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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 3 (Q.No. 48)
48.
The freezing point of R-12 is
-86.6°C
-95.2°C
-107.7°C
-135.8°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Saifudheen M H said:   2 years ago
The freezing point of R-12 is -135.8 C.
The boiling point of R-12 is -29.8 C.
The melting point of R-12 is -157.7 C.

How could this be right, since the melting point must always have a higher temperature than the freezing point?
I think the freezing point is -157.7 and the melting point is -135.8.

Kajal Patil said:   5 years ago
Freezing point for R12 is -157.5°.

Shivanand said:   8 years ago
Freezing point = 157.5° C.
Boiling point = -29.8° C.

Ref: R K Rajput book.

D J said:   9 years ago
Freezing point of R-12 is -135.8 C.
Boiling point of R-12 is -29.8 C.
Melting point of R-12 is -157.7 C.
(1)

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