On Sun, 04 Jul 2004 00:05:55 GMT, something compelled Me
, to say:

In article ,
(JAXAshby) wrote:

propane. it has been around since Kriste was a corporal in the infantry.

and one should want an explosive gas onboard a sailboat, why?????

The electricity in the computer you're using to post to this
group has the potential of killing you, yet you use it. One
assumes that it's because you aren't sticking your fingers into
the power supply, or ****ing into the vents.

Propane isn't inherently dangerous, it just needs to be treated
with respect. A properly installed, maintained, and operated
propane system is safe. It's cost, availability, and ease of use
make it a very good source of heat in a boat.

Questions of safety with propane on boats have long been addressed. The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical. That makes them
great for RVs and maybe power boats but not for sailboats.
--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.

On 04 Jul 2004 02:05:22 GMT, (JAXAshby) wrote:

The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.

lateral forces mimic inclination.

you don't understand how the system works. please don't comment again.

The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.

lateral forces mimic inclination.

On 04 Jul 2004 13:17:53 GMT, (JAXAshby) wrote:

you don't understand how the system works. please don't comment again.

The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.

lateral forces mimic inclination.



Well, I'm beginning to understand how the system works....someone
posts something....you wank away....someone disagree....you display
the depth of your knowledge and charm....and the cycle goes on.

whore ace, you know nothing about gas absorbtion refrigeration. go stand in
the corner and be quiet. do not interupt the discussion again.


you don't understand how the system works. please don't comment again.

The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.

lateral forces mimic inclination.



Well, I'm beginning to understand how the system works....someone
posts something....you wank away....someone disagree....you display
the depth of your knowledge and charm....and the cycle goes on.

hore ace, here is the stupid statement you made which shows to one and all you
don't have a clew what you are talking about in regard to gas absorbtion
refrigeration and were just picking junk out of the air just to say something
hoping the rest of us here might notice you. you act like a high school
sophomore whose voice has not yet changed. go away and come back when you
shave at least twice a week.

lateral forces mimic inclination.

You people seem to have missed two things in the thermodynamics part of
your education.

A Servel Cycle (the identifier for water/hydrogen/ammonia abortion
refrigeration) requires both the persistance of two liquid/vapor seals
and a lot of vertical room.

The vertical height is required so the ammonia can get condensed and
then be run down into the evaporator by gravity.

The two sealing loops separate a: ammonia vapor from ammonia liquid and
hydrogen and b: water from hydrogen.

The "household" units - these include RV - do not have seals that work
well out of vertical. Seals for these have been designed that do just
fine at a considerable offset. If the seals get blow out, they will
re-establish themselves with a reasonable amount of running time.

A one time I was employed by a company that was in the process of
developing a refrigeration system that could used the exhaust heat of an
RV to be the motivating heat for the refrigeration (apart from the fact
that the system had real flexability issues as far as installaion) the
whole program went down in flames whent he bottom fell out of the RV
market during the original Arab Oil Embargo.

Another issue for sailors would be that the COP (co-efficient of
performance - sort of the effieciency) of Servel units was not as good
as an R12 or R22 unit.

Matt Colie


Horace Brownbag wrote:
On 04 Jul 2004 02:05:22 GMT, (JAXAshby) wrote:


The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.


lateral forces mimic inclination.

matt, close but no cigar. the unit needs to be more or less vertical so that
the liquid drains all the way back to the burner. If the liquid does not get
back there they burner pot gets scorched and the unit is ruined.

but yes, a cigar regarding efficiency. gas absorbtion refrigerators are much
less efficient than compressor reefers, when comparing energy input vs cooling
capacity. One a boat, electricity is incredibly expensive to make per
kilowatt, and HUGELY expensive compared to the same kilowatt purchased as
propane.

A kilowatt of electricity produced on a boat can cost $2 to $5 dollars EACH,
while a gallon of propane (about 90,000 btu's, or about 30 kilowatts) goes for
maybe a couple bucks (? I can't remember how much I paid for 10# of propane
last summer, but it certainly was pocket change)

You people seem to have missed two things in the thermodynamics part of
your education.

A Servel Cycle (the identifier for water/hydrogen/ammonia abortion
refrigeration) requires both the persistance of two liquid/vapor seals
and a lot of vertical room.

The vertical height is required so the ammonia can get condensed and
then be run down into the evaporator by gravity.

The two sealing loops separate a: ammonia vapor from ammonia liquid and
hydrogen and b: water from hydrogen.

The "household" units - these include RV - do not have seals that work
well out of vertical. Seals for these have been designed that do just
fine at a considerable offset. If the seals get blow out, they will
re-establish themselves with a reasonable amount of running time.

A one time I was employed by a company that was in the process of
developing a refrigeration system that could used the exhaust heat of an
RV to be the motivating heat for the refrigeration (apart from the fact
that the system had real flexability issues as far as installaion) the
whole program went down in flames whent he bottom fell out of the RV
market during the original Arab Oil Embargo.

Another issue for sailors would be that the COP (co-efficient of
performance - sort of the effieciency) of Servel units was not as good
as an R12 or R22 unit.

Matt Colie


Horace Brownbag wrote:
On 04 Jul 2004 02:05:22 GMT, (JAXAshby) wrote:


The
real problem with absorption cycle refrigeration (gas refrigerators) is
that they must stay within 5 to 7 degrees of vertical.

not true. unless the vehicle is NOT moving side to side.


lateral forces mimic inclination.