4 ms·
But what is the effeciency of such a system?
by anthropodie 4y ago
But what is the effeciency of such a system?
- gabcoh 4y agoIn the first minute of the video they claim “98% storage efficiency.” Not sure exactly what that means though.
- ajb 4y agoThis page gives 1% loss per day: https://rondo.com/how-it-works https://rondo.com/how-it-works But clearly that's energy in -> steam out, not including any losses from converting from steam back to electricity for example. Although clearly they are targetting first processes that require steam as an input.
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- bergenty 4y agoApparently electric heating is 100% efficient from some basic googling. I had no idea this was the case. So maybe the 98% efficiency is not totally bullshit.
- bibanez 4y agoNo machine has perfect efficiency
- laurencerowe 4y agoThe losses are heat. Resistive heating is 100% efficient. Use a heat pump though and you can get to 300%-400% efficiency because you are using the energy to move heat from one place to another instead of turning it into heat.
- bergenty 4y agoYou’ve got to expound on this a little more because 300-400% efficiency doesn’t make sense.
- Orochikaku 4y agoThe comment you're replying to probably meant to say it has a coefficient of performance [1, 2] of 3-4. [1] https://en.wikipedia.org/wiki/Coefficient_of_performance https://en.wikipedia.org/wiki/Coefficient_of_performance [2] https://en.wikipedia.org/wiki/Heat_pump#Performance https://en.wikipedia.org/wiki/Heat_pump#Performance
- Schroedingersat 4y agoReferring to COP as efficiency is an intentionally misleading practise pushed by the heat pump industry that makes communication worse for everyone forever if we accept it and doesn't really help anyone. Refer to it as COP or as moving 3 units of heat for one unit of input.
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- Schroedingersat 4y agoHeat goes in. Heat goes out. It's already thermalized. You can't kill what is already dead. The right question is how much heat escapes? This will depend on time, and they seem to be claiming 12 hours effectiveness which would seem to imply half of the heat escapes at max storage somewhere between 3 and 24 hours.
- adammarples 4y agoNo, the right question is "what is the efficiency of the system". It already entirely encapsulates the lesser question of how much heat escapes.
- Schroedingersat 4y agoThat question has no defined answer. It's like asking 'how many cups of water should I drink'. Or 'how much deisel does my bicycle use'. It depends on both time and how full it is. Possibly also how full it has recently been as well in the case where it is filled unevenly to reduce loss. Without anything more specific than '1% loss a day' from their marketing copy, it's difficult to say, but probably "about 90% in typical use" if you want to be even more reductive than that rather than encouraging clear communication.