Airflow In a case with PSU?

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MikeBuildsAComputer

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Oct 21, 2015
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I Want to buy a PSU for a while now. But I just need one more thing to confirm I can buy This new PSU. What do I need to with airflow? Where should air be pointed at? In my case I have place for a PSU Ventilator Only on the back. But not above. So my question is does this matter? For example The ventilator is pointing below (towards my motherboard and everything) Is that a problem?

Thanks for you're time!
 
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snurp85
If the only fan in the PSU is on the back of it, it really doesnt matter how you position the PSU in the case. The airflow from the PSU is going to be so low that it will not really affect the airflow of the rest of the case.

So yea, this really is nothing to worry about.
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snurp85

snurp85

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So if i am visualizing this properly... your PSU is at the top of the case. It has a large fan on the bottom of it that draws air up and out the back.

This is not a problem. You can then either orient your CPU heatsink to blow air up into the PSU fan or have it blow out the back (i assume there is a vent on the back of the case that roughly lines up with the cpu heatsink). Either will work just fine.
 
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SgtScream

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Generally the intake is the large surface area fan and the back of the psu is the exhaust. You can either have the fan facing up in the case or down, if the case provides ventilation in that configuration.
It also depends on:
1. Your other hardware specs (which aren't listed).
2. Where and what type of surface area you'll be keeping your computer on.
3. The size and type of case you'll be putting your hardware in.
 
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geofelt

geofelt

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The job of a fan in a psu is to protect the psu if needed.
It has no part in case cooling, and with more efficient and properly sized units, the fan may never run at all.
Orientation can be anything. A psu works equally well upside down.
Probably the only real consideration is to mount it so that the intake is not blocked.
The intake can be inside the case or outside, it matters not.
 
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MikeBuildsAComputer

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My psu Is like this https://www.google.nl/search?q=rear+power+supply&biw=1920&bih=974&tbm=isch&source=lnms&sa=X&ved=0ahUKEwit9IDVssnRAhXFWhoKHXRlAVAQ_AUIywIoAQ#imgrc=9B1SQDBnFQOCOM%3A On top of my computer and that ventilator can flow air out of my computer in the back. But you say I can use for a example a PSU With the airflow on the bottom of the PSU aswell? Even though my PSU is on top?

 
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MikeBuildsAComputer

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Oh I see now. You mean that wherever the Psu fan Is doesn't matter. Only if there is enough space for the ventilator matters?

 
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MikeBuildsAComputer

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1: I did not say the hardware because I am only curious of how the airflow works in a PSU
2: I am putting my computer on an hard carpet.
3: I am using the case of the hz220 work station. I couldn't really find the size of this case because this model isn't very populair.
 
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Seaweed Monster

Seaweed Monster

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From what I am perceiving, your PSU mounting holes are located at the top of your case.

In terms of airflow for a PSU. It does not require the same kind of air flow for example a graphics card would. A PSU would happily run without any direct air flow and just in-taking the air from around itself or in your situation, inside the case.

Mounting the PSU with the in-take fan pointing towards your CPU and motherbaord is absolutely fine, plus the PSU will act as a exhaust fan, as it dumps warm air out the vents towards the back of PSU.

I wouldn't worry too much, as long as it as space to in-take air from inside the case, It will not be a problem.

Have fun!

 
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snurp85

snurp85

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If the only fan in the PSU is on the back of it, it really doesnt matter how you position the PSU in the case. The airflow from the PSU is going to be so low that it will not really affect the airflow of the rest of the case.

So yea, this really is nothing to worry about.
 
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