First, the determination of the type of air conditioner
Air conditioning is mainly divided into two categories: building air conditioning and vehicle air conditioning.
Building air conditioners have room air conditioners, unit air conditioners and central air conditioning systems.
The room air conditioner is divided into cold air type, electric heating type, heat pump type and heat pump auxiliary electric heating type according to functions. The model name is shown in the room air conditioner model identification table.
1. If it is only for the cooling and dehumidification of the living room, you can use the cold air type room air conditioner with lower price.
If it is a place where there is no need to cool down but the moisture is too large, you can use a dehumidifier.
If you want to use an air conditioner to heat the winter in addition to the summer cooling, you need to use an electric heater, a heat pump or a heat pump to assist the electric heating. However, it is uneconomical to use electric heating, and the heat pump type has limitations. The heat pump with automatic defroster needs to be operated at an outdoor temperature higher than minus 5 degrees (-5 °C) without automatic defrosting. Manual control of defrosting must be initiated at an outdoor temperature above 5 degrees above zero.
2, split type air conditioner, has the advantage of less indoor noise; but pay attention to a few points:
1 Installation engineering is complex and requires professional skills;
2 Since the indoor pipeline and the outdoor pipeline are docked at the site, it is not uncommon that the refrigerant leakage has to be filled with refrigerant before use every year;
3 prices are relatively high;
4 There must be enough space for outdoor unit installation.
3. If the room is small and the room is small, you can use the one-to-two, one-to-three-type split air conditioner of the “trailerâ€, among which the preferred inverter air conditioner unit is recommended.
Second, the determination of the cooling capacity of the air conditioner
For the height of 2.7 meters, the height of the ceiling is 2.4 meters, the window area is 1.8 meters and 1.8 meters, and there are standard rooms with good insulation and sealing. The cooling capacity per square meter of indoor area is 130 watts. The standard unit area cooling capacity, in actual use, needs to be corrected according to many factors such as city, orientation, operation mode, etc. The user can calculate the required cooling capacity through the correction coefficient table.
If you are annoyed with the correction calculation, you can estimate it by 160W per square meter, taking the most 12 square meters of the existing commercial housing as an example:
Cooling capacity = 160 watts / square meter X 12 square meters = 1920 watts;
Since the actual cooling capacity of the air conditioner is often lower than the nominal cooling capacity under the standard working conditions marked on the nameplate (the regulation can be less than 5%), the nominal cooling capacity to be purchased is slightly larger, and the nominal cooling capacity can be purchased. It is a 2000 W air conditioner.
Third, the brand and other
1, the domestic power supply status:
Before purchasing an air conditioner, it is necessary to understand the situation of the power supply in the home. Users of the old house should pay special attention to this. If your home is a 3A single-phase watt-hour meter, it is enough for lighting and color TV, refrigerator and washing machine. The air conditioner cannot be used until the meter and wiring are replaced.
A single air conditioner of more than 7000W requires three-phase 380 volt AC power. If you do not have this power supply, you can buy more than one single-phase air conditioner. Of course, this has to be used at the same time when the meter capacity is allowed.
2. To purchase energy efficient air conditioners:
When you purchase an air conditioner with a large energy efficiency ratio (EER), even if the price is higher, it is still affordable from a long-term perspective.
3. About other additional features:
The basic function of the air conditioner is to cool down or warm. The most basic requirement is safety. The necessary performance is quiet and energy-saving. If you improve these basic functions, add some automatic protection such as stop and restart, remote control, room temperature setting, timing. Operation functions such as shutdown and sleep mode operation are also necessary, and frequency conversion operation is one of the measures for energy saving. to
Others, such as mold-proof filter, ventilation type, etc. are commercial speculation, negative ions, activated carbon, etc. are not necessary to be added to the air conditioner, even if added, it can not prevent 'air conditioning disease'.
4. Brand selection:
Domestic air conditioners are now in line with international standards and are of comparable quality. There is no need to pursue imported original machines. The joint venture brand machine was originally produced in China. Of course, the brand is related to the quality, price, after-sales service, production scale and economic strength of the manufacturer. Users can refer to the marketing market's market share of the brand in 1999 and the manufacturer's web page.
Air conditioning is mainly divided into two categories: building air conditioning and vehicle air conditioning.
Building air conditioners have room air conditioners, unit air conditioners and central air conditioning systems.
The room air conditioner is divided into cold air type, electric heating type, heat pump type and heat pump auxiliary electric heating type according to functions. The model name is shown in the room air conditioner model identification table.
1. If it is only for the cooling and dehumidification of the living room, you can use the cold air type room air conditioner with lower price.
If it is a place where there is no need to cool down but the moisture is too large, you can use a dehumidifier.
If you want to use an air conditioner to heat the winter in addition to the summer cooling, you need to use an electric heater, a heat pump or a heat pump to assist the electric heating. However, it is uneconomical to use electric heating, and the heat pump type has limitations. The heat pump with automatic defroster needs to be operated at an outdoor temperature higher than minus 5 degrees (-5 °C) without automatic defrosting. Manual control of defrosting must be initiated at an outdoor temperature above 5 degrees above zero.
2, split type air conditioner, has the advantage of less indoor noise; but pay attention to a few points:
1 Installation engineering is complex and requires professional skills;
2 Since the indoor pipeline and the outdoor pipeline are docked at the site, it is not uncommon that the refrigerant leakage has to be filled with refrigerant before use every year;
3 prices are relatively high;
4 There must be enough space for outdoor unit installation.
3. If the room is small and the room is small, you can use the one-to-two, one-to-three-type split air conditioner of the “trailerâ€, among which the preferred inverter air conditioner unit is recommended.
Second, the determination of the cooling capacity of the air conditioner
For the height of 2.7 meters, the height of the ceiling is 2.4 meters, the window area is 1.8 meters and 1.8 meters, and there are standard rooms with good insulation and sealing. The cooling capacity per square meter of indoor area is 130 watts. The standard unit area cooling capacity, in actual use, needs to be corrected according to many factors such as city, orientation, operation mode, etc. The user can calculate the required cooling capacity through the correction coefficient table.
If you are annoyed with the correction calculation, you can estimate it by 160W per square meter, taking the most 12 square meters of the existing commercial housing as an example:
Cooling capacity = 160 watts / square meter X 12 square meters = 1920 watts;
Since the actual cooling capacity of the air conditioner is often lower than the nominal cooling capacity under the standard working conditions marked on the nameplate (the regulation can be less than 5%), the nominal cooling capacity to be purchased is slightly larger, and the nominal cooling capacity can be purchased. It is a 2000 W air conditioner.
Third, the brand and other
1, the domestic power supply status:
Before purchasing an air conditioner, it is necessary to understand the situation of the power supply in the home. Users of the old house should pay special attention to this. If your home is a 3A single-phase watt-hour meter, it is enough for lighting and color TV, refrigerator and washing machine. The air conditioner cannot be used until the meter and wiring are replaced.
A single air conditioner of more than 7000W requires three-phase 380 volt AC power. If you do not have this power supply, you can buy more than one single-phase air conditioner. Of course, this has to be used at the same time when the meter capacity is allowed.
2. To purchase energy efficient air conditioners:
When you purchase an air conditioner with a large energy efficiency ratio (EER), even if the price is higher, it is still affordable from a long-term perspective.
3. About other additional features:
The basic function of the air conditioner is to cool down or warm. The most basic requirement is safety. The necessary performance is quiet and energy-saving. If you improve these basic functions, add some automatic protection such as stop and restart, remote control, room temperature setting, timing. Operation functions such as shutdown and sleep mode operation are also necessary, and frequency conversion operation is one of the measures for energy saving. to
Others, such as mold-proof filter, ventilation type, etc. are commercial speculation, negative ions, activated carbon, etc. are not necessary to be added to the air conditioner, even if added, it can not prevent 'air conditioning disease'.
4. Brand selection:
Domestic air conditioners are now in line with international standards and are of comparable quality. There is no need to pursue imported original machines. The joint venture brand machine was originally produced in China. Of course, the brand is related to the quality, price, after-sales service, production scale and economic strength of the manufacturer. Users can refer to the marketing market's market share of the brand in 1999 and the manufacturer's web page.
Car Wireless Charger,Wireless Car Charger,Magesafe Car Charger,Usb Car Charger
Comcn Electronics Limited , https://www.comcnspeaker.com