Energy efficiency is not the only standard for purchasing air energy water heaters

As a new type of water heater products, air energy water heaters have become the mainstream of solar energy, electric heating, and fuel heating in recent years because of its advantages in the collection of electric water heaters, gas water heaters, and solar water heaters. product type.

On October 1, 2013, China's first energy efficiency standard for air energy water heaters began to be implemented, setting a listed energy efficiency threshold for air energy products. As a product with other energy efficiency advantages, it seems that energy efficiency has also become an alternative. The only standard for the purchase of air energy heaters. However, the reporter's investigation found that the fact is far from this.

In October last year, the “Energy Efficient Limits and Energy Efficiency Ratings of Heat Pumps for Hot Water Heaters (Heat Pumps)” began to be implemented. The minimum energy efficiency thresholds for “static heating type COP ≥ 3.4 and cyclic heating type COP ≥ 3.7” were set for ordinary domestic air energy water heaters. . The energy efficiency standard has been implemented for nearly half a year. The reporter recently visited some home appliance stores and air-energy water heater stores in Kunming and found that the energy efficiency marked by the air energy water heater products sold can meet or exceed the national minimum energy efficiency requirements.

According to industry insiders, the energy efficiency standards implemented last year and the earlier national standards for products have the same minimum energy efficiency requirements for air energy water heaters, except that energy efficiency standards have refined the energy efficiency grades of different products. That is, in 2009 after the introduction of the product national standard qualified air energy products, energy efficiency ratio should reach the minimum threshold of energy efficiency standards.

The personage inside course of study also indicated at the same time, because the energy efficiency standard is mandatory to the restriction of energy efficiency of the products, therefore does not rule out the manufacturer that some product lines are affected thereby, the energy efficiency of the label is on the products; When consumers buy the relevant products, it is better to choose Buy reputable "big" products.

"Big" more quality assurance

“At present, the main purpose of most consumers to purchase air energy is to consider energy saving.” The head of a well-known air energy manufacturer also told reporters that consumers are advised to buy “big” products, not only “big” The energy efficiency of the products indicated by the manufacturers is more trustworthy, and the product quality of the “big” manufacturers is more assured.

According to the person in charge, although the working principle of air heaters and air conditioners is just the opposite, it is actually more demanding on product quality and technology than air conditioners. As many air energy manufacturers nowadays, on the critical component of the compressor, the air-conditioning compressor is simply used, and its production is exactly like a simple assembly. However, in fact, the temperature and pressure of the internal piping system of air energy and the working environment of the compressor are all higher than those of air conditioners. If there is no professional manufacturing technology, under long-term high temperature and high pressure conditions, not only the product energy efficiency can not meet the requirements, but the compressor and piping are also easily damaged. Therefore, in contrast, "big" manufacturers have more professional technologies and experience in air energy product development, and their products are also much more reliable in terms of quality than "simple assembly."

Cognition is still the biggest obstacle to promotion

"Accordingly, the air energy in Yunnan should be well promoted, but in reality it is more difficult." In an earlier interview, Gree Yunnan General Manager Hou Ping told reporters that compared with traditional electric and gas water heaters, air energy products It has the outstanding features of energy saving and environmental protection. Compared with solar water heaters widely used in Yunnan, air energy has the advantages of easy installation, environmental protection due to rainy weather, high-rise buildings, etc., wider use, and all-weather practical advantages. However, compared with the engineering support, the promotion of a larger-capacity home retail market has been greatly limited by consumers' insufficient awareness of products. At the same time, special installation requirements for air energy products such as re-laying and wiring are also required, and many consumers have to “go back” before buying air energy.

How to make "air energy" more energy-efficient?

Last winter, Kunming experienced many low-temperature rains and snows, and some readers reflected that the use of air-powered water heaters in homes does save power, but when the temperatures are low, power consumption seems to be somewhat different from those advertised by manufacturers. After consulting the industry insiders, the reporter learned that the energy efficiency labelled by air energy products is measured by the “standard environment” test, which is usually 23°C±2°C; if the air working temperature is much lower than this temperature, the energy efficiency ratio is indeed It will decline; however, if the temperature is higher than this level, the energy efficiency ratio will be higher than the value of the indicator, so users do not have to worry about changes in product energy consumption in a certain season.

Industry insiders also have a few ways to save energy for air energy heaters. First of all, choose the right size product. The size of the main unit matches the size of the water tank. If it is too large or too small, it will consume more power. Secondly, when the air can be installed, it should be installed in a sunny and warm place. The enclosed balcony is the first choice; The air should be as close as possible to the water end, and it is easy to cause heat loss when the distance is too far. In addition, the buried hot water pipe must be insulated.