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Fans for cooling a fridge heatsink. On a boat. - Page 2

post #11 of 19
Thread Starter 
Quote:
Originally Posted by ehume;14490839 
Heh.You must have the best boat handler I ever saw, or you stick to really peaceful ponds if your galley hasn't taken on a little water yet.

But those 38mm fans will definitely push air. And one of them is under$60.

I was looking for 38mm fans, since they are nigh always superior to 25mm fans when it comes to static pressure. Couldn't found any, but the $50-60 fan is still a bit steep, it's like 3 times the price of a GT AP-29...
I'm also a bit torn between blade shape and extra depth on fans. I was also thinking of perhaps putting a shroud on the heat sink, not that it'd make a huge difference, but maybe some.

I must say I've no idea how you can get water in your galley (pardon, forgot the proper word for kitchen in the earlier post), unless it's an open-air galley or something like that? The Baltic Sea is quite a peaceful pond, but we've never had any issues with non-drinking water in our galley.
img1717s.jpg
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post #12 of 19
Yours is a well-protected galley. I can see why water resistance is not high on your list.

I would think any 38mm fan would do, then. And since you are not talking about a computer, bare wires would do. So any normal supplier could sell it to you. Premier Farnell, for example (I bought my San Aces from their Newark branch here in the US).
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post #13 of 19
Thread Starter 
Quote:
Originally Posted by ehume;14498133 
Yours is a well-protected galley. I can see why water resistance is not high on your list.

I would think any 38mm fan would do, then. And since you are not talking about a computer, bare wires would do. So any normal supplier could sell it to you. Premier Farnell, for example (I bought my San Aces from their Newark branch here in the US).

I'll look into it. The ease of using a retailer in Finland might sway me towards something that is available from here, still.
Perhaps either of these:
Yate Loon D12SL
http://www.aquatuning.fi/product_info.php/language/en/info/p11557_Scythe-Gentle-Typhoon-Fan-3000-rpm---120x120x25mm--.html

I will keep looking for other 38mm fans. Looking at these large motors, I'm also starting to think that a fan shroud will be necessary to get it a bit away from the heatsink surface.
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post #14 of 19
Quote:
On a boat.

With your swim trunks and your flippy floppies?
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post #15 of 19
Quote:
Originally Posted by LoneWolf15;14501311 
With your swim trunks and your flippy floppies?
I lol'd

the fans you mentioned last should be okay but they don't move as much air as the others
   
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post #16 of 19
Okay, on a serious note, have you checked out the NMB/Panaflo 120 x 38mm fans?

The low-noise ones aren't super-loud. They also last forever due to a great bearing design.

Low-Noise:
http://www.frozencpu.com/products/2525/fan-225/NMB-MAT_PanaFLO_FBA12G12L-BX_120x38mm_Fan_w_RPM_Monitoring_-_69CFM.html?tl=g36c15s562

Medium Noise:
http://www.frozencpu.com/products/2494/fan-193/Panaflo_M1-BX_120mm_Fan_w_RPM_Sensor_FBA12G12M-BX.html?tl=g36c15s562

There is a High output and an Ultra High output model, but while the noise quality isn't harsh, it's loud enough that I'd stick with low or medium.
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post #17 of 19
Yate medium speeds and a custom bracket. Job done.
post #18 of 19
Sounds like a joke, but is there a way to liquid cool the heat exchange? You should have a raw water line coming in just under that for the ships engines and what not, can you run a line and wrap a copper pipe a few times around the raw line, tube, pump and copper in the exchanger? Instant water cooling?

May be a tad extreme.

On my boat we had a similar issue, the solution was to move the cabin air more and to increase the cfm on the heat exchanger as well. Stagnant air in the cabin hurts just as bad.
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post #19 of 19
Thread Starter 
Quote:
Originally Posted by LoneWolf15;14501311 
With your swim trunks and your flippy floppies?

Take a good hard look.
Quote:
Originally Posted by LoneWolf15;14502893 
Okay, on a serious note, have you checked out the NMB/Panaflo 120 x 38mm fans?

The low-noise ones aren't super-loud. They also last forever due to a great bearing design.

Low-Noise:
http://www.frozencpu.com/products/2525/fan-225/NMB-MAT_PanaFLO_FBA12G12L-BX_120x38mm_Fan_w_RPM_Monitoring_-_69CFM.html?tl=g36c15s562

Medium Noise:
http://www.frozencpu.com/products/2494/fan-193/Panaflo_M1-BX_120mm_Fan_w_RPM_Sensor_FBA12G12M-BX.html?tl=g36c15s562

There is a High output and an Ultra High output model, but while the noise quality isn't harsh, it's loud enough that I'd stick with low or medium.

Actually, seems like I have to look into those as well. The 38mm Yate Loons I looked at have suddenly turned into 1350 rpm versions. I even still have the same product (product number matches) with "2300rpm" in my basket on the website biggrin.gif oh well. The only suitable 38mm fan I've found in this country now is the Scythe Ultra Kaze 3000rpm, but I haven't heard much good about those.
Quote:
Originally Posted by Cata1yst;14502936 
Yate medium speeds and a custom bracket. Job done.

Define medium speed? Had a 120x25mm Silverstone at 1500 rpm, and it was not enough at all. Also, the 2300rpm Yate I was about to order turned into a 1350rpm :E
Quote:
Originally Posted by RussianJ;14503069 
Sounds like a joke, but is there a way to liquid cool the heat exchange? You should have a raw water line coming in just under that for the ships engines and what not, can you run a line and wrap a copper pipe a few times around the raw line, tube, pump and copper in the exchanger? Instant water cooling?

May be a tad extreme.

On my boat we had a similar issue, the solution was to move the cabin air more and to increase the cfm on the heat exchanger as well. Stagnant air in the cabin hurts just as bad.

Oh, I thought about that and dismissed it already. Much too complicated, would have to remove the heat sink, and it would effectively prevent moving the fridge if necessary. We are also going to improve ventilation in the whole interior, as well as indeed using fans to exhaust warm air from the space behind the fridge, thus sucking cooler air from the bilge smile.gif

EDIT:
As 38mm fans were not easily available and we are in a bit of a hurry, pulled the trigger and got two 1900rpm Slip Streams and a 4250rpm Gentle Typhoon. Going to use (and already tested) them with an mCubed MiniNG, with one temperature sensor on the fridge heatsink controlling the GT and another sensor somewhere controlling the Slip Streams. Both channels were set to analog voltage regulation rather than PWM, as PWM was making the fans sound weird. Thanks for help and suggestions everyone!
Edited by Aeonus - 8/17/11 at 11:05am
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