|
Thread Number: 44891
R-12 in Fridges |
[Down to Last] |  |
| Post# 658483 2/6/2013 at 15:01 (4,112 days old) by firedome (Binghamton NY & Lake Champlain VT) | ||
 | ||
|
| Post# 658486 , Reply# 1 2/6/2013 at 15:03 (4,112 days old) by danemodsandy (The Bramford, Apt. 7-E) | ||
Um.... | ||
Post# 658490 , Reply# 2 2/6/2013 at 15:22 (4,112 days old) by kb0nes  (Burnsville, MN) |
||
About 60 years
Time frame would be early 30's to mid-90's
I'd think its not all that valuable for home refrigeration since household sealed systems seldom leak. Also most service techs doing sealed system work are likely reclaiming the R-12 for reuse. The big aftermarket use was for topping off auto AC systems. The value of those small cans of R-12 is likely as high as it will ever be, eventually the demand will fall off and so will the value. R-12 use in cars ended by 1993-94 so except for collector cars demand is starting to wane already. | ||
| Post# 658492 , Reply# 3 2/6/2013 at 15:25 (4,112 days old) by firedome (Binghamton NY & Lake Champlain VT) | ||
|
Yes we do know...
since we restore antique cars. Not too bad a buy at 88 cents/can at K-Mart back in '87 when they were trying to get rid of it - kinda like light bulbs now - we've stocked up on those too! But we've no old cars left newer than 1958, the next project being a 1916 Model T Speedster - a bit of a challenge to A/C a motor, 2 seats and frame!
| ||
| Post# 658497 , Reply# 4 2/6/2013 at 15:33 (4,112 days old) by firedome (Binghamton NY & Lake Champlain VT) | ||
|
Actually we had 2 cases | ||
|
Post# 658507 , Reply# 5 2/6/2013 at 16:29 (4,112 days old) by goatfarmer (South Bend, home of Champions) |
||
 | ||
| Post# 658516 , Reply# 6 2/6/2013 at 16:58 (4,112 days old) by arbilab (Ft Worth TX (Ridglea)) | ||
 | ||
| Post# 658541 , Reply# 8 2/6/2013 at 18:25 (4,112 days old) by athanasius80 (California) | ||
I don't think Freon was invented to replace Sulfur Dioxide, I think it was invented to replace Methyl Chloride. (Well I know of no Sulfur Dioxide deaths, I do know of several Methyl Chloride deaths in the 1920s from leaky compressors.)
I think everyone had phased out of Sulfur Dioxide by around 1941-1941. You look at fridge catalogs from that period, and they place a lot of emphasis on the "new convenient" frozen foods. Friends with 1940s refrigerators don't have trouble with frozen foods, but friends with Monitor Tops tell me they've given up on frozen chicken and ice cream. Aside from the ozone layer damage, it was a good refrigerant. | ||
| Post# 658546 , Reply# 10 2/6/2013 at 18:40 (4,112 days old) by Travis () | ||
|
Monitor top evaporators were designed to freeze ice and possible some frozen deserts. Frozen foods weren't very common when they were built. The little misses was making frequent trips to the corner market anyway.
| ||
| Post# 658549 , Reply# 11 2/6/2013 at 18:47 (4,112 days old) by norgeway (mocksville n c ) | ||
|
Cocoanut Grove!!! Was the name of the nightclub!! Supposedly Metheline Chloride was used in the AC because of a wartime shortage and it was highly flammable!!In the Grunow it was called Carrene. | ||
| Post# 658609 , Reply# 12 2/6/2013 at 21:23 (4,112 days old) by athanasius80 (California) | ||
|
| ||
|
Post# 658690 , Reply# 13 2/7/2013 at 10:09 (4,111 days old) by kb0nes (Burnsville, MN) |
||
|
Methyl vs Methylene Chloride
Methyl Chloride (Chloromethane) is highly flammable and was the refrigerant in use at the site of the Cocoanut Grove fire.
Methylene Chloride (Dichloromethane) is considered to be non-flammable. Both are toxic and were phased out as refrigerants as the safer Dupont Freon products became available. Years ago I remember when we found John's 1926(?) Frigidaire refrigerator at an estate sale in D.C. While we were moving the unit outside, Jeff gave the compressor pulley a turn to see if it still turned freely and the shaft seal started leaking. We weren't sure what the refrigerant was but suspected it might be Sulfur Dioxide. With the leak we decided it wasn't prudent to load it into the van and drive home with all of us riding in the toxic cloud. It was left outside of the residence overnight and we loosened a high side fitting before running away. I don't remember if we flipped a coin but I remember being the one to break the fitting. The crazy thing is that when we went back the next day to retrieve the unit, the Ivy that was growing on the wall of the nearby brick garage had turned brown. I think we are glad we didn't ride home with it leaking in the van! | ||
| Post# 658717 , Reply# 14 2/7/2013 at 12:05 (4,111 days old) by PhilR (Quebec Canada) | ||
 | ||
|
Post# 658768 , Reply# 15 2/7/2013 at 16:10 (4,111 days old) by goatfarmer (South Bend, home of Champions) |
||
|
| ||
| Post# 658813 , Reply# 16 2/7/2013 at 19:57 (4,111 days old) by athanasius80 (California) | ||
|
| ||
|
Post# 658915 , Reply# 17 2/8/2013 at 09:59 (4,110 days old) by kb0nes (Burnsville, MN) |
||
|
What I would do to have a cylinder of SO2...
Call Airgas and give them some money, they still sell it. Its probably cheaper then R-12 at this point too.
I like the MSDS point "Use only with adequate ventilation"... CLICK HERE TO GO TO kb0nes's LINK | ||
| Forum Index: |
| Other Forums: |
|
|
|
|
|
Comes to the Rescue!
