Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme by
itself
might be sufficient. It can be replenished with ice made in your freezer.

Doug
s/v Callista

"Glenn Ashmore" wrote in message
news:vW5Uc.29891$Jo1.23863@lakeread01...
#2 is the idea I am leaning towards. I have room to mount an air cooled
BD50 directly below the box with plenty of ventilation.

Couple of things still have me stalled. I would like to use .192" ID
stainless tube which should stand up better to bumps with cans and
corrosion but the thermal conductivity is a lot lower than copper. I
could compensate by going to .335" ID but that might slow down the
refrigerant to much to push the oil through. Think I will stick with
.192" and adjust the expansion valve and compressor speed.

The other thing is probably that I am not reading the charts right but I
can't figure out which orifice to use in the Danfoss expansion valve.
They all look to large for the BD50.

BTW, have you revised the DIY book? I have about worn my copy and the
Calder book out. :-)

Richard Kollmann wrote:
Glen, there are three proven way to build the system you are looking
for:

1. Install a full length stainless steel holding plate in an insulated
box, it can be used as a dry box or a wet box. See picture on front
page of my web site, this box's holding plate is connected to a
Danfoss BD2.5 compressor. The purpose of the plate in this cooler is
to act as a flywheel affect of energy when warm product is put in the
box.
2. The same insulated box can be cooled by a plain copper tube coil
attached to interior wall. When I did fish hold box designs I used
stainless tubing with tubing above and below the water.
3. Either one of the above concepts can be used with an existing large
refrigeration system by splitting the refrigerant flow.

I have system #1 in one of my boats and system #3 in the other.

Glen here is a concept using a Danfoss BD50 air cooled condensing
unit, and 50 ft. of ¼ inch tubing as an evaporator coil, A receiver
and expansion valve instead of a capillary tube.

This combination in a drink cooler with a 30 degree evaporator
temperature might deliver 790 btu. Per hour. ( Danfoss ASHRAE
Capacity chart with compressor running at 3500 rpm ). I would also
install a manual speed selector switch to adjust compressor speed for
current box demand.

From the author of books on boat refrigeration
http://www.kollmann-marine.com

--
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

On Mon, 16 Aug 2004 13:12:18 -0400, Glenn Ashmore
wrote:

#2 is the idea I am leaning towards. I have room to mount an air cooled
BD50 directly below the box with plenty of ventilation.

Couple of things still have me stalled. I would like to use .192" ID
stainless tube which should stand up better to bumps with cans and
corrosion but the thermal conductivity is a lot lower than copper. I
could compensate by going to .335" ID but that might slow down the
refrigerant to much to push the oil through. Think I will stick with
.192" and adjust the expansion valve and compressor speed.

Glenn,

Another alternative could be a large stainless tube or box filled with
PEG/potable antifreeze, and containing the spiral of copper tube
inside. Depends the thermal conductivity of the PEG though. If a
stainless box is used this could have an aluminium finned surface to
improve thermal conductivity.

cheers,
Pete.

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme by
itself
might be sufficient. It can be replenished with ice made in your freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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

Ah! He's finally 'fessed up. Complexity is the goal. ;-)

Glenn Ashmore wrote:

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme by
itself
might be sufficient. It can be replenished with ice made in your freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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 true weakness of "software types." A simple answer is never good
enough! :-)

"Jim Conlin" wrote in message
...
Ah! He's finally 'fessed up. Complexity is the goal. ;-)

Glenn Ashmore wrote:

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme by
itself
might be sufficient. It can be replenished with ice made in your
freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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

I'm a software type, too. True, I get paid more for a complex solution, but for
my own use, simpler is better.

Jim

Fred Williams wrote:

The true weakness of "software types." A simple answer is never good
enough! :-)

"Jim Conlin" wrote in message
...
Ah! He's finally 'fessed up. Complexity is the goal. ;-)

Glenn Ashmore wrote:

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme by
itself
might be sufficient. It can be replenished with ice made in your
freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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

ASSHOLE!

"Fred Williams" wrote in message
...
The true weakness of "software types." A simple answer is never good
enough! :-)

"Jim Conlin" wrote in message
...
Ah! He's finally 'fessed up. Complexity is the goal. ;-)

Glenn Ashmore wrote:

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme
by
itself
might be sufficient. It can be replenished with ice made in your
freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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

Well, that was certainly a simple answer....

On Thu, 19 Aug 2004 22:50:49 -0400, "Doug Dotson"
wrote:

ASSHOLE!

"Fred Williams" wrote in message
.. .
The true weakness of "software types." A simple answer is never good
enough! :-)

"Jim Conlin" wrote in message
...
Ah! He's finally 'fessed up. Complexity is the goal. ;-)

Glenn Ashmore wrote:

Doug Dotson wrote:
Glenn,

I'm starting to wonder if a good ice chest like the Coleman Extreme
by
itself
might be sufficient. It can be replenished with ice made in your
freezer.

Doug
s/v Callista

Doug,

You should know me better than that by now. :-) I love my gadgets and
besides, when I have to abandon my shop for the cruising life I will
need things to fix or I will die from withdrawals. :-)

--
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

rhys says:

Well, that was certainly a simple answer....


But was it good enough...? ;-P

I will have to admit to an old programming axiom:
"Within every complex program there is a simple one struggling to get
out." :-)

--
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