What air humidity is considered normal in an apartment - the importance of the parameter and its standards. The influence of air humidity on human life Why is it colder for a person with high humidity

On the state of human health big influence provides the composition of the air. Depending on this parameter, its performance and emotional condition. One of the main indicators is the moisture content in air masses Oh. Its value decreases under the influence of various household appliances and heating systems. As a result, the body begins to age faster, the skin becomes dehydrated, and the risk of allergic reactions increases. In this article, we will look at Interesting Facts about air humidity and the importance of this characteristic for human life.

Human sensations when humidity changes

In the summer, excessive moisture adversely affects the condition of people. Air masses contain a large amount of moisture. As the temperature rises, they “absorb” water into themselves. A person can hardly breathe, his pressure may increase. In winter, in the process of decreasing temperature indicators, there is a decrease in humidity. The body begins to give off heat. The importance of humidity in human life cannot be overestimated.

If the ambient temperature is high, but the composition of the air masses is characterized by a low moisture content, the heat is quite easy to endure. With an increase in the values ​​of this parameter, a person may experience unpleasant conditions:

• body temperature rises;
• there is weakness and headache;
• pulse quickens;
• breathing becomes more frequent;
• there is profuse sweating.

In the presence of low temperature and high humidity, the human body, on the contrary, will supercool. In order for the living conditions to be comfortable, the percentage of moisture should be in the range of 30-60%. Otherwise, health problems may arise. The skin dries out, the body becomes dehydrated. Dryness of the mucous membranes allows the penetration of pathogenic viruses and bacteria.

Humidity plays a huge role in humans. A high moisture content leads to increased heat transfer. The body can quickly overheat. With a long stay in such an environment, immunity decreases. There is an exacerbation of heart disease, hypertension and atherosclerosis. This situation has a negative impact not only on human body. The appearance of dampness contributes to the accelerated reproduction of fungal formations. Buildings are being destroyed. Furniture and interior items deteriorate.

Effects of changes in air moisture content on furniture and household items

Not only our well-being depends on the composition of the air masses. The value of humidity in everyday life is subject to special consideration. Wood products react very subtly to changes in the percentage of moisture content. The condition of furniture, interior structures and musical instruments is deteriorating. At high humidity, wooden coatings are deformed and change their shape.

Dry air is no less dangerous for household items. This becomes especially noticeable when cold weather sets in and central heating is turned on:

• the furniture surface is cracking;
• parquet begins to delaminate;
• musical instruments are more difficult to tune.

Dry air has a negative effect on the state of artistic works of art. The paint peels off the surface of the paintings. That is why special devices are installed in the premises of large museums and exhibition halls that record changes in the composition of air masses.

Humidity and metrology

Water covers the entire surface of the earth. It is found in every living organism. The atmospheric composition includes 15,000 km3 of moisture. It consists of the following formations:

• water drops;
• snow crystals;
• water vapor.

The amount of water vapor affects the weather and climatic conditions. Oceans, seas, lakes and rivers cover a huge area. Despite this, the water content in the atmosphere over different parts of the planet is not the same. As a result of the movement of air in certain places on the earth's surface, the liquid evaporates faster than its condensation occurs.

Humidity in meteorology is characterized by several parameters:

• absolute humidity is understood as the density of water vapor contained in air masses;
• what is called the relative humidity of the air is the ratio of the pressure that water vapor creates at certain temperatures to the pressure of the vapors in a saturated state.

Relative humidity, in other words, indicates the saturation level of water vapor.

Methods for measuring moisture content

You can determine the moisture content using various measuring instruments:

• the composition of the psychometric device includes alcohol thermometers - "dry" and "wet". Using the temperature difference and a lookup table, calculate the relative humidity;
• the device with a weighing structure contains u-shaped tubes and an adsorbent. The test air passes through it. When the air mass is injected, the weight of the material increases or decreases. According to its change, the percentage of moisture is determined;
• hair and film hygrometers measure relative humidity;
• for ceramic devices, the resistance changes with an increase or decrease in air composition;
• in a condensation gyroscope, the temperature of the condensate on the mirror surface is measured. It is pre-cooled. The value obtained is compared with the temperature environment.

The humidity table is used when measuring moisture content with dry and wet bulbs. The temperature difference corresponds to the relative humidity value.

Folk omens

When the weather changes, the moisture content of the air mass changes. Folk omens, related to air humidity, indicate that if clear and dry weather is expected, the smoke from the stove will rise vertically. Before the rain, it spreads on the surface of the earth.

If present hard frost and dry air, firewood in the stove burns with a bright flame and burns out for a short time. With a pale, dim flame, a large amount of soot formed and insufficient draft, there is a high probability of a high moisture content in the air masses.

In the evening, when there is no wind, the air temperature drops. Above the ground you can often see vaporous moisture - fog. By his behavior, you can also judge the upcoming weather. According to the signs, the rise of the fog up indicates future rain. If it lies on the surface of the earth, dry weather can be expected. Night and morning fog in the valley, which disappears with sunrise, speaks of the upcoming good weather. The same forecast can be made in the presence of heavy morning dew.

If the moisture content in the air masses increases, many flowers experience shrinkage of the inflorescences. The smell of rowan becomes sharper. At coniferous trees branches fall. When the air is dry, they rise.

A person's tolerance for ambient temperature depends on the relative humidity of the air, that is, the percentage of the amount of water vapor contained in a certain volume of air to the amount that completely saturates this volume at a given temperature. When the air temperature drops, the relative humidity rises, and when it rises, it falls.

Relative air humidity of 40-60% at a temperature of 18-21 ° C is considered optimal for humans. The air, the relative humidity of which is below 20%, is assessed as dry, from 71 to 85% - as moderately humid, more than 86% - as highly humid.

Moderate air humidity ensures the normal functioning of the body. In humans, it helps to moisturize the skin and mucous membranes. respiratory tract. Maintaining the constancy of the humidity of the internal environment of the body to a certain extent depends on the humidity of the inhaled air. Combining with temperature factors, air humidity creates conditions for thermal comfort or disrupts it, contributing to hypothermia or overheating of the body, as well as hydration or dehydration of tissues.

A simultaneous increase in air temperature and humidity sharply worsens a person's well-being and reduces the possible duration of his stay in these conditions. In this case, there is an increase in body temperature, increased heart rate, respiration. There is a headache, weakness, decreased motor activity. Poor heat tolerance in combination with high relative humidity is due to the fact that, simultaneously with increased sweating at high ambient humidity, sweat does not evaporate well from the surface of the skin. Heat dissipation is difficult. The body overheats more and more, and heat stroke can occur.

High humidity is an unfavorable factor even at low air temperatures. In this case, a sharp increase in heat transfer occurs, which is dangerous to health. Even a temperature of 0 °C can lead to frostbite of the face and limbs, especially in the presence of wind.

Low air humidity (less than 20%) is accompanied by significant evaporation of moisture from the mucous membranes of the respiratory tract. This leads to a decrease in their filtering capacity and to unpleasant sensations in the throat and dry mouth.

The boundaries within which the heat balance of a person at rest is maintained already with a significant stress are considered to be an air temperature of 40 ° C and a humidity of 30% or an air temperature of 30 ° C and a humidity of 85%.

Patients are especially sensitive to high humidity. hypertension and atherosclerosis. There is an increase in the number of exacerbations of diseases of the cardiovascular system with an increase in air humidity.

The body's response to hypoxia

hypoxia - a condition that occurs as a result of insufficient provision of tissues with oxygen.

The reaction of the body to hypoxic exposure can be considered on the model of hypoxia when climbing mountains:

Initially, in response to hypoxia in a person, the heart rate, stroke and minute blood volume increase compensatory. Additional capillaries in the tissues open, which increases blood flow, as this increases the rate of oxygen diffusion;

there is a slight increase in respiration rate. Shortness of breath occurs only with pronounced degrees of oxygen starvation. This is explained by the fact that increased respiration in a hypoxic atmosphere is accompanied by hypocapnia, which inhibits an increase in pulmonary ventilation, and only after a certain time (1–2 weeks) of exposure to hypoxia, a significant increase in pulmonary ventilation occurs due to an increase in the sensitivity of the respiratory center to carbon dioxide;

the number of erythrocytes and the concentration of hemoglobin in the blood increases due to an increase in hematopoiesis;

the oxygen transport properties of hemoglobin change, which contributes to a more complete release of oxygen to tissues;

the number of mitochondria increases in cells, the content of respiratory chain enzymes increases, which increases energy metabolism in the cell;

behavior changes. For example, reduced physical activity.

The body's response to changes in atmospheric pressure

Atmospheric pressure is the pressure of atmospheric air on objects in it and on the earth's surface. Its distribution over the earth's surface determines the movement of air masses and atmospheric fronts, determines the direction and speed of the wind. Pressure plays an important role in the functioning of the body. On the well-being of a person who has lived in a certain area for a long time, the usual, i.e. typical for this region, atmospheric pressure should not cause a particular deterioration in well-being.

drops atmospheric pressure can lead to various pathological manifestations. First of all, they concern the cardiovascular system. So, under normal conditions, with an increase in atmospheric pressure, some changes in physiological parameters and sensations are observed: a decrease in heart rate and respiratory rate, a decrease in systolic and an increase in diastolic blood pressure, an increase in lung capacity, a dull voice, a decrease in skin sensitivity and hearing, a feeling of dry mucous membranes , increased intestinal peristalsis, slight compression of the abdomen due to compression of gases in the intestines. However, all these phenomena are relatively easy to tolerate. More unfavorable phenomena are observed during the period of changes in atmospheric pressure - an increase (compression) and especially its decrease (decompression) to normal. The slower the change in pressure occurs, the better and without adverse consequences the human body adapts to it.

With a decrease in atmospheric pressure, opposite shifts occur: there is an increase and deepening of breathing, an increase in heart rate, a slight drop in blood pressure, and changes in the blood are also observed in the form of an increase in the number of red blood cells. On the other hand, the nerve receptors of the pleura (the mucous membrane lining the pleural cavity), the peritoneum (the lining of the abdominal cavity), the synovial membrane of the joints, and also the vascular receptors respond to fluctuations in atmospheric pressure. The basis of the adverse effect of low atmospheric pressure on the body is oxygen starvation. It is due to the fact that with a decrease in atmospheric pressure, the partial pressure of oxygen also decreases, therefore, with the normal functioning of the respiratory and circulatory organs, a smaller amount of oxygen enters the body.

The reaction of the body to the action of electromagnetic fields (EMF) and radio frequency radiation

Experimental data from both domestic and foreign researchers indicate a high biological activity of EMF in all frequency ranges (Vyalov A.M., 1971; Schwan H.P., 1985, 1988; Semm P., 1980; Milham S., 1985). At relatively high levels of irradiating EMF, modern theory recognizes the thermal mechanism of the effect of EMF on a biological object, in which the electromagnetic energy of the external field is converted into thermal energy and is accompanied by an increase in body temperature or local selective heating of tissues, cell organs, especially with poor thermoregulation (crystalline lens, vitreous body). and others).

At a relatively low level of EMF (for example, for radio frequencies above 300 MHz, this is less than 1 mW / cm 2), it is customary to talk about the non-thermal or informational nature of the effect on the body. The mechanisms of action of EMF in this case are still poorly understood.

The effect of electromagnetic fields of radio frequencies on the central nervous system at an energy flux density (EFE) of more than 1 m W/cm 2 indicates its high sensitivity to electromagnetic radiation.

A change in the blood is observed, as a rule, at PES above 10 mW/cm 3 , at lower exposure levels, phase changes in the number of leukocytes, erythrocytes and hemoglobin are observed.

With prolonged exposure to EMF, physiological adaptation or weakening of immunological reactions occur.

The severity of the identified disorders is directly dependent on:

wavelength;

intensity and mode of radiation;

the duration and nature of exposure to the body;

on the area of ​​the irradiated surface and the anatomical structure of the organ and tissue.

Numerous studies in the field of the biological effect of EMF will make it possible to determine the most sensitive systems of the human body: nervous, immune, endocrine and reproductive. A.M. Vyalov (1971) also includes the hematopoietic system among the critical ones.

When exposed to EMF of low intensity from the side nervous system there are significant deviations in the transmission of nerve impulses at the level of synapses. There is oppression of the higher nervous activity memory deteriorates. The structure of the capillary blood-brain barrier of the brain is disturbed, its permeability increases, which directly depends on the intensity of exposure (Gigoryev Yu.G. et al., 1999). The nervous system of the fetus in the late stages of intrauterine development is particularly sensitive to electromagnetic effects.

A high intensity electromagnetic field can contribute to non-specific immune suppression, as well as the development of an autoimmune reaction, as a result of which the immune system reacts against the normal tissue structures characteristic of this organism. Such a pathological condition is characterized in most cases by a deficiency of lymphocytes formed in the thymus gland (thymus), which is oppressed by electromagnetic influence.

Studies by Russian scientists on the influence of an electromagnetic field on the endocrine system, which began in the 60s of the XX century, showed that under the action of an electromagnetic field, the pituitary-adrenaline system is stimulated, accompanied by an increase in the content of adrenaline in the blood and activation of blood coagulation processes. Changes in the composition of peripheral blood (leukopenia, neutropenia, erythrocytopenia) were also noticed.

Sexual dysfunctions are usually associated with changes in its regulation by the nervous and endocrine systems, as well as with a sharp decrease in the activity of germ cells. It has been established that the female reproductive system is more sensitive to electromagnetic effects than the male one. It is believed that electromagnetic fields can cause pathologies in the development of the embryo, affecting various stages of pregnancy. It has been established that the presence of contact of women with electromagnetic radiation can lead to premature birth and slow down the development of the fetus.

In recent years, data have appeared on the inducing effect of electromagnetic radiation on the processes of carcinogenesis (Pauly H., Schwan H.P., 1971, Semm P., 1980).

Prolonged contact with an electromagnetic field in the microwave range can lead to the development of a disease called "radio wave disease". People who have been in the radiation zone for a long time complain of weakness, irritability, fatigue, memory loss, sleep disturbance. Often these symptoms are accompanied by disorders of the autonomic functions of the nervous system. On the part of the cardiovascular system, hypotension, pain in the heart, pulse instability are manifested.

The main sources of the electromagnetic field are:

Power lines

Wiring (inside buildings and structures)

Household electrical appliances

Personal computers

TV and radio transmitting stations

Satellite and cellular communications (devices, repeaters)

Electric transport

Radar installations

Since the mid-90s of the last century, mobile communication devices have been one of the most widespread sources of both industrial and non-industrial effects of modulated EMF.

Studies carried out in 13 countries by the "case-control" method, within the framework of the International INTERPHONE project, found that when using devices cellular communication more than 10 years, the risk of developing gliomas increases statistically significantly. Based on these data, in May 2011, when considering the electromagnetic field of the radio frequency range as a risk factor for the development of oncological diseases, the IARC classified EMF created by cellular communication devices as a potential carcinogen according to the risks of developing gliomas in users with a long “more than 10 years of using mobile phones ( T. L. Pilat, L. P. Kuzmina, N. I. Izmerova, 2012).

The electromagnetic fields generated by personal computers are also seen as a potential risk factor for the health of users. Most of the data concerns computers equipped with video display terminals based on a cathode ray tube as a source of electrostatic and electromagnetic fields in the frequency range up to 400 kHz. According to available data, users have an increased risk of changes in the functional state of the central nervous system, the risk of developing diseases of the cardiovascular system, musculoskeletal system. A high incidence of pathology of the organ of vision was noted, in which the leading role is played, first of all, by myopia (24–46%) and functional changes in the visual system in persons with normal visual status.

The body's response to noise

We encounter vibroacoustic factors: noise and vibration every day in transport (cars, trains, metro, etc.), in industrial premises, in everyday life. It is known that in everyday life more than 30% of the population of large cities live in conditions of vibroacoustic discomfort. Noise has been called the "grey plague" of the 19th, 20th and 21st centuries. With the growth of labor productivity due to the creation of new machines and mechanisms, an increase in their power, the introduction of new technological processes, the noise is constantly growing.

From a physiological point of view noise they call all sorts of unpleasant, unwanted sounds that have a harmful, irritating effect on the human body, interfere with the perception of useful signals, and reduce its performance. From a physical point of view, noise is a random combination of sounds of different frequencies and intensities. Sound intensity, measured in decibels (dB), is used to assess human exposure to noise.

Depending on the level and nature of noise, its duration, intensity and frequency of sounds, as well as individual characteristics of a person, the effects of noise exposure can be very different.

Intense noise during daily exposure leads to the occurrence of an occupational disease - hearing loss, which manifests itself as a gradual loss of hearing. Initially, it occurs in the high frequency region, then hearing loss spreads to lower frequencies, which determine the ability to perceive speech.

In addition to a direct impact on the hearing organs, noise affects various parts of the brain, disrupting the normal processes of higher nervous activity. This effect occurs even earlier than changes in the organ of hearing. Typical are complaints of increased fatigue, general weakness, irritability, apathy, memory loss, sweating, etc.

Under the influence of noise, changes occur in the human organs of vision (the stability of clear vision and visual acuity decrease, sensitivity to different colors changes, etc.) and the vestibular apparatus; the functions of the gastrointestinal tract are disturbed; increased intracranial pressure, etc.

Noise, especially intermittent, impulsive, worsens the accuracy of work operations, makes it difficult to receive and perceive information. As a result of the adverse impact of noise on a working person, there is a decrease in labor productivity and accuracy in the performance of production operations, an increase in the number of defects, and prerequisites for the occurrence of accidents are created.

Approximate sound pressure levels for typical environmental sounds:

10 dB - whisper;

20 dB - noise norm in residential premises;

40 dB - quiet conversation;

50 dB - medium volume conversation;

70 dB - typewriter noise;

80 dB - noise of a working truck engine;

100 dB - loud car signal at a distance of 5-7 m;

110 dB - noise of a working tractor at a distance of 1 m;

120-140 dB - pain threshold;

150 dB - aircraft takeoff;

Approximately, the effect of noise, depending on its level, can be characterized as follows:

Noise level 50-65 dB can cause irritation, but its consequences are only psychological in nature. The impact of low-intensity noise during mental work is especially negative. In addition, the psychological impact of noise also depends on the individual attitude towards it. So, the noise produced by the person himself does not bother him, while a small extraneous noise can cause severe irritation.

At noise level 65-90 dB possible physiological effects. The pulse and blood pressure increase, the vessels constrict, which reduces the blood supply to the body, and the person gets tired faster. There are functional changes in the state of the nervous system (irritability, apathy, memory loss, sweating, etc.). With prolonged exposure to intense noise, significant changes in the ultrastructure of mitochondria (inhibition of oxidative processes), a violation of the functional structure of synapses are observed. Persistent and irreversible changes in the auditory analyzer develop (hearing impairment).

Noise exposure with level 90 dB and above leads to impaired functioning of the hearing organs, its effect on the circulatory system increases. At this intensity, the activity of the stomach and intestines worsens, sensations of nausea, headache and tinnitus appear.

At noise levels above 110 dB sound intoxication sets in;

At sound pressure 145 dB damage to the hearing aid can occur, up to a rupture of the eardrum.

The physiological effect of noise depends on three main parameters:

on the duration of exposure to noise;

on the intensity of the noise;

From the frequency characteristics, the more high frequencies prevail in the noise, the more dangerous it is (for example, a mosquito).

Acoustic impact is felt by every second person on the planet, so this is one of the global environmental problems.

The concept of air humidity is defined as the actual presence of water particles in a certain physical environment, including the atmosphere. In this case, one should distinguish between absolute and relative humidity: in the first case we are talking about the net percentage of moisture. In accordance with the law of thermodynamics, the maximum content of water molecules in the air is limited. Maximum allowable level determines the relative humidity and depends on a number of factors:

• Atmosphere pressure;
• air temperature;
• the presence of small particles (dust);
• the level of chemical pollution;

The generally accepted measure of measurement is interest, while the calculation is carried out according to a special formula, which will be discussed later.

Absolute humidity is measured in grams per cubic centimeter, which are also converted to percentages for convenience. With increasing altitude, the amount of moisture may increase depending on the region, but upon reaching a certain ceiling (about 6-7 kilometers above sea level), the humidity decreases to near zero values. Absolute humidity is considered one of the main macroparameters: on its basis, planetary climate maps and zones are compiled.

Determining the humidity level

(Psychometer device - it determines the humidity by the difference in temperature between dry and wet thermometers)

Humidity in absolute terms is determined using special instruments that determine the percentage of water molecules in the atmosphere. As a rule, daily fluctuations are negligible - this indicator can be considered static, and it does not reflect important climatic conditions. On the contrary, relative humidity is subject to strong diurnal fluctuations, and reflects the exact distribution of condensed moisture, its pressure and equilibrium saturation. It is this indicator that is considered the main one and is calculated at least once a day.

The determination of relative air humidity is carried out according to a complex formula that takes into account:

• current dew point;
• temperature;
• saturated steam pressure;
• various mathematical models;

In the practice of synoptic forecasts, a simplified approach is used, when the humidity is calculated approximately, taking into account the temperature difference and the dew point (marks when excess moisture falls in the form of precipitation). This approach allows you to determine the required indicators with an accuracy of 90-95%, which is more than enough for everyday needs.

Dependence on natural factors

The content of water molecules in the air depends on climatic features specific region, weather conditions, atmospheric pressure and some other conditions. Thus, the highest absolute humidity is observed in the tropical and coastal zones and reaches 5%. Relative humidity additionally depends on the fluctuations of a number of factors discussed earlier. During a rainy period with conditions of low atmospheric pressure, relative humidity can reach 85-95%. High pressure reduces the saturation of water vapor in the atmosphere, respectively lowering their level.

An important feature of relative humidity is its dependence on the thermodynamic state. The natural equilibrium humidity is 100%, which, of course, is unattainable due to the extreme instability of the climate. Technogenic factors also affect fluctuations atmospheric humidity. In the conditions of megacities, there is an increased evaporation of moisture from asphalt surfaces, simultaneously with the release of a large amount of suspended particles and carbon monoxide. This causes a strong decrease in humidity in most cities of the world.

Impact on the human body

Atmospheric humidity limits that are comfortable for humans range from 40 to 70%. Prolonged exposure to conditions of a strong deviation from this norm can cause a noticeable deterioration in well-being, up to the development of pathological conditions. It should be noted that a person is especially sensitive to excessively low humidity, experiencing a number of characteristic symptoms:

• irritation of mucous membranes;
• development of chronic rhinitis;
• increased fatigue;
• deterioration in the condition of the skin;
• decreased immunity;

Among the negative effects high humidity the risk of developing fungal and colds can be noted.

Air humidity is caused by the evaporation of water from the surface of the seas and oceans. absolute humidity is the density of water vapor per unit volume, and the percentage of the amount of water vapor in a certain volume of air to the amount of vapor that can saturate this volume at a given temperature is called relative humidity . Relative humidity is subject to diurnal fluctuations. This is primarily due to changes in temperature. The higher the air temperature, the more water vapor is required to completely saturate it. At low temperatures less water vapor is needed for maximum saturation.

Relative humidity and saturation deficit are important. These indicators give an idea of ​​the degree of saturation of the air with water vapor and indicate the possibility of heat transfer by evaporation. With an increase in moisture deficiency, the ability of air to receive water vapor increases. Under these conditions, heat will be released more intensively as a result of sweating.

For humans, relative humidity of 30-60% refers to the hygienic norm. Such humidity ensures the normal functioning of the body. This helps to moisturize the skin and mucous membranes of the respiratory tract and inhaled air, to some extent maintain the constancy of the humidity of the internal environment of the body. Air below 20% relative humidity is classified as dry, 71 to 85% as moderately humid, and more than 86% as highly humid. Humidity less than 20% is accompanied by evaporation of moisture from the mucous membranes of the respiratory tract. This leads to a decrease in their filtering capacity and a feeling of dryness in the mouth. The boundary of the human heat balance is an air temperature of 40ºС and a humidity of 30% or an air temperature of 30ºС and a humidity of 85%.

Depending on the degree of humidity in the air, the effect of temperature is felt differently. So, heat air in combination with its low humidity is tolerated by a person much easier than with high humidity. With an increase in air humidity, body temperature rises, heart rate and respiration increase, headache and weakness appear, a decrease in motor activity is observed, and heat transfer from the body surface by evaporation decreases (hydration and dehydration of tissues). Saturation of air with water vapor at low temperatures will contribute to hypothermia of the body.

Condensation, condensation of water vapor is their transition to a liquid state and the formation of water droplets. Condensation occurs when the air is saturated and supersaturated with water vapor due to its cooling. The products of condensation in the atmosphere are fog and clouds. Fog is a large amount of condensation products (water drops and ice crystals) in the surface layers of air. As a result of fog, visibility deteriorates, accidents and injuries occur. It contains dust, which makes it difficult to breathe.

Humidity is a measure that characterizes the amount of water vapor in the air. It is known that a person is 80-90% water, but not everyone realizes that the level of humidity in the atmosphere plays a significant role in human life.

The moisture content in the air can affect the general well-being of a person. The deviation of this parameter from normal values ​​can imperceptibly and gradually reduce human immunity, worsen the condition of the skin, increase fatigue, and this is especially negative for young children. We all notice how wet air good for health, and we strive to spend weekends or vacations relaxing by the sea, river or lake. The normal level of humidity is charitably reflected in our well-being. The optimum level is 45-65% relative humidity. Being indoors, we violate the natural balance of humidity, which is maintained by nature. And if in summer it is practically not noticeable, then in winter the difference in the relative humidity in the street and indoors becomes very significant. This is because when outdoor air is heated by a heating system, the relative humidity level drops, since the amount of moisture in the air did not change during heating, and the air's ability to absorb moisture increases in proportion to the temperature increase. As a result, moisture begins to evaporate at an increased rate from our body, which leads to dryness in the throat (and in general to dryness of the mucous membrane of the nose and respiratory tract due to constant interaction with dry air), dryness of the skin (primarily of the hands and face), dry lips.

excessive dryness:

chapping of the skin and lips, irritation of the nose, sore throat, breathing problems.

Symptoms of poor health excess moisture:

Allergic reactions. Problems with asthma, rhinitis.

Repeating day after day, this unfavorable situation can lead to undesirable consequences, namely:

Fatigue

Since dry air makes it difficult for oxygen to enter the body, staying in such an atmosphere causes a deterioration in well-being and fatigue. Doesn't help focus.

Disease of the mucous membranes

As a result of air dryness, the ear-throat-nasal and bronchial areas are affected. The mucous membranes of the upper respiratory tract, the so-called respiratory epithelium, lose their protective function. However, after the restoration of normal humidity, regeneration of the protective qualities of the epithelium is possible. The mucous membrane of the eye also loses its protective functions, opening the way for a bacterial infection. Dry air also causes additional irritation for those who wear contact lenses, since the accelerated drying of the lenses causes discomfort, and with prolonged action adversely affects the condition of the eyes as a whole.

Deterioration of the child's health

One of the main factors in caring for a child is air humidity. which he breathes. For healthy child humidity should be at least 50%, for a patient with a respiratory infection - at least 60%. If the air in the room is too dry, the child's mucous membranes dry up, stuffy nose and he often wakes up at night. Mucus accumulates in the cavities and becomes a breeding ground for bacteria. In an infant, the oral mucosa dries up and, as a result, pain may occur when sucking the breast.

Dry skin

The lack of moisture in the air accelerates the evaporation of water from the skin. She becomes dry. Prone to inflammation, rough and beginning to flake off.

Dust

Humidity "binds" dust. Dry air and, in addition, the heat generated by heaters, on the contrary, lead to the fact that dust flies throughout the room. This is especially contraindicated for asthmatics and allergy sufferers. At the same time, electrostatic charges on clothing and objects are increased.

Cracks in wood

If the air in the room is constantly dry, furniture, parquet and other wooden objects gradually lose their original appearance. They begin to shrink and eventually cracks appear. Out-of-tune musical instruments are also the result of insufficient air humidity.

drying houseplants

The lack of moisture leads to the drying out of many houseplants and flowers, the leaves of which are sensitive to moisture levels. Dry air can cause yellowing of the edges of the leaves, dropping of buds and flowers.

Thus, information on relative humidity and air humidification in the autumn-winter season is relevant for every person, both at home and, if possible, at work. If you have children, then maintaining an optimal level of humidity is your priority.

Keeping the humidity within the required range will ensure that problems with your health and the condition of your home are prevented.

The company "San Decor" offers to control the level of moisture