Is it possible to direct the fan towards yourself

There is no definite answer

It turns out that there is no unequivocal answer to this humble question. Instead, there are two somewhat contradictory statements: the first is that it really doesn’t matter, the second is that it depends on the circumstances. If that’s not enough to confuse the developer, who just wants sufficient airflow and wants to make sure that the benefits of adding a forced cooling fan are not wasted, then I don’t know what else to say here.

Let me explain. I did a little research regarding forced air cooling using fans, and surprisingly found nothing not only in formal academic journals, but even in less formal student essays and projects. It was unexpected. All I found is that many gamers and overclockers have researched this problem.

There is nothing surprising about this, since they are the ones who put a lot of stress on their systems, increasing clock speeds and therefore temperatures. (And let’s not talk about the extensive use of liquid cooling here.). Their reports and blogs ranged from complex assumptions to actual tests.

Their conclusion: it doesn’t really matter since the difference, if any, is very small. Of course, it’s important to keep in mind that even for those who have done the tests on their hardware, the results are only valid for a specific physical hardware configuration and should not necessarily generalize to a wider range of hardware.

Why this might make a difference? Not because of the airflow path or the efficiency, but because of a very practical reason for the accumulation of dust on the grille (if any) and fan blades. Depending on the physical location of the fan and the path of the airflow, when the air is blown in from the front of the fan, dust to varying degrees accumulates on the grille and blades. As a result, airflow is reduced, from a few percent if dust settles on the edges of the blades, to double digits if the grille is clogged.

On the contrary, if the fan is at the unit outlet and pulls air through it, dust is more likely to accumulate on the internal components and will not obstruct air flow through the intake ports. But as with most design problems, this choice requires compromise: the same dust can settle on components that need to be cooled and form an insulating coating around them. This increases the thermal resistance between the component and the passing air and reduces the cooling efficiency in these places.

The doctor warned about the danger of the fan in the heat

On hot days, electric fans are literally swept off the shelves in stores. But one should use them with great care at home.

possible, direct, yourself

During hot summer days when the temperature rises up to 30 degrees and above many people prefer to be in rooms where the air is cooled somehow. Not everybody can afford to place air conditioner in the apartment, and even those who are ready, have to wait. in the capital, for example, specialists are busy with orders for two weeks ahead.

possible, direct, yourself

Inexpensive fans are alternative to conditioner. To tell the truth, it is hard to buy them now, too. there is a deficit in stores. But those who have already felt the relief of becoming the happy owner of a useful device in the heat should be cautious. Fans are not recommended when the air temperature is above 35 degrees.

Symptoms of heat exhaustion are similar to those of heat stroke

The doctor recommends using fans at temperatures no higher than 30 degrees and, if possible, in rooms with humid air. Also, during the summer heat you should drink plenty of water and take a refreshing shower more often, so as not to dehydrate your body.

Earlier “Doctor Peter” offered some tips on how to cool the room with a fan. You can put a basin of cold water in front of it and direct the air from the fan toward it. A wet cloth, such as a towel or an old sheet, spread on the floor or on a chair may also help. This way one can humidify the air in the room and decrease the temperature by several degrees.

At night, place the ventilator near an open window so that it blows air out of the room. In other rooms, you also need to open the windows.

How not to catch a cold in the summer?

Everyone is familiar with colds (acute respiratory infections). Despite all preventive measures, at least once or twice a year, people get sick with them during the cold and transitional seasons. The number of cases of acute respiratory infections during the summertime decreases significantly. But in summer it’s not uncommon to catch a cold. Hot weather and ways to escape the scorching heat or stuffiness indoors often provoke acute respiratory viral infections in people. To be ill in the summer, during vacations and vacations is not desirable at all. What you need to know not to catch a cold in the summer? How dangerous are air conditioners, fans, cold drinks and bathing in water? How to avoid falling ill? We’ve compiled all the information in this article.

How to keep your apartment and your room cool with a fan

Many residents of apartment buildings faced with the problem of cooling their homes in the hot summertime. As a rule, tenants who can afford it install expensive air conditioners that effectively cool the rooms of the apartment. However, there are other equally effective ways to cool rooms with available fans. In this article we will consider in more detail how you can cool your apartment and your room with the fan without significant costs and create a favorable microclimate in the house or apartment in the hot season.

There are several of the most effective ways to quickly bring the room temperature down to a more comfortable.

We need a basin of cold water, a floor fan, a plastic bottle of frozen water and a piece of gauze.

We take the gauze and thoroughly moisten it in cold water. After this it is necessary to throw moistened gauze on the fan. To do this, you should dip any of the 4 ends of the gauze into a basin of cold water that will stand next to the fan. After that, turn on the fan, and the room air along with the circulation will begin to cool the room. For maximum effect put a plastic bottle with ice or very cold water in the basin. Depending on the diameter of the fan and the height of the installation, you will need to choose the size of the gauze.

We offer you another effective method to help answer the question how to cool yourself and the room without air conditioning? For this We need a floor fan and a large water tank. It is best to use cool water, and the larger the container for it, the faster the room will be cooled. We install the fan in the desired position and put a bucket of water in front of it. The water will evaporate while intensely blowing warm air into the room. And thus the temperature in the room will fall by 2-5 degrees.

Best fan placement to move air through the house

Recommendation. Watch the amount of water in the tank and periodically top up to the top level.

With a floor fan you can effectively cool rooms in the evening or at night. To do this, turn the fan in the direction of the window. That way, hot air will escape from the rooms. In the other rooms we have to open all the windows. In this case we get a draught when the inflow of fresh air from the street will push the hot air with the fan outside. Thanks to this, the temperature in the rooms will be equal to the cooler outdoor temperature.

We will need a floor fan and 1.5-2 liters of empty plastic bottles. We pour cool water into plastic bottles and freeze it. After that we put bottles with frozen water in each room. In the living room we install a floor fan, which will cool the room more effectively. When the water melts, you should put the plastic bottles back in the freezer and repeat the procedure again.

It is possible to direct the fan toward ourselves

Summer is not only a vacation season, trips to the sea or other bodies of water and summer vacations. This time of year is also accompanied by very warm, and sometimes unbearably hot weather. Numerous publications are written about how harmful high temperatures are for people, so it is understandable that most people want to make the microclimate in their home more or less comfortable in the summer. Of course, the ideal in this case is to install air conditioning, but it is quite expensive and not everyone can afford. Therefore, in the summer, other methods of cooling the air in the house are quite in demand.

First, let’s look at how exactly our body cools down in hot weather. There are four methods of heat transfer from the skin to the environment. Convection (transfer of heat to the moving air), conduction (heat transfer to the stationary, cooled air), evaporation (cooling by evaporation of sweat) and radiation (radiation of infrared radiation from the body). In the home it is possible to use two methods. It is possible to cool air (that is the job of an air conditioner) or to make it move and take heat from the body. Of course you can use and evaporation, such as pouring water or taking a cool shower, but it is a temporary measure and does not affect the microclimate in the house. Therefore, in the absence of air conditioning, it is necessary to increase ventilation in the house, which will cause the necessary air movement. But it is worth to do it right.

The most common household appliance that is used to create air movement is a fan. However, no matter how pleasant it is to sit under a stream of air from it in the summer heat, you should not do so. Such “blowing” is fraught with colds and immunity decline. It is better to install the fan so that it causes a slight movement of air throughout the room, for example, put it in a corner and send the air flow along the diagonal of the room. Of course you can hardly achieve a quick feeling of coolness by such a method, but it will be more comfortable than when you are outdoors.

Two fans can be used to make the air movement more perceptible. one blows air into the street through the window, the second stands near the door or opposite the first at the other end of the room and blows air in the same direction. This ventilation direction is used during daytime hours when the air temperature outside is considerably higher than the room temperature. In the evening or morning coolness, you can change the direction or simply do not turn on the fans. The cool air will enter the room by itself. And even if there are no fans, the same principle should be used to air the rooms in the summertime. open windows in the morning and evening or at night and close them tightly in the daytime. A sluggish draught from a ventilator will not save you from the heat, but will only warm the air in the room additionally.

The main thing is to open the windows at least at some time of the day for ventilation. Ventilation in blocks of flats is practically not working during the hot days, which leads to poor air exchange and accumulation of products of breathing in the apartment. Use of special small fans installed in ventilation holes or at least turning on an ordinary kitchen hood for a couple of hours a day will help to partially remedy this situation.

It is possible to use the fan more effectively and with the windows closed, making it “chase” the cooled air. For this purpose it is possible to install or put some capacities with a coolant behind the fan blades, which can be put into cooler bags and are widely available. If you do not have them, you can use bottles of frozen water to cool the air. Hanging wet towels around the house or apartment, contrary to popular belief, is ineffective. it is necessary to cover the whole room with them to cool the air even slightly. The same can be said of spraying cold water from a spray bottle. It will only have a temporary, very short-lived effect. In addition, when the windows are completely closed, it will cause a significant increase in humidity in the house, which can have a negative impact on furniture and coatings, and can also be a trigger for diseases such as bronchial asthma.

Of course all these methods will not create the same comfort in the apartment as using air conditioning, but the correct ventilation of the house at high air temperature will create the necessary movement, which will greatly contribute to the removal of heat from the human body and enable more or less painless to survive the hot season.

– We recommend to visit our section with interesting materials on similar subjects “Disease Prevention.”

Consequences of hypothermia

Overcooling is fraught with the development of not only the classic cold, but also complications, which include bronchitis, tonsillitis, pneumonia, etc.д. Signs of illness from air conditioning and cold air will be:

  • acute rhinitis inflammation of the nasal mucosa;
  • tonsillitis inflammation that occurs in the palatine tonsils;
  • Laryngitis is an inflammation of the larynx, accompanied by hoarseness and hoarseness of the voice;
  • Pharyngitis inflammation of the laryngeal mucosa.

Inflammatory processes in mucous membranes in 80% of cases are provoked by viruses. However, if treatment is ineffective, the disease can also join bacterial infection.

To avoid severe hypothermia and drying of the nasal mucosa, it is necessary to follow certain rules of operation of cooling devices.

A direct path to maxillary sinusitis

Of course, fan use will not immediately cause maxillary sinusitis. But can lead to this disease, especially if you are not vigilant at the first signs of the beginning of the disease. If there are provoking factors, such as a history of maxillary sinusitis, deviated septum, chlamydia in the body, the presence of allergies, untreated flu. then the fan on at night could easily provoke a runny nose, and from it could already go inflammation of the maxillary sinuses. They are not as easy to cure as the common cold, and the consequences can be very severe.

How to set the cooler speed?

There are two ways to adjust the speed: hardware or software.

By the first I mean to cut in a special device between the cooler and the power supply. It can be a simple resistor or speed controller.

A more advanced solution is a re-obas (fan controller) installed in bay 5.25, that was previously used for CD/DVD-ROM.

Hardware control is possible with 3-pin, 4-pin and Molex connections.

Software speed changes are available in the BIOS as well as in the operating system.

Go to BIOS setup menu. Under Power, choose Hardware Monitor, Temperature or any similar item, set the desired speed in the settings. In UEFI you can adjust the speed with the curve. Don’t forget to save the settings and reboot the computer.

  • Q-Fan Controller
  • SpeedFan
  • Corsair Link
  • MSI Afterburner
  • NoteBook FanControl
  • ZOTAC FireStorm
  • GIGABYTE EasyTune
  • Thinkpad Fan Controller
  • GIGABYTE i-Cool

Let’s watch by the example of SpeedFan software. Main Menu shows fan speed and temperature inside the chassis. Uncheck “Auto-tuning of fans” and set the speed in percent of maximum speed. There you can also set the temperature. Ideally the temperature should not rise above 50°C. You can do the same in other similar apps.

How can the thoughtless use of air conditioners and fans turn out?

Thoughtless use of these gadgets can have unpleasant and painful consequences for users.

During the raging anomalous and seemingly never-ending heat wave that even dried up a waterfall in the Leningrad region, the EMERCOM has again asked St. Petersburg citizens to prepare for another round of hellish “hell. City dwellers use climate control technology more often. First of all it is fans and conditioners.

Each of the devices has its own characteristics, and it is better not to make a hasty choice in favor of a single variant. it is better to get acquainted with the advantages and disadvantages of each of them first. Also, air conditioners and fans are different, and can be equally harmful or beneficial.

Tamaz Mchelidze, the chairman of St. Petersburg Medical Chamber and the head doctor of Medi system of clinics in conversation with the correspondent of NEVSKIYE NOVOSTEES informed that if to choose between a fan and an air conditioner the fan is the least harmful. The air conditioner is much more dangerous.

“With the fan you have to observe the rule: not to let it blow at one point. You need to have the fan spinning, then it’s not dangerous. The air conditioner is dangerous because the air flow from the air conditioner can cause cramps in different parts of the body. this will lead to a problem. You need to stay as far away from the air conditioner as possible,”. said the specialist.

The expert notes that if a person gets a cold sore, it means there is a spasm somewhere and the blood vessels are blocked. Then it is fraught with inflammation. As a rule, it is connected with the nerve endings: a person can have difficulties turning the neck, can feel pain in the lower back, back. But a fan can’t make a person’s throat sick.

“If a person has already had a cold, which means that viruses and germs in him have become more aggressive, the immune system has weakened, then the cooling can cause a sore throat Attention Tamaz Mchelidze You can easily get a sore throat if you drink ice cold beverages in hot weather. In the heat do not drink icy drinks, do not sit under the air conditioner and the fan, which blows continuously only on you”.

Vladislav Zhemchugov Doctor of Medicine, immunologist of the Health Clinic noted that overcooling with cold air in hot weather can cause various kinds of colds in the first place. If it blows somewhere for a long time, vasospasm occurs there, the local immunity cannot cope, and herpes can pop up, what is called a cold.

“At the moment of blowing hypothermia, there is a great chance of getting herpes zoster, varicella virus. painful unpleasant manifestations. As a doctor, I can see that when the air conditioner blows on a person directionally, it can threaten pneumonia if it blows into the chest. If the air blows into your cheek, you may get an inflammation of the trigeminal nerve. also a painful thing. You might get a runny nose,” warned Zhemchugov.

The expert concluded that the air conditioner should be located so that the direction of the jet is to the ceiling, but not on the person. Then, with the right direction, you can safely sleep with the air conditioner on. The fan is less dangerous, the main thing is not to have a constant stream of air at one point. use the rotation function.

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