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Groups > sci.physics > #691573
| From | % <persent@gmail.com> |
|---|---|
| Newsgroups | comp.os.linux.advocacy, sci.physics, alt.checkmate |
| Subject | Re: The first goal of ThermoDynamics. |
| Date | 2018-06-22 13:18 -0700 |
| Organization | Altopia Corp. - Usenet Access - www.altopia.com |
| Message-ID | <bcgb3a.snj.17.1@news.alt.net> (permalink) |
| References | (18 earlier) <1nqtc7o.1t2i7rodm2piaN%onion@anon.invalid> <bcg8qq.8m0.17.4@news.alt.net> <1nqtdtv.18wonwr7wjpwcN%onion@anon.invalid> <bcga47.8m0.17.19@news.alt.net> <1nqtet2.17by8ttk4fil9N%onion@anon.invalid> |
Cross-posted to 3 groups.
On 2018-06-22 1:15 PM, Mr On!on wrote:
> % <persent@gmail.com> wrote:
>
>> On 2018-06-22 12:55 PM, Mr On!on wrote:
>>> % <persent@gmail.com> wrote:
>>>
>>>> On 2018-06-22 12:24 PM, Mr On!on wrote:
>>>>> <Jeff-Relf.Me> wrote:
>>>>>
>>>>>> You (onion) replied ( to me ):
>>>>>>> I don't understand [...] eXergy.
>>>>>>
>>>>>> Google says:
>>>>>>
>>>>>
>>>>> Does not Google merely point one to pages that make
>>>>> otherwise unsupported assertions? i.e. that:-
>>>>>
>>>>>>
>>>>>> "Exergy" is the energy that is _available_ to be used. After the
>>>>>> system and surroundings reach equilibrium, the exergy is zero.
>>>>>> Determining exergy was the first goal of thermodynamics.
>>>>>>
>>>>>> "The heat death of the universe" is a plausible ultimate fate of
>>>>>> the universe in which the universe has diminished to a state of
>>>>>> "no thermodynamic free energy" ["no eXergy"] and, therefore, can
>>>>>> no longer sustain processes that increase entropy.
>>>>>>
>>>>>> At the start, there was "no entropy" ("no time, no space"), just
>>>>>> "eXergy" ( a type of energy that can do physical work, force *
>>>>>> distance ).
>>>>>>
>>>>>> Eventually, this eXergy will be consumed away, replaced with entropy,
>>>>>> leaving us with a uniform heat bath that has all of the energy but
>>>>>> none of the eXergy. Gravity is residual eXergy.
>>>>>>
>>>>>> Everything decays, even gravity; hence the arrow of time.
>>>>>>
>>>>>> Einstein's Cosmological Constant ( 1.11 * 10^?52 / Meters^2 ) tells
>>>>>> us that outer space is growing EXPONENTIALLY, gravity is dying off;
>>>>>> -- i.e. the "Heat Death" predicted by Lord Kelvin, 1852, is the most
>>>>>> likley outcome.
>>>>>>
>>>>>
>>>>> That does not enhance my understanding of "exergy"; maybe
>>>>> I'm just not intelligent enough for such an abstruse concept.
>>>>> Can you please explain it more clearly, in layman's terms?
>>>>>
>>>> In thermodynamics, the exergy of a system is the maximum useful work
>>>> possible during a process that brings the system into equilibrium with
>>>> a heat reservoir. When the surroundings are the reservoir, exergy is
>>>> the potential of a system to cause a change as it achieves equilibrium
>>>> with its environment. Exergy is the energy that is available to be
>>>> used. After the system and surroundings reach equilibrium, the exergy
>>>> is zero. Determining exergy was also the first goal of thermodynamics.
>>>> The term "exergy" was coined in 1956 by Zoran Rant by using the Greek
>>>> ex and ergon meaning "from work", but the concept was developed by J.
>>>> Willard Gibbs in 1873.
>>>>
>>>
>>> OK, I think I've got that, thank you.
>>>
>>> Q:
>>> Is a system that is colder than its heat reservoir more
>>> or less energetic than one that is hotter than its ditto?
>>> How does that energy (exergy?) arise?
>>>
>>
>> you best have a look at google ,
>> there's lots of info there and ,
>> they all agree on what it is ,
>> here you'll get 100's of alternative answers
>>
>
> I'm not sure that I trust Google answers. I'd like to get
> <Jeff-Relf.Me>'s take on the question, he seems to know lots
> about this sort of stuff.
>
you're welcome , glad i could help
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Does this sound familiar ? Jeff-Relf.Me @. - 2018-06-19 04:48 -0700
Re: Does this sound familiar ? Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 09:19 -0500
Karl Marx lived it. Jeff-Relf.Me @. - 2018-06-19 08:08 -0700
Re: Karl Marx lived it. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 10:23 -0500
Marx lied. Jeff-Relf.Me @. - 2018-06-19 08:53 -0700
Re: Marx lied. Snit <usenet@gallopinginsanity.com> - 2018-06-19 08:59 -0700
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 11:04 -0500
Re: Marx lied. Snit <usenet@gallopinginsanity.com> - 2018-06-19 09:11 -0700
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 11:24 -0500
Re: Marx lied. chrisv <chrisv@nospam.invalid> - 2018-06-19 11:55 -0500
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 17:06 -0400
Re: Marx lied. chrisv <chrisv@nospam.invalid> - 2018-06-20 07:50 -0500
Re: Marx lied. vallor <vallor@cultnix.org> - 2018-06-21 03:11 +0000
Somali pirates tax ships, as (para)governments do. Jeff-Relf.Me @. - 2018-06-21 11:36 -0700
Re: Somali pirates tax ships, as (para)governments do. benj <benj@nobody.net> - 2018-06-21 17:33 -0400
It's my fault. Jeff-Relf.Me @. - 2018-06-21 15:20 -0700
Re: It's my fault. onion@anon.invalid (Mr On!on) - 2018-06-21 23:29 +0100
Everything decays, even gravity; hence the arrow of time. Jeff-Relf.Me @. - 2018-06-21 16:05 -0700
Re: Everything decays, even gravity; hence the arrow of time. onion@anon.invalid (Mr On!on) - 2018-06-22 00:25 +0100
The first goal of ThermoDynamics. Jeff-Relf.Me @. - 2018-06-21 22:34 -0700
Re: The first goal of ThermoDynamics. moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-06-22 13:50 +0000
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 20:24 +0100
Re: The first goal of ThermoDynamics. % <persent@gmail.com> - 2018-06-22 12:39 -0700
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 20:55 +0100
Re: The first goal of ThermoDynamics. % <persent@gmail.com> - 2018-06-22 13:01 -0700
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 21:15 +0100
Re: The first goal of ThermoDynamics. % <persent@gmail.com> - 2018-06-22 13:18 -0700
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 21:31 +0100
Re: The first goal of ThermoDynamics. vallor <vallor@cultnix.org> - 2018-06-22 22:13 +0000
Re: The first goal of ThermoDynamics. Checkmate <ricksabian1@gmail.com> - 2018-06-22 15:25 -0700
Re: The first goal of ThermoDynamics. vallor <vallor@cultnix.org> - 2018-06-22 22:30 +0000
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 23:38 +0100
Re: The first goal of ThermoDynamics. benj <benj@nobody.net> - 2018-06-22 21:01 -0400
Re: The first goal of ThermoDynamics. onion@anon.invalid (Mr On!on) - 2018-06-22 23:33 +0100
Re: The first goal of ThermoDynamics. benj <benj@nobody.net> - 2018-06-22 20:59 -0400
Re: It's my fault. benj <benj@nobody.net> - 2018-06-21 21:24 -0400
Re: It's my fault. benj <benj@nobody.net> - 2018-06-21 21:23 -0400
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 16:54 -0400
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 16:04 -0500
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 18:31 -0400
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 19:13 -0500
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 16:52 -0400
Marxism didn't work for Marx himself, nor anyone else. Jeff-Relf.Me @. - 2018-06-19 17:36 -0700
Re: Marxism didn't work for Marx himself, nor anyone else. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 20:07 -0500
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 16:46 -0400
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 16:03 -0500
SuperDeterminism is a better religion. Jeff-Relf.Me @. - 2018-06-19 18:14 -0700
Re: SuperDeterminism is a better religion. vallor <vallor@cultnix.org> - 2018-06-20 03:21 +0000
Does "Bell's Inequality" require perfect knowledge ? Jeff-Relf.Me @. - 2018-06-19 23:35 -0700
Re: Does "Bell's Inequality" require perfect knowledge ? benj <benj@nobody.net> - 2018-06-20 12:17 -0400
Re: Does "Bell's Inequality" require perfect knowledge ? Steve Carroll <frelwizzen@gmail.com> - 2018-06-20 21:13 -0700
Re: SuperDeterminism is a better religion. benj <benj@nobody.net> - 2018-06-20 12:14 -0400
Re: Marx lied. Snit <usenet@gallopinginsanity.com> - 2018-06-19 14:15 -0700
Re: Marx lied. benj <benj@nobody.net> - 2018-06-19 18:17 -0400
Re: Marx lied. Snit <usenet@gallopinginsanity.com> - 2018-06-19 15:29 -0700
Re: Marx lied. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 11:00 -0500
Not one of Karl Marx's 8 kids did well. Jeff-Relf.Me @. - 2018-06-19 17:28 -0700
Re: Not one of Karl Marx's 8 kids did well. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 19:34 -0500
When sane, you prefer the LeastBad "option", not perfection. Jeff-Relf.Me @. - 2018-06-20 01:40 -0700
Re: When sane, you prefer the LeastBad "option", not perfection. Steve Carroll <frelwizzen@gmail.com> - 2018-06-20 01:48 -0700
Re: Karl Marx lived it. benj <benj@nobody.net> - 2018-06-19 11:58 -0400
Re: Karl Marx lived it. Your Friendly Neighbourhood Puppy Whistle Holder Emeritus 🐶笛 <root@127.0.0.1> - 2018-06-19 11:09 -0500
Re: Does this sound familiar ? benj <benj@nobody.net> - 2018-06-19 11:26 -0400
Re: Does this sound familiar ? Double-A <double-a3@hush.com> - 2018-06-19 14:12 -0700
"Marxism" is a euphemism for "Feudalism". Jeff-Relf.Me @. - 2018-06-19 18:24 -0700
Re: "Marxism" is a euphemism for "Feudalism". Steve Carroll <frelwizzen@gmail.com> - 2018-06-20 01:32 -0700
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