RE: [Texascavers] Refrigeration over fire?

[Fritz Holt]

VIVA SERVELL!

-Original Message-
From: Gill Ediger [mailto:gi...@worldnet.att.net]
Sent: Wednesday, December 10, 2008 4:29 PM
To: texascavers@texascavers.com
Subject: [Texascavers] Refrigeration over fire?

At 03:45 PM 12/10/2008, Matt Turner wrote:
>I'm really curious on how this works. I keep thinking  it's April 1st.

You'd do well, Matt, to just keep on considering every day to be
April Fools Day. There's a whole herd of folks out there who'd have
you believe all sorts of hocus pocus. Natural science, however, will
provide the answer and the solution to the problem.

Gas refrigerators have been around for a long time. We had one that
used natural gas in our rent house when I was a kid. I have one in my
shed now; it came out of a travel trailer and used propane.

The principle of refrigeration (except on days like today when you
just leave the door open) is that when a gas under high pressure
escapes through a nozzle to a lower pressure it cools down in the
process. Your home refrigerator uses an electric compressor to
mechanically compress the gas (used to be freon, now is something
else). The gas refrigerator uses a small flame (about the size of a
candle flame) to heat its gas (traditionally ammonia because it has a
lower boiling point, but now could be some other high tech gas ???).
In both systems the gas is expelled through a fine orifice into the
cooling coils located within the freezer compartment. As the gas
expands it cools down considerably--sufficient to freeze water.

The thermos-sized thingy shown suspended over the camp fire is
probably some variation on that same gas refrigeration theme. There
is likely a gas filled cylinder in the bottom that is heated by the
fire and that HP gas is forced through a nozzle into the LP coils
surrounding the upper chamber--or a probe or something similar.

A few years ago there were several (European?) beer companies that
had cans which would cool a warm beer in a few seconds whenever the
top was popped and the pressure released. They had a captive,
pre-pressurized cylinder with a valve of some sort that was triggered
when the initial pressure in the can was reduced. Or something along
those lines.

Ain't science grand?
--Ediger


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[Texascavers] Refrigeration over fire?

[Gill Ediger]

At 03:45 PM 12/10/2008, Matt Turner wrote:

I'm really curious on how this works. I keep thinking  it's April 1st.


You'd do well, Matt, to just keep on considering every day to be 
April Fools Day. There's a whole herd of folks out there who'd have 
you believe all sorts of hocus pocus. Natural science, however, will 
provide the answer and the solution to the problem.


Gas refrigerators have been around for a long time. We had one that 
used natural gas in our rent house when I was a kid. I have one in my 
shed now; it came out of a travel trailer and used propane.


The principle of refrigeration (except on days like today when you 
just leave the door open) is that when a gas under high pressure 
escapes through a nozzle to a lower pressure it cools down in the 
process. Your home refrigerator uses an electric compressor to 
mechanically compress the gas (used to be freon, now is something 
else). The gas refrigerator uses a small flame (about the size of a 
candle flame) to heat its gas (traditionally ammonia because it has a 
lower boiling point, but now could be some other high tech gas ???). 
In both systems the gas is expelled through a fine orifice into the 
cooling coils located within the freezer compartment. As the gas 
expands it cools down considerably--sufficient to freeze water.


The thermos-sized thingy shown suspended over the camp fire is 
probably some variation on that same gas refrigeration theme. There 
is likely a gas filled cylinder in the bottom that is heated by the 
fire and that HP gas is forced through a nozzle into the LP coils 
surrounding the upper chamber--or a probe or something similar.


A few years ago there were several (European?) beer companies that 
had cans which would cool a warm beer in a few seconds whenever the 
top was popped and the pressure released. They had a captive, 
pre-pressurized cylinder with a valve of some sort that was triggered 
when the initial pressure in the can was reduced. Or something along 
those lines.


Ain't science grand?
--Ediger


-
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To unsubscribe, e-mail: texascavers-unsubscr...@texascavers.com
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[ot_caving] Re: [Texascavers] Refrigeration over Fire

[Don Cooper]

It reminds me of a natural gas powered refrigerator my grandfather had in
his welding shop.
It looked just like any other refrigerator, but the energy that ran the
thing came from a little gas burner in the back of it.

-Don C

On Wed, Dec 10, 2008 at 4:06 PM, Andy Zenker  wrote:

> But most likely likely it's what someone else said - the Einstein
> refrigerator, a single-pressure absorption refrigerator.
>
> http://en.wikipedia.org/wiki/Einstein_refrigerator
>
> Just like anything else, energy is required to run it.  Heat is energy so
> it makes sense.
>
>
> ROCKHUGGER
> Andy Zenker
> Texas Caver
>
>
>
>

[Texascavers] Refrigeration over Fire

[Andy Zenker]

But most likely likely it's what someone else said - the Einstein refrigerator, 
a single-pressure absorption refrigerator.

http://en.wikipedia.org/wiki/Einstein_refrigerator

Just like anything else, energy is required to run it.  Heat is energy so it 
makes sense.


ROCKHUGGER
 Andy Zenker
Texas Caver





  

[ot_caving] Fwd: [Texascavers] Refrigeration over fire?

[Don Cooper]

I think it works like a Reverse ETF, which is a stock that goes up in price
when the price of stocks is covers goes down!  *(And Vica (of course) Versa)
*
http://en.wikipedia.org/wiki/Inverse_etf

*-WaV*

2008/12/10 Matt Turner 

 http://gizmodo.com/5105820/zero-electricity-fridge-freezes-with-fire
>
> I'm really curious on how this works. I keep thinking  it's April 1st.
>
> Matt Turner
>
>
> "It is the mark of an educated mind to be able to entertain a thought
> without accepting it." - Aristotle
>
>
> "Empty pockets never held anyone back.Only empty heads and empty hearts can
> do that."- Norman Vincent Peale
>
>  --
> *From:* Jon Cradit 
> *To:* Mary Thiesse ; texascavers@texascavers.com
> *Sent:* Wednesday, December 10, 2008 3:42:55 PM
> *Subject:* RE: [Texascavers] Fw: [greater_houston_grotto] Harry Walker
>
>  I remember when I first started caving and listening to stories told by
> Harry and Charles and wishing some day to grow up to have stories like
> theirs.
>
> Please pass along my deepest condolences to Harry's family and the awe
> which I held him in.
>
>
>
> Jon Cradit
>
>
>
>
>
>
>
> *From:* Mary Thiesse [mailto:wpipistre...@yahoo.com]
> *Sent:* Wednesday, December 10, 2008 3:26 PM
> *To:* texascavers@texascavers.com
> *Subject:* [Texascavers] Fw: [greater_houston_grotto] Harry Walker
>
>
>
> I believe there are a number of other texas cavers that would like to know
> this as well.
>
> Mary TZ
>
>
>
> - Forwarded Message 
> *From:* Kevin McGowan 
> *To:* greater_houston_gro...@yahoogroups.com
> *Cc:* mcon...@swbell.net; cfro...@yahoo.com
> *Sent:* Wednesday, December 10, 2008 10:22:09 AM
> *Subject:* [greater_houston_grotto] Harry Walker
>
>
>   Hello,
>
> Those of us in GHG that have been around a while remember Harry Walker. I'm
> sorry to say that Harry passed away suddenly, yesterday after a long battle
> with Alzheimer.
>
> David Locklear informed me that there will be a service for Harry at the
> Crowder Funeral Home in Dickenson TX at 2pm this Saturday.
>
> Crowder Funeral Home 851 Hwy. 517 @ 646 Dickinson, TX 77539. Phone:(281)
> 337-1515.
>
> I called to confirm this. This is a link to their site:
> http://www.crowderf uneralhome. com/default. 
> htm
>
> Harry hiked many of the 14ers and had always been and avid outdoorsman. He
> went with us into Honey Creek to look around when he was 80 years old. He
> was also one of the founding members of GHG.
>
> His wife, Dorothy survives him. Many of us remember the parties at Harry
> and
> Dorothy's. We enjoyed their pool and wonderful hospitality. Harry will be
> missed and I can only hope that I have ½ his energy when I'm in my 80s. He
> was a real inspiration to enjoying life for as long as you can.
>
> Kevin McGowan Photography
>
> 5250 Gulfton, Suite 2F
>
> Houston Texas 77081
>
> Studio: 713-665-3818
>
> Mobile: 281-433-2474
>
> kevin@kevinmcgowan. comb 
>
> web: www.kevinmcgowan. com
>
> [Non-text portions of this message have been removed]
>
> __._,_.___
>
> Messages in this topic
> 
> (3) Reply (via web post)
> |
> Start a new topic
> 
>
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> 

Re: [Texascavers] Refrigeration over fire?

[Andy Zenker]

I could see this working like an ice pack, where ammonium nitrite mixes with 
water.  Maybe the heat evaporates the water to steam so it can travel a path to 
the ammonium nitrite, starting the endothermic chemical reaction.  Very 
interesting food for thought ...


ROCKHUGGER
 Andy Zenker
Texas Caver




--- On Wed, 12/10/08, Matt Turner  wrote:
From: Matt Turner 
Subject: [Texascavers] Refrigeration over fire?
To: texascavers@texascavers.com
List-Post: texascavers@texascavers.com
Date: Wednesday, December 10, 2008, 3:45 PM


http://gizmodo.com/5105820/zero-electricity-fridge-freezes-with-fire
 
I'm really curious on how this works. I keep thinking  it's April 1st.
 Matt Turner



"It is the mark of an educated mind to be able to entertain a thought without 
accepting it." - Aristotle


"Empty pockets never held anyone back.Only empty heads and empty hearts can do 
that."- Norman Vincent Peale






From: Jon Cradit 
To: Mary Thiesse ; texascavers@texascavers.com
Sent: Wednesday, December 10, 2008 3:42:55 PM
Subject: RE: [Texascavers] Fw: [greater_houston_grotto] Harry Walker







I remember when I first started caving and listening to stories told by Harry 
and Charles and wishing some day to grow up to have stories like theirs.
Please pass along my deepest condolences to Harry’s family and the awe which I 
held him in.
 

Jon Cradit
 
 
 


From: Mary Thiesse [mailto:wpipistre...@yahoo.com] 
Sent: Wednesday, December 10, 2008 3:26 PM
To: texascavers@texascavers.com
Subject: [Texascavers] Fw: [greater_houston_grotto] Harry Walker
 


I believe there are a number of other texas cavers that would like to know this 
as well.

Mary TZ

 

- Forwarded Message 
From: Kevin McGowan 
To: greater_houston_gro...@yahoogroups.com
Cc: mcon...@swbell.net; cfro...@yahoo.com
Sent: Wednesday, December 10, 2008 10:22:09 AM
Subject: [greater_houston_grotto] Harry Walker






Hello,

Those of us in GHG that have been around a while remember Harry Walker. I'm
sorry to say that Harry passed away suddenly, yesterday after a long battle
with Alzheimer. 

David Locklear informed me that there will be a service for Harry at the
Crowder Funeral Home in Dickenson TX at 2pm this Saturday.

Crowder Funeral Home 851 Hwy. 517 @ 646 Dickinson, TX 77539. Phone:(281)
337-1515. 

I called to confirm this. This is a link to their site:
http://www.crowderf uneralhome. com/default. htm

Harry hiked many of the 14ers and had always been and avid outdoorsman. He
went with us into Honey Creek to look around when he was 80 years old. He
was also one of the founding members of GHG. 

His wife, Dorothy survives him. Many of us remember the parties at Harry and
Dorothy’s. We
 enjoyed their pool and wonderful hospitality. Harry will be
missed and I can only hope that I have ½ his energy when I’m in my 80s. He
was a real inspiration to enjoying life for as long as you can.

Kevin McGowan Photography

5250 Gulfton, Suite 2F

Houston Texas 77081

Studio: 713-665-3818

Mobile: 281-433-2474

kevin@kevinmcgowan. comb

web: www.kevinmcgowan. com

[Non-text portions of this message have been removed]
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[Texascavers] Refrigeration over fire?

[Matt Turner]

http://gizmodo.com/5105820/zero-electricity-fridge-freezes-with-fire
 
I'm really curious on how this works. I keep thinking  it's April 1st.
Matt Turner 


"It is the mark of an educated mind to be able to entertain a thought without 
accepting it." - Aristotle


"Empty pockets never held anyone back.Only empty heads and empty hearts can do 
that."- Norman Vincent Peale 





From: Jon Cradit 
To: Mary Thiesse ; texascavers@texascavers.com
Sent: Wednesday, December 10, 2008 3:42:55 PM
Subject: RE: [Texascavers] Fw: [greater_houston_grotto] Harry Walker


I remember when I first started caving and listening to stories told by Harry 
and Charles and wishing some day to grow up to have stories like theirs.
Please pass along my deepest condolences to Harry’s family and the awe which I 
held him in.
 
Jon Cradit
 
 
 
From:Mary Thiesse [mailto:wpipistre...@yahoo.com] 
Sent: Wednesday, December 10, 2008 3:26 PM
To: texascavers@texascavers.com
Subject: [Texascavers] Fw: [greater_houston_grotto] Harry Walker
 
I believe there are a number of other texas cavers that would like to know this 
as well.
Mary TZ
 
- Forwarded Message 
From: Kevin McGowan 
To: greater_houston_gro...@yahoogroups.com
Cc: mcon...@swbell.net; cfro...@yahoo.com
Sent: Wednesday, December 10, 2008 10:22:09 AM
Subject: [greater_houston_grotto] Harry Walker



Hello,

Those of us in GHG that have been around a while remember Harry Walker. I'm
sorry to say that Harry passed away suddenly, yesterday after a long battle
with Alzheimer. 

David Locklear informed me that there will be a service for Harry at the
Crowder Funeral Home in Dickenson TX at 2pm this Saturday.

Crowder Funeral Home 851 Hwy. 517 @ 646 Dickinson, TX 77539. Phone:(281)
337-1515. 

I called to confirm this. This is a link to their site:
http://www.crowderf uneralhome. com/default. htm

Harry hiked many of the 14ers and had always been and avid outdoorsman. He
went with us into Honey Creek to look around when he was 80 years old. He
was also one of the founding members of GHG. 

His wife, Dorothy survives him. Many of us remember the parties at Harry and
Dorothy’s. We enjoyed their pool and wonderful hospitality. Harry will be
missed and I can only hope that I have ½ his energy when I’m in my 80s. He
was a real inspiration to enjoying life for as long as you can.

Kevin McGowan Photography

5250 Gulfton, Suite 2F

Houston Texas 77081

Studio: 713-665-3818

Mobile: 281-433-2474

kevin@kevinmcgowan. comb

web: www.kevinmcgowan. com

[Non-text portions of this message have been removed]
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Recent Activity
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Yahoo! News
Odd News
You won't believe
it, but it's true
Yahoo! Groups
Do More For Cats Group
Connect and share with
cat owners like you
Check out the
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Stay up to speed
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