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What are the differences between a central air conditioner and an ordinary air conditioner?
Household central air-conditioning is a miniaturized independent air-conditioning system, which is similar to large-scale central air-conditioning in the refrigeration mode and basic structure.
A host connects multiple air outlets through an air duct or hot and cold water pipes to send cold and warm air to different areas, so as to realize the purpose of temperature regulation in multiple rooms.
Compared with traditional air conditioning, home central air conditioning can easily introduce fresh air and greatly improve indoor air quality. Avoid the trouble of "air conditioning disease" of traditional air conditioning.
Connecting the air duct can supply air to the toilet, the air distribution in the room is more reasonable, the temperature is uniform, the fluctuation is less, and the comfort is good.
Indoor ceiling decoration can make the indoor unit conveniently placed in the ceiling and integrate into the whole decoration effect, which greatly improves the appearance of the building and the hidden danger of insecurity caused by too many outdoor units caused by the use of multiple split air conditioners.
And it can avoid the traditional air conditioning refrigerant connecting pipe exposed and hanging in the indoor air.
Comparison between home central air conditioning and traditional air conditioning: aesthetics
Household central air conditioning: adopt concealed installation, indoor unit, and refrigerant pipeline are hidden in the local ceiling space to maximize the indoor space.
The indoor unit and outdoor unit of the household central air conditioner is connected with copper pipe and the installation position of the indoor unit is not limited by super long piping, which can fully consider the requirements of beauty and comfort, so that the central air conditioning and indoor decoration style can be integrated into one body, beautiful and generous.
Traditional air conditioning: the indoor unit of a traditional wall-mounted or cabinet-type air conditioner needs to occupy the wall decoration space or ground space. The refrigerant pipes of the indoor unit and the outdoor unit are exposed, so the overall decoration style of the air conditioner and the room is difficult to coordinate.
Moreover, the installation position of the indoor unit is limited by the installation position of the outdoor unit. In order to make the installation effect of the air conditioner as beautiful as possible, the indoor unit of an air conditioner is generally installed close to the outdoor unit Perhaps this location is not the best location for the air conditioning effect and aesthetics.
Comparison between household central air conditioning and traditional air conditioning: Functions
Household central air conditioning: in addition to the three functions of traditional air conditioning, it is convenient to connect the fresh air system. The fresh air system will monitor the indoor air quality for 24 hours.
When the air quality deteriorates, outdoor fresh air will be introduced. The fresh air system will save part of the heat of the indoor air to ensure healthy indoor air quality and reduce the heat loss in the room.
Traditional air conditioning: traditional air conditioning generally has three basic functions: cooling, heating, and dehumidification. Traditional split air conditioning can not introduce fresh air.
In order to ensure healthy indoor air quality, it is necessary to open the door and open the window for air exchange. In this way, a large amount of cooling capacity in the room will be lost, which will affect the room temperature and cause energy waste.
Home central air conditioning and traditional air conditioning comparison: comfort
Household central air conditioning: the indoor unit of the household central air conditioner is hidden in the local ceiling space, which can avoid the air conditioner from directly blowing the human body.
Its super long piping makes the air conditioner be installed in the position with the best comfort. The airflow is well organized so that the whole room is in the return air area of the air conditioner, which makes the temperature in the room more uniform and increases and Enhances the comfort of the room.
Traditional air conditioning: the installation position of the indoor unit of a traditional wall-mounted or cabinet-type air conditioner is limited by the installation position of the outdoor unit.
The indoor unit of the air conditioner can only be installed on the wall near the outdoor unit, and the position of the air outlet and return air outlet cannot be adjusted. When refrigerated, it often causes the air conditioning can directly blow to the area that is cold, and a non-direct blowing area is hot, affecting the comfort of living.
Comparison of home central air conditioning and traditional air conditioning: purchase and installation costs
Household central air conditioning: the cost performance of household central air conditioning is getting higher and higher. For example, the price of Trane and York household central air conditioning is basically equivalent to that of wall-mounted and cabinet air conditioners of joint venture brands.
The installation of a household central air conditioner should be carried out before the ceiling of the air conditioner, which is closely related to indoor decoration. The installation period is long and the cost is relatively high.
Traditional air conditioning: the prices of traditional wall-mounted and cabinet air conditioners are relatively moderate. However, the price of high-grade wall-mounted air conditioners and cabinet machines is always high.
The installation of traditional wall-mounted air-conditioners does not need decoration and coordination, the installation period is short, and the cost is low or even no charge.
Comparison between domestic central air conditioning and traditional air conditioning: energy consumption
Household central air conditioning: household central air conditioning is becoming more and more miniaturized, and the machine structure can be divided into one driving one structure and a multi-connected structure.
The power consumption mode and power consumption of the central air conditioner with one driving one structure are the same as those of wall-mounted and cabinet air conditioners under the same conditions.
The power consumption is the same as that of traditional air conditioning, whether it is opened individually or fully. When all indoor units are fully open, the multi-split unit is more energy-saving than traditional air conditioning.
Therefore, you can choose the most energy-saving central air conditioning scheme according to your own usage habits.
Traditional air conditioning: traditional wall-mounted and cabinet-type air-conditioners adopt the form of connecting an outdoor unit with an indoor unit.
Each air conditioner is controlled separately, and its energy consumption is not affected by other air conditioners. When it is opened separately, the energy-saving effect is better.
Comparison between domestic central air conditioning and traditional air conditioning: After-sales
Household central air conditioning: the service life of the household central air conditioner is generally more than 15 years. There is a (350 × 350) maintenance port reserved on one side of the connecting pipe of the indoor unit.
When maintaining, it only needs to open the access port, which is convenient for operation. Household central air conditioning only needs to clean the air outlet and filter screen, the air outlet, and the filter screen can be disassembled conveniently without professional operation.
Traditional air conditioning: wall-mounted and cabinet-type traditional air conditioners have a service life of 8 ~ 10 years. The whole air conditioner is installed in a non-hidden way, and the after-sales maintenance and cleaning are very convenient.
Is it suitable to install a central air conditioner at home?
How much does it cost to install a central air conditioner?
What are the advantages and disadvantages of the central air-conditioner types in the list and how to choose them?
Is it better to choose frequency conversion or frequency selection for the household central air conditioner?
What are fixed frequency air conditioning and variable frequency air conditioning?
As we all know, the compressor is the most important core component of air conditioning. According to the types of compressors, air conditioning can be divided into fixed frequency air conditioning and frequency conversion air conditioning.
The air conditioner with a constant frequency compressor is also called a constant frequency air conditioner. The speed of the compressor is fixed, and the output and input power are also fixed. When the air conditioner operates normally, when the indoor temperature reaches the preset value, the compressor will stop running.
When the temperature exceeds the preset range, the compressor will restart, and the instantaneous power consumption of the compressor will reach the maximum value. The frequent startup and shutdown of the compressor is also the main reason why the fixed-frequency air conditioner consumes more electricity.
The air conditioner with a variable frequency compressor is a variable frequency air conditioner with a frequency conversion control system. Its basic structure and refrigeration principle are exactly the same as those of ordinary air conditioning.
The compressor of the variable frequency air conditioner is automatically stepped less, which can automatically adjust the operation efficiency of the air conditioner according to the indoor temperature.
When the indoor temperature reaches the expected value, the air conditioning the host runs at a constant speed that can accurately maintain the temperature, so as to realize "non-stop operation", and to ensure the stability of the ambient temperature.
Comprehensive introduction of variable frequency air conditioning
Variable frequency air conditioning relies on the speed of the compressor to control the room temperature. The room temperature fluctuation is small, the power consumption is less, and the comfort is greatly improved.
Variable frequency air conditioning can automatically select heating, cooling, and dehumidification operation modes according to the ambient temperature so that the room can quickly reach the required temperature in a short time, and fluctuate with a small temperature difference under the state of low speed and low energy consumption, so as to achieve the effect of fast, energy-saving and comfortable temperature control.
Advantages of variable frequency air conditioning:
- Strong and rapid cooling and heating: the variable frequency air conditioner has strong high-speed operation ability. When it is started, it will immediately operate with high power to achieve the effect of rapid cooling and heating.
- High efficiency and energy saving: the frequency conversion air conditioner determines the power according to the demand, so the efficiency is high. In addition, since the compressor almost does not start/stop repeatedly, it does not consume excess power. Therefore, the electricity charge is only about 2 / 3 of the general air conditioner, which can be called the energy-saving model.
- Accurate room temperature control: the temperature control is accurate and stable, the room temperature variation range is within + 0.5 ℃, while the fixed frequency air conditioning is about + 15 ℃. Therefore, the room temperature can be avoided and comfort can be greatly improved.
Disadvantages of frequency conversion air conditioner:
Compared with ordinary air conditioning, the price is about 1 / 3 ~ 1 / 4 higher. At the same time, due to the complexity of the control system and frequency conversion system of variable frequency air conditioners, the requirements for components are higher.
Compared with ordinary air conditioners, the failure rate of the inverter air conditioner is higher. Moreover, due to the use of frequency conversion technology, harmonic pollution will be produced at the same time.
Frequency conversion of the constant frequency of air conditioning
Fixed-frequency air conditioning is the most widely used air conditioner in our daily life. It mainly cools or heats by controlling the operation of the compressor. In short, it needs to adjust the on / off key of the air conditioning.
However, when it is on and off, it is easy to cause sudden cold and hot and consume a lot of electrical energy. And through frequent switching, the impact on the home power grid is very big.
Advantages of fixed frequency air conditioning:
- It has been on the market relatively early, the technology is relatively mature, and the products are rich, various, and optional.
- The price of fixed-frequency air conditioners in the market is relatively moderate. With the influence of national energy-saving subsidies, the price of energy-saving air-conditioning products is more affordable, and the product cost performance is higher.
Disadvantages of fixed frequency air conditioning:
- With the people's demand for the ambient temperature, it is easy to cause frequent start-up and shutdown of fixed-frequency air-conditioning compressors, resulting in large fluctuations in indoor temperature.
- The frequent start and stop of fixed-frequency air conditioning compressors consume a large amount of electricity and is not energy-saving.
- It takes a long time to turn on to a suitable temperature and the fixed frequency air conditioner will take a long time to reach the set temperature, which is not conducive to people's enjoyment.
Frequency conversion or fixed-frequency air conditioning is better. Frequency conversion and fixed frequency are two common air conditioning types. Frequency conversion air conditioning performs better in energy saving and comfort, while fixed frequency air conditioning is better in price.
However, from the long-term development point of view, frequency conversion air-conditioning, which represents comfort and energy-saving, is still the future development trend.
At present, many central air conditioning systems have all realized frequency conversion. The fashionable and beautiful decoration effect and comfortable air supply bring a better air conditioning experience.