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Effective way to cool a laptop AC Adapter?

post #1 of 6
Thread Starter 
My Asus laptop has a 90W adapter which gets relatively hot.

To worsen the issue, the placement of electrical outlets in the house is such that the adapter ends up right in front of the window, where the glaring morning sun beats down on it.

The heat level is such that putting your palm on it is not impossible; but it does cause slight discomfort.

Roughly 50+ to 60 degrees hot.
I've yet to really measure the heat level on the surface of the adapter, so this is just an estimate.

I'm worried about the lifespan of the components in there. Right now I have attached four rubber feet to the adapter, and set it on an upwards-firing 120mm fan powered by another brick. Though this is efficient, the amount of surface area in contact with airflow from the fan is minimal.

My idea is to place a heatsink with a thermal pad on it, and then place it on top of the adapter, with a fan attached of course.

This seems good as a larger portion is now in contact with a heatsink.

However, I am looking for a more efficient, long-term solution.
Any ideas, OCN?
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post #2 of 6
It's fine, those VRM's are rated for literally burn your skin temperatures and still operate for thousands of hours.

You can just take an old heat sink and stick an elastic band around it.
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post #3 of 6
Thread Starter 
And I assume they're using the plastic cover of the adapter as a heatsink? >.<
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post #4 of 6
Quote:
Originally Posted by Volvo View Post
And I assume they're using the plastic cover of the adapter as a heatsink? >.<
Pretty much, yea. Though they do it because the components on the inside don't mind at all.

Probably the most heat sensitive component in there is the capacitors, but even those are rated for 80C.
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post #5 of 6
Thread Starter 
Yeah I was kinda worried about the capacitors, and wondered if a cooler internal ambient would benefit them.
T8
(17 items)
 
T6
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T5
(17 items)
 
CPUMotherboardGraphicsRAM
Intel Core™ i5 2400 @ 3.0 ASROCK Z68 Pro 3 M AMD Radeon HD 6950 Shader Unlocked, @ 900/1400 2x KVR1333D3N9/4G 
RAMHard DriveHard DriveHard Drive
2x KVR1333D3N9/2G Plextor M5S 128GB Western Digital Caviar GreenPower WD5000AACS Western Digital Caviar WD2500JS 
Optical DriveCoolingOSMonitor
LiteON iHAS324 DVD-RW DL Thermaltake Water 2.0 Pro w/ AVC DS12025B12U Windows 7 Home Premium x64 Dell Ultrasharp U2211H 
KeyboardPowerCaseMouse
Rapoo V500 (Kailh Yellow) FSP Aurum AU-400 400W 80PLUS Gold CoolerMaster Silencio 352 CoolerMaster Storm SPAWN 
Audio
Fenda F&D H200 2.0 USB Powered 
CPUMotherboardGraphicsRAM
Intel Core i3 2100 @ 3.0 ASROCK Z68 Pro 3 M AMD Radeon HD 5770 1GD5 (Reference) 2x KVR1333D3N9/4G 
RAMHard DriveHard DriveOptical Drive
2x KVR1333D3N9/2G Transcend SSD370 128GB WD Scorpio Blue WD7500BPVT Samsung SH-223C 
CoolingCoolingOSMonitor
Thermaltake Water 3.0 Performer-C AKASA Ball Bearing Windows 7 Home Premium x64 Dell Ultrasharp U2311H 
KeyboardPowerCaseMouse
Armaggeddon Strike Eagle MKI-3 (Kailh Red) Dell (Foxconn) F320EM-00 320W 80PLUS Gold CoolerMaster Elite 341 CM Storm SPAWN 
Audio
Dell USB Powered 2.0 
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T8
(17 items)
 
T6
(17 items)
 
T5
(17 items)
 
CPUMotherboardGraphicsRAM
Intel Core™ i5 2400 @ 3.0 ASROCK Z68 Pro 3 M AMD Radeon HD 6950 Shader Unlocked, @ 900/1400 2x KVR1333D3N9/4G 
RAMHard DriveHard DriveHard Drive
2x KVR1333D3N9/2G Plextor M5S 128GB Western Digital Caviar GreenPower WD5000AACS Western Digital Caviar WD2500JS 
Optical DriveCoolingOSMonitor
LiteON iHAS324 DVD-RW DL Thermaltake Water 2.0 Pro w/ AVC DS12025B12U Windows 7 Home Premium x64 Dell Ultrasharp U2211H 
KeyboardPowerCaseMouse
Rapoo V500 (Kailh Yellow) FSP Aurum AU-400 400W 80PLUS Gold CoolerMaster Silencio 352 CoolerMaster Storm SPAWN 
Audio
Fenda F&D H200 2.0 USB Powered 
CPUMotherboardGraphicsRAM
Intel Core i3 2100 @ 3.0 ASROCK Z68 Pro 3 M AMD Radeon HD 5770 1GD5 (Reference) 2x KVR1333D3N9/4G 
RAMHard DriveHard DriveOptical Drive
2x KVR1333D3N9/2G Transcend SSD370 128GB WD Scorpio Blue WD7500BPVT Samsung SH-223C 
CoolingCoolingOSMonitor
Thermaltake Water 3.0 Performer-C AKASA Ball Bearing Windows 7 Home Premium x64 Dell Ultrasharp U2311H 
KeyboardPowerCaseMouse
Armaggeddon Strike Eagle MKI-3 (Kailh Red) Dell (Foxconn) F320EM-00 320W 80PLUS Gold CoolerMaster Elite 341 CM Storm SPAWN 
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post #6 of 6
Quote:
Originally Posted by Volvo View Post
Yeah I was kinda worried about the capacitors, and wondered if a cooler internal ambient would benefit them.
Practically anything would run longer by being kept cool but it is kind of like overclocking, it will reduce the life time of the components but the life time is already so long that it won't matter anyways.
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160 Hitachi HDD LG Super-Multi Drive with SecurDisc Windows 7 - Ultimate (x86) Samsung SyncMaster 2043SWX 20" 1600x900 
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Steelseries QcK 
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X-Caliber
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CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q8300 @3.0 Ghz Gigabyte EP43 UD3L ATI Radeon HD3850 512MB 800/950 4x1 GB 800 mhz DDR2 (Dual Channel) 
Hard DriveOptical DriveOSMonitor
160 Hitachi HDD LG Super-Multi Drive with SecurDisc Windows 7 - Ultimate (x86) Samsung SyncMaster 2043SWX 20" 1600x900 
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Logitech G15 Gaming Keyboard rev. 2 460 watt Coolermaster Coolermaster Elite Razer Deathadder 
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