As a renewable energy source, solar energy has attracted widespread attention from scholars around the world because of its clean, cheap and inexhaustible characteristics. Using solar energy to replace conventional energy has become a current research hotspot. In December 2013, the photovoltaic direct-drive centrifuge system launched by Gree Electric Appliances was identified as "the world's first and internationally leading". This system was the first to achieve the seamless integration of photovoltaic power generation and large-scale central air-conditioning. Gree opened the central air-conditioning system without electricity. The era of "zero energy consumption" for air conditioning.
Gree uses no electricity to create an era of zero energy consumption for air conditioners
Connect to the grid to generate electricity and share solar energy
Gree’s new photovoltaic product exhibited at the Canton Fair The enthalpy-increasing multi-connector combines solar energy with Gree's household enthalpy-increasing multi-connector. Through Gree's independently developed power supply application management module (PSCM), the air conditioner does not need to be plugged in any inverter equipment and voltage stabilizing equipment, and is connected to the solar DC system. Perform maximum power point tracking (MPPT) control to automatically find the maximum power point of photovoltaic cells and maximize the use of photovoltaic cells. The photovoltaic conversion efficiency of traditional solar air conditioners can generally reach 88, while the photovoltaic conversion efficiency of Gree Photovoltaic multi-connection can be as high as 96.
According to Gree engineers, the photovoltaic enthalpy-increasing VRF has made a major breakthrough in photovoltaic utilization technology. It has a built-in integrated power application management module (PSCM) independently developed by Gree. It can operate without inverter equipment and stable power. In the case of high voltage equipment, it can be directly linked to photovoltaic modules and can also be connected to the grid for power generation. PSCM can automatically adjust solar power and city power. When the air conditioner is running, solar power is used first and city power is used as auxiliary power to meet the input power required for air conditioner operation. When the air conditioner is stopped, PSCM supplies solar power in the reverse direction. The power grid enables grid-connected power generation.
Gree takes the lead in advocating energy conservation and low carbon
On September 17, Ms. Dong Mingzhu, chairman of Gree Electric Appliances, was appointed by the United Nations as the "Ambassador of Urban Sustainable Development." Dong Mingzhu received this international honor due to Gree Electric’s long-term efforts and contributions in technological innovation, improving energy efficiency and mitigating environmental degradation. At the award ceremony, He Peide, deputy representative of the United Nations Development Program in China, said that under the leadership of Dong Mingzhu, Gree has become a leading force in global sustainable development and has completed many "impossible tasks" in the field of innovative research and development, including The world's first independently developed photovoltaic direct-drive variable frequency centrifuge and the application of R290 environmentally friendly refrigerant.
With the photovoltaic enthalpy-increasing multi-connector exhibited at the Canton Fair, Gree Electric once again completed the "impossible mission." It is understood that this photovoltaic enthalpy-increasing multi-split unit combines solar energy with household enthalpy-increasing multi-spring units. It relies on the application of a series of core technologies such as dual-stage compression technology, dual-compressor parallel technology and full DC control of the unit. It is a comprehensive refrigeration system. The energy efficiency ratio (IPLV) can reach up to 7.05, and the energy efficiency ratio (EER) exceeds 3.2.
Gree photovoltaic VRF is based on the principle of photovoltaic (PV) power generation, converting solar energy into electrical energy, thereby reducing the consumption of city electricity. Each solar panel can generate 200W of electric energy (based on model PVM200/33.4M) when there is sufficient sunlight. According to the use of 10 solar panels per air conditioner, the maximum power can reach 2000W. Compared with ordinary multi-springs, Gree Photovoltaic multi-springs It can save up to 73% of electricity to maximize energy saving. If used continuously for 10 years, each air conditioner can reduce 515 kilograms of carbon emissions, which is equivalent to planting 1,894 pine trees.
As a major energy consumer in buildings, air conditioners consume a large amount of electricity every year. Energy saving of air conditioners is necessary and the general trend. Gree Electric has responded to the national call for energy conservation and emission reduction many times, combining new energy solar energy with air conditioning, independently researching and developing new technologies, directly using solar DC power for power supply, and connecting with the air conditioning DC system to improve solar energy utilization. Gree once again launched a high energy efficiency , high-reliability, high-tech new products to further optimize building energy allocation, reduce energy consumption, and reduce carbon dioxide emissions.