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mark957
05-05-2012, 03:34 PM
hello all.
I need to build a chiler that cooled to -30 C and heated to 60 C methanol.
my question is whether there are contraindications for the treated product.
if anyone has had experience with flammable methanol and what pressure it is recommended to keep the circuit closed.

aramis
21-05-2012, 04:27 AM
Looking ath the methanol saturation table it remains under atmospheric pressure all the way from -30C to +60C, so using it as refrigerant is out of the question and a secondary system would need to be explosion proof.

Im glad I have no experience with it and wouldn't even get willingly near the stuff! :o

Temp C Pressure barg
-30.000 -1.0085
-25.000 -1.0062
-20.000 -1.0030
-15.000 -0.99844
-10.000 -0.99223
-5.0000 -0.98385
0.00000 -0.97269
5.0000 -0.95799
10.000 -0.93887
15.000 -0.91426
20.000 -0.88293
25.000 -0.84344
30.000 -0.79411
35.000 -0.73304
40.000 -0.65807
45.000 -0.56676
50.000 -0.45641
55.000 -0.32397
60.000 -0.16612