Increasing thermal efficiency?

[norty303]

Ok, so I want to try and improve the way heat is removed from my projector...

Would a simple solution just be to buy a number of those 30mm x 30mm northbridge cooler heatsinks and use self adhesive thermal pads to stick them to the underside of my baseplate - especially in key areas like under the galvo drivers and TEC cooled heads - and then use a fan to blow across them towards an exhaust fan?

I would think that this should remove some heat before it spreads horizontally through the baseplate.

I like this idea because its simple to achieve, parts are readily available and cheap, and the fixing can be done in a few minutes.

Any reasons why not, or alternative suggestions?

[badger1666]

just build your projector like i did , and the only fan i use is just to flow a little air over the power supplys other than that it could be fanless , i used a 300mm x 300mm x40mm
heat sink from RS

[norty303]

Nice idea but case and projector already exist!

Jem has the same case also suffering from heat issues due to TECs, so we're going to work through a few ideas I think and see what the results are.

[badger1666]

shame you cant build on a heat sink i built a 3w rgb on one, and it takes the heat from four different tecs , and barely gets warm , so no fans
i am sure your find a way around it.

[White-Light]

Nice idea but case and projector already exist!

Can't you buy a heat sink for the bottom like badgers then bolt it on with a layer of arctic silver between it and the base?

Found these on google that it might be possible to add:

http://www.birminghamaluminium.com/heatsinks/1

also:

http://www.abl-heatsinks.co.uk/index.php?page=heatsinks

[LaNeK779]

wouldn't a split-baseplate design work ok?

mechanically and thermally isolate the baseplate that holds the tec cooled units from the baseplate that holds the optics?

[dnar]

My plan (with the MrWilling/Edison case) is to mount heatsinks to the base plate on the electronics side so that the air flow through the case pulls heat from the baseplate. I am yet to draw it up.

[dave]

Thats pretty much how we designed our cases.




Space under the base plate to mount a heatsink and fans. ( box is shown with the lid/front panel removed. )

My plan (with the MrWilling/Edison case) is to mount heatsinks to the base plate on the electronics side so that the air flow through the case pulls heat from the baseplate. I am yet to draw it up.

[dnar]

I think I have posted this before, but I can't help but like the idea of using a heatsink tunnel with fans each end. The whole projector could be sealed...

http://jaycar.com.au/productView.asp...T&SUBCATID=751



Imagine that tunnel running front-to-back or side-to-side with a fan on one end or both. Bolt your PSU's and drivers to the tunnel, bolt the tunnel to your baseplate inline with laser modules and woosh.

[allthatwhichis]

Dave... didn't y'all have one built with a row a fans on the bottom in front?