The high-rise buildings should not be installed solar water heater? Why more cost-effective to buy inverter air conditioner?

Into the winter, a lot of places in the North extensive use of solar panel water heaters, energy-saving and environmentally friendly, Dongguan Why can not more use it?

The air conditioning is essential household appliances, but fixed-frequency air conditioning, inverter air conditioner market, how do we choose?

Two days ago, the Science and Technology Bureau, the Municipal Association and the Municipal Association of refrigeration and air-conditioning in the City Science Museum organized of Dongguan Innovation Forum 2012, invited Guangdong University of Technology, Guangzhou University, Zhongkai College of Agricultural Engineering, Dongguan University of Technology experts and professors focus "Dongguan low carbon economy, refrigeration and air conditioning the development of new technologies. "

Experts said, less use of solar water heaters in Dongguan, is because high floors households, while the roof area is small and can not meet the needs of all users.

Although the inverter air conditioner than fixed-frequency air conditioning 1000-2000 yuan more expensive, but the energy-saving rate can recycle up to 50%, 3-5 years, this "extra" costs.

9 floors building solar water heaters should be installed

Four energy-saving industry in the industrial, construction, transportation, and living in the building energy efficiency is regarded as the highest areas of the "heat".

Civil Engineering Associate Dean of the School of Guangzhou University, said Professor Ding Yunfei, building energy efficiency to reduce environmental pollution, one of the most direct measures to improve the quality of the urban environment.

Previously, received attention for building energy efficiency is not so high industrial energy efficiency.

Ding Yunfei, a lot of people on building energy efficiency do not understand simple point that is to improve the energy efficiency of the building, the rational use of energy. Including heating, air conditioning, hot water supply, cooking, lighting, household appliances and other energy consumption. " , in the developed areas in Guangdong, the national requirements Guangdong energy saving of 18% in the next five years.

It can be foreseen that the field of building energy efficiency will be the market of Dongguan enterprises "mettle".

At present, the province has developed a lot of building energy-saving measures, such as unified install  solar cell  water heaters require new residential.

"However, this is conditional installed 9 layers would be more appropriate. Imagine, the installation of 30 multi-storey building, on the top floor so the slightest position, where collectors do?" Said Ding Yunfei, too high-rise buildings to install, set The hot area is not enough, the water supply can not meet the needs of all users, it is not feasible.

Than the fixed-frequency air conditioning inverter air conditioner energy by 50%

Another piece of building energy-saving potential of land, in the air conditioning energy.

Now available in fixed-frequency air conditioning, inverter air conditioner, many varieties, there are also significant differences in price.

Brand fixed-frequency air 1800 yuan can buy, the inverter air conditioner 4000 yuan price.

The public should be how to choose?

Ding Yunfei said, the traditional fixed-frequency air using the compressor kept open, stop "to adjust the indoor temperature between open open the stop will consume a lot of power.

Inverter air conditioner inverter control technology to regulate the compressor speed according to the ambient temperature, room temperature fluctuation is small, less power consumption.

"Although the inverter air conditioner than fixed-frequency air conditioning your 1000-2000 energy saving rate of up to 50%, 3-5 years, you can recycle this" extra "cost." Said Ding Yunfei, Moreover, a 10 air-conditioned life in general -12 years, minus the payback period, the remaining earnings period.