Re: [Vo]:Fire From Ice: An engineering challenge

[Gibson Elliot]

 So you want to build a demon. That proverbial creature that can sort hot and 
cold bits. New research has created a wonderful Graphene energy harvester you 
might be interested in. I guess you could attempt to use minor spatial 
perturbations an use that. but for any real energy, ya just can't get past mass 
and acceleration without some serious joules. Did you know when Nitinol is bent 
it creates molecular heat in super elastic mode, and it goes through a similar 
cooling when it relaxes? food for thought my friend about energy differentials 
and thermal effects on an atomic scale. Always seems to come back to 
compression/relaxation phases don't it?
G 
On Tuesday, November 3, 2020, 01:04:59 PM PST, H LV  
wrote:  
 
 
This challenge is inspired by the title of Gene Mallove`s book "Fire From Ice".
A major engineering goal in the past was to make ice from fire. That is given a 
very hot reservoir and ambient temperature, build a machine which will cause 
water to freeze. 
Can a complementary machine be built which will cause water to boil given a 
very cold reservoir and the ambient temperature? Has this already been done?
Harry  

Re: [Vo]:Fire From Ice: An engineering challenge

[H LV]

The propane fridge would be consistent with a prequel book entitled: Ice
from Fire.
In your example the propane supplies the fire or high temperature reservoir.

An engine requires a temperature _difference_ between a reservoir and the
ambient environment. Typically we think of an engine as needing a reservoir
which is at higher temperature than the ambient environment. However, it is
possible for the ambient environment  to be at  a higher temperature than
the reservoir.

For example the ambient temperature could be at 5 degrees below the
freezing point of water and the reservoir temperature at 105 degrees below
the freezing point. One way to melt ice under this circumstance would be to
use a thermoelectric device. The temperature difference would create a
voltage potential and this could be used to generate electricity to produce
joule heating which would melt the ice.  This would qualify as Fire from
Ice.

The point of this exercise is to suggest that there may be useful
reservoirs of intense cold in places that we don't ordinarily consider to
be cold because they are behind an insulating barrier.



Harry



On Tue, Nov 3, 2020 at 5:56 PM JonesBeene  wrote:

> Make that “propane fridge” … Einstein’s first patent IIRC
>
>
>
>
>
> This challenge is inspired by the title of Gene Mallove`s book "Fire From
> Ice"….Has this already been done?
>
>
>
>
>
> Yes. At least in the sense of a propane fringe,
>
>
>

RE: [Vo]:Fire From Ice: An engineering challenge

[JonesBeene]

Make that “propane fridge” … Einstein’s first patent IIRC



This challenge is inspired by the title of Gene Mallove`s book "Fire From 
Ice"….Has this already been done?


Yes. At least in the sense of a propane fringe, 

RE: [Vo]:Fire From Ice: An engineering challenge

[JonesBeene]

This challenge is inspired by the title of Gene Mallove`s book "Fire From 
Ice"….Has this already been done?


Yes. At least in the sense of a propane fringe, 

Re: [Vo]:Fire From Ice: An engineering challenge

[H LV]

The challenge should be more symmetrical then I just described. Rather than
boil water, the challenge should be to melt ice with a very cold reservoir
where the ambient  temperature is low enough such that the normal state of
water is ice.

Harry


On Tue., Nov. 3, 2020, 4:04 p.m. H LV,  wrote:

>
> This challenge is inspired by the title of Gene Mallove`s book "Fire From
> Ice".
>
> A major engineering goal in the past was to make ice from fire. That is
> given a very hot reservoir and ambient temperature, build a machine which
> will cause water to freeze.
>
> Can a complementary machine be built which will cause water to boil given
> a very cold reservoir and the ambient temperature? Has this already been
> done?
>
> Harry
>

Re: [Vo]:acoustic prism

[H LV]

Good point.
Harry


On Tue., Nov. 3, 2020, 3:52 p.m. Michael Foster,  wrote:

> Clever and interesting... But this device is not an acoustic analog of an
> optical prism. It's much closer to an acoustic diffraction device.
>
>
>
>
>
>
>
>
>  On Sunday, November 1, 2020, 06:13:08 PM UTC, H LV 
> wrote:
>
>
>
>
>
>  Engineers Debut the Acoustic Prism
> The device splits sounds without digital help
>
> https://www.scientificamerican.com/article/engineers-debut-the-acoustic-prism/
> Acoustic Prism Invented at EPFL
> https://www.youtube.com/watch?v=6sSBPxAv2qk
> Exploiting the leaky-wave properties of transmission-line metamaterials
> for single-microphone direction findinghttps://
> asa.scitation.org/doi/full/10.1121/1.4949544
>
> Harry
>
>

[Vo]:Fire From Ice: An engineering challenge

[H LV]

This challenge is inspired by the title of Gene Mallove`s book "Fire From
Ice".

A major engineering goal in the past was to make ice from fire. That is
given a very hot reservoir and ambient temperature, build a machine which
will cause water to freeze.

Can a complementary machine be built which will cause water to boil given a
very cold reservoir and the ambient temperature? Has this already been done?

Harry

Re: [Vo]:acoustic prism

[Michael Foster]

Clever and interesting... But this device is not an acoustic analog of an 
optical prism. It's much closer to an acoustic diffraction device.








 On Sunday, November 1, 2020, 06:13:08 PM UTC, H LV  
wrote:





 Engineers Debut the Acoustic Prism
The device splits sounds without digital help
https://www.scientificamerican.com/article/engineers-debut-the-acoustic-prism/
Acoustic Prism Invented at EPFL
https://www.youtube.com/watch?v=6sSBPxAv2qk
Exploiting the leaky-wave properties of transmission-line metamaterials for 
single-microphone direction 
findinghttps://asa.scitation.org/doi/full/10.1121/1.4949544

Harry

Re: [Vo]:SPIN-LATTICE COUPLING

[Nigel Dyer]

It strikes me that this is essentially the mechanism that Neal Graneau 
proposed to be responsible for the arc-liberated emission of energy in 
papers such as


https://www.academia.edu/download/38880867/Graneau-e-a-Arc-liberated-chemical-energy-exceeds-electrical-input-energy-2000.pdf

However, I dont beleive there is a phase change in the water that could 
be associated with such an energy release., which is one of the reasons 
why I dont think Neal's hypothesis holds water,


Nigel

On 13/07/2019 17:14, H LV wrote:
The wikipedia page does not mention the complementary phenomena of 
decalescence.



Definition of /decalescence/

: the decrease in temperature when the rate of heat absorption during 
transformation exceeds the rate of heat input while heating metal 
through a transformation range


On Sat., Jul. 13, 2019, 11:14 a.m. bobcook39...@hotmail.com 
, > wrote:


*Recalescence* is an increase in temperature
 that occurs while
cooling metal  when a change
in structure with an increase in entropy
 occurs. The heat
 responsible for the change in
temperature is due to the change in entropy. When a structure
transformation occurs the Gibbs free energy
 of both
structures are more or less the same. Therefore the process will
be exothermic . The heat
provided is the latent heat
.

This concept described in Wikipedia seems like LENR to me.  It
involves the 2^nd law regarding an increase of entropy in a
coupled system as a result of as a result of a decrease of
potential energy and an increase of kinetic energy.

If the Sandia incident occurred during cooling while magnetization
was ongoing, this alone would deserved a paper IMHO.

However, Gibbs did not consider free energy associated with
nuclear structures as being important in his theory.

Note the BS associated with a constant Gibbs free energy (more or
less the same) in 2 different phases associated with

*Recalescence* .

Bob Cook