giving out energy in the heat which raises the sensible temperature!

So, Option D is correct

Boyka said:   6 years ago
In chemical dehumidification, chemical-like salt is spread in the stream of air which absorbs water vapour but the temperature difference caused cannot be controlled.

Mayur said:   5 years ago
DBT is constant WBT &DPT decreases.
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