Bell pepper is a wonderful tasty and healthy vegetable that you can ...
To feel comfortable at home, besides many other factors, it is necessary to have clean air saturated with oxygen of a certain temperature and humidity. When designing housing in houses mass development this condition is observed in accordance with the current sanitary standards and under the supervision of the relevant inspections. However, the norms determine only the minimum necessary human needs for the climate. In conditions of free economic relations, to which we strive, everyone is free to independently decide how much he wants and has the opportunity to improve his environment. And there are many opportunities for this.
Ventilation at no cost
The cheapest ventilation remains an open window... Together with natural ventilation channels, which are always provided during the construction of housing, it provides air exchange in the apartment, consistent with sanitary standards. However, along with the fresh air through the window, street noise, dust, and sometimes insects penetrate into our housing. To avoid these troubles, the window can be replaced with the so-called. supply valve... A fairly simple device is installed in the outer walls of the dwelling and includes noise-absorbing and anti-condensation insulation, an anti-mosquito net, and a regenerable (i.e., cleanable) filter. In addition, in the inner head of the supply valve there is a possibility of manual adjustment of its cross section. If, at the same time, install on the natural ventilation channels of the bathroom of the apartment, as well as the kitchen household fans periodic action, we get a ventilation system that fully meets the biological needs of a person, as well as protects housing from fungal infections - a problem that one has to face in case of an illiterate attitude to ventilation. Of course, the proposed solution in winter can cause some hypothermia in individual zones in the apartment, as a result of which it has to be abandoned for a certain period of the cold season, by adjusting the valve opening.
Supply and exhaust ventilation and air conditioning
If manually adjusting the valves seems cumbersome to us, we can afford to create a mechanically driven system. In an air handling unit, which is usually completely manufactured at the factory, the air is cleaned on a filter, heated on an electric or water heater, and is distributed through the air duct system to the rooms in the quantity and temperature that best meets our needs. Wherein room temperature set by the user for quite simple device, and its maintenance is carried out automatically by means of a system of sensors and actuators connected into a single network. The disadvantage of this system is the inability to reduce the air temperature in the house during the warm season, even with the heater turned off, it will not be lower than the outside temperature, and often higher.
In addition to the system supply and exhaust ventilation it is possible to use independent cooling system air . The variety of these systems allows from one outdoor condensing unit to provide air cooling in three, five, and up to seven or eight rooms with a total area of approximately 150 sq. M. A common misconception customers who are uninformed about air conditioning are confident that through outdoor unit split systems supply fresh air to the premises... The outdoor condensing unit is connected to indoor unit split systems are just copper tubes for circulation of freon - a refrigerant for cooling indoor air, as well as for removing heat during condensation of freon in it.
Air conditioners
The next level of air conditioning equipment- mixed air conditioning system fresh air , in which the supply of fresh air, its processing, including the temperature parameter (either heating or cooling) is carried out in one unit -. At the same time, the regulation of the air temperature in rooms overlooking different sides light, is carried out by means of either additional heaters (quality control) or control valves (quantitative control), of course, operating in automatic mode. It is enough to set the desired temperature on the controller, and the system will independently fulfill your wish. If necessary, it is possible to install a system for maintaining the humidity regime in the premises into the duct air conditioner.
Of course each of these systems has its own advantages and disadvantages... Supply valves and duct fans installed in the outer walls will provide only the minimum required air exchange in the dwelling. In addition, this system does not regulate temperature regime in the premises. The supply and exhaust ventilation system with mechanical induction requires regular qualified maintenance, and during the cold season it consumes at least 6 kW of energy per 100 sq. m of rooms for heating air from -26oС (design temperature winter period) up to + 22oС. The central air conditioning system operates under the condition of 5-6 times the air exchange in the premises, one of which ensures the supply of fresh air, and 4-5 times circulates inside the premises. This leads to an increase in the size of the air ducts, which sometimes does not fit well with design solutions... In addition, this system significantly complicates the automation of control. The importance of proper operation of such systems increases many times over.
Choosing a ventilation and air conditioning system for a residential area - not an easy task, depending on many factors. It must be decided by the customer in close contact with the air conditioning professionals. Only in this case the created systems will best meet the needs of users.
There is an opinion that air conditioners can completely or partially replace ventilation. Supposedly, it is enough to install the most modern split-system that cleans, moisturizes, ionizes, has anti-virus, anti-allergenic, antibacterial filters, and you can enjoy the purest fresh air. But is it really so?What is ventilation and what is air conditioning?
To begin with, let's delimit the concepts:Conditioning- This is cooling or heating of air in closed rooms.
Ventilation- this is the supply of oxygen-saturated air and the removal of waste.
That is, during air conditioning, the air remains the same. It can be heated, cooled, dried, ionized, but at the same time it is not replaced by a new one.
And during ventilation, an exchange of air masses occurs.
System tasks:
The main conditioning purpose- creating people-friendly climatic conditions(bringing the desired coolness to the heat, or heat to the cold).
Ventilation objectives much wider.
Every second we breathe in oxygen and breathe out carbon dioxide. In addition, the air is polluted by emissions from construction and finishing materials, from gas burners and plates, from sprays and aerosols, from cleaning and detergents etc. We breathe all this.
But, given the prices for heating - for many, this is simply an unaffordable luxury. In addition, ventilation can lead to drafts and thus cause colds.
Forced supply and exhaust air becomes the output. ventilation units supplying fresh air and keeping the house warm in winter or cool in summer.
Are there air conditioners that act as ventilation equipment?
An air conditioner device is like a refrigerator. It either cools the air or heats it up (when freon moves to reverse direction). In the upper part of the inner case there is an opening for air intake from the room. At the bottom - for supplying a cooled or heated stream.It turns out that the same air passes through the system, which is not renewed by the influx.
If it is indicated that the air conditioner has a “ventilation mode”, it means that the unit will act as a fan without additional heating or cooling. However, a portion of oxygen will not enter the house.
Recently, air conditioners with forced ventilation, carrying out a mixture of air due to an additional external block and a flexible hose. But the volume of "inflow" in them is so small, and the noise is so great that many owners quickly abandon this equipment.
If there is ventilation, do you need an air conditioner?
Air conditioning devices do not replace ventilation, but they can help it!For example, if the ventilation unit supplies air and removes exhaust air, and the air conditioner heats / cools it, dehumidifies / humidifies, ionizes or cleans it from dust. Equipping your home with a ventilation and air conditioning system, you will ensure maximum comfort and a healthy microclimate.
Exists ventilation units capable of heating and conditioning air, filtering it, controlling humidity and carbon dioxide. Moreover, they are much more energy efficient than air conditioners and heating devices. However, this pleasure is very expensive. Therefore, the choice is always yours!
Impact on human health and well-being:
Air conditioner will not affect the health of households if you adhere to certain rules:1. It is advisable not to set too cool temperature, obviously lower than necessary. If it is hot outside, and indoors +18, +19 degrees, then a sharp drop can cause hypothermia and colds.
2. If you turn on the air conditioner, close all the windows and do not provide ventilation, then the concentration of carbon dioxide will increase significantly, it will become more difficult to breathe, and the risk of catching viruses will increase, despite the comfortable temperature in the room. So don't forget about ventilation!
3. Filters become clogged with dust and dangerous microorganisms over time. Neglecting replacement or 
by cleaning the filter elements, we will ensure that fungi and mold develop in the air conditioner. Moreover, the device will become a source of distribution of bacteria that cause allergic reactions.
Subject to these rules, air conditioners will only bring comfort!
The specialists of the group of companies "Terkont" carry out the design and installation of climatic equipment for a home, office or apartment in Chelyabinsk and Yekaterinburg. You can contact us by one of the phones listed on the site. Some air conditioners and ventilation devices are presented in
Why is there a need for forced ventilation of the cottage, after all, they did without it?
Construction technologies, materials used and construction standards have changed. Earlier in wooden house with ordinary windows and a simple layout, it was possible to do without special ventilation systems... Ventilation was carried out in a natural way due to the movement of air caused by temperature differences, by infiltration through windows, leaks in doors and structural elements of the house. Modern houses made of bricks and concrete, equipped with double-glazed windows, represent an almost airtight structure in which natural ventilation is difficult.
Comfort, sound insulation and heat saving, which give modern materials, have a downside. In addition, the layout modern home divided into isolated zones (kitchen-dining room, living room, separate bedrooms, shower rooms and bathrooms) makes ventilation even more difficult. As a result, air stagnates in the premises, it accumulates harmful substances, the humidity in the bathrooms rises, which ultimately affects health. Sometimes it turns out that a person living outside the city does not get the fresh air he counted on when purchasing this housing. The supply and exhaust ventilation system solves this problem, independently or together with air conditioning.
Which is better: to install several split-type air conditioners separately and a separate supply and exhaust ventilation system or a single ventilation system with a central air conditioner?
Both options have the right to life, but differ from each other in terms of costs and opportunities. The first system, using split air conditioners, allows you to accurately maintain different air temperatures in air-conditioned rooms. Everyone can set the temperature in their room to their liking. However, this is a more expensive option, because each air-conditioned room must have its own indoor air conditioner unit. It is also necessary to think about placing the external units of split systems outside the building. Even if you use common multisplit systems, all the same, as a rule, no more than four internal ones can be hung on a maximum of one external unit. It should also be borne in mind that the removal of the external unit from the internal ones should not be large, otherwise the installation will be expensive, and the efficiency of the air conditioner will decrease. It is also necessary to reserve sufficient electrical power to power the air conditioners. The supply and exhaust ventilation system with a central air conditioner maintains a uniform temperature for the whole house, which does not significantly differ in rooms. The same system is used for ventilation and air conditioning. Some room-specific adjustments are possible by changing the air flow rate in a particular room. V simple version this is done by adjusting the valves on the ventilation grilles in the room. Since the energy content of the air is small, the volume of air supplied to the premises must be sufficient to maintain the required temperature. On the other hand, the installed electrical capacity and operating costs of such a system are lower, as are the cost of the system as a whole. The external air conditioning unit of such a system will be larger than that of a conventional split air conditioner, but it is one and its capacity is several times less than the total capacity of split air conditioners for the same volume of premises. There is one more thing. Complete systems of supply and exhaust ventilation with central air conditioning have a single control and automation unit. The air temperature and its amount supplied to the premises can be changed from the control panel or automatically. Air conditioning and ventilation work in concert.
Is it possible to install a multi-local air conditioning system in the house with one external air conditioner unit and a separate ventilation system?
Indeed, there are air conditioning systems on freon, outwardly similar to conventional split systems, in which more than ten internal ones can be connected to one external unit. Wherein long distance from outdoor to indoor units is not critical. Technically, this is the most advanced air conditioning system available today. However, such a system belongs to the industrial class, costs much more than household split systems and requires trained specialists for installation. Power consumption is significant too. A similar option can be implemented on a chiller-fan coil system. In such an air conditioning system, there is also one external refrigeration unit, which, with the help of a freon compressor, cools the water supplied by the pump to the fan coil units located in the premises. Fan coil units, in turn, cool the air by pumping it through themselves. Additionally, a separate ventilation system is needed. If you are not constrained in funds, then this can be done.
Can one large duct air conditioner be installed along with the ventilation system?
The duct air conditioner operates mainly on recirculated air. That is, it takes air from the premises, cools it and sends it back. For the ventilation system to function properly, two separate duct systems are required in this case. One is for ventilation, the other is for air conditioning. It is necessary to provide for the possibility of laying this rather large number of pipes. In addition, the air from various premises mixes inside this conditioner. In practice, in the most unpleasant case, this means that if someone sneezes in one room, then the germs will spread throughout the house. A duct air conditioner can develop insufficient air pressure to overcome the resistance of the air duct network in the house, which means that an additional fan increasing the pressure must be installed, which complicates the system, and any abnormal complication increases the likelihood of equipment failures. Better to use duct air conditioners for their intended purpose, and in in this case install a complete supply and exhaust system with central air conditioning.
Is there a fundamental difference between an air conditioning system with a supply and exhaust ventilation function and a supply and exhaust ventilation system with central air conditioning?
Both exist. As a rule, the first system to a greater extent uses recirculated air with a partial admixture of fresh air, the second system is direct-flow without recirculation. It all depends on the needs and the specific home. In many cases, the second system is cheaper.
How is recirculation different from recuperation?
Recirculation means the return (full or partial) of the extract air back to the room. All wall mounted household air conditioners are 100% recirculation. Duct air conditioners allow operation at 70% recirculation. Recuperation is the use of heat energy stored in the air removed from the room to heat or cool the incoming supply air. Recuperation takes place in a heat exchanger supply and exhaust system ventilation. In this case, the supply and extract air do not mix.
What does recuperation give and is it needed?
In simple ventilation systems, the exhaust air is simply discharged outside. This increases heating costs in the cold season and air conditioning in summer. Heat recovery systems have a heat utilization efficiency of up to 85% and can significantly save on operating costs. Of course, the initial cost of a recuperation system is often higher despite the lower installed capacity equipment, but then the operation of not only the ventilation and air conditioning system, but also the heating system, will be cheaper. Savings can be up to 20 times compared to systems without recuperation. Complete systems of supply and exhaust ventilation provide a recuperation unit with automation. You don't need to invent anything, you just need to take advantage of the world experience in saving energy resources.
I saw a diagram of a ventilation and air conditioning system that occupies the entire attic floor, but I want to place a billiard room in the attic. How much space is needed for this equipment?
It all depends on the specific situation, the task and the size of the house. In most cases, for a medium-sized cottage, a complete supply and exhaust ventilation unit with central air conditioning, recuperator and automation (without air ducts) can be placed in one basement room. If heating the air in winter is planned on water, it is recommended to do this not far from the room with the boiler.
Maybe not worth purchasing full set expensive equipment? My friend is well versed in technology (options: he has his own plumbers, the son is a child prodigy, the security guard graduated from Moscow State University), will he dock an air conditioner with a fan, add a heater, buy everything you need on the market and the system will cost less?
Not everything is as simple as it seems. First, this technique requires specialized knowledge in the field. Secondly, you should not experiment with an unpredictable ending on your home. Third, you need to decide who will be responsible for the end result. Fourth, it is always best to install standard equipment famous company... The manufacturer is responsible for the normal operation of a set of equipment during normal operation, and you can always make a claim against it if something is wrong.
What communications are needed for the ventilation and air conditioning system?
It is necessary to take care of the reserve of power supply for the air conditioner unit and fans, and if it is planned to heat the supply air in winter with an electric heater, then a reserve for it is also needed. If it is planned to heat the supply air with a water heater, then the reserve power for the boiler must be taken into account. The most economical option is a gas boiler, a water heater. The difference in water temperature from the boiler should not be less than 80-60 ° С. It is necessary to take care of the availability of ventilation shafts for the main air ducts and places for the air distribution channels in the premises. There can be two ventilation shafts. One of them can only be used for extractor hoods from bathrooms, bathrooms and kitchens. This will reduce the cost of the project. As a rule, air ducts with thermal and noise insulation are laid behind a false ceiling. Outlets are decorated with decorative ventilation grilles with an air flow valve. There must be enough space behind the false ceiling to accommodate air ducts and transition assemblies. If there are separate air conditioners, then you need to think about where to put the external units. In the south, sunny side it is undesirable to put them at home. It is also necessary to be able to lay pipelines between indoor and outdoor units of air conditioners. Freon is pumped through them and condensate is discharged. It is also necessary to take care of where the air intake of the supply ventilation will be. If the unit is located in a basement, it is not necessary to arrange an air intake on the roof, and vice versa.
However, all these issues are resolved at the design stage, you just need to not forget about it.
"S.O.K.", No. 9, 2004
Fresh air- perhaps the main reason why wealthy people leave their city apartments. However, even living in a cottage, you should not ignore the air quality in indoor areas Houses.
Air conditioning system type
Experts believe that some air conditioners in country house not enough. Nevertheless, if you want to create an individual climate in each room, you still have to choose them.
All air conditioners are divided into two types. First - simple split systems, in which the condenser and the evaporator are located in different blocks: external and internal.
In a country house with large quantity rooms, the second type of air conditioning system is more appropriate - multisplit system, where there is only one outdoor unit for many indoor units. At the same time, there is one caveat - all air conditioners must work either for cooling or for heating. And the number of internal devices is limited - there can be no more than four of them per external unit. Both of these types of air conditioners have one important drawback - they consume a lot of electricity (about 7 kilowatts per hour).
Energy-saving technologies are implemented in systems mini VRV - multi-zone systems... By spending electricity to dial desired temperature, the engine drops power and only maintains the required climate, thus saving up to 50% of electricity. At the same time, the architecture of the system ensures the placement of up to 9 indoor air conditioning units per 1 external one. The abbreviation VRV itself stands for Variable Refrigerant Volume, which means Variable Refrigerant Volume.
Air conditioner model
When the type of system is selected, it remains to decide what kind of air conditioner is needed for a particular room. Experts give the following recommendations:
1. Wall-mounted and wall-ceiling type air conditioners suitable for bedrooms and living rooms. They can be installed as close to the ceiling as possible, which saves wall space. The length of the track reaches 30 meters. You can clearly adjust the trajectory of the air flow - from a strictly vertical to a strictly horizontal position of the louvers, and warm air in this case, it will be fed to the floor. Most air conditioners have self-cleaning antibacterial filters with titanium apatite coating inside. Wall-mounted air conditioners are not only habitually snow-white, but also beige, and some manufacturers offer mother-of-pearl models. Separate air conditioners will look like a painting on the wall - the designers have taken care of the artistic execution of the case. By the way, you can apply the image to the air conditioner yourself, just remove the case and paint it in any color.
2. Floor-standing or columnar, floor-ceiling and ceiling-type air conditionersideal for spacious living and dining rooms. The powerful unit is almost invisible: if necessary, it is mounted on the floor close to the wall or ceiling. A floor-ceiling air conditioner is indispensable when you need a wide and powerful air flow that can penetrate into the farthest corners of the room. The length of the track for some models is almost 50 meters.
In the ceiling version of the installation, a powerful air conditioner fan creates a wide high-speed air flow (up to 1660 mm), which at first smoothly spreads along the ceiling, and then slowly descends, filling the entire room with uniform coolness, regardless of its footage and layout. This option is suitable for indoor use large area without false ceilings. The floor-standing version is more suitable for air conditioning of offices.
3. Cassette type air conditioners suitable for room cooling complex shapes: L- or T-shaped, narrow and long corridors... The devices are mounted to or under the ceiling (in the case of suspended ceilings). Such units are more compact in comparison with their wall and floor counterparts: the size of the front panel of some models reaches 650 × 650 millimeters. Innings air goes in four directions, the length of the track is about 20-25, and in some models even up to 70 meters.
4. Channel type air conditioners- for complex, from the point of view of architecture, premises, where there are many differences between ceilings and inter-wall spaces, variable number of storeys, horizontal or vertical zoning. The indoor unit is a compact box that can be hidden in narrow ceiling and wall spaces. main feature this type of device: cooled air can be supplied to several rooms at once.
Ventilation systems
Still, air conditioners alone do not solve the problem of fresh air. Oxygen inflow from the street provides supply and exhaust ventilation ... When setting up, it is important to take care of how to make the noise that the installations will make less noticeable. First of all, you should find out if the ventilation system includes sound attenuators, and the duct system itself must be calculated in such a way that the air flow rate is minimal.
Ventilation of the cottage must include a supply system. Such a system in a country house will be most effective in combination with air conditioners - you will achieve both the desired climate and good air exchange. There is only one "but": "bad" air will not be removed from the room. This requires exhaust ventilation.
The exhaust ventilation scheme includes the fan itself and a network of air ducts with air intake grilles, or diffusers. There is also ductless exhaust ventilation: in this configuration, either axial exhaust fan built in window frame or a hole in the wall, or roof fans.
To design supply ventilation, you need to know the following indicators:
- air consumption (calculated in cubic meters per hour and depends on the size of the room);
- heater power (kW);
- head or external static pressure (Pa);
- noise level (dB).
You need to think about where and where the wind will blow in the house at the stage of building design. This is especially true for the communication part of ventilation and air conditioning systems: air ducts and outdoor units. The architect must also take care of how to fit the air conditioners into the interior of the room. Sometimes a special column is installed to camouflage them, or a box on the ceiling is decorated decoratively.
The cost of air conditioning and ventilation systems and their installation
The complex "air conditioners + supply system + exhaust unit" allows you to create an ideal climate in the whole cottage, however, it significantly increases energy consumption. If you want to save on electricity bills, it is better to choose. Thanks to this special device, the heat of the exhaust air is transferred to the cold supply air, that is, there is no need to waste electricity to heat the flow coming from the street. According to experts, using a recuperator can save up to 70% of energy.
Comparative table of technical characteristics of different ventilation and air conditioning systems
|
System conditioning |
Price,rub. | Advantages | Flaws |
|
Classic conditioning (split systems) |
|
the ability to individually control the temperature in each room |
|
| Multisplit systems |
|
|
|
| MiniVRV systems |
|
|
|
| Conditioningany type+ supplyventilation |
|
|
|
| Conditioningany type+ supplysystem+ exhaustinstallation |
|
|
|
|
|
|
|
| Central air conditioner(supply system,which includesair conditioning section) |
|
fresh air mixture |
|
| Central air conditioner+ exhaust unit |
|
|
|
The air conditioner is not intended for an air exchange device, it cleans and cools the environment in an enclosed space. But worn out ventilation shafts apartment buildings, installation of sealed plastic windows they deprived the apartment of natural ventilation. The air in the room becomes unhealthy, there is not enough oxygen, and the proportion of carbon dioxide increases. Can an air conditioner for an apartment be supply air?
It has not yet been possible to combine the two functions of air preparation in a full-fledged mode. The most best systems can only use the air supply from the street for 30% of the total productivity. At the same time, the air conditioner becomes much more complicated and the price rises.
For houses and apartments, you can use only single-block air conditioners, of various modifications, split systems. They serve to ensure the regime on an area not exceeding 100 m 2. We will not consider cassette and column air conditioners.
Duct air conditioner with fresh air supply
Device channel system two-module. One compressor-condensing unit is located outside the perimeter, the evaporative unit is located inside the premises. They are interconnected by copper tubes with freon and electrical wiring. The evaporating unit can be hidden in the cladding of the room. Air conditioners with the function of inflow of fresh air from the street produce air exchange into the room for 2-3 hours. Physiologically, the air becomes healthy, oxygenated. These air conditioners include systems from Daikin “Ururu Sarara”. Hitachi and Haier created their models with fresh air.
The technology for purifying and mixing air streams is complex. In a special block outside the perimeter, the air taken from the street passes through a manganese catalyst, adsorption of impurities, including odors, occurs. There is a filter at the entrance to the air conditioning system, which retains small debris, insects and other external dirt. After that, the gas streams are mixed and passed through a photocatalytic filter, where they are biologically disinfected. The clean air is enriched with vitamins and hyaluronic acid. The healing product is delivered to the premises.
Duct air conditioner with fresh air admixture
The apartments use multi-split systems. They represent an installation with one unit placed outdoors, there can be 2-4 indoor modules. The system is equipped with an additional device for preparing air from the street. In such air conditioners, the intake of fresh air does not exceed 10% of the total volume in the circulation system. A specialist can install and correctly calculate a multisystem. At all exit points, the air parameters will be the same. This is the main disadvantage of a multipoint split system. More than 4 sampling points are not provided, because it is difficult to balance such a system in terms of performance.
A split-system with a wall-mounted indoor unit operates using a mixture of air from the street. But at the same time, the external unit of the air conditioner is modified, a fan and a mixing chamber are used. An air preparation unit is installed next to the perimeter, providing winter heating and a coarse mesh for cleaning debris and living creatures.
Air conditioner that takes air from the street
The channel split system uses the supply circuits most competently. Does this air conditioner take air from the street? One remote unit is located outside the circuit, the evaporators are connected to it by piping, installed in a false ceiling or false wall. An outdoor air preparation unit is used, which is supplied to the system in several places. The condition is that there is enough space behind the wall or under the ceiling to accommodate the equipment. The system is programmable, regulation is carried out by an electronic unit. The unit for preparing the air flow from the street and the duct air conditioner have different control panels. The addition of fresh air can be 30%. As a result of the renewal, the balance of carbon dioxide and oxygen content changes.
Air conditioners with fresh air supply for an apartment
Another type of split systems is the supply and exhaust air conditioner in the product line from Hitachi, they are not very powerful, the air exchange reaches only 8 m 3 per hour, but this amount is enough for a bedroom. The Hitachi RAS-10JH2 air conditioner is an example of a supply-and-exhaust split system. The model has an inverter compressor, 2 pipes are used - supply and exhaust. The air is removed forcibly, fresh air from the street can be heated. The control panel has separate options for supplying air from the street and removing waste. One mode is selected, then the system is adjusted to an equilibrium state.
Haier offers 2 premium air handling units: Aqua Super Match AS09QS2ERA and LIGHTERA HSU-09HNF03 / R2 (DB). In these units, the supply air system is an additional option. But having bought the equipment, it is possible to provide air renewal with a flow rate of 25 m 3 / hour. Both models of air conditioners have a built-in function for mixing air from the street. For this, the external block has a forced-air fan and a mixing chamber for two gas streams. Flexible hose with street air can be introduced directly into the room in one way or another.
Rules for placing block air conditioners with air supply from the street
When installing the evaporators on the ceiling, it is important that the cool air flow does not reach the area where people are located. Therefore, narrow slotted blinds are used. The higher the ceiling, the better the counter gas flows are averaged. In a split duct system, a distance between normal and false ceiling not less than 25 cm. The same applies to false walls, behind which channels pass.
In any case, ducted air conditioners or split systems with fresh air inflow will cost more at a price, and it is more difficult to operate than a separate supply and exhaust system and air conditioner. Devices 2 in 1, naturally, have somewhat truncated capabilities.
Fresh air conditioner
