Cooler recommendation

[OM222O]

Hello, I live in the uk and I designed a "DC electronic load". it is used to test power supplies and batteries, so it basically converts all the input power into heat. It's a 200 watt unit (it's split into 2 100 watt portions for easier cooling). I was wondering what cooler I could use? I mainly looked at 1U sever coolers and the Dynatron R16 seems to be the perfect for the task, but it's not available in the UK (about 30 to 40$ just on shipping is a no go). something around 50 to 60GBP would be as much as I can spend right now, any recommendations?

(Please don't recommend the basic aluminum heat sinks, I want something with either heat pipes or a vapor chamber to minimize the risk of thermal runaway)

[EsaT]

How much space there's for cooling system?

Any really big tower heatsinks should handle it if given high enough speed fan.

[Firewrath9]

can you get a computer heatsink and use lots of thermal glue/paste and like tape it down?

 

[OM222O]

I am looking for a computer heatsink and yes, the component that produces the heat will be sandwiched between the board and the cooler, just like a normal CPU. I don't really want a huge air cooler and most of the ones I found are rated for 95 watts even at highest fan setting (noise is not an issue). I was looking at cheap air coolers like the Hyper 212, but I don't seem to be able to find an official TDP for it. Anything that's rated for about 110 watts (10 watts just as a bit of headroom over the 100 watts of the load) should do the trick.

 

Edit: the socket and mounting type does not matter as it can be created on the PCB, ANY cooler with the required TDP is acceptable

[WoodenMarker]

How big of a cooler can you fit?

[OM222O]

something that's not too heavy to break the board, preferably low profile ones so it doesn't put a lot of torsional force on the board, but anything that costs less that 30 (cause I can spend about 60 for a pair) with 110watts or more tdp is good enough!

[WoodenMarker]

1 hour ago, OM222O said:

something that's not too heavy to break the board, preferably low profile ones so it doesn't put a lot of torsional force on the board, but anything that costs less that 30 (cause I can spend about 60 for a pair) with 110watts or more tdp is good enough!

I'm guessing you mean something like this: http://www.fivefishstudios.com/diy/eload/

The coolers used on the board above are D60188-001's or stock Core 2 Duo heatsinks. 

http://www.frostytech.com/articleview.cfm?articleid=2132&page=4

https://www.anandtech.com/show/10500/stock-cooler-roundup-intel-amd-vs-evo-212/6

If that's what you're aiming for, BXTS13A's would be good: https://uk.pcpartpicker.com/product/Hp98TW/intel-cpu-cooler-bxts13a

 

Make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

[OM222O]

6 hours ago, WoodenMarker said:

I'm guessing you mean something like this: http://www.fivefishstudios.com/diy/eload/

The coolers used on the board above are D60188-001's or stock Core 2 Duo heatsinks. 

http://www.frostytech.com/articleview.cfm?articleid=2132&page=4

https://www.anandtech.com/show/10500/stock-cooler-roundup-intel-amd-vs-evo-212/6

If that's what you're aiming for, BXTS13A's would be good: https://uk.pcpartpicker.com/product/Hp98TW/intel-cpu-cooler-bxts13a

 

Make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

Yes! That's exactly the type of board that I'm making.

The stock heat sinks might be cheaply available, but they cause the IGBTs( the parts that produce the heat) to run really hot (around 80~90c) which means they have to be throttled just like a cpu to stop thermal runaway, they might advertise it for 240 watts, but it can only manage that under short bursts!

I went back to look for the hyper 212 and it seems to be rated for 150 watts. http://www.coolermaster.com/tdp-and-socket-compatibility/

I would still really like to go with a low profile cooler though ... if there isn't one, I just have to make sure I pick the board up by both heat sinks.

[WoodenMarker]

49 minutes ago, OM222O said:

Yes! That's exactly the type of board that I'm making.

The stock heat sinks might be cheaply available, but they cause the IGBTs( the parts that produce the heat) to run really hot (around 80~90c) which means they have to be throttled just like a cpu to stop thermal runaway, they might advertise it for 240 watts, but it can only manage that under short bursts!

I went back to look for the hyper 212 and it seems to be rated for 150 watts. http://www.coolermaster.com/tdp-and-socket-compatibility/

I would still really like to go with a low profile cooler though ... if there isn't one, I just have to make sure I pick the board up by both heat sinks.

The BXTS13A also rated for 150w and performs better than the D60188-001's used on FiveFishStudios' electronic load.

The anandtech article I linked compared the BXTS13A BXTS15A to the 212 Evo. The 212 Evo seems to perform a bit better but they're pretty close. 

[OM222O]

43 minutes ago, WoodenMarker said:

The BXTS13A is also rated for 150w and performs better than the D60188-001's used on FiveFishStudios' electronic load.

The anandtech article I linked compared the BXTS13A  BXTS15A  to the 212 Evo. The 212 Evo seems to perform a bit better but they're pretty close. 

I actually find it weird because all of the coolers that I find to be suitable in terms of size, are rated for "95watts or more" in a case with sufficient airflow.

They are gonna be used in a pull configuration the exhaust the warm air into ambient. does it mean that if I use better fans with higher speed etc, I will get a lot more cooling performance? I really like the SST-AR11 from silverstone, and having looked at the specs for https://www.silverstonetek.com/product.php?pid=368&area=en , it specifies vastly different tdps! from 65(fanless) to 130 with 2 fans!

I might go with your recommendation if I don't find any better options.

 

The anandtech article shows they have tested them for loads of upto 340watts and they still go into thermal runaway! the junction temperature just went higher but they didn't throttle (even at 340 watts the core temp would be around 75 to 80c) that's actually impressive!

[WoodenMarker]

38 minutes ago, OM222O said:

I actually find it weird because all of the coolers that I find to be suitable in terms of size, are rated for "95watts or more" in a case with sufficient airflow.

They are gonna be used in a pull configuration the exhaust the warm air into ambient. does it mean that if I use better fans with higher speed etc, I will get a lot more cooling performance? I really like the SST-AR11 from silverstone, and having looked at the specs for https://www.silverstonetek.com/product.php?pid=368&area=en , it specifies vastly different tdps! from 65(fanless) to 130 with 2 fans!

Using higher rpm fans can slightly or vastly improve cooling depending on the heatsink design and original fan used. Some coolers are held back by fan speed and appreciate fan replacements whereas others are held back back the lack of heatsink.

Ponchato's temperature delta vs. rpm graph illustrates this principle:

When referring to a case with sufficient airflow, manufacturers are referring to how case airflow can affect the cooler's performance. This includes the cooler's proximity to the case panels or other components causing turbulence and case fans facing the same or different directions in respect to the cooler. This is generally mentioned for downdraft coolers since the intakes and exhausts of the cooler can often conflict with system airflow.

 

In the case of the NT06-PRO, the performance jump from 95w to 130w is from a 20mm thick fan to a 25mm thick fan. The jump from 1x 20mm fan to using both fans is 95w to 150w. The jump is big due to the dense fin array and lack of static pressure from the fans used.

The AR-11 uses smaller fans which scales better for static pressure. Replacing or adding a fan here (if it could be done in a way that made sense) would make less of a difference. Replacing the fan with a NF-A9x14 which might be the best fan replacement available doesn't make as much of an improvement: https://techbuyersguru.com/40-featherweight-fight-silverstone-ar11-vs-noctua-nh-l9i-0?page=2

 

I just noticed that I mistook the BXTS15A in the anandtech article for the BXTS13A. 

BXTS15A here: https://uk.pcpartpicker.com/product/YykwrH/intel-cpu-cooler-bxts15a

I'm not sure which perform better but either should be plenty for cooling. The BXTS13A is larger and heavier and should perform better if the 130w vs. 150w TDP spec is an accurate comparison for performance.