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Arbitrageur
The more scientific way is to just use the specs for the aux heating coil for your calculations which probably are close, or if you want to be more precise, you can attach a special meter to your heat pump to calculate the energy inputs with and without the aux heat.
Mary Rose
Is the term "overunity" used?
Mary Rose
Arbitrageur
The more scientific way is to just use the specs for the aux heating coil for your calculations which probably are close, or if you want to be more precise, you can attach a special meter to your heat pump to calculate the energy inputs with and without the aux heat.
I'm trying to figure out what consumers need to know before they even buy a heat pump.
How should manufacturers of heat pumps be required to represent their data?
Scientists know how to break this stuff down in a meaningful way, correct?
Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services.
Energy efficiency and renewable energy are said to be the twin pillars of sustainable energy policy[4]
Mary Rose
Mary Rose
Is the term "overunity" used?
I used google to search their website and "overunity" brought up nothing but "efficiency" brought up pages and pages.
Is overunity reaching higher than efficiency, or do some people use the two terms interchangeably?
perpetual motion
n
1. Also called perpetual motion of the first kind motion of a hypothetical mechanism that continues indefinitely without any external source of energy. It is impossible in practice because of friction
2. Also called perpetual motion of the second kind motion of a hypothetical mechanism that derives its energy from a source at a lower temperature. It is impossible in practice because of the second law of thermodynamics
Lawgiver
. . . the air pumped out by heat pump is always less than 98.6 degrees f. even though a heat pump will circulate air to the median temp of 78-82 degrees as set by thermostat, the heated air from the vents will always feel cold against the skin.
Arbitrageur
ETA: I'd suggest reading the manual for your heat pump to see if it talks about the aux heat mode. Mine had a little light that came on when the aux heat was engaged. If yours has a light like mine did you can look at it when it gets cold to see if the light ever comes on or not.
Arbitrageur
For the umpteenth time, it's COP over 1, which is not overunity, because the additional heat comes from outside the heat pump.
Why are you obsessed with the word overunity? Isn't the COP over 1 good enough for you? We already acknowledged it's an energy "superstar" if conditions are favorable.
Boncho wrote a good answer.
Mary Rose
I'm trying to figure out what consumers need to know before they even buy a heat pump.
How should manufacturers of heat pumps be required to represent their data?
Scientists know how to break this stuff down in a meaningful way, correct?
Arbitrageur
So I don't think you can rely on manufacturers, distributors or their marketing.
So, now I see that even on the Performance curve, which is meaningful instead of COP, one still cannot refer to a heat pump as overunity
even when the heat pump is a “superstar,”
because mainstream science says it’s a perpetual motion machine, and they don’t exist.
That is absolute crap.
Eventually they will shut down the bigger fraudsters.
Mary Rose
Arbitrageur
So I don't think you can rely on manufacturers, distributors or their marketing.
We should be able to rely on the government to protect the consumer, but since the government is almost totally corrupt, we're out of luck there, as well.
Mary Rose
reply to post by DenyObfuscation
You haven't been following this thread, have you?
How about reading it?
Also, read the "The Atmos Clock: Perpetual Motion Machine" thread.
Mary Rose
So, where does overunity kick in on that curve?
Arbitrageur
For the umpteenth time, it's COP over 1, which is not overunity, because the additional heat comes from outside the heat pump. (Umpteenth means I lost count of how many times you've been told this).
Why are you obsessed with the word overunity? Isn't the COP over 1 good enough for you? We already acknowledged it's an energy "superstar" if conditions are favorable.
Mary Rose
I have to get the terms defined in a reliable way.
Arbitrageur
Isn't the COP over 1 good enough for you? We already acknowledged it's an energy "superstar" if conditions are favorable.
Mary Rose
Does the heat pump put out more usable power than it took to run the thing, or not?
Bedlam
No. A COP>1 does not imply an efficiency > 100%. . . . you can't interpret COP > 1 as overunity, because that's not what it's telling you.
If you had a perfect heat pump and a perfect heat engine, you would extract exactly the amount of energy out that you put in.
So, COP over 1 should be good enough to acknowledge that there is such a thing as a "superstar," but not to indicate efficiency.