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Mary Rose
Yes, I know there is that discussion, too. There is research going on about whether or not zero-point energy can be tapped.
But it's not the discussion about overunity.
It seems what we've established now is that the term "overunity" is not even in the dictionary. It redirects to "perpetual motion" and that's a separate argument altogether from devices that put out more than they cost to run.
I'm wondering about whether or not there are members who've done their own evaluation of the laws of thermodynamics and have similar ideas of their own about what might need revision in view of present-day knowledge.
boncho
It can't be. If it could, there would be another definition for it. As zero point energy is the lowest energy state of a system. -Not sure how many times everyone has to say this to you.
Mary Rose
It seems what we've established now is that the term "overunity" is not even in the dictionary. It redirects to "perpetual motion" and that's a separate argument altogether from devices that put out more than they cost to run.
The second law of thermodynamics has been violated on small scales but actually it's completely consistent with quantum theory.
Mary Rose
I'm wondering about whether or not there are members who've done their own evaluation of the laws of thermodynamics and have similar ideas of their own about what might need revision in view of present-day knowledge.
Mary Rose
Mary Rose
It seems what we've established now is that the term "overunity" is not even in the dictionary. It redirects to "perpetual motion" and that's a separate argument altogether from devices that put out more than they cost to run.
And we've established that heat pumps in temperate climates are energy superstars.
Mary Rose
boncho
It can't be. If it could, there would be another definition for it. As zero point energy is the lowest energy state of a system. -Not sure how many times everyone has to say this to you.
If my memory serves, Haisch uses the term zero-point energy. You know who he is, right?
Mary Rose
reply to post by Arbitrageur
So, you have no suggestions for revisions, I take it.
Are you familiar at all with the work of Prigogine?
Mary Rose
Are you familiar at all with the work of Prigogine?
Mary Rose
And do you agree that there is equilibrium and non-equilibrium thermodynamics?
open system
A physical system that interacts with other systems. The physical description of an open system can appear to violate conservation laws; for example, in a good description of the mechanism of energy transfer in a car engine (gears, driveshaft, and so on), energy will appear to be lost from the system over time, despite the law of conservation of energy. This is because the system is open, losing energy (in the form of heat) to surrounding systems (through friction). A system that loses energy in this way also called a dissipative system. Compare closed system.
The American Heritage® Science Dictionary Copyright © 2005 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Open system (thermodynamics), in thermodynamics and physics, a system where matter and energy can enter or leave, in contrast to a closed system where energy can enter or leave but matter can not
Mary Rose
The Wikipedia article "Thermodynamic system" says it needs additional citations for verification, but assuming for the time being that the article is accurate: For the particular scenario the NIST article is referring to, which thermodynamic system do the heat pumps in question fit in to?
Open, right?
Arbitrageur
I would use the terms along the same lines as the authors of this paper:
Open and closed-cycle mechanical vapour-compression heat-pump assisted sea-water purification systems
Using the sloppy definitions in the wiki, one might misconstrue both the open and closed system as open systems, but I think the authors of the paper use the terms correctly (or at least the way I would) to differentiate between open and closed systems.
Note NIST was just testing the heat pump, not a whole thermodynamic system, and the same heat pump could be used in either an open or closed system.
It's a press release to the public speaking in laymen terms, it's different than scientific language. We have been trying to drill this into your head for awhile now.
Media Contact: John Blair, [email protected], xxx-xxx-xxxx
What I would like to do now is focus on the big picture of the laws of thermodynamics and what possibly needs modification, not just heat pumps as a case-in-point.
But perhaps that's another thread.
The Wikipedia article "Thermodynamic system" says it needs additional citations for verification, but assuming for the time being that the article is accurate: For the particular scenario the NIST article is referring to, which thermodynamic system do the heat pumps in question fit in to?
It seems to me that well-established science for something as important as "thermodynamic system" would not have an article that needs citations.
Mary Rose
Isn't the increased efficiency due to the recovery of wasted energy a way to get back more than you put in without spending more money with increased electricity in?
In other words, the electricity/energy put in, does remain the same and that's the whole point. That's what you're trying to accomplish.
The first and an extremely important step in the study of thermodynamics is to choose and identify the system properly and show the system boundaries clearly.
A process is defined as the path of thermodynamic states which the system passes through as it goes from an initial state to a final state. In refrigeration and air conditioning one encounters a wide variety of processes. Understanding the nature of the process path is very important as heat and work depend on the path.
A system is said to have undergone a cycle if beginning with an initial state it goes through different processes and finally arrives at the initial state.
Thermodynamic systems:
Thermodynamic systems can be either closed, or open or isolated.
Closed systems: A closed system is defined when a particular quantity of matter is under study. A closed system always contains the same matter. There can be no mass transfers across the boundary. There may be energy transfer across the boundary.
Open systems. A closed system is defined when a fixed volume is under study. There can be mass transfers as well as energy transfers across the boundary.
Isolated systems: An isolated system is special type of closed system that does not even transfer energy across the boundary. There will be no interactions with the surroundings.
For example, the contents of a pressure cooker on a stove with its lid tightly closed and the whistle in position, is a closed system as no mass can enter or leave the pressure cooker, but heat can be transferred to it. When the whistle of the pressure cooker blows, then it becomes an open system as steam leaves the cooker. A perfectly insulated, rigid and closed vessel is an example of an isolated system as neither mass nor energy can enter or leave the system.
daskakik
Mary Rose
Isn't the increased efficiency due to the recovery of wasted energy a way to get back more than you put in without spending more money with increased electricity in?
No because it is still a part of what you put in.
In other words, the electricity/energy put in, does remain the same and that's the whole point. That's what you're trying to accomplish.
It still isn't overunity.
boncho
It can't be.
boncho
It's a press release to the public speaking in laymen terms, it's different than scientific language.
boncho
Heat pumps don't need modification. Your understanding of them does.
boncho
Money is not used in scientific calculations.
Closed systems: A closed system is defined when a particular quantity of matter is under study. A closed system always contains the same matter. There can be no mass transfers across the boundary.