Using the Chimney Effect to Drop Passively Cooled PC Temperatures
This is not only great for a chimney, but also a useful principle if you seek to cool something like a PC in a more passive manner. The main question is of course how much of a ‘chimney’ you need to see real effects for something like a typical water-cooled CPU’s radiator, as demonstrated by [der8auer] in a recent video. Although there’s a lot of fun physics behind the stack effect that you can run the numbers on, the more practical demonstration here using 3D printed funnel segments for the radiator and various thermometers provides a very hands-on feeling for what you can expect from this approach.
- ▪This is not only great for a chimney, but also a useful principle if you seek to cool something like a PC in a more passive manner.
- ▪The main question is of course how much of a ‘chimney’ you need to see real effects for something like a typical water-cooled CPU’s radiator, as demonstrated by [der8auer] in a recent video.
- ▪Although there’s a lot of fun physics behind the stack effect that you can run the numbers on, the more practical demonstration here using 3D printed funnel segments for the radiator and various thermometers provides a very hands-on feeling
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| Original publisher | Hackaday |
| Canonical URL | https://hackaday.com/2026/07/31/using-the-chimney-effect-to-drop-passively-cooled-pc-temperatures/ |
| Publication time | Fri, 31 Jul 2026 08:00:10 +0000 |
| Retrieval time | 2026-07-31T08:02:33.931Z |
| Last seen | 2026-07-31T08:02:33.931Z |
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Opening excerpt (first ~120 words) tap to expand
Using The Chimney Effect To Drop Passively Cooled PC Temperatures No comments by: Maya Posch July 31, 2026 Title: Copy Short Link: Copy The stack effect — also known as the chimney effect — is the basic principle that hot air not only rises, but if guided through a tube, the rising hot air will create more pressure that will effectively draw air more effectively into the tube. This is not only great for a chimney, but also a useful principle if you seek to cool something like a PC in a more passive manner. The main question is of course how much of a ‘chimney’ you need to see real effects for something like a typical water-cooled CPU’s radiator, as demonstrated by [der8auer] in a recent video.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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