Wall ventilator with solar panels ПСС 102

The sun is an inexhaustible source of energy, which a person finds new application every year. These are toys powered by the energy of this star, solar-powered chargers that allow you to charge mobile devices where there is no possibility of connecting to the mains, backpacks are a permanent attribute of people who prefer outdoor activities, caps, straps, fountains, etc. All of them accumulate solar energy designed to serve people. You feel comfortable with them everywhere.

The worst disaster is to go somewhere in the heat by car. But, a solution has been found - this is a solar-powered fan. He eliminated the need to connect bulky fans to the cigarette lighter, because it works autonomously using solar energy. By attaching a compact fan to the side window of the car, the interior will be filled with the long-awaited coolness, leaving the cigarette lighter for connecting a DVR or charging a mobile phone.

Scheme of work

The technology of this gadget is absolutely harmless and environmentally friendly. The scheme of work is simple to the banal: sunlight, falling on the photocells, generates energy, which makes the fan spin.

The best part is that the free power source for these fans cannot be spoiled.

The solar panels are connected to a low-voltage fan that blows cool air through small intake holes, exhausting hot air from the car (through an open window).

You can attach it anywhere in the side window, adjusting so that it blew into the rear or front seats.

It is reliably protected from mechanical stress and weather surprises by car glass. Its dimensions and weight are small, and the price will not hit the family budget too much.

You can install it on any car and drive on a hot day enjoying the coolness, and even saving your car battery, because, unlike the same air conditioner, it does not need battery power. In addition to the fact that the fan will cool the interior, it will remove unpleasant odors from it.

It is clear that having installed such a gadget, one cannot rely on the temperature provided by the air conditioner, which uses high-pressure coolant to lower the temperature, due to which cold air is supplied to the passenger compartment with a powerful fan, but you will not have to ride in stuffy atmosphere with a fan. The disadvantage of fans powered by sunlight is that in cloudy weather they cannot perform their functions, as well as when they are installed on tinted windows. But, manufacturers are already working in this direction: solar fans have appeared with the ability to connect to a twelve-volt vehicle outlet, i.e. if there is a lack of solar energy, the fan may receive a small amount of energy from the car's battery to start working.

P O P U L Y R N O E:

Device for testing the limit values of voltages of radio components

When repairing, configuring, creating new circuit diagrams, you may need a device to check the values of permissible voltages and leakage voltages of transistors, diodes, capacitors and other radio components.

The article below presents a diagram of such a device based on a converter based on MC 1211EU1.

Auto Cooler Features

For the Auto Cooler fan, the figures will be as follows: 15x11x7cm, 380 grams and 110 UAH. The size of the solar panel is 5.5 x 5.5 cm, the length of the rubber tube is about 95 cm. The body is made of high quality black plastic.

Solar fans for cars, sometimes called solar fans, are able to reduce the air in the cabin to a temperature that is normally perceived by humans.

Air solar collector

Such a solar system is used to heat indoor air. By and large, this is an ordinary flat collector that is used to heat a room. Air passes through the absorber. The process can take place both forcibly and by natural convection. But the absorber with the installed forced ventilation looks more advantageous compared to the usual one. This is due to the fact that excessive flow turbulence increases its thermal conductivity, which is what we need to achieve. But something supernatural should not be expected from such systems. They can heat the air up to 17 degrees above the outside temperature. The advantages of such a solar system include its simplicity and reliability. With proper care, a solar air collector can last for over 20 years. But it is not recommended to use such a system as the main heating.

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Benefits

In addition to the possibility of gaining the desired coolness, the solar fan will keep the surfaces of the car exposed to the sun, primarily the dashboard, from cracks that inevitably appear if the car is under the scorching rays of the sun for a long time. As already mentioned, thanks to it, the car is cooled with clean energy from an environmental point of view. It also reduces the load on the air conditioner that drains the battery. Well, for whom the air conditioner is still a pipe dream - such a fan is a godsend. After all, those who drive old-style cars know firsthand that on hot days the salon turns into a real sauna. It is easy to install the fan, it is safe for others, versatile, and can work for a short or long time when parking.

Flat plate solar collector and its features

Such systems are among the most popular. Let's take a quick look at their design and how they work. We have an absorber - an element that absorbs solar energy. It has a special transparent coating and an insulating layer. The absorber connects directly to the heat transfer system. The surface color is usually black, which makes it possible to slightly increase the efficiency of the work.

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The pipes that are necessary for the transfer of the coolant are made of copper. If the collector is idle, the water can be heated up to 190 degrees Celsius. Naturally, the higher the intensity and amount of solar energy, the higher the efficiency of such a solar system. However, it is not uncommon for a flat solar collector to be equipped with optical devices to collect energy more efficiently. The absorbent must have a high thermal conductivity, so copper and aluminum screens are often installed.

Application area of autonomous solar fans

Despite the fact that while solar-powered fans have not yet become widespread, the benefits of them are difficult to overestimate. But, fans can help not only motorists. With their help, for example, you can cool the whole house. After all, its roof begins to heat up with the first rays of the sun, gradually the air of the attic becomes more and more hot, since both tiles and bitumen perfectly attract heat and retain it.Due to the lack of circulation, warm air does not rise. Therefore, the house begins to heat up. And no amount of thermal insulation can save you from the heat. An air conditioner that removes heat from the room is also not very effective, but is not able to cope with the huge amount of it accumulating in the attic. Besides, it is quite expensive.

The only way to stop the flow of heat from the attic is to install an exhaust fan in the vent on the roof ridge, which will allow air to circulate. A photovoltaic fan will be more efficient, providing ventilation when it is needed. In the morning, for example, the roof is not yet heated, there is no need for ventilation. As it warms up, the solar fan spins faster and faster, slowing down again in the evening.

There are also solar-powered bilge fans designed for ventilation of galleys, holds, latrines. They do not require an additional power source, they are easily mounted in the porthole, wheelhouse and deck. The most common ones are the mushroom fan - models 30002 and 30003, which differ in the presence or absence of a protective screen. In model 30003 it is present, therefore the body of the device is slightly higher.

It is needed so that dampness does not accumulate in the cabin, the air does not stagnate, and there is additional ventilation on a hot day.

The device is arranged simply: the body is made of stainless steel, a solar panel is installed inside, feeding a small fan. A completely autonomous fan works when there is light, and when there is no light, it stops working.

Many people use a mini fan on hot days, which is attached to the cap with a special clip. This device is also solar powered as it is self-contained. This wonderful accessory will be appreciated when the temperature rises above thirty degrees, and a pleasant coolness emanates from it. Its size is only 48x58 mm, the fan diameter is 73 mm, so it will be convenient for sports, fishing, travel, and simply for those who have to move around the city a lot every day.

The role of solar energy in the ventilation process

Having read the phrase "solar ventilation" in the title, most of our compatriots immediately imagine the roofs and facades of houses equipped with high-tech solar panels that generate electricity to power ventilation units. And they will be wrong, since solar ventilation is nothing more than the use of the effect of natural air convection to ventilate rooms. Solar ventilation was based on the principle of the "Trombus wall".

Historical background: The famous American architect and zoologist Edward Morse, back in 1800, discovered that a brick wall, heated during daylight hours, gives off much less heat to the atmosphere if it is covered with glass. In 1960, French designer Felix Tromba took advantage of the research results of E. Morse, revived the idea, improving its design and functionality. Since that time, the glazed wall for heating and airing houses has been called the "Trombus wall".

About application in Europe and Russia

As noted a little above, the solar air collector for heating in a number of European countries has been actively used for several years. But solar systems have found their application in industry. In particular, we are talking about the textile and food industries, where such a solution looks especially potential. So, by 2000, the total area of solar collectors was about 14 million cubic meters, while worldwide this figure reached 71 million m3.

In Russia, the situation does not look so good.The fact is that such systems allow heating about 100 liters of water per day with a probability of 80%. This is due to the small daily amount of solar radiation. The best regions for installing collectors are Transbaikalia, Siberia and Primorye, where the daily amount of solar radiation is higher than in the central part of Russia. In principle, there is a certain tendency for a slight increase in demand.

What are consumers saying?

We have already figured out a little about what a solar collector can be. Customer reviews are almost always different. Some are very happy with innovative systems, while others, on the contrary, regret the wasted money. But overall, the picture looks good. Approximately 75% of buyers say good things about the system. By the way, air collectors are rarely bought, at least in Russia, so nothing can be said about them. But vacuum solar systems have shown themselves to be reliable suppliers of heat to the house. But here it is worth noting that much depends on the specialists who install such complex and expensive equipment. If something is done incorrectly, then the efficiency of the system will be lower. In Europe, the situation is somewhat different. People are happy to install solar systems, since their prices are somewhat lower there, and the prevalence is higher. However, they are very rarely used as the main source of heat, since it cannot be argued that the best alternative to gas or coal is a solar collector. Reviews, by the way, suggest that it is very expensive and not always advisable.

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