Central air conditioning fan coil occupation development status and selection

Because the fan coil system has the advantages of easy control, easy installation and low cost, its application field is constantly expanding, and the product type is constantly added. When the traditional large-scale centralized air conditioning and split home air conditioning can not meet the requirements of modern civilization for the living environment grade and living management, the concept of household central air conditioning came into being, and the fan coil unit played an indispensable role in it. China's fan coil has experienced several different changing processes. At the beginning, the understanding of fan coil units stayed on the basis of the primary satisfaction of air volume requirements. Think that as long as the air volume is satisfied with the requirements, it is a good fan coil. Under the guidance of this concept, the main feature of the fan coil unit produced at that time is the general overspending of the air volume, which brings about the unit noise and large energy consumption, and the unit power cooling capacity of the fan coil unit produced at that time is only about 40W. Due to the large noise, the situation at that time is that people enjoy the cool breeze brought by the air conditioning, but also have to endure the pain of annoying noise. In order to deal with the above problems, the state began to amend the product standards of fan coil units. In recent years, China's fan disk control operation has been rapidly developed, the annual output has surged from thousands of units in the early 1980s to more than tens of thousands of units now, but the product function has been hovering in the foreign level of the 1970s for a long time. The prospect of rapid growth at this low level is not optimistic. In the mid-1980s, foreign fan disk control operations represented by Traning, York, Carrier and other companies in the United States have successively completed better learning new products.

At that time, China's air conditioning profession is intoxicated with domestic fan coil in the cold capacity, noise and other isolated parameters according to A solid outside the actual F. The real gap between the comprehensive function and the application role, so that this product replacement has not caused any reaction in China's air conditioning community. In fact, the new generation of foreign fan coil regardless of function, variety and air conditioning are ahead of our products.

Fan coil is the final product of central air conditioning ambition, fan coil is widely used in hotels, office buildings, hospitals, commercial and residential, scientific research institutions. It is understood that in order to satisfy the planning and selection of different occasions, there are many varieties of fan coil, horizontal concealed (with bellows) fan coil, horizontal open-mounted fan coil, vertical concealed fan coil, vertical open-mounted fan coil, cassette two-outlet fan coil, cassette four-outlet fan coil and wall-mounted fan coil.

Experts say the selection of fan coils is a key issue. The selection of fan coils according to the cooling load of the air-conditioned room is a common practice in the planning of the air conditioning system, whose intention is to ensure the room temperature at the peak load. In fact, most of the time of the operation of the air-conditioned room will not be at the peak load, so that the cooling capacity is excess, and switch to the medium and low operation to reduce the cold output, and then maintain the thermal balance of the room. In the selection of fan coil unit, in addition to satisfying the cooling capacity and calculating the cooling load, it is also required to satisfy the matching of its sensible heat and latent heat to satisfy the requirements of the room heat and humidity ratio. The air volume must meet the application requirements of supply air temperature difference, air exchange frequency and air flow organization.

As the end equipment of central air conditioning, the quality of fan coil determines the function of indoor air conditioning. At the same time, the cleaning problem also directly affects the use of central air conditioning. There are many dust particles in the atmosphere. Under the action of pumping and returning air for a long time, the aluminum fins of the fan are filled with dust and dirt. On the one hand, the thermal exchange between chilled water and hot air is affected, so that the air temperature drops. On the other hand, it also affects the delivery of cold air that has cooled down after thermal exchange, forming the phenomenon that the air conditioner is opened and the room is still not cold. Because the central air conditioning host sends 7 degrees of water into the fan coil after refrigeration, and becomes 15-16 degrees of cool air after exchange in the fan coil tube, so that the room temperature drops. Therefore, after the central air conditioning has been used for a period of time, it is necessary to clean the aluminum fins of the fan to deal with the above drawbacks.

At present, the share of traditional commercial central air conditioning fan coil market tends to be stable, and enterprises want to pioneer a new situation in the meantime, it is very difficult. In the face of fierce competition in shopping malls, many central air conditioning fan coil enterprises are numerous in pioneering subdivision shopping malls, avoiding direct confrontation with traditional counterparts, and the field of track transportation has become the blue ocean of shopping malls for many central air conditioning enterprises to compete.

China's economy has entered a period of rapid growth, and the government has vigorously carried out trajectory transportation construction to meet people's travel needs. The huge construction volume has brought huge business opportunities to related enterprises, during which central air conditioning as a supporting track traffic, there is a huge room for growth, leading to domestic and foreign central air conditioning brands to enter the market first.

Under the guidance of the national strategy of "energy conservation and emission reduction" and "sustainable development", domestic brands have become the supplier of the government's intention plan by relying on their increasingly perfect skill strength and constantly improving service talent, which further promotes the national brands to gradually grasp the dominant power.

Now, the battle for the central air-conditioning market of the first-line air-conditioning enterprises is intensifying, Gree, the United States and other air-conditioning giants play the strength of the leading enterprises in the industry, in the central air-conditioning skills research and development, equipment production, planning and other aspects of hard work, actively engaged in the development of China's central air-conditioning fan coil career, and strive to eat the track traffic this huge market cake.

In view of the particularity of track traffic, many central air conditioning brands organically combine a variety of products, plan a good treatment plan through experimental tests, and provide one-stop treatment plans for track stations. Individual stations no longer need to make multiple acquisitions for different central air conditioning fan coil products, reducing workload and acquisition costs. In view of the particularity of the trajectory, the central air conditioning brand in the trajectory now mainly provides all aspects of the treatment plan.