General > Beating a dead horse
Questions about Arctic Spas
spaman--:
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:D Water boils at 212F (a little less in Denver because of the altitude). To paraphrase the witches in Macbeth: "Double, double toil and trouble, hot tub boil and potion bubble..."
The Alberta Research Council's Thermal Performance Test of Spas http://www.arcticspas.com/downloads/performance/Thermal%20Performance%20Test%20of%20Spas.pdf included data on equipment enclosure temperatures (Fig. 2 p. 4). For an average ambient temperature of 19C and a constant water temperature of 40C, the EETs ranged from about 23C to about 42C (all spas). In other words, after a continuous run of 96 hours, at no time did the equipment temperature of any spa exceed 110F.
Certainly at higher ambient temperatures the EET will rise, which is why we offer some warm-weather solutions.
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19c is 66.2f we are talking about 100f to 105f ambient, also the test you describe only has the water temp @73f water is a natural coolant.
In regards to the summer kit you offer, that was my whole point, the customer need to ask about that before the sale, this way they know they have extra costs to incur.
A real test would be with the westerly sun bearing down on the cabinet @ 8000 ft. elevation for an entire afternoon @102f. With water temp @102f.
Let me know how that goes. ;)
In the winter when temps drop below freezing, in order for your theory of insulation to operate properly, the cabinet temp has to maintain above the temp of the water in the tub. Is this what happens 24/7?
Tom:
--- Quote ---19c is 66.2f we are talking about 100f to 105f ambient, try that for 96 hours.
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Yow, that IS hot. I hope it cools down at night?
spaman--:
--- Quote ---Yow, that IS hot. I hope it cools down at night?
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I threw that out there because it is as rediculous as the test you are showing at temps. of 66.2F.
Tom:
--- Quote ---I threw that out there because it is as rediculous as the test you are showing at temps. of 63F.
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I am not "throwing things out there"; I am reporting facts. Can't see why you'd say it is ridiculous. Doesn't the CEC test run at an ambient of 68F or so?
We did another series of tests at -12C (10F). To us, testing at those temperatures makes a great deal of sense, as they represent typical temperatures in our market area. According to the National Climatic Data Center website, the mean annual ambient in the US is around 55F (13C) while that for Canada is 7C (45F). The ARC testing seems well in within range for both countries.
spaman--:
--- Quote ---I am not "throwing things out there"; I am reporting facts. Can't see why you'd say it is ridiculous. Doesn't the CEC test run at an ambient of 68F or so?
We did another series of tests at -12C (10F). To us, testing at those temperatures makes a great deal of sense, as they represent typical temperatures in our market area. According to the National Climatic Data Center website, the mean annual ambient in the US is around 55F (13C) while that for Canada is 7C (45F). The ARC testing seems well in within range for both countries.
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Funny how you are showing tests based on national averages, since the tub is sold primarily touting its performance in climates that range from 105F and down to -30F, I would find it fitting to test in the extremes that the sales pitch presents. Once more if the temperature inside the cabinet drops below that of the water in the tub, the insulation is broken and the tub is losing temp.One more time, if the tub water is 104 and the cabinet temp drops to 100, the temp of the tub is going to reduce. Your test also shows a water temp of the 70's F, This is easy in any spa! The higher you set the temp of the water in an Arctic the harder it would seem to heat the tub without losing heat.
Since I live in a climate above 8000ft elevation, sometimes weeks go by and we do not see o Degrees F, what will the temp of the inside of that cabinet be?
In the summer when the sun hits and it is 103 outside and the sun is beating down, what will the inside of that cabinet be?
I do agree with the fact that in a power outage the equipment area is protected longer.
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