New energy efficiency standards for air conditioners are officially implemented

New energy efficiency standards for air conditioners are officially implemented
Recently, a major event has occurred in the air-conditioning industry, and the new energy efficiency standard has confirmed the implementation time. On April 21, 2020, in accordance with the "Energy Efficiency Label Management Measures" (National Development and Reform Commission, the original AQSIQ No. 35), the National Development and Reform Commission and the General Administration of Market Supervision organized and revised The marked product catalog (fifteenth batch) "and related implementation rules are published.

For merchants, after the release of a series of implementation rules, new products such as air conditioners that meet the new energy efficiency standards will be able to complete the energy efficiency label filing and go on sale. For consumers, what does the determination of the energy efficiency rating of air conditioners mean? Today, I will take you to understand the knowledge points of air conditioning energy efficiency ratings that cannot be ignored.

With the advent of summer, air conditioning has become an "artifact" for many people to relieve heat and cool down, and the air conditioner at home is gradually used. I do n’t know if you are considering the brand and price when you buy an air conditioner, do you also pay attention to the energy efficiency of the air conditioner?

Many people should know that air-conditioning products are divided into first-level energy saving, second-level energy saving, and third-level energy saving. According to GB12021.3-2010 "Limited Values and Levels of Energy Efficiency of Room Air Conditioners" released in 2010, the standard for the classification of air conditioning energy efficiency is the energy efficiency ratio, and the energy efficiency ratio can be divided into 1, 2, 3 levels.

The calculation of the energy efficiency ratio is actually the ratio of "refrigeration (heat) amount and output power". To put it plainly, the larger the value of the energy efficiency ratio, the less energy is consumed by the same cooling (heating) amount. The point is that the more power and energy saving.

According to the standard, the energy efficiency ratio level is 1, which belongs to the international advanced level, the most power-saving and the lower the energy consumption. The energy efficiency ratio level of 3 is also the average level of the Chinese market. The energy efficiency ratio level 2 is sandwiched between 1 and 3 spaces, which is more power-saving than level 3, but slightly inferior to level 1.

Seeing this, I believe everyone has a clear understanding of the energy efficiency rating of air conditioners, so when we buy air conditioners, what level should we choose the best? Is it really only necessary to go straight to the level 1 energy efficiency air conditioner to start? ?Not always!

First, let's take a look at the power saving effect of air conditioners with different energy efficiency ratios. Taking the two-split air conditioner commonly used in the family as an example, the rated cooling capacity is below 4500W, and the energy efficiency ratios of energy efficiency grades 1, 2, and 3 are respectively It is 3.6, 3.4, 3.2.

Under the conditions of the same ambient temperature, cooling space, etc., we will run a two-horse energy efficiency split type air conditioner and a two-horse energy efficiency split type air conditioner for 24 hours, and the result is:

The cooling capacity of 2 HP air conditioners is: 2 × 2324W = 4648W

The cooling power corresponding to level 2 energy efficiency is: 4648W ÷ 3.4 = 1367W

The cooling power corresponding to level 3 energy efficiency is: 4648W ÷ 3.2 = 1452W

Hourly cooling power difference = (1452W-1367W) × 1h / 1000 = 0.085kWh

24-hour cooling power difference between second-level energy efficiency and third-level energy efficiency = 0.085 × 24 = 2.04kWh

Theoretically, when operating under the same conditions for 24 hours, 2HP energy efficiency split air conditioners save about 2.04 degrees of power compared to 2HP 3 energy efficiency split air conditioners, which shows that although the higher the energy efficiency level, the more power saving , But the ratio of power saving does not seem to be great.

Therefore, although Class 1 energy-efficient air conditioners can save more electricity and money, according to the current normal situation in the air-conditioning market, some brands of Class 1 energy-efficient air conditioners are priced several hundred or even more expensive than Class 3 energy-consuming air conditioners. Thousand yuan. Judging from the habits of ordinary people who use air conditioners at home, they can use three or four months a year. The electricity bill may save two to three hundred, but from other aspects, such as the cost of purchase, repair, maintenance, etc., It seems that the cost is higher.

Therefore, the author believes that the average family will normally turn on the air conditioner for a few months a year, and it may be more suitable to choose a level 2 energy efficiency air conditioner. Although it does not save power compared to level 1, it will be more cost-effective in terms of purchase and maintenance. Compared with Class 3 energy-efficient air conditioners, it is more environmentally friendly, energy-saving, and more comfortable.

Of course, these things are different. If you want to be more environmentally friendly, and if there is almost no "holiday" in the air conditioner for a year, then it may be more suitable to buy a level 1 energy-efficient air conditioner. But if it is not opened several times a year, and the budget is not enough, then don't think about it, just start with 3 energy-efficient air conditioners.

Summary: The detailed list of standards for energy efficiency of air conditioners can quickly improve the energy efficiency of products on the one hand, responding to the country's long-term energy saving and environmental protection goals and directions. The second is to let consumers understand the energy saving level of products more clearly and make purchases that suit them. The third is to regulate the industry, unify the evaluation criteria, protect the enthusiasm of advanced enterprises, and regulate market competition. In general, the issuance of energy efficiency label implementation rules can be regarded as a win-win situation.

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