How to choose the air conditioner?

Air Conditioner - a device which in addition to the traditional cooling air in the room is also used for heating in cold weather, ventilation, drainage, and additional purification of air through the built-in or optional filter is installed. Modern manufacturers offer consumers many varieties and models of air conditioners: from small mobile devices for small rooms to entire systems for large trading floors. The main way to control the temperature in the room - is to install air conditioning. Invented this naipolezneyshaya car was in the early 20 th century in the United States. Father of all air conditioners became the inventor Willis Carrier, who built a refrigeration machine for the printing plant in Brooklyn, New York, though she had intended to fight the humidity. And already in 1924 in Detroit had the first system is for cooling the air in one of the stores. What kind of air-conditioners exist and what is better? 1. Mobile air conditioning - is a conditioner that is installed in the room, bringing a special corrugated hose out the window, door, ventilator or ventilation shaft. Mobile air conditioner takes the air out of the room and divides into two streams: the hot and cold. Hot is removed from the premises through flexible tubing, and the cold stays in the room. Sometimes, mobile air conditioners are equipped with filters, purifying the air of dust, and a built-ionizer. Portable air-conditioners on the market products of companies DELONGHI, King-Post, AIRWELL, ELECTRA, TOSHIBA. Advantages and disadvantages of mobile air conditioner can roll on the floor, as it allows a flexible hose, move to another room or part of the house, take out to the country. Complicates the use of mobile air conditioning need to periodically empty the container of the condensate, which is formed by cooling the air. It's very simple to install and cheap cost air conditioning. 2. Cassette air conditioners are installed above the suspended ceiling. Blocks of modern cassette air conditioners have an extremely low altitude and direct the flow of conditioned air at two or four directions. In contrast to channel air-conditioner cassette distributes cooled air through the lower part of the block Advantages and disadvantages The main advantage of cassette air-conditioner - stealth, because only visible grille, uniform distribution of air flow in four directions, allowing only one cassette air conditioner to cool a large room (with the use of wall split-systems to achieve the same effect would have to use less power conditioner 2.3). 3. Tower air conditioners are used where most needed cooling capacity, there is no stringent requirements to the design room Column conditioners are heavy and are installed on the floor. Tower air conditioners require a relatively large area for placement because they pose a strong flow of cold air and do not be in the immediate vicinity of the air conditioner. Precision air-conditioners are a variety of column of air conditioners. They are used in computer rooms, telephone exchange, that is where a lot of expensive electronics. Advantages and disadvantages Column conditioning all year round provides optimum temperature, humidity, cleanliness and air mobility, ability to work in a wide temperature range of outdoor air. 4. Wall split systems split system - it's air-conditioning, consisting of external (condensing) and internal (evaporative) blocks. External power is usually mounted on the facade of buildings, inside - inside the room and placed on a wall, floor, ceiling, including those embedded in the ceilings. Split systems have a wide range of power and are designed to cool rooms of various sizes, including some located near (eg, multi split system). Apart from the usual split-cooling systems can operate on heating, and some models have additional equipment (included with the device or installed at customer's request), ionizers, and a whole range of filters, further cleaning the air. Air conditioners are easy to operate and safe to have a remote control and automatic operation, even in case of sudden power failure, their settings and provide a serviced room optimal climatic conditions. Like all air conditioners (excluding mobile), split systems require professional ustanovki.Liderami in the manufacture of wall split-systems are Japanese companies DAIKIN, GENERAL FUGITSU, MATSUSHITA, MITSUBISHI. Production of these stamps capacity of 2,5 kW (including standard installation) costs from $ 1000. Korean manufacturers of air conditioners will cost 10-20% cheaper. Advantages and disadvantages of this type Air cools only the air that is in the room. The design of these air conditioners have a number of advantages, including high efficiency, low noise, freedom to choose the location and type of indoor unit. The main advantage of the wall split system - the relative simplicity of design, allowing us to obtain a sufficiently low cost of air conditioning in a quick and easy installation. The disadvantage of the wall split system can be considered impossible in the filing room of fresh air. 5. Multi split system - called air conditioning, in which a single outdoor unit operates several blocks to be placed indoors. Such a system is most useful in the case when the task is to condition several nearby facilities (the room in an apartment or office). Each indoor unit and maintains the temperature inside a separate room independently. That is such a split system replaces multiple standard split systems and is the most suitable option in cases where the placement on the facade of a large number of external units is undesirable. These air conditioners allow you to use different types of indoor units: wall, floor, ceiling, cassette, duct, which perfectly fit into any, even the most sophisticated interior 6. Floor and Ceiling of a split system air conditioning in large rooms without suspended ceilings require HVAC equipment with high productivity. These include the floor-ceiling systems that are mounted on the ceiling or wall to the floor (mounting variation in the interior: to build it into a niche wall as well as placement near the floor (0,5 m) and the ceiling) The flux of air in the first case is directed along the ceiling in the second - up. This design evenly distributes the cooled air into the room and avoid exposure to direct flow to the people. Floor-ceiling systems used to cool the space of complex shape 7. Duct air conditioner you need a channel air-conditioner if you want to simultaneously cool several rooms. Duct air conditioner installed in suspended or boarding the ceiling, which completely hides the inner block. Distribution of cooled air conditioning channel is carried on the system insulated ducts, which are also placed in the ceiling space. Power conditioning duct is 12-25 kW, which is sufficient to cool a small office or 4-5-room flats. Advantages and disadvantages The principal difference between channel air-conditioner - the possibility of fresh air in the volumes required for a full ventilation. Thus, a single channel air-conditioner can solve the problem both ventilation and air conditioning the whole office, apartment or cottage. Only need to take care of the correct calculation of air, the selection of the channel on the air conditioner cooling capacity and static pressure, the installation of electrical or water heater for heating outside air in winter. Ducted air conditioners produce virtually all manufacturers, their value depends on the variant of the ventilation layout, applied automation and the advice is better to turn to the professionals. 8. Inverter air conditioner in the traditional split-systems, engine compressor has two modes - on and off. Therefore, conventional air conditioner operates with short pulses in time - the engine is turned on full power, bring the indoor temperature to the desired on and off until the temperature again unchanged. Otherwise operates the inverter power is continuously adjustable. Once the air has acquired the required temperature so the air conditioner is turned off, but simply reduces the engine speed and maintains the temperature at the desired level. This scheme allows to significantly reduce energy consumption - from 25 to 45 percent, depending on the air conditioner. Most of the time the air conditioner fan runs at low speed and therefore noise from the air conditioner is minimal. Lack of frequent inclusions conditioner at full capacity povyshaeet comfort for people in the room - most of the time the airflow minimalen.V inverter air conditioner main unit air conditioner - the compressor last longer. The intensity of the destructive impact on every compressor start-up cost at least half an hour of continuous air conditioner operation. 9. VRF-systems Climate Technology with a variable refrigerant flow (Variable Refrigerant Flow) consists of several indoor and outdoor units, where the main machinery. Internal blocks that are cooled, heated, cleaned of dust and distribute conditioned air into the room, connected to the outer two or three pipes, which circulates Freon, and manage communications. The air-conditioner VRF-system controls the built-in multi-system automation. The kit may also include plenum ventilation system providing fresh air in the room. Conditioners VRF-systems have begun a new trend in the development of central air conditioning. Ease of use is that the length of inter-block pipelines and communications up to 100 meters and the indoor units can be located from each other with a vertical drop of 50 meters. Therefore, the outdoor unit VRF-systems can be installed in the basement, roof, technical balcony, attic, without prejudice to the performance of equipment and exterior of the building. Internal devices may be various types: wall mounted, cassette, duct, floor, ceiling and columns. The most recent developments allow the use within one VRF-systems to 30-32 internal and 3-4 external blocks. Advantages and disadvantages The main advantage of VRF-systems - energy efficiency. Each indoor unit VRF-system paired with electronic thermostatic valve. This device changes the volume of refrigerant coming from the general route to the evaporator of the indoor unit, depending on heat load, that is, the need for cold or heat. Significant energy savings achieved and by the ability of VRF-systems to reduce the performance of the outdoor unit with a decrease in heat load in the room. So, while working on one room out of ten system consumes only 10% of its electricity from full power. Energy consumption is also reduced as a result of joint work VRF-systems and supply and exhaust ventilation system. It is usually a plate heat exchanger or a rotary heat exchanger to cool the feed to the premises outside air in summer, heated it in the cold season, as well as optimize the moisture due to heat, cold and humidity, leaving the air-conditioned room. 10. Chillers and fan coil units in the translation from English chiller - a refrigerator, a fancoil consists of two words: fan - and fan coil - heat exchanger, which together can be translated as fan cooled heat exchanger with water. The main parts of the chiller are evaporator, condenser and a compressor connected by pipelines with Freon. The substance turns to a gaseous state, taking away heat from the evaporator water washing. In this case, it can be cooled to 5-7 ° C. In the condenser, on the contrary, a pair of refrigerant into a liquid with heat, so that the capacitor must be cooled. Therefore, the chiller is carried to the street or placed in rooms where heat dissipation is required. Chiller and fan coil units connected to a pipeline through which coolant flows as ordinary water. Chiller cools water, then it enters the fan coil units, located in the rooms. Capabilities of the system as a split-system, chiller fan coil units can operate in 2 modes: cooling only, cooling plus heating (in this case, the chiller is called reversible, and the regime - the regime of the heat pump). When you work in the first mode water first cooled by the evaporator to a 5-7'S then enters the fan coil, which cools the air supplied to the fan. In the heat pump water direct to the condenser, where it is taking away from him warm, heated to 45-55'S and the pipeline is fed into fan coil, through which heats the air in the room. Chiller - a refrigerator that is used in central air conditioning systems. It cools or heats the coolant (antifreeze and water) and delivers it to the pipeline system in fan coil or other heat exchangers. Fan coil - a heat exchanger with fans. He picks up the heat or cold from the coolant and heats or cools the room. Advantages: The system of chillers - fan coil units have significant benefits for air conditioning facilities with plenty of space as a single chiller, you can attach a large number of fan coil units. You can specify not only the overall thermal regime of the entire system, but also regulate the operation of each fan coil to the remote mounted on it, while maintaining in each room desired temperature. The distance between the chiller and fan coil units is not limited. For the installation of this system involves the usual gazovodoprovodnye pipes with insulation. When mounted on a single object multiple chillers they can be connected into one system and to make management from one console. Disadvantages: high cost.