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Old 12-01-11, 03:32 PM   #1022
AC_Hacker
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Quote:
Originally Posted by charlesfl View Post
Questions on R290.
Should the low side temperature be kept above the freezing point of water?
No, the loop water will not go to freezing temperatures as long as it is moving, AND the water temp in the loop is above, maybe 36 degrees (I shut mine off early, I didn't want to freeze my HX solid).

Quote:
Originally Posted by charlesfl View Post
How does this effect the efficiency of the system?
It makes it very efficient!

Quote:
Originally Posted by charlesfl View Post
I noticed randen and AC Hacker had very different low side pressures (temperatures).
When I reflected on it, my test pressures started out too high, and like I said, I had a long slow leak. I monitored the performance during the leak, which went on for a couple of months. And my best working pressures were also in the range reported by randen.

BTW, thanks for the propane resources.

-AC_Hacker
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Last edited by AC_Hacker; 12-01-11 at 05:10 PM..
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