What is the heating effect of air energy heat pump promoted from coal to electricity this year?

As we all know, "coal to electricity" was first implemented in Beijing. Beijing's "coal to electricity" is divided into two stages. From 20 13 to 20 15, there are many disputes about poor heating effect and high electricity bill in the pilot village of "coal to electricity". But after 20 16, the satisfaction was improved. So in 20 16, what changes did the Beijing government make to make the satisfaction suddenly high?

("Economic Half-hour" program, investigation on "coal to electricity")

According to the author's investigation, in the past, the "coal to electricity" equipment in Beijing mainly included "direct heating equipment" or "energy storage electric heater". In the pilot projects of 70 villages in 20 13 and 20 14, 70% users chose "direct heating". In 20 15, the government focused on promoting "energy storage". And 20 16 is the first year that air energy heat pump and ground source heat pump, as alternative heating equipment, really entered the homes of ordinary people. In that year, the number of users of "coal to electricity" in rural areas of Beijing increased by spurt. In that year, air energy heat pump users were added 15438+000000.

So why is air energy heat pump good? Before discussing this problem, let's discuss another one. Why are "direct heating" and "energy storage" gradually being eliminated?

Direct-heated electric heating equipment is a kind of equipment that directly converts high-grade electric energy into low-grade heat energy, but the energy conversion efficiency is too low, which leads to huge power consumption. Moreover, in order to promote direct heating in rural areas, it is necessary to increase the power supply capacity of rural power grids on a large scale, and the capacity of each household should be increased from the current 4 ~ 6 kW to more than 10 kW. The investment in power grid transformation is huge, at least10 billion.

Energy-storage electric heater is a kind of heating equipment which uses low power period at night to heat energy storage and give off heat during the day. Its heating principle sounds beautiful, but the actual operation effect is not ideal, because the heat release speed of the energy storage electric heater is uncontrollable. Ordinary people go out to work during the day, there will be people at home at night, and the energy storage electric heater will heat up during the day. When heating is needed in the evening and at night, the heat stored in the energy storage electric heater can no longer meet the needs of the whole family and has to be re-energized. This time is the peak period of electricity consumption, and the electricity bill is very expensive.

("Economic Half-hour" and "Coal to Electricity" Survey: Electricity has changed, why is coal still there? Liu, a villager in Zhouzhuang Village, Fangshan District, Beijing, complained that his energy storage electric heater was "not warm")

However, air energy heat pump is different. It is driven by a motor, using the working principle of vapor compression refrigeration cycle and using ambient air as heat source for hot air heating. Although it is electric heating, it does not directly use electricity as the energy source for conversion, so it not only consumes little electric energy, but also has a very small load on the power grid.

In the past, many people said that the outdoor temperature in northern winter was too low for air energy heat pump products to work. But in fact, in recent years, through the continuous research and improvement of various air energy enterprises, especially the promotion of frequency conversion technology, the air energy heat pump can work normally at -25℃ for a long time, and the effect is still very good. Last year, the lowest temperature in Beijing reached -20℃, but according to the data obtained by Nuntai, an air energy heat pump manufacturer, almost every household in Beijing used about 2500 degrees of electricity last winter, and the indoor temperature could be above 15℃. This kind of electricity consumption, not to mention low-cost electricity calculation, even if the rural power is 49 cents, it will cost more than 1000 yuan, which is similar to burning coal for heating.

With the maturity of technology, air energy heat pumps with low energy consumption and good effect, especially variable frequency air energy heat pumps, have successfully entered the stage of large-scale commercial promotion, and the phenomenon that electric heating equipment is abandoned as soon as it is installed has been greatly improved. Therefore, the author thinks that the emergence of air energy heat pump is the real reason why the reputation of the northern "coal-to-electricity" was first degraded and then the ice and fire were raised.

Extended reading

Don't believe it, your life is being influenced by Hostains-the main board of Hostains Guangdong Co., Ltd. is listed.

Grader: Strive to Create a Brand-new "Grader Innovation Ecosphere"

Tiansen: If you don't "work hard", why can you win the future?

Rong Shi Li Jing Te, walking on the pilgrimage road.

The No.1 15 Chamber of Commerce in Wucheng County-Beijing Wucheng Enterprise Chamber of Commerce was established in Beijing.

Is the coal mine really finished? China combustible ice trial mining for 60 days! Has the death knell sounded in the coal industry?

Don't go to the name, still water depth-Xin Runfan and Fan case passed the burning inspection at one time.

Rongshi Lijingte is a model of "Made in Germany" in China.

Dezhou Six donkey kong Helps North China Refrigeration