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Air conditioning knowledge

How to choose central air conditioning correctly? Central air-conditioning purchase strategy?
2020-05-21 13:29:30

In recent years, the central air conditioning has been favored by many family users with its advantages of constant temperature and space saving. With its advantages, central air conditioning has gained a lot of fans in the household sector, but many friends will feel a foggy water when choosing to buy, and do not know where to start. Next, let's explain to our friends. How to choose central air conditioner correctly What are the central air conditioning options?


1. Choose service and construction.

Compared with the ordinary independent air conditioning, the household central air conditioner is actually a "semi finished product", which is in harmony with the interior decoration. The service of household central air conditioning not only includes after-sales service, but also includes pre-sale consultation, plan design and installation works. Therefore, it is particularly important to choose a brand with high reputation, good reputation and comprehensive strength.

The central air conditioning is a concealed project, which is installed at the beginning of the renovation. The installation of household central air conditioning generally requires three steps. After embedding the wires, the relevant staff will install the indoor and outdoor machines indoors, and then decorate the ceiling. After the decoration is completed, the relevant staff will install the panel again for debugging. The construction of central air conditioning directly affects the use experience in the later stage, and the selection of a good service team is also very important.

2, central air-conditioning selection

Often hear entanglements, whether the central air-conditioning of the home should choose "one drag one" or "one drag more"?

The characteristics of a series of family installed household central air conditioners are a room machine and a matching air-conditioner outdoor unit, which is a separate system software. The air-conditioner and outdoor unit of each room are independently operated. The outdoor unit of the air-conditioner is similar to the traditional central air conditioner. The volume is exquisite, and it can be installed in the central air conditioning position embedded in the apartment house. A room is equipped with a outdoor unit to form a system. The air conditioning in each room can be controlled separately. When the indoor unit is fully opened, the structure will save more electricity.

Is the domestic central air conditioning system good or good?

The temperature of the central air conditioning blower of the water system is generally 15~18 degrees, the air outlet is softer, and the moisture in the air is not easy to drain. At the same time, it supports central heating and heating, and household heating is more comfortable and energy saving in winter.

The air outlet temperature of the central air-conditioning system of the fluorine system is generally at 7~12 C, the temperature drops fast and the refrigeration is fast. The central air-conditioning system of fluorine system is various, and the price range is large enough to meet the needs of all levels. The cost of investment in fluorine system is relatively lower in large apartment buildings.

3, refrigeration capacity and energy ratio

When designing and selecting the central air-conditioning, it is necessary to calculate the air conditioning area of the room, calculate the total refrigerating demand according to the cooling capacity required per square meter, and select the refrigerating capacity of the air conditioner on the basis of actual usage.

One is converted to refrigerating capacity of W, roughly 2324W. The actual refrigerating capacity of the room can be calculated through the actual cooling area (excluding the kitchen, bathroom and other uncooled areas) * unit area cooling capacity. Generally speaking, the cooling capacity of 140~240W is required per square meter, and the corresponding refrigerating capacity can be calculated according to the size of the room, so as to calculate the number of air-conditioners needed in the room. In actual calculation, the orientation of the room and the height of the floor should also be taken into account. The cooling capacity of indoor rooms with windows facing west or south facing is higher than that of other oriented rooms; the rooms of French windows, large windows, or the upper floors should also be appropriately increased.

The mixing ratio of each central air-conditioning unit is slightly different. The mixing ratio of ordinary air conditioners should not exceed 1.3 between 90%~~120%. Excluding the total refrigerating volume of the internal machine, the upper limit of the brand is different, but try not to exceed the standard so as not to start the system.

4. Indoor air and ventilation / overhaul.

The outdoor unit of the air-conditioner must be placed in a well ventilated place. If the ventilation is not smooth, it will have a great impact on the operation of the air conditioner. The location of outdoor units should be hidden as far as possible, so that the appearance and noise of the house will be avoided, and the ventilation and heat dissipation will be good.

Every room needs an indoor machine or an air outlet. If the room is large, two indoor units or air outlets can be configured, and the corresponding indoor units are selected according to the cooling capacity of the air conditioner.

The maintenance room must be maintained for maintenance in the future. For the selection of the outlet position, the main consideration is whether the air in the air conditioning area can be circulated properly. According to the structure of the room, the air supply outlet and the return air outlet are designed rationally. The size of the air inlet is clearly defined. If the air outlet is too large, it will also affect the effect of air conditioning.

5, air conditioning layout

In order to ensure the efficient use of indoor units, the central air conditioning system follows the standard of "three, no three unnecessary". Simply say, "three no", the indoor machine can not set up the lamp trough before blowing the outlet. The height of the embedded machine and the thin pipe can not exceed 3M, and the blow out wind and return air of the thin pipe should not exceed 3M. The "three must" must be firmly connected to the outlet of the indoor machine and the air outlet of the ceiling, ensuring a certain gap between the ceiling of the indoor machine and the ceiling, avoiding noise caused by resonance, and fixing the lower arm of the indoor machine with double nuts.

Installation of central air conditioning During the construction process, the central air-conditioning family should be selected. In the stage of home decoration planning, air conditioning should be included in the plan and layout management should be done ahead of time. The installation of central air conditioning is a technical work, not as simple as expected, so we must pay more attention when installing.

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