Carbon dioxide.
Impact on man of increased carbon dioxide in the inhaled air

In many industries, there is still an effect on a person high concentrations of carbon dioxide (carbon dioxide) very noticeable. Previously, these were people who worked in fermentation shops, vegetable stores, in sanatoriums with narzanan baths in an atmosphere enriched with carbon dioxide, for 6-8 hours. Now, with the development of space technology, underwater research of the shelf of the seas and oceans, in other similar conditions, a person has to To continuously be in a closed space with an increased content of a very sensitive to the body of carbon dioxide weeks and even months.

The biological activity of this final product of the metabolism of a person who plays an important role in the organism homeostasis, each of us has repeatedly felt on himself. For example, being over an hour in a stuffy room with a large crowd of the people (in the cinema, at the lecture, next to the intensive smokers), and then coming out for fresh cool air, we have at least dizziness, or even sharp headaches, nausea and semi-resistant state. This phenomenon of "reverse action of carbon dioxide" was obtained in the experiment and described in detail in 1911 P. M. Albitsky. This occurs due to the transition from the atmosphere with an elevated content of carbon dioxide (hypercapinia) into normal atmospheric air (normal) and is due to the inertia of compensatory "anti-injection" mechanisms.

In providing human life conditions, the question of the adequacy of the gas environment of the work performed is often particularly sharp. That is, it is required in sealed objects to maintain such levels of carbon dioxide that would not have a negative impact on the performance and health of people. The actual data on the effect of the increased maintenance of carbon dioxide on the central nervous system is based on the maximum permissible concentrations (MPC) in closed inhabited rooms of various purposes. Currently, most researchers believe that the long-term provision of a high level of human performance under the conditions of a hypercapnic medium is possible only at MPCs within 1% and lower. Such a concentration of carbon dioxide, in particular, is the limit, according to American scientists, in the compartments of nuclear submarines and in the cabins of spacecraft.

Many years of experience in observing people, long-term in a closed space, shows that they may have been in an atmosphere with a 3% content of carbon dioxide for many hours and even several days if its increase in the air is gradually, and the physical activity of a person is at the same time minimum. But in such conditions, mental and physical performance is dramatically reduced, the symptoms of the adverse action of carbon dioxide continue to increase.

Or can the human body adapt to the hypercapnia? Partially yes, maybe, but within no more than 1-1.5% concentration. At the same time, the excitability of the respiratory center decreases, the fan function decreases, the shifts of the blood system decrease. But with prolonged action on the body of the hypercapnic gas environment, along with the inclusion of compensatory reactions, there is a transition to a new level of functioning of many systems to ensure livelihoods. The consumption of oxygen is reduced, heat product flow decreases, the capacity of the vascular channel is reduced, the heart rate is slowed down. With apparent external well-being, the reactivity of the body is reduced to a number of external influences, especially requiring a rapid reaction of the cardiovascular system, increased oxygen support. A distinctive feature of long-term hypercupinia is a long negative aftermath. Despite the normalization of atmospheric respiration, in a long time, changes in the biochemical composition of blood, a decrease in immunological status, physical stability and other external influences are observed.

Consider in more detail the mechanisms of affecting carbon dioxide per person. This biologically active gas in the body binds to blood, enters a buffer reaction with hemoglobin, joining the free amino groups of its polypeptide chains and forming carbohemoglobin. Most of the carbon dioxide (about 80%) comes into contact with sodium, potassium and calcium cations, forming a blood bicarbonate system. The amount of carbon dioxide in the middle-weight human body is about 130 liters, in the hypercapnic medium it increases sharply: approximately 0.7 liters with an increase in the partial pressure of carbon dioxide in the inhaled air for each millimeter of the mercury pillar.

At high carbon dioxide concentrations, the frequency and depth of breathing increase. Especially sharply increases the ventilation of the lungs when the muscular work performed in the conditions of hypercapnia: 10-12 times or more. This is far from indifferent for the human body, complex, and often paradoxical reactions. At very large concentrations of carbon dioxide in the inhale air, the bronchial is due to the concentration, and at a concentration above 15% - the spasm of the voice slot.

Changes in the composition of blood with long-term hypercaps are to increase the number of erythrocytes, leukocytes and hemoglobin content, increasing blood viscosity, mobilizing uniform elements from blood depot. In the future, these mechanisms are substantially oppressed. There is a decrease in blood sugar content, glucose disposal is reduced. There is a decrease in glycogenic liver reserves, reduced glycogen content in the brain. The calcium content in the blood is reduced, and the demineralization of bones is enhanced, protein metabolism and residence of macroeergic phosphate compounds are slowed down. The content of ATP in cerebral tissue is especially significantly reduced. Increasing the content of carbon dioxide in the inhaled air initially causes heartbeat, then, on the contrary, - bradycardia. Due to the increase in blood viscosity, the load on the heart is significantly increased.

The main changes occur, of course, in the central nervous system, and they are carried by phase character with hyperkapin: at first an increase, and then reducing the excitability of nervous formations. The deterioration of conditionaloreflector activity is observed at concentrations close to 2%, and with a carbon dioxide content of 5-6%, a significant decrease in the amplitude of the caused brain potentials, desynchronization of the spontaneous electroencephalogram rhythm with the further oppression of the electrical activity of the brain occurs.

Outwardly, people have hypercups characterized by the emergence of a number of subjective symptoms, namely headaches, dizziness, feelings of breakdown, irritability, sleep disorders. Reducing performance accurately correlates with an increase in the percentage of carbon dioxide in atmospheric air. When this indicator approaches, the motor reaction time increases to 1%, the accuracy of the restoration response is reduced; With 1.5-2%, the mental human mental activity begins to change qualitatively, the differentiation, perception, RAM and allocation of attention are violated. With long-term operation in an atmosphere containing 3% carbon dioxide, substantial disorders of thinking, memory, fine motor coordination begins, the number of objects and errors of activity increase sharply, the number of hearing and vision disorders begin.

Morphological studies of the animal brain showed that changes in the endothelium of cerebral vessels, chromatolysis, vacuolaization and swelling of the cytoplasm of brain neurons occur when placed in 10% carbon dioxide for only 10 minutes.

In terms of production activities (especially in emergency situations), the impacts of simultaneously several extreme factors are important. In most cases, with such combined effects, carbon dioxide aggravates a negative impact on a person. With physical exertion in the diver or cosmonaut, carbon dioxide carries for itself nitrogen and, activating the diffusion of tissues in bubbles, with pressure drops, contributes to the occurrence of decompression (caisson) disease.

When considering the effect on the body, carbon dioxide in very high concentrations may impress that these issues are important only for narrow specialists and rare specialties. In fact, it is not. In rooms with poor ventilation, where many people and working equipment, the increased carbon dioxide content is not an exception, but rather a bad rule. The poorly ventilated kitchen of the residential apartment with the included gas burners is quickly filled with combustion products. The content of carbon dioxide can be significantly increased in the atmosphere of cities (especially in industrial smokers), in places of transportation of transport.

ANNOTATION

In this paper, the effect of carbon dioxide concentration on the human body is considered. This topic is relevant due to the frequent violation of the level of comfortable concentration of CO 2 in closed rooms, as well as in connection with the lack of standards in Russia on the maintenance of carbon dioxide.

Abstract.

In This Paper, The Effect of the Concentration of Carbon Dioxide on the Human Body Is Considered. The Actual Topic Is Topical In Connection with the Frequent Violation Of the Level of Comfort of Co 2 Concentration in Enclosed Premises, As Well As in Concentration with the Absence in Russia of Standards for the Content of Carbon Diocheide.

Breathing is a physiological process that guarantees the course of metabolism. For a comfortable existence, a person must breathe air consisting of 21.5% oxygen and 0.03 - 0.04% carbon dioxide. The rest fills the dioment gas without color, taste and odor, one of the most common elements on the ground - nitrogen.

Table 1.

Parameters of oxygen content and carbon dioxide in various environments

At the concentration of carbon dioxide above 0.1% (1000 ppm) there is a sensation of stuffiness: general discomfort, weakness, headache, reduction of the concentration of attention. Also increases the frequency and depth of breathing, the bronchi is narrowing, and at a concentration above 15% - the spasm of the voice slot . With prolonged location in rooms with an excess number of carbon dioxide, changes occur in the blood, central nervous, respiratory systems, and perception, operational memory, the distribution of attention is violated during mental activity.

There is an erroneous opinion that these are manifestations of the lack of oxygen. In fact, these are signs of an increased level of carbon dioxide in the surrounding space.

At the same time, carbon dioxide is necessary for the body. Partial carbon dioxide pressure affects the bark of the brain, respiratory and vessel centers, carbon dioxide is also responsible for the tone of vessels, bronchi, metabolism, secretion of hormones, electrolyte composition of blood and tissues. So, indirectly affects the activity of enzymes and the speed of almost all biochemical reactions of the body.

Reducing the oxygen content of up to 15% or an increase of up to 80% does not significantly affect the organism. While the change in the concentration of carbon dioxide by 0.1% has a significant negative impact. From here we can conclude that carbonated about 60-80 times more important than oxygen.

Table 2.

Dependent in the amount of carbon dioxide from the type of human activity

From 2 l / h	Activity
18	State of calm wake
24	Work at the computer
30	Walking
36
32-43	Household chores

Modern person spends a lot of time in the room. In the conditions of harsh climate, people stay on the street only 10% of their time.

In the room, the concentration of carbon dioxide is growing faster than the oxygen concentration decreases. This pattern can be traced on schedules obtained by experienced in one of the school classes.

Figure 1. The dependence of the level of carbon dioxide and oxygen on time.

The level of carbon dioxide in the class during the lesson (A) is constantly growing. (For the first 10 minutes - setting up devices, so the readings will jump.) For 15 minutes of change with the open window, the concentration of CO 2 drops and then grows again. The oxygen level (b) is practically not changing.

At the concentration of carbon dioxide indoors above 800 - 1000 ppm, people working there are experienced by a patient building syndrome (CBS), and buildings are called "patients". The level of impurities that could cause irritation of mucous membranes, dry cough and headache grows significantly slower than carbon dioxide levels. And when its concentration fell below 800 ppm (0.08%) in the office space (0.08%), then the symptoms of the CBF became weaker. The SBS problem became relevant after the appearance of hermetic double-glazed windows and the low efficiency of forced ventilation due to electricity saving. Undoubtedly, the reasons for the SBS can perform the allocation of construction and finishing materials, disputes of mold, etc. With improper ventilation, the concentration of these substances will grow, but not as fast as the concentration of carbon dioxide.

Table 3.

As different amounts of carbon dioxide in the air affect the person

Level CO 2, PRM	Physiological manifestations
380-400	Perfect for health and well-being of a person.
400-600	Normal air quality. The recommended for children's rooms, bedrooms, schools and kindergartens.
600-1000	Complaints on air quality appear. In people suffering from asthma, attacks can be freed.
Above 1000.	General discomfort, weakness, headache. The concentration of attention falls by a third. The number of errors in the work is growing. It may lead to negative changes in the blood. May cause problems with respiratory and blood systems.
Above 2000.	The number of errors in the work increases greatly. 70% of employees cannot focus on work.

The problem of the increased level of carbon dioxide in the room exists in all countries. It is actively engaged in Europe and Canada. There are no tough standards for maintenance in carbon dioxide premises. Turn to the regulatory literature. In Russia, the rate of air exchange is at least 30 m 3 / h. In Europe - 72 m 3 / h.

Consider how data obtained numbers:

The main criterion is the amount of carbon dioxide allocated by a person. He, as discussed earlier, depends on the type of human activity, as well as from age, gender, etc. Most of the sources are considered 1000 ppm as an extremely permissible concentration of carbon dioxide indoor for a long stay.

For calculations, we will use the designations:

• V - volume (air, carbon dioxide, etc.), m 3;
• V k - room volume, m 3;
• V CO2 - volume of CO 2 indoors, m 3;
• v is the rate of gas exchange, m 3 / h;
• v in - "Ventilation speed", the volume of air supplied to the room (and removed from it) per unit of time, m 3 / h;
• v d - "respiratory speed", oxygen volume substituted by carbon dioxide per unit of time. The coefficient of respiration (the inequality of the volume of oxygen consumed and exhaled carbon dioxide) do not take into account M 3 / h;
• v CO2 - the rate of change of volume CO 2, M 3 / h;
• k - concentration, ppm;
• k (t) - concentration from 2 on time, ppm;
• k B - concentration of CO 2 in the air supplied, ppm;
• k max - the maximum allowable concentration of CO 2 indoors, PPM;
• t - time, h.

Find a change in the volume of CO 2 indoors. It depends on the admission of CO 2 with the supply air from the ventilation system, income from 2 from respiration and removing contaminated air from the room. We assume that CO 2 is evenly distributed on the room. This is a significant simplification of the model, but makes it possible to quickly assess the order of magnitude.

dV CO2 (T) \u003d DV B * K B + V D * DT - DV B * K (T)

Hence the rate of change of CO 2:

v CO2 (T) \u003d V B * K B + V D - V B * K (T)

If a person entered the room, the concentration of CO 2 will grow as long as it does not come to an equilibrium state, i.e. Removal from the room will be exactly as much as she acted with breathing. That is, the speed of change of concentration will be zero:

v in * k in + v d - v in * k \u003d 0

The established concentration will be equal to:

k \u003d k in + v d / v in

It is easy to find out the necessary ventilation rate with a permissible concentration:

v B \u003d V D / (K Max - K B)

For one person with v d \u003d 20l / hour (\u003d 0.02 m 3 / h), K max \u003d 1000ppm (\u003d 0.001) and clean air outside the window with V B \u003d 400ppm (\u003d 0.0004) We obtain:

v B \u003d 0.02 / (0.001 - 0.0004) \u003d 33 m 3 / h.

We got a digit given to the joint venture. This is the minimum ventilation volume per person. It does not depend on the area and volume of the room, only from the "respiratory rate" and the volume of ventilation. Thus, in a state of calm wake, the concentration of CO 2 will grow to 1000 ppm, and in physical activity there will be exceeding the norms.

For other K max values, ventilation volume should be:

Table 4..

Required air exchange to maintain a given concentration of CO 2

Concentration CO 2, PPM	Required air exchange, m 3 / h
1000	33
900	40
800	50
700	67
600	100
500	200

From this table, you can find the required ventilation volume with a given quality of air.

Thus, the air exchange 30 m 3 / h, adopted by the regulatory in Russia, does not allow to feel comfortable in the room. The European standard of air exchange 72 m 3 / h allows the concentration of carbon dioxide that does not affect human well-being.

Bibliography:

1. I. V. Gurina. "Who will answer for the stool in the room" [Electronic resource]. Access mode: http://swegon.by/publications/0000396/ (Reference Date: 06/25/2017)
2. Oxygen and carbon dioxide in human blood. [Electronic resource]. Access Mode: http://www.grandars.ru/college/medicina/kislorod-v-krovi.html (Date of handling: 06/23/2017)
3. SP 60.13330.2012 "Heating, ventilation and air conditioning" page 60 (Appendix K).
4. What is carbon dioxide? [Electronic resource]. Access Mode: http://zenslim.ru/content/%D0%A3%D0%B3%D0%BB%D0%B5%D0%BA%D0%B8%D1%81%D0%BB%D1%8B% D0% B9% D0% B3% D0% B0% D0% B7-% D0% B2% D0% B0% D0% B6% D0% BD% D0% B5% D0% B5-% D0% BA% D0% B8 % D1% 81% D0% BB% D0% BE% D1% 80% D0% BE% D0% B4% D0% B0-% D0% B4% D0% BB% D1% 8F-% D0% B6% D0% B8 % D0% B7% D0% BD% D0% B8 (Date of handling: 06/13/2017)
5. EN 13779 VENTILATION FOR NON-RESIDENIAL BUILDINGS - P.57 (Table A / 11)

Concentration of carbon dioxide in clean atmospheric air: carbon dioxide - 0.04%

For comparison, the typical level of CO2 in the atmosphere of megalopolises is 0.06-0.08%, and this is exactly the air that serves ventilation into the room.

There is a question, but will the ventilation help?

Ventilation helps reduce the concentration of CO2 carbon dioxide in the premises only if you live or work in an environmentally friendly place, but it is almost impossible to maintain CO2 carbon dioxide concentration in rooms within atmospheric, i.e. 0.04%.

How many CO2 highlights a man when breathing

It is known that one person in a calm state in one hour consumes 20-30 liters of oxygen with a separation of 18-25 liters of carbon dioxide. In the air exhaled, carbon dioxide is 100 times larger than in clean atmospheric air. Knowing it, it becomes clear why gas, which is included in the exchange processes of the human body, under certain circumstances may cause him harm. The last studies of Western scientists show that carbon dioxide indoors is a substance that even in low concentrations may be addicted to health and human performance.

(In the article, as a unit of measurement of CO2, uses PPM (Parts Per Million or CO2 particles per million air particles). 1000 ppm \u003d 0.1% CO2 content.)

The excessive concentration of carbon dioxide in the air can lead to negative changes in the blood and the urine of man and human DNA.

Scientists have found that carbon dioxide even in low concentrations negatively affects the human cell membrane and can lead to such biochemical changes in the body as an increase in PSO2, an increase in the concentration of bicarbonate ions, acidosis, etc., in its influence carbon dioxide is also toxic for humans. like nitrogen dioxide (NO2)

The increased concentration of carbon dioxide affects human health, since under its effection, blood pH decreases, which leads to acidosis, the minimum effect of the consequence of acidosis is the state of overexcitation and moderate hypertension. As the degree of acidosis increases, drowsiness and the state of anxiety appears. One consequence of these changes is to reduce the desire to show physical activity and receive pleasure from this.

Under the influence of carbon dioxide, at a concentration of carbon dioxide (CO2) above 800 PPM, an increase in the number of oxidative stress markers in DNA is observed, the number of markers is directly connected with the time of finding a person in the room.

Carbon dioxide in the school class increases the incidence and reduces student performance

Special attention should be paid to the quality of air, which to breathe children in classes, the concentration of carbon dioxide (CO2) in the air of the classroom can increase several times by the end of the occupation.

Children who are studying in classes with a high concentration of carbon dioxide, often observed heavy breathing, shortness of breath, dry cough and rhinitis, these children have a weakened nasopharynk.

The increase in the concentration of carbon dioxide (CO2) in the room leads the emergence of asthma attacks in asthmatics children.

Due to increasing the concentration of carbon dioxide in schools and higher educational institutions, the number of skipping lessons by students on illness is increasing. Respiratory infections and asthma are essential diseases in such schools.

Increased concentration of carbon dioxide in the class negatively affects the results of children's study, reduces their performance.

The problem of increased concentration of carbon dioxide is also characteristic of kindergartens, and the most strongly level of CO2 rises in the bedrooms of kindergartens

The report on the health status of children in Russian Federation (According to the results of the All-Russian clinical examination 2002), it was noted that the diseases of the respiratory organs dominate the incidence of children in the age of the age.

Doctor of Medical Sciences Boris Revich believes that "in Russian classes it is difficult to breathe due to plastic windows that are installed when repairing schools. The room closed with plastic turns into a closed chamber, and carbon dioxide in such conditions may exceed the standards many times. However, in our country there are practically no data on this topic, and work on this issue is not conducted. "

Carbon dioxide in office space reduces the productivity of employees, worsens their health status, leads to a patient building syndrome (SBS)

Measures. Moscow has shown that in a number of offices, the concentration of carbon dioxide (CO2) reached 2 000 PPM and above.

Research has shown. That when the CO2 carbon dioxide concentration is above 800 -1000 PPM, office buildings begin to experience symptoms of the SBS: irritation of mucous membranes, dry cough, headache, reduced performance. Eye inflammation, nasal congestion, ride inflammation, problems associated with the respiratory system, dry cough, headache, fatigue and complexity with a concentration of attention, and carbon dioxide is one of the main causes of SBS development.

Certified devices for the definition and control of air quality

Portable Air Quality Sensor - Atmotube

Influence of carbon dioxide concentration in indoor health

CO2 level (ppm)	Air quality and his influence on man
Atmospheric air	Ideal for human health
	Normal air quality
	A single complaints of air quality appear
	More frequent complaints of air quality.
Above 1000 ppm.	Common discomfort, weakness, headache, problems with concentration of attention. The number of errors in the work is growing. Negative changes in DNA begin.
Above 2000 ppm	May cause serious deviations in people's health. The number of errors in the work increases greatly. 70% of employees cannot focus on work

To replenish the room with air with a large oxygen content, it is necessary to pull the spent air with a high content of carbon dioxide and other substances.

From here, simple requirements arise:

1. The room must have a sufficient volume so that a person is always enough to breathe. Therefore, when buying a home it is desirable to count not only square meters, but also cubic.
2. It is necessary to ensure both the influx of air and its outflow. In the absence of one or another, the process of air intake occurs for a long time and does not sleep for an increase in the concentration of carbon dioxide. Example. In old houses, everything was done very competently - the receipt of fresh air was evenly carried out through the slots in the windows and doors, and removing the spent - through exhaust ventilation in the toilet. After installing modern hermetic windows and doors, a person abruptly limited not only the flow of fresh air, but also the outflow of spent. Support valves help, but they supply the air locally, compared to the uniform distribution of the old window slots. Natural or active ventilation should provide such an air exchange, so that at any time in the presence of a different number of people, the content of oxygen, carbon dioxide and many other components of air has always been in a comfortable limit.
3. In winter it is possible to provide heating of the incoming air. The simplest option is the installation of the supply valve between the windowsill and the heating radiator (modern gap analog). In order not to dispose of heat with the separation from the room, you can use the recovery systems when the outgoing stream is heated incoming.
4. The carbon dioxide sensor allows you to enable ventilation and adjust its performance in automatic mode so that the energy is spent only in the presence of a person with an increase in carbon dioxide concentration.
5. About the dangers of air conditioner. In addition to the cold air flow, often falling on the heads of people, the temperature difference when exiting the street, bacteria, comfortably living in the coolness, there is a danger that is rarely mentioned. In order to save electricity, the operation of the air conditioner closes all windows. At the same time, the concentration of carbon dioxide quickly reaches a considerable value and is cooled, but the poor is oxygen. Therefore, the window must be kept open - health is more expensive.

http://www.enontek.ru/co2/zdorove-CHELVEKA.

				Magicair.
CO2 detection (carbon dioxide)
Detection of Co. (carbon monoxide)
VOC / Los detection (volatile organic compounds)
Temperature measurement
Measuring moisture
Data Logger. (data record)

Most people believe that carbon dioxide is harmful. It is not surprising, because about the negative properties of CO 2, we were told in school at the lessons of biology and chemistry. Representing carbon dioxide exclusively as a harmful substance, the teachers usually silent about his positive role within our body.

It is meanwhile in meanwhile, because carbon dioxide, or carbon dioxide, is an important member of the respiratory process. How does carbon dioxide acts on our body and what is it useful?

Carbon dioxide in human body

When we do inhale, our lungs are filled with oxygen, while at the bottom of the body - alveoli - carbon dioxide is formed. At this moment there is an exchange: oxygen goes into the blood, and carbon dioxide is distinguished from it. And we exhale.

Repeating about 15-20 times in a minute Breath launches all the livelihoods of the body,
And the carbon dioxide formed at the same time affects many vital functions immediately. What is useful carbon dioxide for a person?

CO 2 regulates the excitability of nerve cells affects the permeability of cell membranes and the activity of enzymes, stabilizes the intensity of hormone products and the degree of their effectiveness, participate
In the process of binding to proteins of calcium and iron ions.

In addition, carbon dioxide is the final metabolic product. Exhausted we remove unnecessary components that have arisen during the metabolism and clean our body. The metabolic process is continuous, so we need to remove the final products constantly.

It is important not only the presence, but also the amount of CO 2 in the body. The normal level of content is 6-6.5%. This is enough to ensure that all "mechanisms" in the body worked correctly, and you felt good.

The lack of or excess carbon dioxide in the body leads to two states: hypokapinia
and hypercapnia.

Hypopania - This is a lack of carbon dioxide in the blood. Occurs with deep rapid breathing when the body allocates too a large number of carbon dioxide. For example, after intensive sports. Hypopelia can lead to a light dizziness or loss of consciousness.

Hypercapnia - This is an overabundance of carbon dioxide in the blood. There is indoors with poor ventilation. If the concentration of CO 2 indoors will exceed the norm, then its level in the body will also be higher.

Because of this, a head may get sick, nausea and drowsiness appear. Especially often hypercupnia arises in winter from office workers, as well as in large queues. For example, in the mail or in the clinic.

The surplus of carbon dioxide may occur in extreme situations, for example, when breathing under water.

We will tell you more about the consequences of hypercupinia and ways to combat her in one of the following articles. Today we will focus on hinders and its treatment.

As mentioned above, carbon dioxide affects many processes in our body, so it is so important that its level holds within the normal range. And one of the types of respiratory gymnastics will help to bring the CO 2 content.

But such phrases look not very convincing, especially when we want to solve some particular problem or get rid of a certain illness. Let's figure out how carbon dioxide helps
and respiratory gymnastics in specific cases.

Let's start with the fact that in the process of classes on a simulator or standard respiratory practices, the blood of a person is saturated with carbon dioxide, the blood supply to all organs is improved, as a result of which a positive effect appears.

The body begins to treat himself from the inside, providing different impact on different groups of organs. For example, the improvement of blood supply and the increase in CO 2 leads to the normalization of the tone of the smooth muscles of the stomach and intestines. It has a positive effect on the intestinal work, restores its basic functions and helps in the fight against various diseases of the gastrointestinal tract.

Carbon dioxide positively affects the permeability of membranes, which normalizes the excitability of nerve cells. It helps it easier to carry stress, avoid nervous exconctions and, as a result, eliminates insomnia and migraine.

CO 2 helps and allergies: carbon dioxide reduces the viscosity of the cytoplasm, which fills the cells. This has a positive effect on metabolism and increases the activity of protective systems of the body.

Protective systems and anti-viral diseases are activated. Regular activity of respiratory gymnastics helps to avoid ARVI and ARZ due to the increase in local immunity.

Helps carbon dioxide with bronchitis and asthma: it reduces the spasm of the vessels, which allows you to get rid of sputum and mucus in bronchi, and according to the disease itself.

Due to the normalization of the lumen of the vessels go on amendment and patients with hypotension. Classes of respiratory gymnastics help them gradually cope with low arterial pressure.

Despite all the positive changes arising in our body in normalizing the level of carbon dioxide, it is not a panacea from all diseases. This is more likely to help you have your body by studying breathing gymnastics.

Believe me, after several months of classes, the body will definitely thank you with good well-being. Before you start classes, be sure to check the CO 2 level in the body and make sure that the respiratory gymnastics or the Samolader simulator will help with your disease.

And in order not to miss the material about the hypercupinia and receive our new articles on the mail, on our blog. We will send materials once a week.

Dilution of forces, weakness, patient head, Depression is a familiar condition? Most often it happens in the fall and winter, and poor well-being is written off on the shortage of sunlight. But it's not about it, but in the excessive content of carbon dioxide in the air you breathe. The situation with the level of social premises and transport in our country is truly catastrophic. Duchot, increased humidity and mold are also a consequence of missing ventilation. Sealed plastic windows and air conditioners only exacerbate the situation. Do you know that with two-time exceeding (relative to the street background) of carbon dioxide in the air, brain activity is reduced by 2 times? By the way, it is the yawning students at lectures that are an indicator of high content of CO₂ in the audience. And very often the ventilation is absent in office buildings. What productivity can it be about, if a person simply does not work brains?

So, let's start with the basics. A person with breathing absorbs oxygen, and highlights carbon dioxide. Also, carbon dioxide is allocated when burning hydrocarbons. The average level of social level on our planet is currently about 400 ppm (parts per million parts per million, or 0.04%) and is constantly growing due to the continuous growth of petroleum products. It should be known that the trees absorb carbon dioxide and this is that their main function lies (and not as mistakenly believe that they only produce oxygen).

While a person is outdoors - there are no problems, but they begin when it is indoors. If a person is locked in a hermetic room without a bilge of fresh air, he will die not from the lack of oxygen, as the majority is mistaken, and from repeatedly exceeding the carbon dioxide level, which this person itself has developed in the lungs. Let us back up the problems of public transport ventilation (I will write about it separately) and turn our attention to urban apartments / Country houses, in which there is a massive ventilation.

At the same time, a person spends at least a third of his life in his home / apartment, and in reality half - you can not save on my own health!

2. The problem of increased maintenance of CO₂ in the air is especially relevant in the cold season, because In the summer, almost everyone is constantly open. And with the onset of cold weather, the windows open more and less, to end up with episodic ventilation. And, what coincidence, it is in the cold season that the depression, drowsiness and a decline of forces appear.

3. Previously, there was even such a tradition - sticking the slots on the windows in front of the cold. Often together with the windows and completely excluded the flow of fresh air to the house. I once again emphasize that fresh air is needed not because it has an oxygen necessary for breathing, but in order to reduce the excessive content of carbon dioxide to replace air indoors.

4. Many people think that they have a hood (in the apartments at least in the kitchen and in the bathroom), that's through it, the room will be ventilated. Yeah, in addition by installing plastic windows that are completely sealed. But how the air goes to the hood if you do not have a tributary in the form of either slots in the frames or open window? And with good plot usually pulls the air from the entrance.

5. It is worse only to deliver air conditioning in the form of a split system and use it with closed windows. Remember, when the air conditioner cannot close the windows! Here is a modern hermetic country house, which has no cracks in enclosing structures. And you do not need to be kept on the stories that the tree or aerated concrete "breathe" and therefore you can do not care for ventilation. Remember, under this term implies high vapor permeability of the material, and not the ability to serve fresh street air into the house.

6. Most is limited to the fan on the hood from the bathroom and the kitchen. Okay, turned on the fan, all windows and doors are closed in the house. What will be the result? That's right, there will be a vacuum in the house, because the new air is nowhere to take. So that natural ventilation worked, fresh air should flow into the house.

7. To measure carbon dioxide in the air, there are now relatively available sensors with an NDIR sensor. Not a dispersion infrared method (NDIR) is based on changing the intensity of IR radiation before and after absorbing in the infrared detector with election sensitivity. Initially, I was going to buy such a sensor on Aliexpress last year (then it cost about $ 100), but the growing price due to the growth of the dollar's course forced to think and search for alternative options. Suddenly, this sensor was found in Russia under the Russian brand for the same 100 dollars last year's course. Total, on Yandex.Market, I found the most advantageous offer and acquired a sensor at a price of 3500 rubles. The model is called MT8057. Of course, the sensor has an error, but it is not important when it comes to the fact that we are important to measure with excess of carbon dioxide concentration several times higher than the norm.

8. Closed plastic windows, air conditioners - all this nonsense compared to the gas stove in the apartment (for the photo I lit a gas burner, because To shoot, it had to be washed).

9. So all attention to the schedule. Kitchen 9 square meters, ceilings 3 meters high, open door to the kitchen (!), Closed window, there is a hood with a natural motion (in the summer of a weak), one person. The sensor stands at an altitude of 1 meter from the floor, on the dinner table. "Normal" level of indoors without people about 600 ppm. One person comes - the level is instantly rises. It goes - falls. Comes again - again rises. And after that, includes one (!) Gas burner. The level of the SO is almost instantly rises above 2000 ppm. Anxiety! Open the window. We observe how slowly decreases the concentration of carbon dioxide in the air. And add 1-2 more people here. Even if you do not include a gas stove, then 3 adults man without performing heavy physical work raise the level of CO₂ in the room to a critical mark in 30 minutes.

Cook on a gas stove? Be sure to open the window and turn on the exhaust (do both at the same time).

Included air conditioning? Be sure to open the window.

Just are you in the room? Be sure to open the window. And if there are many people in the room - open the window.

And at night, during sleep, the window must be kept open.

In short, you either have a difty ventilation channel, or a constantly open window.

10. As for trees and what they can be useful. Their essential function in the process of growth is the absorption of carbon dioxide. Few people think of why firewood is lit and where they have so much energy from them. So this energy in the form of carbon and accumulates in the tree trunk as a result of absorption of carbon dioxide. And the oxygen trees produce as a byproduct in the photosynthesis reaction.

11. Open the window in the warm season is not difficult and in general in the summer the problem is not as relevant (except for the use of air conditioners with closed windows). Problems begin in winter, because no one holds the open window, this is huge uncontrollable heat losses and will be tritely cold. That's exactly at this moment and it is worth raising an alarm. Health is invaluable.

The problem is very serious and is global. For example, before the fall last year, I did not think about the importance of ventilation for health: that in the apartment, that in a country house. If you look into the past, it is the regular autumn depression, drowsiness and a bad mood during the cold season of the year in an urban apartment confused to think towards what you need to learn from the city and build, because In the fall, the head was sick and there was a general weakness of the body while in the city. But as soon as I went to nature - the problem disappeared. I wrote off all this is not a shortage of sunlight, but it was not in it. In winter, I stopped keeping an open window (Coldly) and received a multiple excess of the apartment in the apartment.

The easiest and most affordable solution to the problem is to constantly keep an open window, or to ventilate focusing on the indicators from the CO₂ sensor. A normal level of CO₂ indoors can be considered a concentration to 1000 ppm if higher - it is necessary to ventilate urgently. An indirect indicator of high concentration of carbon dioxide in the air can be considered humidity. If without objective reasons and lowering the temperature in the room begins to increase the humidity - it means that the level of CO₂ is growing.

The danger of increased concentration of carbon dioxide in the air is that the human body reacts with a very large delay. By the time you felt that it was stuffy and need to ventilate in the room - you're at least half an hour were indoors with a high content of CO₂ in the air.

In the next post, I will tell you what problems are with ventilation in public transport (buses, trains, airplanes). And also show how to properly organize ventilation in a country house, which is for some reason for some reason.

To be continued.

Articles on the topic for independent study.