Improving one refrigeration compressor's performance

[boatpoker]

Originally Posted by StuM

Bad grammar doesn't have the potential to destroy boats and/or kill people. Incorrect electrical advise does.

I agree. My favourite is when experts refer to "electrolysis".

[Richard Kollmann]

Originally Posted by StuM

Bad grammar doesn't have the potential to destroy boats and/or kill people. Incorrect electrical advise does.

Now it looks like Louie "look at me circus" and amperes of current will close another forum thread without assisting boat owner rgleason with his inadequate refrigerator cooling.

[Chris31415]

Originally Posted by Richard Kollmann

Now it looks like Louie "look at me circus" and amperes of current will close another forum thread without assisting boat owner rgleason with his inadequate refrigerator cooling.

You could edit your original post to correct the units and this would all go away.

[StuM]

Originally Posted by Chris31415

You could edit your original post to correct the units and this would all go away.

Or start another thread giving correct advise using correct units.

[Richard Kollmann]

Originally Posted by StuM

Or start another thread giving correct advise using correct units.

I can not play your games without knowing the amp draw of the compressor in question at a specific point of operating or present of energy consumed in 24 hrs.

[Coolerking]

Originally Posted by StuM

Or start another thread giving correct advise using correct units.

I'd like to give some advice to you all, the tone of this has taken about 5 posts to devolve into a argument/waste of time.
Stu, my advice is to create your own thread regarding the use of eutectic plate refrigeration on small boats and the electrical advantages and disadvantages of these types of systems.
Describe the correct terminology to satisfy your standards then, then simply link it here ..
Before this one gets closed of course.
As for me... I'm off to install one of our state of the art 12/24vdc 1/2hp Masterfrost Eutectic systems today.
I'll look forward to your post, as I'm always interested in good info.
Have a great day all!

[guyrj33]

May I suggest we send private messages to those who incorrectly state units of current, voltage, energy and power. That will give them a chance to discreetly edit their post and improve the accuracy of future posts.

[BlackHeron]

Originally Posted by Off Trail

Of course he means amp-hours per hour. Please let's not ruin another thread.

+1000

[OzeLouie]

Originally Posted by Richard Kollmann

Now it looks like Louie "look at me circus" and amperes of current will close another forum thread without assisting boat owner rgleason with his inadequate refrigerator cooling.

His system is working fine, he simply wants to take advantage of 'abundant power when available to reduce battery demand later. I know this system well having been involved in it's build nearly two decades ago. RG has obviously notice the benefits of our later offering with automatic switch on and increased refrigeration output, when power is abundant (and would otherwise be wasted) and that is why I posted here (Post 4) a process that gives him a manual or automatic option to upgrade his system.

BTW Please don't recommend pure water as a phase change medium (Post 134 other tread) as it can cause the host tank to hydraulic and end up looking like a pumpkin, besides water phase changing at 0C is not cold enough for most projects.

[belizesailor]

Originally Posted by Dsanduril

I’m disappointed Stu[emoji3] You didn’t comment on:







Isn’t Ah/h just A?

Ha! I was thinking the same thing! [emoji6]

[BlackHeron]

Doesn't a glycol/water mix freezing at around -5C still expand some? We left a bit of head space in our eutectic tank because we were concerned about expansion and "turning into a pumpkin." Was that wrong?

[redsky49]

Originally Posted by StuM

Bad grammar doesn't have the potential to destroy boats and/or kill people. Incorrect electrical advise does.

You mean advice???
People who live in glass houses...

[OzeLouie]

Originally Posted by BlackHeron

Doesn't a glycol/water mix freezing at around -5C still expand some? We left a bit of head space in our eutectic tank because we were concerned about expansion and "turning into a pumpkin." Was that wrong?

They all can expand. What you did by leaving the top 10% of the tank empty then tighten up the filler cap once frozen is correct. The solution with glycol will see the liquid firstly form a slurry then slowly firm to a solid mass. The mix will expand while still fluid eliminating the force, and set solid once having expanded.
Cheers Louie

[Richard Kollmann]

I saw on another forum where there is supposed to be a Turf War on this forum.
Disagreeing about technical facts is defiantly not a Turf War if both sides have no financial gain in their advice. Interpolation of what is a good refrigeration depends on the functional needs of each boat owner. The real facts are, pleasure boat refrigeration means different things to each boater. My point being if you post a question on these forums asking “ What refrigeration in best for my boat?” Almost every boat refrigerator sold today will be liked by someone. My advice is to first decide on the temperature zones you must have in a refrigerated area and what it will take to achieve your objective. Do not forget Refrigeration hardware on a boat must be supported by moisture proof insulation adequate for planed cruising climate conditions, and an electrical or mechanical energy power grid adequate to support normal boat needs. Also the thing boat manufacturer did not properly design for is refrigeration. Not too long ago two refrigeration company owners attempt to sell their units based on how well their unit cooled beer. If all you are looking far is a cold beer cooler most any boat refrigerator will keep liquids cool so, buyers beware of marketing claims.

[waterman46]

I sent thanks to Kollman for his informative post but really, I would think even better of him if, as a professional he would simply use a - instead of a / when he means amp-hours.