Before plunging into overview of the uninterruptible power supplies (UPS) and particularly 24 volt dc power supply, it is first important to understand the generation and distribution aspects related with the electricity of any region as the electrical supply and demand varies from one region to another. Electricity can be derived in a satisfactory manner from both renewable as well as non-renewable sources of energy...
Pay attention! This article is not of a recommendational character, nor it gives any advice concerning the way you should use your equipment. Almost every cooling method described below contradicts the rules of normal exploitation of your stuff and can lead to serious damages of your system and even to bodily harm! All the actions taken by you are the subject of your own responsibility, not a single word in this article should be considered as an encouragement to applying any of the extreme cooling technique.
Most computers are cooled with the use of fans or heat sinks and it's something that the majority of computer users never really think about. But, as some computer enthusiasts discovered it was possible to over-clock (adjust the CPU to work faster than the manufacturer settings) their computers, it became necessary to find other ways to keep their computers cool. Over-clocking a CPU greatly increases the amount of heat generated by the circuitry and the usual methods are inadequate. Many methods have been devised from fairly inexpensive water-cooling at around $150, to super crazy expensive liquid nitrogen that costs thousands.
Water-cooling is the most affordable method and kits include a CPU block, radiator, water pump and piping. Larger systems may include a water reservoir and more blocks for other components such as graphics cards and additional radiators for increased cooling.
The location of the radiator makes a lot of difference in the effectiveness of the cooling system. The purpose of the radiator is, of course, to draw heat from the water passing though it. A good place would be outside in an open area or inside a refrigerator or freezer. Small areas, such as a computer case, or other low airflow locations would not be recommended.
If you locate your system near a window or an outside wall, it is possible to cut a few holes in the wall to pass the piping through and locate the radiator outside. Painting the radiator black and placing it in a shady spot can help to keep it cool.
If you live in an area where temperatures get to freezing, then you need to take some additional precautions to make sure your radiator and pipes don't freeze. Add some normal antifreeze to your system just like you do for your car. Be sure to read the label on the bottle to assure that it won't corrode your pipes, heat blocks or radiator.
Another thing to consider with freezing temperatures is the difference between the heat coming off the CPU components and the cold tubing. It is quite possible to get condensation forming on the heat blocks and pipes. Dripping water is certainly not good for your hardware.
The best way to prevent condensation is to immerse the radiator in a tank filled with mineral water. However, this isn't very practical for most people. The next best solution is water resistant insulation gel. Before wiring everything up, cover the places at risk from condensation and then apply the insulation gel directly to the printed circuit board (PCB). The gel will protect it from any moisture.
Another kind of water-cooling is thermoelectric. This type involves the use of a device called a Peltier. This is a small electronic unit that gets extremely cold on one side and the other is hot. Combining these with the radiator can provide extra cooling. It is also possible to place them inside the CPU provided there is an adequate method to dispel heat from the hot side of the unit. Peltiers require their own power source, however, and additional power supply for these devices can be expensive.
The least practical method of providing additional cooling is the use of liquid nitrogen or dry ice. If used properly this method can cool components to below -100 C and under. This will allow computer chips to be over-clocked to super fast speeds. Liquid nitrogen and the like are very dangerous to handle and extreme care must to take to avoid injury to yourself and your components. These systems are also tremendously expensive and hard to buy.
Remember to use great care when setting up any kind of water-cooling system for your computer. Moisture is as bad for them as extreme heat.