Then the outside temperature reached a temperature cold enough so that the refrigerant in the last unit would no longer vaporize, so that system was inoperative too. One especially cold evening one of the two remaining units failed. About this time of year, with temperatures similar to what we are experiencing now, one system had been down for maintenance leaving two A/C systems, because the third was certainly not needed in the winter. (This can for an example be tested on the surface of a CRT operating in a dry environment.)ĭecades ago the IBM mainframe where I worked was cooled by three separate air conditioning systems. The rest of the surface will still be charged. Ie, if the operator touch something that is having a static charge, then only the spot that were touched will be discharged into the operator. Since if it has accumulated on an insulator, then it can’t easily move over the insulators surface either. As long as it actually has a sufficiently conductive path to take.Īnd also, the accumulated charge on a surface won’t discharge all at once either if it were to touch any connection. Static does conduct away just like any other applied charge. The “Lesson learned static does not conduct away like electrical power.” is incorrect. All of these aren’t typically conductive and will yet again stop the static from easily discharging. (since the paint often isn’t conductive.)Īnd even an exposed metal piece can still easily build up a layer of oxide, oil film, or just a layer of dust. In regards to grounding in industrial environments, painted metal surfaces will not typically discharge any accumulated surface charge. When we chill air, the relative humidity increases. But most high speed lines are differential and won’t really be effected by our static seeping in. It could theoretically introduce some more noise to various signal lines. So one doesn’t have to worry about it burning anything up. Not that static buildup as a lot of power in it to start with. If static comes in and adds to one or the other side, our source will simply regard it as a change in our load and still keep regulation.) (Our loads constantly pull it down, and our source constantly pulls it back up. This ensures that any static that builds up constantly gets shunted away to ground or our power rails.Īnd our power rails tends to be fairly rock solid in regards to voltage compared to our ground. Since all traces within a computer is either connected to a power line, or to ground. That dry air can cause static buildup is true.īut for an assembled and grounded system, static buildup is rarely problematic.
Posted in computer hacks Tagged air conditioning, cooling, overclocking Post navigation This is making us think about just 3D printing a faceplate for our air conditioner to hold a few Raspberry PI boards. Still, the way they did it has the advantage of being simple and reversible. An alternative would be to use a double loop as a nuclear reactor does, with a water loop on the CPU and the refrigerant loop in the air conditioner. We wondered though, if you could tap into the cooling loop and actually push refrigerant through a water cooling block.
We really liked the thermal interface test rig, which they used to test interface media. The temperatures stayed cool even at high speeds. With the air conditioning running, they disconnected at least some of the stock fans. Admittedly, it isn’t any worse than plunging your computer in liquid nitrogen, and we’ll admit that air conditioning units are made to keep large areas cold and work at high duty cycles. It doesn’t actually interface with the CPU cooling block, instead it just forces cool air into the case and this tends to cool everything inside. The trick is to create a simple duct to attach to a 5,000 BTU air conditioner. They think they haven’t hit the ceiling yet, and got their AMD Ryzen 8-core processor up to 4.58 GHz.Īn advantage of forcing air from an air conditioner is that the air forced into the system is quite dry and clean. is living proof as they modded a computer case to use a window air conditioner for overclocking a computer. We never insist that a hack be practical.
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