Page 10 of 16 FirstFirst 12345678910111213141516 LastLast
Results 91 to 100 of 152

Thread: my ideas to combat heat

  1. #91
    Maximum Bitrate eCarô's Avatar
    Join Date
    May 2003
    Location
    SE Michigan
    Posts
    810
    I figured that telling you they are marine vents would get you pointed in the right direction, and you'd take it from there. Guess not.

    Get them at Bob's Marine in Taylor, MI USA

  2. #92
    Raw Wave wizardPC's Avatar
    Join Date
    Jun 2000
    Location
    Nashville
    Posts
    2,635
    well, dammit.

    Yet again, everything works in testing but not in real world situations. I had the computer running in the trunk for 2 hrs with the temp staying at about 81F, which was about 5F above ambient at the time. I was about to leave for Nashville (about 4 hours from here) so I wanted to kinda make sure this was gonna work, thats why the 2 hour test with the car stationary.

    I was all packed up, and went to go pick up my friend for the trip, and within 6 minutes the temperature had increased to 102F. I had to dismantle my false floor setup and unplug all the cables so I could hook everything up to my laptop. I left the carputer where it was in order to monitor temperatures.

    With the fans on or off, the temperature rises rapidly (about 2F/minute) when the car is moving at any speed. I initially thought that this was due to the exhaust vent being so close to the muffler, but even after driving for an hour whenever the car comes to a stop the temperature begins to drop if I have the fans on.

    on a side note, my laptop had ZERO problems with the heat. We even left it on in the trunk whilst we went to game 6 of the NHL playoffs in Nashville on saturday. The temperature in the trunk hit 143F, and when we got in the laptop had no problems at all.
    Debt as of 1/1/05: $34,354.48
    Debt as of July 4, 2007: $0.00 explanation
    I'M DEBT FREE!!
    I'm now a reasonably successful gunblogger.

  3. #93
    Maximum Bitrate eCarô's Avatar
    Join Date
    May 2003
    Location
    SE Michigan
    Posts
    810
    So, with the PC off, temps rise when you are moving, then drop when you stop (when the fan is on)?

  4. #94
    Raw Wave wizardPC's Avatar
    Join Date
    Jun 2000
    Location
    Nashville
    Posts
    2,635
    yeppers
    Debt as of 1/1/05: $34,354.48
    Debt as of July 4, 2007: $0.00 explanation
    I'M DEBT FREE!!
    I'm now a reasonably successful gunblogger.

  5. #95
    Maximum Bitrate eCarô's Avatar
    Join Date
    May 2003
    Location
    SE Michigan
    Posts
    810
    The only explaination I can think of is engine heat. Most of the heat coming off the engine goes out under the car. You must be sucking the hot air in.

    I wonder why you'd want outside air anyway. You can't control the temp of the outside air. Why not bring air from the passenger compartment back to your PC?

  6. #96
    Constant Bitrate
    Join Date
    Sep 2002
    Location
    Austin / Houston TX
    Posts
    122
    Is the car chassis getting hot as well? I know the trunk area of my Jeep warms up after I drive around for a little bit - it's accepting the radiated heat from the muffler.

    BTW, I'm still curious if you're going to add some sort of dust filter. There must be enough dirt outside to start breeding your own hoard of dust bunnies.
    No Carputer YET.
    A car I'm designing...

  7. #97
    Variable Bitrate
    Join Date
    Mar 2004
    Posts
    315
    Quote Originally Posted by Filip
    Is the car chassis getting hot as well? I know the trunk area of my Jeep warms up after I drive around for a little bit - it's accepting the radiated heat from the muffler.
    Also some GM vehicles suffer from "rain in the trunk" because of the way the muffler is mounted it produces condensation in the trunk. I don't remember which cars exactly, but they were all 4DSD
    Never be afraid to do something yourself. Remember - amateur built the Ark, professionals built the Titanic.

  8. #98
    Maximum Bitrate Bravellir's Avatar
    Join Date
    Dec 2003
    Location
    Porto, Portugal
    Posts
    741

    Maybe

    Quote Originally Posted by wizardPC
    well, dammit.

    Yet again, everything works in testing but not in real world situations. I had the computer running in the trunk for 2 hrs with the temp staying at about 81F, which was about 5F above ambient at the time. I was about to leave for Nashville (about 4 hours from here) so I wanted to kinda make sure this was gonna work, thats why the 2 hour test with the car stationary.

    I was all packed up, and went to go pick up my friend for the trip, and within 6 minutes the temperature had increased to 102F. I had to dismantle my false floor setup and unplug all the cables so I could hook everything up to my laptop. I left the carputer where it was in order to monitor temperatures.

    With the fans on or off, the temperature rises rapidly (about 2F/minute) when the car is moving at any speed. I initially thought that this was due to the exhaust vent being so close to the muffler, but even after driving for an hour whenever the car comes to a stop the temperature begins to drop if I have the fans on.

    on a side note, my laptop had ZERO problems with the heat. We even left it on in the trunk whilst we went to game 6 of the NHL playoffs in Nashville on saturday. The temperature in the trunk hit 143F, and when we got in the laptop had no problems at all.

    Maybe the air flowing around your vents creates some sort of suction cone behind it (like on a plane tails) so that vacuum doesnít allow air in.
    Ikea Case. Epia M10000.M1-ATX. 512 Mb. 2,5" 80 GB HDD. 7" Lilliput. BU-303 GPS. Sony Joystick.
    Status -->
    Lilliput Installed (not indash yet..)
    BraveCar 2.5

  9. #99
    Maximum Bitrate cadence117's Avatar
    Join Date
    Feb 2004
    Location
    Charlotte, NC
    Posts
    520
    any update on how this is going wizard?
    mobo $130 ; 150wOpus-$200 ; 256mb pc2700 -$10 ; 120gb HDD 7200-$70 ; Lilliput TS 7"-$265 ; USB LAN-Free AR ; Rikaline 6010 GPS-$34 ; ShuttleXpress-$37
    Total = $746....Carputer = Priceless

  10. #100
    Variable Bitrate nzKAOSnz's Avatar
    Join Date
    Aug 2003
    Location
    Christchurch - New Zealand
    Posts
    332
    Quote Originally Posted by Bravellir
    Maybe the air flowing around your vents creates some sort of suction cone behind it (like on a plane tails) so that vacuum doesnít allow air in.
    I'd have to agree with that......
    Hmm. if it wasnt for dirt/dust/rain/small rodents/birds/not so small rodents i would suggest turning one of the vents round

    In marine situations, they may be able to have the vents facing rearwards without any problems, but they wont be getting the same high speeds.

    Also - correct me if i wrong... but wont the airflow under the car be designed to create downforce, so in theory the air pressure should be less than ambeint.

Similar Threads

  1. To heat sink or not to heat sink ...
    By jnusaira in forum Newbie
    Replies: 5
    Last Post: 02-18-2004, 09:46 AM
  2. CPU Heat question: Which one would generate less heat?
    By kiztope in forum General Hardware Discussion
    Replies: 6
    Last Post: 02-12-2004, 02:14 AM
  3. Summer heat MP3Car trial complete
    By Moose in forum General Hardware Discussion
    Replies: 2
    Last Post: 07-10-2003, 12:25 AM
  4. help with ideas for a total homebrew mp3 car player
    By acidic in forum General Hardware Discussion
    Replies: 3
    Last Post: 07-12-2002, 11:02 AM
  5. COOLING THE CARPUTER
    By moahdib in forum General Hardware Discussion
    Replies: 33
    Last Post: 07-04-2002, 08:18 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •