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Forum: Geothermal & Heat Pumps 08-16-16, 10:00 PM
Replies: 282
Views: 206,970
Posted By randallkc
cap tube systems

I have four R22 cap systems from the late 80's The performance on those was awful. The super heat and sub cooling was awful. I could not get to beer can cold without over charging and even then it...
Forum: Geothermal & Heat Pumps 08-15-16, 09:47 PM
Replies: 282
Views: 206,970
Posted By randallkc
Propane

The biggest thing with R290 is the orifice difference. You can use a TXV built for R22 if you adjust it. That is what I do.

I tried to put in R290 to a capillary system without resizing the...
Forum: Geothermal & Heat Pumps 08-15-16, 08:33 PM
Replies: 32
Views: 25,202
Posted By randallkc
R290

Even though the thermal characteristics are very similar and r290 can serve as a replacement for r22 there is one big consideration that has to be accounted for. The orifice requirements of r290 are...
Forum: Geothermal & Heat Pumps 08-15-16, 08:22 PM
Replies: 32
Views: 25,202
Posted By randallkc
I have used R290 on r22 capillary systems. It...

I have used R290 on r22 capillary systems. It does not work well at all. Sub cooling is awful. The tubes are not correct for the fluidity of r290. They need to be about twice as long to work...
Forum: Geothermal & Heat Pumps 07-28-16, 02:15 PM
Replies: 282
Views: 206,970
Posted By randallkc
Well if your afraid of blowing yourself up you...

Well if your afraid of blowing yourself up you had better not use any R22 replacements. :)
410a high pressure. R290 600 much better refrigerants
Forum: Geothermal & Heat Pumps 07-28-16, 10:19 AM
Replies: 282
Views: 206,970
Posted By randallkc
About 10 years ago I was in Belize working on my...

About 10 years ago I was in Belize working on my drinking problem on a small island "Caye Caulker" and I saw this guy charging a AC system with a BBQ gas propane of bottle. I asked him... Your...
Showing results 1 to 6 of 6

 
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