[PConline Information] Su Shi: "I would rather eat without meat, can not live without bamboo." However, in this kind of weather, "it would rather have no meat and no air conditioning," is our voice. According to Xiaobian personal guess, 80% of the people who are currently looking at this article should have air-conditioning. When we enjoy the coolness brought by the air conditioning, we must always remember those hard times without air conditioning. In addition to areas where the weather is already cool, there are still many people in some economically backward areas who do not have access to air conditioning and sweat in the hot summer sun.
However, the uniqueness of human beings is that, no matter how hard the conditions are, to ensure their survival, they will use wisdom to make themselves better. No air conditioning? Then we made it ourselves. Today Xiao Bian has collected several kinds of civil DIY “air conditionersâ€. We don’t consider practicality first. Let’s take a look at where they are.
This air-conditioner, named Eco-Cooler, originally appeared in Bangladesh, but it is relatively easy to draw and produce. Recently, it has had a relatively high exposure rate in domestic media.
To make such a simple air conditioner, only some waste plastic bottles, a wooden board or foam board, and tools commonly used in daily life are needed. First, cut off the bottom of the plastic bottle, and then cut off the top of the bottle cover (in fact, it seems easier to unscrew the bottle cap).
A number of holes slightly larger than the diameter of the bottle cap are drilled on a board or a plastic plate prepared in advance, and these processed bottles are inserted forcefully.
That's right, it's done. Put it on the window, it becomes a simple "ecological air conditioning."
It does not seem to be very reliable, but this approach is scientifically justified. It uses a "throttling effect," according to which, when air flows from the bottle through a relatively narrow diameter bottleneck, When it comes to resistance, the pressure drops significantly and the temperature decreases slightly.
Popular Science Time: The throttling effect, officially known as the Joule-Thomson effect, refers to the fact that the fluid does not change before and after the throttling expansion process. Its important application in the industry is to let the fluid throttling through the throttling valve to obtain Low temperature and liquefied gas. From the perspective of physical energy conversion, each gas has a conversion temperature when the gas pressure is constant. When the ambient temperature is lower than the conversion temperature, the gas will always produce a throttling cold effect after throttling.
The room temperature is generally not higher than the conversion temperature of air, so throttling the air at room temperature will lower its temperature. According to this principle, we can easily see that this kind of cooling must be achieved through the "air conditioning" of the air flowing from the outside to the interior. So if there is no wind, the effect will be greatly reduced.
According to the actual measurement results of some netizens, the cooling effect of “eco-air conditioning†is not as magical as it is on the Internet because actual conditions are difficult to achieve to an ideal standard. However, it can at least shelter the sun while ensuring air circulation. It should be people. Another important reason to feel cool, blinds have a similar effect.
The following "air conditioner" is more expensive to make. The materials you need are: a covered plastic bucket, a circular fan with a slightly smaller diameter than the bucket, a PVC rigid pipe, and some ice cubes or water.
First, drill holes. Drill 3 holes with a diameter slightly larger than the PVC pipe in the side wall of the plastic bucket. Then insert the pipe into the hole.
A circular area slightly smaller than the diameter of the fan is cut out of the lid.
Then put ice or water in the bucket, close the lid, put the fan head down on the lid, and turn on the fan.
Enjoy the cool breeze! Although this kind of "air conditioner" costs slightly more than the previous one, but because of the fan and ice cube blessing, the effect will be more reliable. It is equivalent to a small air-conditioning fan. The trouble is that it often requires adding water or changing ice cubes.
If you feel that it grows too LOW, you can spray it with paint, beautify something, and of course it will take some money.
The last "air conditioner" came from a Taiwanese uncle. In the hot summer days, the uncle saw the security of the downstairs was unbearable. He planned to use a fan, brass and a water pump for a fish tank. He was given a DIY equipment.
The first step was to purchase materials, and the uncle almost ran across Taipei to buy the most important copper tubes in a shop similar to a hardware store (the days without X-bao were still very difficult).
Start DIY! First, remove the front grille of the fan, roll the copper tube into a suitable shape, and fasten it with a cable tie.
Then cut off the excess part of the copper tube and use pliers to open the incision so that the water can pass through.
Use plastic hoses to connect copper pipes and water pumps, and put the water pump in ice water.
Turn on the fan and pump! But finally the downstairs security is too much trouble, confiscate this gift ~
If Xiao Bian is not mistaken, it seems that some people have said that this technology is called "space water cooling"?
Although it is called DIY air-conditioning, these "air-conditioning" cooling effects and real air-conditioning is still not comparable, but DIY Well, playing is happy and creative, you have seen any interesting DIY air-conditioning it?
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