Defeat traditional air conditioners! Analysis of the advantages and disadvantages of home central air conditioners

    From hand fans to electric fans, from traditional air conditioners to household central air conditioners, this is the trajectory of the development of the times and a milestone in home life. Today, traditional air conditioners are still popular, and household central air conditioners are not to be outdone, closely following, and have the tendency to replace them. All this depends on our national economic level and home lifestyle, and this is only a matter of time. The future popularization of household central air conditioners is necessary.

    In addition to living standards and lifestyles, more people are willing to start from reality and see whether home central air conditioning is good or not. Many people hold a wait-and-see attitude and finally invest in home central air conditioning systems. Below we will comprehensively analyze the advantages and disadvantages of home central air conditioning for everyone. In addition to the common advantages and disadvantages of home central air conditioners, we also start from the three most common types of home central air conditioners, and analyze the advantages and disadvantages of home central air conditioners one by one, so that you can better choose home central air conditioners.

    Advantages of home central air conditioning: 

    1. High energy consumption ratio;

    2. Small temperature difference, very comfortable;

    3. The temperature of each room can be adjusted freely, which is more energy-saving;

    4. Water pipes take up less space and are easy to decorate;

    Disadvantages of home central air conditioning   

    1. The system is complex, the cost is high, and the construction quality is not high, there are hidden dangers of water leakage, and maintenance is difficult;

    2. It is impossible to directly introduce fresh air;

    3. Affected by the climate, it cannot work normally when the temperature is below -5℃, and auxiliary heating devices need to be installed, which also consumes some electricity;

    Analysis of the advantages and disadvantages of household central air conditioning

    Home central air conditioners have many advantages that home split units cannot match.  

    ① It is suitable for use in large-sized apartments with a construction area of ​​100 to 600m2, duplex houses, commercial and residential buildings, villas, etc. It solves the contradiction that the installation of split air conditioners is inconvenient due to the diversity of room layouts.

    ② To meet the requirements of beautifying the living room and coordinate with the high-end interior decoration, the indoor unit or air duct of the household central air conditioner is concealed and integrated with the decoration in a harmonious and unified manner.

    ③ The household central air conditioning system can use humidification technology to control the indoor relative humidity between 40% and 70%, which can better protect the human skin and respiratory system. The indoor unit runs quietly, the temperature is adjustable, the air supply angle is good, the air volume and temperature are evenly distributed, and the temperature difference in the same space is about ±1℃. The appropriate temperature, humidity and wind speed make people feel more comfortable.

    ④High technology content, the whole unit is controlled by a microcomputer, which can realize multi-function control, and use temperature control probe to sense the temperature of each room, so that each room can adjust the temperature separately to save energy. The room control adopts LCD controller control, LCD display, with timing, sleep mode, temperature control and other functions, which is easy to operate and manage. Concealed air purifier can purify indoor smoke, foul air and some toxic gases.

    ⑤Easy to install. The outdoor host is small in size and can be placed flexibly. It can be placed in hidden places such as the ground, roof, balcony, etc. The system host is equivalent to a small central air conditioner and can be installed in hidden places such as balconies or storage rooms. The host adopts unit operation, and each household has its own system and uses it independently. The operation noise is extremely low, ensuring a quiet home environment and no interference between neighbors.

    ⑥ The indoor unit of household central air conditioning can use water as the energy medium, which will not cause Freon leakage problems and protect the atmosphere; the condensed water discharged by the indoor unit is uniformly discharged to the bathroom, and there is no dripping outdoors, which protects the community environment, comprehensively improves the level of community property management, and is conducive to environmental beautification and property management.

    ⑦ The unit is safe and reliable. The indoor fan pipe is composed of high-quality galvanized steel plate, high-efficiency and low-noise fan motor and high-quality coil. The pressure resistance of the refrigerant (hot) water pipe is above 0.1M. The pipes are mostly made of UPVC engineering plastic water pipes or PPR and PPC thermoplastic pipes. The pipe joints are connected by welding, which will not cause refrigerant (hot) water leakage. The insulation materials of the pipes are mostly made of PEP or rubber and plastic insulation materials that are resistant to bending, waterproof, and have low thermal conductivity. The main unit adopts a fully enclosed refrigeration system without joints, with a very low failure rate and a very small maintenance workload. The continuous service life is twice as long as that of household air conditioners, reaching 15 to 20 years.

    ⑧ The rated voltage of the unit is mostly 220V, single-phase (or 380V, three-phase), 50Hz, suitable for home or commercial and residential use. Each indoor unit can adjust the temperature and air volume at will through an independent temperature controller. Each room member can adjust according to the fresh and comfortable air requirements. The main unit can be automatically operated according to the actual load, saving energy and operating costs. The intelligent operation saves 30% of electricity compared to household air conditioners.

    Features of one-to-one series household central air conditioner

    In terms of the connection method between indoor and outdoor units, household central air conditioners can be divided into two types: one is a one-to-one structure, and the other is a one-to-many structure. The installation effect, operating principle and comfort level of the indoor units are the same. The difference lies in the power, size and number of the outdoor units.

    The characteristic of a series of household central air conditioners is that one outdoor unit is connected to one indoor unit. The number of outdoor units is the same as that of traditional air conditioners. They are small in size and can be installed in the reserved air conditioning positions in apartments, freeing up valuable space for the use of the "green balcony" at home. At the same time, the outdoor unit is prevented from interfering with daily life.

    The one-to-one structure of household central air conditioning is flexible in configuration. It can find a suitable solution for a one-room single apartment, living and dining room, two-bedroom, three-bedroom, or even duplex or villa. At the same time, the "one-to-one" structure air conditioner can also be mixed with one-to-many. For example, one-to-one central air conditioning is used in some rooms that are opened more frequently (living room and dining room), while multi-split is used in other rooms that are used more frequently (bedrooms).

    Classification and characteristics of one-to-many central air conditioners

    ☆ Duct machine

    One fixed-frequency outdoor unit and one fixed-frequency indoor unit deliver hot and cold air to each room (including kitchen and bathroom) through the air duct, which can easily introduce fresh air from the outside. It is also easy to centrally process the air, such as humidification and purification. If the design is reasonable and the air volume is evenly distributed, the whole house can basically have no temperature difference, realizing a central air conditioning system in the true sense. If the design is reasonable, the noise in each room will only increase by 1 to 3 decibels. The living room and bedroom do not need to have a suspended ceiling. The temperature of each room can be controlled above the temperature set by the main thermostat. If partition control is used, energy can be transferred to achieve energy saving and speed up the cooling and heating speed of the air conditioner. However, individual rooms cannot be opened, and more than 50% must be opened.

    The indoor unit is noisy, but it is concentrated (for example, if the indoor unit is installed in the kitchen ceiling, the noise is concentrated in the kitchen). Through noise reduction treatment, according to different installation conditions on site, the actual measurement is about 46 decibels, which requires very professional design and installation. Maintenance is convenient and concentrated, mainly unit maintenance, not involving the terminal system. The terminal is water-free and fluorine-free, and the operating environment is good.

    ☆ One unit to multiple units

    (1) Fixed frequency multi-split air conditioners concentrate split air conditioners into one outdoor unit, with a maximum of three compressors in one unit, and independent refrigerant systems; the exposed wall-mounted indoor unit is changed to a concealed type; it is difficult to introduce fresh air (a fresh air system needs to be installed separately, increasing costs and construction costs), which is a variation of split air conditioners. The fan noise in the bedroom increases by 7 to 14 decibels from low to high, and the maximum is 50 decibels. Each bedroom needs to have a ceiling that is more than 1.2m long, 0.6m wide, and 0.3m high. The kitchen and bathroom cannot be installed, and an inspection hole needs to be set up; each indoor unit needs to have a condensate discharge pipe. If it is not handled properly, it is very easy to overflow. The outdoor unit and each indoor unit are connected with copper pipes. If a pipe leaks fluorine, the entire ceiling needs to be dismantled to detect the leak.

    The refrigerant system is independent, just like the split unit, and can be turned on in a room separately, but the temperature difference between the indoor areas is large, which makes the central air conditioner meaningless. The circuit part has a common point; if there is a fault such as the external fan, the temperature probe of the external unit, the pressure protection or the partial short circuit of the electrical appliance, the whole machine will not be able to operate. The design and installation are similar to the split unit, which is extremely simple.

    (2) Fixed frequency and variable frequency one-to-many

    There are 1-2 variable frequency compressors or an additional fixed frequency compressor, which has a lot of radio frequency interference in the circuit, which has an impact on the human body and computer. The introduction of fresh air from the inspection hole, the ceiling and condensation water, and the use method and effect are the same as those of the multi-split unit; the branch of the fluorine pipe requires a reasonable design; the upper and lower floors share one machine, and the pipeline requirements are higher; it is easier to have a poor effect of the terminal indoor unit when it is fully opened.

    ☆ Hot and cold water machine

    Fixed frequency hot and cold water machine or variable frequency hot and cold water machine The reduction of large central air conditioner, the condenser is changed from water cooling to air cooling; the hot and cold water is sent to the fan coil by water pump. The introduction of fresh air, inspection hole, ceiling condensate discharge, and noise indicators are the same as those of multi-split units. However, hot and cold water pipes are added; due to the large temperature difference, the sealing problem is prominent, and water leakage will cause great damage to the decoration. In addition, the evaporator of large central air conditioner is regularly cleaned and pickled; there is no good solution for household hot and cold water machine, and the efficiency of hot and cold exchanger will be greatly reduced in long-term use. If it can be combined with the central water treatment system, the above difficulties can be overcome.