Screw compressor development prospects

With the popularization and promotion of heat pump technology in the refrigeration industry, screw compressors, one of the core structures of ground source heat pump refrigeration equipment, are also in line with the development trend of low-carbon economy, ushering in a new round of development opportunities.

In recent years, the market demand for screw refrigeration compressors in China has grown rapidly. The downstream industries of screw refrigeration compressors are mainly commercial central air conditioning and industrial refrigeration. With the present concept of low-carbon and the emergence of a low-carbon economy, the requirements for the comfort of the living and working environment, environmental protection, and energy saving are continuously increasing. The commercial central air-conditioning for energy saving and environmental protection will usher in. The momentum of rapid development. Statistics from the central air-conditioning industry show that the central air-conditioning market in China has experienced rapid growth with an annual growth rate of 48%. Commercial central air-conditioning industry, led by real estate development, department store and logistics, and large-scale public buildings, will continue to experience strong demand. It is expected that the average annual growth rate of central air conditioner sales will be approximately 10% to 20% from 2009 to 2012. Screw units will therefore be greatly developed, and in the central air conditioning area of ​​medium-sized 30RT-500RT, screw compressors have gradually replaced piston compressors and have occupied the market.

As we all know, in recent years, screw compressors have used the advantages of high reliability, easy operation and maintenance, good power balance, strong adaptability, and good gas volume adjustment, and have quickly occupied the market for high-capacity reciprocating compressors. , And continue to extend to the medium-capacity market, widely used in refrigeration, refrigeration, air conditioning and chemical process refrigeration equipment. For HVAC systems, there are many types of heating and cooling equipment such as air heat source, water heat pump, heat recovery, and ice storage. Screw compressors are required. In the industrial sector, screw heat pumps are also used for heat recovery in order to save energy.

Compared with other types of refrigeration compressors on the market, screw compressors are hundreds or even thousands of times higher than the fully enclosed piston compressors and scroll-type compression mechanisms in the range of refrigeration capacity; Compared with open-piston refrigerating compressors used in cold storage, centrifugal chiller compressors for chillers can be used regardless of refrigeration or air conditioning conditions. In this regard, the largest competitor in the market for screw compressors is the widely used semi-hermetic piston refrigeration compressor, but the single refrigeration capacity of semi-hermetic piston refrigeration compressors is in the range of 3KW to 100KW. Under a wide range of cooling or air-conditioning conditions, multiple machines must be connected to achieve the desired results. The single-screw compressors with 30 kW to 1500 kW cooling capacity are sufficient for various cooling ranges and are easy to adjust, that is, screw compressors. The degree of application and market competitiveness can be said to be the most advantageous in terms of similar products in the industry.

China's frozen and refrigerated industry accounts for about 24% of the total refrigeration industry. Although it is less than 40% of the international mature market, it also shows that the refrigeration and refrigeration industry has a high market potential, especially screw compressors. Because the screw compressor is suitable for 24 hours long-term operation, and the technology used in the cryogenic system is continuously improving, its performance and efficiency are greatly improved. It is believed that in the near future, for the domestic market, it has already become a developed country in Europe and America. Standard screw compressors for low-temperature refrigerating and freezing systems are highly promising.

The screw compressor industry is a technology-intensive industry. The production process is relatively complicated and the processing precision is demanding. The difficulty in updating products and technology is also correspondingly increasing. The sustainable development of the company requires both a certain R&D strength and a technical reserve, and it also requires a certain amount of Accumulated practical experience. At present, the screw refrigeration compressor brands on the domestic market, Bitzer, Lafukang and other companies are representatives of foreign brands, and the domestic screw compressor manufacturers improve the technical content of products through technology introduction, technical cooperation or independent research and development. And performance quality, such as Han Zhong, Fu Sheng, and other domestic production of screw compressor companies, has also been in line with the international advanced level, has become China's own brand leader.

Under the premise of broad market prospects, screw compressors and related companies that are in line with the development direction of low carbon and energy conservation in the refrigeration industry have also obtained a lot of space for their own development and growth, and high-performance, low-energy-consumption, environmentally friendly screw compressors. Products will inevitably gain market recognition, and win victory in the cruel competition in the refrigeration industry. The advantage of developing a market and winning is precisely the era in which screw compressors have emerged in a low-carbon economy.