Gree seized the commanding heights of global refrigeration technology with its pioneering core technology. This is just an updated result of Gree's exploration of "China Creation". The 1 Hz frequency conversion technology, which was independently innovated before, achieved a zero breakthrough in the history of the National Science and Technology Progress Award; The world's first permanent magnet synchronous DC frequency conversion centrifuge set has changed Gree from a "challenger" in the field of central air conditioning to a "leader"; R290 environmental protection refrigerant air conditioner makes China take the lead in the research and application of new refrigerant technology for the first time in the world. Rare-earth-free high-efficiency inverter compressor opens the era of rare-earth-free inverter air conditioning. The world's first "two-stage compression technology" broke through the operating limit of traditional air-conditioning products ... 20 10 In March, Gree Electric decided to independently develop the research topic of "magnetic suspension variable frequency centrifugal refrigeration compressor and chiller" and began to conduct special research. During this period, a lot of manpower and material resources were invested, and finally a single magnetic suspension variable frequency centrifugal water chiller with a cooling capacity of 1000RT(35 16KW) was successfully developed. Compared with domestic and foreign manufacturers, its performance index is unparalleled in energy saving effect.

According to estimates, the energy consumption of air-conditioning hosts in large public buildings accounts for 25%-40% of the total energy consumption of air-conditioning systems. If the existing air-conditioning host in 15% building is transformed into Gree magnetic suspension variable frequency centrifugal chiller, the energy consumption can be saved by1400 million kwh each year, the capital can be saved by1300 million yuan, and the new output value can be increased by more than 6.4 billion yuan. By 2020, China will build about 654.38 billion square meters of public buildings. It is assumed that 600-700 million square meters will be built every year, and 20% of them will use Gree magnetic suspension variable frequency centrifugal chillers. Compared with the current building energy consumption, it can save energy by 65.438+0.8 billion kWh per year, save funds by 65.438+0.6 billion yuan, and increase the output value by 8.3 billion yuan.

It can be said that the emergence of Gree's autonomous magnetic levitation technology will give greater guarantee for the country to complete the task of energy conservation and emission reduction on time-the energy consumption per unit GDP will be reduced by 16% during the Twelfth Five-Year Plan period.

How is the quality of Gree air conditioning?

In household air conditioners, Gree's cutting ability is good. If you buy it, you can choose brands such as Gree, Midea and Haier. Air conditioning mainly depends on the compressor. When you buy it, you can know exactly what brand the compressor is and where it is made. Mitsubishi's compressor seems good!

How about Gree inverter air conditioner used by everyone?

Just ordinary. After-sales service is also common, in fact, any air conditioner is the same. If you buy money, you use electricity. No matter how you save electricity, if you use more, you will have money. The more you use, the more you save, and the more you pay for electricity. Save if you use less, but why buy less? Shopping on demand and after-sales service are the key points.

The most energy-efficient air conditioner is not what it is, but how to use it.

Although energy-saving air conditioners can look at energy efficiency ratio or energy efficiency grade. With the same power consumption of 1W, the cooling capacity of 1 level energy efficiency can be 3.6W, and that of level 3 energy efficiency can only be 3.2w. Therefore, the energy efficiency of 1 will save electricity. Although air conditioners with high energy efficiency rating and energy efficiency ratio save electricity, improper use will still consume electricity.

In fact, air conditioning consumes a lot of electricity; Mainly depends on the method of use.

For example, if the set temperature is 16 degrees and the compressor of the constant frequency air conditioner cannot be stopped, then the nominal power consumption can be easily calculated.

If it is a variable frequency air conditioner, set the temperature at 16 degrees, the air conditioner may always run at high frequency and high power, and the power consumption may be more than the fixed frequency.

If the set temperature is 26 degrees, the fixed frequency can be operated intermittently, and the frequency conversion can be operated at reduced frequency and power, so that the power consumption is lower than the nominal power consumption, and the effect of saving energy and electricity can be achieved.

When the set temperature increases 1 degree, it can save electricity by 6~ 10%. There is no loss of energy efficiency ratio in this energy saving range.

Why is it recommended to set 26 degrees?

From the study of human comfort; The most suitable ambient temperature for human body is 27 degrees, and the temperature difference of thermal shock that human body can bear is about 5 degrees (which means going in and out between two different ambient temperatures indoors and outdoors), so the most suitable setting temperature for home air conditioner is between 26 and 28 degrees.

Setting this temperature can not only get a comfortable environment that is neither too hot nor too cold, but also save energy, electricity and money.

It is also recommended to buy inverter air conditioner, because when the inverter air conditioner reaches the set temperature, it will run at a reduced frequency and power, which is the most energy-saving. At this time, the compressor does not stop, runs at the most suitable frequency, is quiet and energy-saving, and the room temperature is stable between plus and minus 0.5 degrees, which is the most comfortable.

Therefore, the energy saving of air conditioning does not depend on which kind it belongs to, or even on energy efficiency, but on how to use air conditioning.

The self-contained energy-saving mode only forces the set temperature to run between 25 and 28 degrees.

I hope I can help you. If you are satisfied, please accept it. thank you ...

What is the overall strength of Gree brand? Is the air conditioner good?

Hello, everyone. As an employee of Gree and a guardian of quality, I am very pleased to see that most people say that Gree is good. So many years of quality work have not been done in vain. Due to work reasons and some confidentiality issues, I can only say what I should say. Gree's suppliers are excellent suppliers at home and abroad. The cost of products with the same power is higher than that of any manufacturer, which is the fundamental reason why Gree air conditioners are expensive. The quality management of suppliers is extremely strict, many projects exceed the national standards, and some components are also tested according to military standards. Internally, we require that all energy efficiency labels posted externally be regarded as Class B defects. Then, as the only brand specializing in manufacturing air conditioners in China-Gree, what else does it need? Of course, Japan also has a professional air conditioner manufacturer, that is Daikin, but as a China native, you have reason to give up such a good domestic brand, risk being reviled by thousands of people, and support Japanese goods without conscience.

How is the quality of Gree air conditioning?

Ok, I have used Gree air conditioner for many years, and the quality is very good. So far, there have been no problems.

How about Gree's inverter air conditioner?

Gree's inverter air conditioner is good, similar to Midea and Hisense. Constant speed air conditioning is what we often call ordinary air conditioning.

Because the working principle of variable frequency air conditioner is different from that of ordinary constant speed air conditioner, the noise is relatively lower and the temperature control is more accurate. The overall temperature fluctuation of the room is smaller, and the human body feels more comfortable. In addition, the inverter air conditioner avoids compressor wear caused by frequent switching on and off, and has a longer service life.

However, the price of inverter air conditioner is generally higher than that of fixed frequency air conditioner, and the difference is offset by its power saving. Therefore, buying inverter air conditioners does not necessarily save money, but it helps to protect the environment and save energy. For example, buying inverter air conditioners is like paying in full, and buying ordinary air conditioners is like paying in installments. Although the down payment is cheap, you have to pay interest every month, which generally does not save money.

Compared with ordinary constant-speed air conditioners, variable-frequency air conditioners have obvious advantages. In addition, most manufacturers' inverter air conditioners are relatively high-end products with good workmanship and performance. Therefore, it is best for families with conditions to give priority to purchasing inverter air conditioners.

How about Gree air conditioning? Is it good or not? How is the quality?

Gree air conditioning should be the first-line brand at home and abroad at present, with good quality.

Both my home and our unit are Gree air conditioners.

How about Gree's home central air conditioning?

Cost performance and energy efficiency are also among the best in the industry. In view of the previous sub-assembly capacity, Gree has developed very fast in multi-connection, and its sales volume is second only to Daikin, which is equivalent to Hitachi. If the budget is large, you can consider big money. After all, there are many product lines and high stability. Gree's words are mainly about refrigeration, and the price of domestic brands has an advantage over foreign brands. Hitachi has also done a good job in multi-linking, but it tends to be large-scale multi-linking, and there are fewer households. If you want to choose domestic products, you don't have to consider anything except Gree. If you don't mind Japanese brands, Daikin is a good choice.

Who has used Gree air conditioner?

Gree enjoys a good reputation in the domestic market. Although the quality is slightly worse than Mitsubishi, it is absolutely first-class compared with other similar brands in China. My mother bought a Gree 1 overclocking hook in 2006, and the cooling effect and heating are still good. Prepare to change Mitsubishi KF-25 at the end of the year.

How about Gree central air conditioning?

High quality and low price are the common aspirations of most consumers, but such products are often rare. Compared with imported central air-conditioning brands, the initial investment of Gree central air-conditioning is lower. Due to the long product development cycle and many core technologies, the prices of imported central air-conditioning equipment and auxiliary materials are generally higher than those made in China. Take Gree inverter central air conditioner as an example, the total quotation is less than 30,000, while the quotation of imported brands is around 40,000. However, compared with domestic central air-conditioning brands, Gree central air-conditioning is more cost-effective.

The refrigeration effect of frequency conversion series is good: Gree frequency conversion central air conditioner has good refrigeration effect because its compressor will not be turned on frequently, but will gradually reach the set temperature, keep the balance between low-frequency operation and refrigeration loss, keep the room temperature constant, and there will be no problem of uneven cold and heat.

Disadvantages: Heating in winter is very energy-consuming: due to the influence of climate, Gree central air-conditioning can't work normally below -5℃, so it is often necessary to install electric auxiliary heating devices, which is very energy-consuming. In addition, the heating effect of Gree central air conditioning is unstable in winter, and the cooling effect will be greatly reduced due to low temperature, rain and snow.

There is no strict installation specification: "three points depend on quality, seven points depend on installation", which is a common saying in the central air-conditioning industry and also reflects the importance of installation to the central air-conditioning industry. Compared with the installation of imported central air-conditioning brands, there is no authoritative installation standard in the domestic central air-conditioning market, especially in terms of auxiliary materials. Gree lacks strict and unified installation specifications for central air-conditioning, which is one of the main reasons for the frequent explosion of central air-conditioning in Gree in recent years.

Short service life and poor after-sales maintenance: the service life of Gree central air-conditioning is between 8- 15 years, and the service life of imported central air-conditioning brands is over 15 years; In addition, imported brands such as Daikin, Trane and Carrier. All of them expand the market by providing professional post-maintenance, while the national brand central air conditioners dominated by Gree are not regularly maintained at present, but wait until the central air conditioners fail.