What brand of home commercial central air conditioner is good? The first is energy saving, and refrigeration and heating are better. The indoor and outdoor noise is the lowest, the unit is less disturbed by the outside world and the failure rate is low. Adopt DC frequency conversion two-stage compression.
The machine, finally, has good after-sales service and low price of accessories. Core technology to build an industry-leading multi-online group
Practice is the only criterion for testing truth. At the beginning of 20 13, gree tested the performance of GMV5S full DC inverter unit in Beijing. The test site is located on floor 1-5 of TEDA Science Park, Shunyi District, Beijing.
The air conditioning area is 520 square meters, and the apartment type and orientation are the same. The test units are Gree GMV5S series and imported units of a foreign brand. According to the test data from 65438+1 October1to 65438+1October 5 (from 8:
Turn it on and off at 5: 30 pm; The daily temperature is below 0℃, with the coldest 1.2,-15℃ in the evening and -7℃ in the daytime).
The test results show that the highest indoor temperature of Gree GMV5S apartment can reach 23.6℃, while the highest indoor temperature of foreign brand apartment is less than 15℃. Judging from the results of comparative data, the mechanism similar to Gree
The heating speed, defrosting effect and overall heating effect are better than those of air conditioners imported from Japan. Gree Electric increased investment in technology research and development, and mastered and upgraded key technologies. After a long period of research
The advent of GDF and Gree GMV5S all-DC variable frequency multi-link group has broken the monopoly of foreign brands in the field of DC variable frequency multi-link technology.
It is understood that GMV5S full DC frequency conversion multi-line is a new generation of multi-line developed by R&D personnel in Gree Electric. The company has applied for patents 105, including 49 invention patents.
This technical index has reached the international advanced or leading level.
The compressor and fan of the unit adopt full DC frequency conversion system control technology, and the highest comprehensive energy efficiency ratio reaches 6.8, which is 89% higher than the national first-class energy efficiency (3.6). The unit adopts super-long pipeline design, with the farthest connection.
The nozzle length can reach 165m, the drop can reach 90m, and the total piping length can reach 1000m, which can meet the needs of most commercial users in the market. Unified control and management are realized through powerful centralized and remote control systems.
Manage all air conditioning units, which is convenient for users to use and manage. Gree central air-conditioning technicians said that multi-connection is a multi-system, with many control parameters, complex data interaction, its reliability and communication speed.
Waiting is the key technology. The main brands in the industry adopt HOMEBUS or 485 bus communication technology, and Gree GMV5S adopts CAN bus communication technology, which is the first time in the industry to apply bus technology to automobile and military fields.
When used in multi-connection, the reliability is higher, the communication speed is increased by 100%, and a single refrigeration system can drive 80%, which is the highest in the industry at present. The energy efficiency ratio of Gree GMV5S DC variable frequency multi-connected air conditioning unit can reach the highest.
6.8: 1, far exceeding the national energy efficiency standard. What's more, the capacity of Gree GMV5S multi-connected outdoor unit can reach 180 kW. Gree "Almighty King" two-stage inverter air conditioner is the latest inverter technology in the industry.
The technology of "two-stage enthalpy-increasing variable frequency compressor" completely subverts the operating environment limit of traditional air conditioners, and can operate normally at -30℃ to 54℃. "Omni-directional" outdoor noise is as low as 45dB.
Wang is still the quietest inverter air conditioner on the market. In the past, the noise reduction of any air conditioner originated from the optimization of the air duct, while Gree "Almighty King" used a seamless evaporator and a brand-new large motion guide rail.
The wind mechanism reduced the noise from 20dB(A) to 65,438+08 dB (a) in one fell swoop. Gree Electric strongly exhibited "Almighty King" series air conditioners, DC variable frequency centrifugal chillers, solar air conditioners, RV air conditioners and new energy sources.
A full range of products, such as source air conditioners, air energy water heaters and air purifiers, have fully demonstrated the strong advantages of global refrigeration industry leaders. At the same time, Gree Electric introduced DC frequency conversion from 250 cold tons to 1500 cold tons.
Heart machine series products. This series of products made a further breakthrough in technology, and the energy efficiency ratio was increased to 1 1.68: 1, which is by far the most energy-saving centrifuge set, rewriting the energy-saving standard for large central air-conditioning products again.
Quasi. The person in charge of Gree's overseas market said that it was with this technology that Gree Central Air Conditioning successfully entered the overseas market and won the bid for key projects such as Sochi 20 14 Winter Olympics in Russia. "Under the same conditions, with other products.
Brand central air conditioning is 6.5438+million, and Gree only needs 6 million. Experts said that the international market favored China's household appliances, mainly due to the core technology of China's household appliances enterprises.
Great progress has been made. A Gree 1.5P inverter air conditioner can save about 47 1KW/h of electricity a year compared with a fixed-frequency air conditioner with the same refrigeration capacity. Even with the same inverter air conditioner, the ultra-low frequency operation of 1 Hz is smooth.
The speed is also lower, the minimum running power is only 15W, and the standby power is only 0.2W According to these data, you should consider what kind of central air conditioner to choose.