Fresh water tank for fridge cooling - advice please

The principles of refrigeration is that the gas is ncompressed so gets hot this heat is dissipated ie carried away from the gas which then is decompressed so it gets. It obviously follows that the dissipation of the heat of the compressed gas is vital. heat is best removed by having the greatest heat gradient. Now air cooling inevitably menas that the air gets hot and unless this is force ventilated the gradient is less. Obviously also water soaks up heat better than air and when circulated ensures a very cool coolant. reult more efficient refrigeration. so water cooling is best.
olewill
 
an oil major used to pay me £58k a year 15 years ago to fix A/C systems so i dont need any one to tell me how refrigeration works thank you very much, typical response from some one who who likes to show the world they are knowledgable. the point i was making was that in the real world water cooling is the exception rather than the rule and why beat yourself senseless when air cooling will do the job quite adequately.
stu
 
Option A is obviosly best, but option C if you have to do it that way. If you're concerned about competing for water, some sort of electronic block to stop water pump running if freezer compressor going - as simple as an NC relay in the water pump circuit tripped by compressor?
Stu would prefer you to ditch the lot and go air cooled - me I love Kubota diesels, so toss whatever you've got and install a pair of them while you're at it ..... :-)
 
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what is wrong with air cooling as long as plenty of air flow available

[/ QUOTE ] The simple answer is 'Power Consumption'. On a boat with limited 12 v power the efficiency of water heat exchangers for referigeration systems is fairly convincing. I have been in the Gulf as well - think of how much power is used to cool those buildings down using air cooled heat exchangers.
 
Hi sorry to touch on sensibilities there. Not really trying to explain how it works but rather into a lead up to the fact that the efficiency of the condenser cooler is vital t0 total efficiency. Yes I have 3 air cooled refrigerated airconditioners and of course air cooled fridge. I bought then simply because what is common is incredibly cheap while what is uncommon even if it is better efficiency is incredibly expensive.
Our relatives in Virginia beach USA have a water cooled airconditioner using 2 bores into ground water. it is very efficient both for cooling and heatingbut obviously expensive to install.
By contrast here I can by for around 130 quid a 2 part airconditioner air cooled of course which is so cheap because everything is made in China. Even if air cooling is inefficient it seems adeqate although you wonder with 40 degree cooling air and so cheap. olewill
 
Am i missing sumink here?

um, why not get the units that have no pumped water nor air cooling but cool the refrigerant by piping it out out on the hull surface, hence not too much power used and no buzzing fan noise. Could you praps get those sort of units?
 
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