Our Customers often ask: “Is there an air conditioner that takes air from the street?” Yes! Such air conditioners exist. Here we will take a closer look at air conditioners that take air from the street.
Fresh air conditioner Daikin Ururu Sarara
One of the leaders in the Premium segment - air conditioner with forced ventilation from Daikin. The Daikin FTXT RXR Ururu Sarara series of air conditioners carries out air intake from the street in a volume of up to 32 m³/hour through a separate hose, which comes complete with the split system. This series includes 3 air conditioners on an area of 30, 40 and 50 sq.m. This is not a publicity stunt, air is actually supplied to the room, and only ventilation mode is possible without cooling or heating the air.
The uniqueness of the air conditioner lies in the fact that it is able to humidify the air when the air conditioner is operating in heating mode. This prevents the air from drying out in the apartment, bedroom or children's room. Outdoor unit It has a special design that allows it to take moisture from the outside air and does not require any containers for adding water.
In 2015, an updated series of air conditioners with supply air was released - Daikin FTXZ-N RXZ-N Ururu Sarara. Supply air conditioner has all the same unique characteristics, has become more energy efficient and quiet, which allows it to be used in bedrooms.
The air conditioner Hitachi Air Exchanger series is equipped with an air supply system from the street. The system filters outdoor air, removing carbon dioxide, formaldehyde, odors and bacteria, and delivers it indoors. This series includes 2 air conditioners on an area of 25 and 35 sq.m. The supply air conditioner from Hitachi is quite quiet (from 24 dBA), equipped with inverter control of compressor power, a Nano Titanium air purification system and an air quality sensor. The price for this air conditioner with inflow fresh air democratic, high quality, can be recommended for installation in bedrooms and children's rooms.
Duct air conditioner with the regime supply ventilation allows for the introduction of fresh air from the street through a separate air duct. This system requires more careful selection and calculation. intended for hidden installation, and air is supplied to the rooms through air ducts, the cross-section and length of which are calculated during design. When choosing this air conditioner with a forced ventilation function, you need to understand that you need to find a place for it in the apartment and provide access for service- provide a service hatch.
If the room is air conditioned, keep doors and windows closed. Otherwise, the load on the equipment increases and its efficiency decreases. The amount of oxygen in the room quickly decreases, people begin to feel unwell: it hurts their eyes, they have a headache. Therefore, periodic ventilation is necessary. Air conditioners with an influx of fresh air relieve owners of worries about ventilation.
Air intake from the street
The air conditioner takes in air from the street simultaneously with cooling (heating). Therefore, fresh air is delivered at the required temperature. Some models of window air conditioners or split systems for apartments are equipped with a mixing function. On average, a window monoblock mixes about 6 cubic meters of air per minute.
Wall-mounted air conditioners with air intake are equipped with the following components:
- air valve and filter;
- blower fan with speed controller;
- external grille;
- heating element (for heating the air in the cold season);
- The air duct is thermally insulated.
To ensure that the air conditioner takes air from the street, installers install an additional air duct route. Therefore, the installation of such equipment is somewhat different from the usual one. Wall panels with air mixture are still new. They began to be produced several years ago and only by the largest manufacturers. The mixing function significantly increases the cost of the equipment. Some models are equipped with a humidification function supply air, others automatically detect dangerous levels carbon dioxide and start the mixture.
Duct systems with air intake
All duct air conditioners are equipped with this option. Filtered and brought to comfortable temperature outside air distributed through the air duct system into the premises.
Such air conditioners are mounted hidden - air ducts and units are hidden under a false ceiling. Therefore, they do not affect the design of the premises in any way.
The average performance air conditioner model with air intake provides an inflow of 9 cubic meters per minute.
Cassette air conditioners with air intake
Among cassette split systems there are models with air admixture. The most powerful of them provide circulation up to 30 cubic meters per minute. Such air conditioners serve up to 100 square meters. Cassette splits are almost no different in design from wall mounts. But the format of the indoor unit is designed for installation in a suspended ceiling.
In the conditions of modern sealed apartments, questions related to inefficiency, namely the lack of influx of street air masses, are increasingly arising. Due to the lack of fresh air, in such rooms the oxygen content in the air mixture is significantly reduced, which leads to a sharp decrease in the mental and physical activity of the people in it.
Today this problem is solved by creating a forced
Equipping premises with ventilators and wall supply valves, as well as specialized climate equipment - air conditioners with fresh air. To be fair, it should be said that it is more correct to call this equipment not with an influx, but with a mixture of street air, and the volume of air masses supplied to the room usually does not exceed 40%.
Design and principle of operation of an air conditioner with inflow
with an influx of fresh air come in various designs. The most popular among our compatriots are models with wall-mounted and duct-mounted indoor units. The device of such climate systems not much different from standard air conditioners, with the exception of the air duct connecting the indoor and outdoor units and the filtering system for the incoming air mixture. Duct air conditioners of this type are most often equipped with an electric or water heater, which heats the supplied air flow during the off-season.
An air conditioner with supply ventilation mode for an apartment consists of:
- Evaporative (indoor) unit, which includes a heat exchanger, fan, filtration system, and electronic control unit.
- An external unit, including a compressor, a condenser heat exchanger, a cooling fan and an additional suction turbine, as well as a mixing chamber.
The mixing of air masses occurs as follows: by means of a suction fan, fresh air is supplied through an air duct to the evaporation unit, where it enters a special chamber and mixes with air from the room. After which, the air mixture passes through the filtration system and undergoes additional processing (heating, humidification, dehumidification, etc.), which depends on the design, specified mode and model of the split system. Only after processing the air mixture is supplied to the room. Microprocessor control allows you to automatically keep under control the user-specified parameters of the air mixture, as well as the strength of the air flow.
Scope and advantages of split systems of this type
Air conditioners with a function are most often used in sealed residential buildings equipped with modern metal-plastic windows, as well as in rooms with special requirements for air exchange and air mixture quality.
The main advantages of a fresh air conditioner are:
- Year-round provision of serviced premises with an influx of fresh air. The competent approach of manufacturers has made it possible to create climate control equipment that can operate even at low temperatures.
- High degree of purification of street air. Open window, will provide the necessary influx of air masses, but its quality, especially in a metropolis, leaves much to be desired. Split systems are equipped with effective filter elements, thanks to which clean and fresh air enters the room.
- Microprocessor control makes it possible to automatically maintain the specified temperature and humidity characteristics and device performance.
Factors to consider
Despite the rather serious advantages of this type, air conditioners with forced ventilation for apartments have not become particularly popular among our compatriots, and there are several explanations for this:
- Increased noise level, the source of which is additional fan. In Russia the noise level is standardized sanitary standards, which clearly state that the level of penetrating sound exposure into residential premises cannot be higher than 30 dB at night. Most common models are like this climate control technology have an indicator on the verge of this value.
- A household air conditioner of this type cannot fully replace the ventilation system.
- High cost. The price of such a device is approximately 15-20% higher than similar power climate control equipment with inverter control.
The choice of a split system of this type should be entrusted to professionals, since the implementation proper air exchange and synchronization ventilation system with an air conditioning system is possible only with proper calculation and assessment of the required volume of supply air.
The air conditioner is not intended to be an air exchange device; it purifies and cools the environment in a confined space. But the ventilation shafts have fallen into disrepair apartment buildings, installation of sealed plastic windows deprived of apartment natural ventilation. The indoor air becomes unhealthy, there is not enough oxygen, and the proportion of carbon dioxide increases. Can an air conditioner for an apartment be supplied?
It is not yet possible to combine two air preparation functions in full mode. The most best systems can only use the air supply from the street at 30% of the total capacity. At the same time, the air conditioner becomes much more complicated and the price increases.
For houses and apartments, you can only use single-block air conditioners, various modifications, and split systems. They serve to ensure control over an area not exceeding 100 m2. We will not consider cassette and column air conditioners.
Duct air conditioner with fresh air supply
The duct system has a two-module design. One unit, the compressor-condenser unit, is located outside the perimeter, the evaporative unit is located inside the room. They are connected to each other by copper tubes with freon and electrical wiring. The evaporation unit can be hidden in the lining of the room. Air conditioners with the function of bringing in fresh air from the street exchange air into the room for 2-3 hours. Physiologically, the air becomes healthy, saturated with oxygen. Such air conditioners include systems from Daikin “Ururu Sarara”. Hitachi and Haier have created their own models with fresh air.
The technology for cleaning and mixing air flows is complex. In a special block outside the perimeter, air taken from the street passes through a manganese catalyst, adsorption of impurities, including odors, occurs. At the entrance to the air conditioning system there is a filter on which small debris, insects and other external dirt remain. Afterwards, the gas streams are mixed and passed through a photocatalytic filter, where they are biologically disinfected. Clean air enriched with vitamins and hyaluronic acid. Healing product supplied to the room.
Duct air conditioner with fresh air mixture
The apartments use multi-split systems. They represent an installation with one block placed outside; there can be 2-4 internal modules. The system is equipped additional device for preparing air from the street. In such air conditioners, fresh air intake does not exceed 10% of the total volume in circulation system. A specialist can install and correctly calculate the 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 selection points are not provided, because it is difficult to balance such a system in terms of productivity.
Using air from the street, a split system with a wall-mounted indoor unit operates. 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 near the perimeter, providing winter heating and a mesh rough cleaning from garbage and living creatures.
Air conditioner that takes air from outside
The duct split system uses supply circuits most competently. Does this air conditioner take air from outside? One remote unit is located outside the circuit, the evaporators are connected to it by piping, mounted in a suspended ceiling or false wall. An air preparation unit from the street is used, which is supplied to the system in several places. Condition – space behind a wall or under a ceiling sufficient to accommodate equipment. The system is programmable, regulation is carried out by an electronic unit. The installation for preparing the air supply from the street and the ducted air conditioner have different remote controls for regulation. The addition of fresh air can be 30%. As a result of renewal, the balance of carbon dioxide and oxygen content changes.
Air conditioners with fresh air supply for apartments
Another type of split system is a 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. An example of a supply and exhaust split system is the Hitachi RAS-10JH2 air conditioner. The model has an inverter compressor and uses 2 pipes – supply and exhaust. The air is removed forcibly, fresh air from the street can be heated. The remote control has separate options for supplying air from the street and removing exhaust air. One mode is selected, then the system is adjusted to an equilibrium state.
Haier offers 2 models of premium air conditioners: Aqua Super Match AS09QS2ERA and LIGHTERA HSU-09HNF03/R2(DB). In these settings supply system air - additional option. But by purchasing equipment, you can 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 outside. For this purpose, the external unit has a pressure fan and a chamber for mixing two gas flows. 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 placing evaporators on the ceiling, it is important that the flow of cool air does not reach the location of people. Therefore, narrow slotted blinds are used. The higher the ceiling, the better the oncoming gas flows are averaged. In a duct split system, a distance between normal and suspended ceiling not less than 25 cm. The same applies to false walls behind which there are channels.
In any case, duct air conditioners or split systems with fresh air will be more expensive and more difficult to operate than a separate supply and exhaust system and air conditioner. 2 in 1 devices, naturally, have somewhat truncated capabilities.
Air conditioner with forced ventilation
Among all types of climate control systems, the ducted air conditioning system is of particular interest, providing the supply of treated air through a network of air ducts in several neighboring rooms without cluttering the interior with unnecessary equipment modules.
Design and principle of operation of the channel system
Like any split system, a duct system consists of two modules: compressor-condenser (external) and evaporative (internal), which communicate with each other copper pipeline with freon and electrical wires. The external module is installed outside the building, and the installation of the indoor module involves several placement options:
- in a false ceiling;
- in a false wall;
- in the closet, in the attic, in the utility room.
The hidden installation of the evaporator unit makes the use of air conditioners of this type very practical solution for original design projects.
There are certain features in how a duct air conditioner is designed and operates. Such devices are supplied without finished system air distribution. It is provided when creating a project.
Design work and subsequent work or premises for semi-industrial purposes are carried out at the construction stages or overhaul of this object.
Iron or flexible air ducts are connected to the adapters (special openings) of the indoor module, which are connected to adapters with grilles extending onto the surface of the ceiling or wall. Air circulation occurs through them. The air ducts themselves are sound and heat insulated to eliminate excess noise and the formation of condensation on the structure.
The air intake goes through the exhaust adapter through the air ducts and enters the indoor unit. There he passes strainer, the evaporator and the cooled one exits into the air ducts connected to the supply adapter.
One of the features of how a ducted air conditioner works is the temperature of the air leaving the indoor unit. She's quite cold. To minimize the temperature difference between room and cooled air, it is necessary to select the correct supply grilles. The best option will become slotted, since it is this type is able to produce cold streams in thin streams and mix them with the warm air in the room as quickly as possible.
Supply unit and fresh air addition
If there is a need for air flow from the street, then the ducted air conditioning system has the ability to take in air from the outside. To organize such a process, you will need another air duct to which it is connected and cut into the supply adapter. So that street air enters several local points The premises, usually a ventilation pipe (air duct) coming from the supply unit, are divided through a distribution tee into the required number of branches.
The supply unit is a standard module with holes on the sides. It consists of:
- fan;
- heating element;
- electronics unit;
- pocket filter;
- flaps.
In summer the heating element does not work, but in autumn and winter it heats the incoming air to the required temperature. Dampers are needed to block the outlet of the installation, through which, in standby mode, cold flows can enter the air ducts and then into the room. A pocket (bag) filter is a single-stage filtration system used in supply ventilation systems. It cannot be regenerated, so most often it is replaced with a new one.
U air handling unit and a ducted air conditioner with fresh air mixed in, two different remote controls. The operation of the supply module is regulated separately.
But it is worth keeping in mind that with duct air conditioners, the influx of fresh air is only 30% of the total air circulating through the system air flow. No ducted air conditioner can mix in 100% of the outside air.
Work in winter
The ducted air conditioner has the ability to operate year-round. IN in this case the outdoor module is installed in a room where the minimum temperature values are -3-5°C and there is space for warm air to escape. If installation options external unit is not in the room, then it is simply equipped with a “Winter Start” device, which consists of three separate devices: compressor oil heating, fan speed control and drainage heating. But energy consumption will increase significantly.
At correct selection air conditioner power and correct network installation ventilation pipes The period of trouble-free operation reaches 10-15 years.
Types of duct air conditioners
All manufacturers produce models that operate either cold only or cold/heat. Duct air conditioners with a mixture of fresh air can be with inverter or non-inverter type of compressor control. These split systems differ not only in cooling capacity, but also in blowing power, that is, the pressure of the outgoing flow. There are low-pressure, medium-pressure and high-pressure duct air conditioners. From the force of pressure ( static pressure) that the fan creates depends on the selection of the length and configuration of the air ducts.
Low pressure air conditioners
This air conditioner has a maximum static pressure of 45 Pa. It can process air in one room, and the length of the ventilation piping is no more than a meter. Low-pressure models are installed in hotel rooms, small offices and apartments.
Medium pressure air conditioners
For medium-pressure systems, the pressure force can reach up to 100 Pa, and the total length of the air ducts is measured in tens of meters. They are considered the most popular, as they best satisfy the needs of apartments with several rooms, small cottages, cafes, medium-sized offices and shops.
High-pressure air conditioners
The pressure force of such models is up to 250 Pa. The length of air ducts can exceed a hundred meters, and their configuration can be complex and highly branched. They install high-pressure duct air conditioners in large offices, conference rooms, large restaurants and residential buildings with many rooms.
To remove condensate that has accumulated during operation of the device, a ducted air conditioner with high strength pressure is usually equipped with an additional drain pump. These devices have the highest performance compared to low- and medium-pressure ones. All of the listed characteristics help distribute air even to remote rooms without any losses and in full.
Duct air conditioners with a mixture of fresh air are devices with high pressure pressure.
What you need to know when buying
There are practically no shortcomings in the quality of operation of this climate control equipment, with the exception of the following nuances.
The ceiling height in the room must be at least 3 meters, otherwise the strong air currents coming out of the adapter with the grille will not have time to be distributed throughout the space, which will cause colds.
Duct air conditioner with all additional designs mounted in the space between the ceiling and the false mezzanine. Its height must be at least 25 cm.
IN different rooms Only identical parameters can be supported. This is not entirely convenient if one of the zones is located on sunny side where more is required low temperature, and the other - in the north, where average indicators are sufficient.
Installation of duct air conditioner
If you do not want to spoil the facade of the building with many external blocks, and clutter the rooms with internal modules, the right decision will be the installation of a ducted air conditioner, both in an apartment and in a private house.
In theory, everything is simple - compliance with the stages of work should ensure normal functioning device in the future. But there are some difficulties in which installing a ducted air conditioner with your own hands becomes simply impossible, namely:
- laying a network of air ducts with calculation of their cross-section and high-quality sound and heat insulation;
- calculation of power, static pressure, air capacity;
- providing access to indoor unit for subsequent preventive maintenance;
- cutting off some rooms (toilet, kitchen) from the air intake system;
- installation of an air supply unit, if a high-pressure ducted air conditioner with a supply of fresh air is required.