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Post by elec573 on Oct 14, 2017 3:53:57 GMT
Great work it's looking promising.
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Post by birkie on Oct 14, 2017 4:49:41 GMT
Timed it a few days latter and cycles were back to normal. Killawatt sill says it is using 10 cents a day. That's good, right?  |
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Post by ckfan on Oct 14, 2017 12:20:33 GMT
Yay! A dime a day is pretty cheap. What is your rate per kwh? Ours is $.11 and my 37 Westinghouse is currently on the meter. It only uses $.06 per day!
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Post by birkie on Oct 14, 2017 20:11:31 GMT
Yay! A dime a day is pretty cheap. What is your rate per kwh? Ours is $.11 and my 37 Westinghouse is currently on the meter. It only uses $.06 per day! That's about 23W. Just out of curiosity, what are the ambient and cabinet temps? |
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Post by ckfan on Oct 14, 2017 21:34:02 GMT
The ambient temp is approx 78-70. The cabinet temp I'm not sure of. I'll have to put a better thermometer in it. The one it comes with that's attached to the shelf is saying its below freezing and there is no way that's true. It's on setting 5 which is actually the next to the warmest setting. Westys are weird.
Does the 23W mean that on average it is using 23 watts? The thing is stuffed with liquor beer and soda at the moment.
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Post by birkie on Oct 15, 2017 0:32:33 GMT
Does the 23W mean that on average it is using 23 watts? The thing is stuffed with liquor beer and soda at the moment. Yup! Interestingly, my models predict that our 1940 flat top would draw 24W average at 32F cabinet temp, 70 ambient. The '35 CK would draw almost 29W under those conditions. In ckfan dollars, that is about 7.6ยข per day. |
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Post by ckfan on Oct 15, 2017 1:31:03 GMT
CKfan dollars don't go very far...
Those are some interesting calculations though.
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Post by blackhorse on Oct 15, 2017 3:41:06 GMT
CKfan dollars don't go very far... Maybe not, but do you get to print them yourself?  |
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Post by ckfan on Oct 15, 2017 17:05:17 GMT
CKfan dollars don't go very far... Maybe not, but do you get to print them yourself? Unfortunately not. I think that would land me some jail time. |
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Post by blackhorse on Oct 15, 2017 17:41:22 GMT
Maybe not, but do you get to print them yourself? Unfortunately not. I think that would land me some jail time. As previously pointed out, we tend to not get in trouble for what we do if no one finds out....... |
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Post by blackhorse on Oct 17, 2017 11:55:31 GMT
The dielectric strength refers to a resistance to breakdown (a spark). In our machines, that could translate into arcing within the windings, or between the rotor and stator (in the case of old DRs with copper rotors). I'm on the road and not in a position to find a proper reference, but there's a table at the end of this patent. Higher numbers mean higher dielectric strength. The numbers are how much voltage you need to apply across a .1" gap in order to get a spark. | Gas | Dielectric Strength (kV/.1" gap) | | SO2 | 1.43 | | Air | 4.75 | | R152a | 5.9 | | R132a | 6.6 | | R22 | 7.2 | | R124 | 10.4 | | SF6 | 14.0 | | R114 | 17.0 |
I added a value for SO2 based on the fact that it's weaker (.3) than air according to wikipediaSF6 is a standard laboratory dielectric gas, since it is inert and has high dielectric strength. R114 beats it, apparently. Of note to us is that R124 also has a really high dielectric strength. The benefits over SO2 keep coming! |
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Post by coldspaces on Nov 25, 2017 14:19:53 GMT
I have been busy and not tracking the power use of the Ginny pigs. They have however all three still been running. (I only rested them about a week several months ago) They have been doing great still. Coldest the garage has gotten so far is 50F. They just keep purring away with no unusual sounds so far.
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Post by blackhorse on Nov 25, 2017 21:00:26 GMT
Good going!
Standing the test of time is one of the most important considerations.
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Post by birkie on Nov 26, 2017 13:47:12 GMT
I have been busy and not tracking the power use of the Ginny pigs. They have however all three still been running. (I only rested them about a week several months ago) They have been doing great still. Coldest the garage has gotten so far is 50F. They just keep purring away with no unusual sounds so far. Nice! Colder ambients are also quite interesting. In the R152a thread, R152a seemed to be very eager to condense in the dome, and it had some trouble starting up in low ambient temperatures. |
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Post by ckfan on Nov 26, 2017 20:52:29 GMT
Excellent. Very promising to hear.
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