The energy consumption per unit area of buildings in China is still several times that of developed

At present, China's energy consumption per unit of construction area is equivalent to 2 to 3 times that of developed countries with similar climatic conditions, so we must face up to the fact that China's energy, land, water, materials and other resources are seriously short and the actual utilization efficiency is low, and the environmental pollution is serious and is still intensifying.

Note: Energy consumption per unit building area is an indicator to measure the energy-saving benefits of a project, and it is also an important indicator for the national assessment of energy conservation and emission reduction; The specific standards for energy consumption per unit of construction area are: electricity consumption is converted into standard coal 10,000 kWh), and water consumption is converted into standard coal 10,000 m3).

In 2005, the relevant data statistics were 2 3 times, but according to the "2014 China Building Energy Conservation Development Research Report", the energy consumption per unit of building is only about 1 3, 1 4 in developed countries, I don't know whether the data is true, or the difference in data statistics is unknown.

Anyway, there is nothing that can be compared with foreign countries. All kinds of pride, all kinds of boasting, all kinds of putting gold on their faces.

Housing prices are all manipulated by interest groups. How to come down?

The best policy abroad, the house that can't be sold in 3 years can be anyone. The next 3 years can not be sold and you have to pay taxes. It's not that it can't be managed, it's just that the interests of some people are involved.

Summary. Of the nearly 40 billion square meters of buildings in China, about 95 are high-energy-consuming buildings, and about one-third need energy-saving transformation.

According to the information provided by the Ministry of Construction, China's existing buildings are nearly 40 billion square meters, of which more than 95 are high-energy-consuming buildings, and at the same time, China is new every year.

The area of houses built is about 2 billion square meters, of which more than 80 are energy-intensive buildings. From a national point of view, the proportion of building energy consumption in the terminal energy consumption of the whole society is 27 8. This situation has caused energy burden and environmental pollution to the society, and restricted the implementation of China's sustainable development strategy.

In order to promote the work of building energy efficiency in China, the Building Energy Efficiency Center of the Ministry of Construction and the German Energy Agency jointly held a Sino-German seminar on modern building energy efficiency technology. The two sides discussed and cooperated on building energy efficiency and carbon dioxide emission reduction, and jointly compiled and published the "China Building Energy Efficiency Handbook".

Recently, China put forward the overall goal of saving 20 energy during the "Eleventh Five-Year Plan" period. Among them, 110 million tons of standard coal should be saved for building energy conservation, which is close to half of the total target. By the end of 2006, a total of 1.06 billion square meters of energy-saving construction area had been built across the country.

How many of the buildings planned and under construction in China are high-energy-consuming buildings, and how many energy-saving buildings have been built.

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Of the nearly 40 billion square meters of buildings in China, about 95 are high-energy-consuming buildings, and about one-third need energy-saving transformation. According to the information provided by the Ministry of Construction, China's existing buildings are nearly 40 billion square meters, of which more than 95 are high-energy-consuming buildings, and at the same time, China's annual new housing area is about 2 billion square meters, of which more than 80 are high-energy-consuming buildings. From a national point of view, the proportion of building energy consumption in the terminal energy consumption of the whole society is 27 8.

This situation has caused energy burden and environmental pollution to the society, and restricted the implementation of China's sustainable development strategy. In order to promote the work of building energy efficiency in China, the Building Energy Efficiency Center of the Ministry of Construction and the German Energy Agency jointly held a Sino-German seminar on modern building energy efficiency technology. The two sides discussed and cooperated on building energy efficiency and carbon dioxide emission reduction, and jointly compiled and published the "China Building Energy Efficiency Handbook".

Recently, China put forward the overall goal of saving 20 energy during the "Eleventh Five-Year Plan" period. Among them, 110 million tons of coal should be used to achieve the standard of energy conservation in buildings, which is close to half of the total target. By the end of 2006, a total of 1.06 billion square meters of energy-saving construction area had been built across the country.

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There are two ways to define building energy consumption: building energy consumption in a broad sense refers to the energy consumption of the whole process from the manufacture of building materials, building construction, to building use. Building energy consumption in a narrow sense, that is, the operating energy consumption of buildings, is people's daily energy consumption, such as heating, air conditioning, lighting, cooking, laundry, etc., which is the leading part of building energy consumption.

As economic incomes grow and quality of life improves, the focus of construction consumption will shift from "hardware (decoration and durable consumer goods)" to "software (functional and environmental quality)", so the energy consumption (air conditioning, ventilation, heating, hot water**) required to ensure indoor air quality will rise rapidly.

The climate varies widely between the northern and southern regions, with only the northern region using full winter heating. China is located in the middle and low latitudes of the northern hemisphere, with a vast area, spanning multiple climatic zones such as severe cold, cold, hot summer and cold winter, mild and hot summer and warm winter. The average outdoor temperature in most areas of the hottest month of summer exceeds 26 and requires air conditioning; The average winter temperature in hot summer and warm winter areas is higher than 10, while the temperature difference between indoor and outdoor in severe cold areas can be as high as 50 in winter, and heating is needed for 5 months a year; At present, about 70% of the construction area of cities and towns in northern China adopts centralized heating in winter, while most areas in the south have no heating measures in winter, or only use air conditioners, small boilers and other heating methods scattered in the building.

2) There is a large difference in the energy consumption of urban and rural housing. On the one hand, the types of energy used by urban and rural residences in China are different, with coal, electricity, and gas as the main source in cities, while in rural areas, in addition to some coal, electricity and other commodity energy, biomass energy such as straw and firewood is still the main energy source for farmers in many areas; In addition, at present, the average annual consumption expenditure of urban and rural residents in China is more than 3 times, and the number of various electrical appliances and the use time of urban and rural residents are also quite different.

3) the non-residential civil building is called a public building, it is found that the energy consumption per unit building area of public buildings of different sizes in addition to heating is very different, when a single building area exceeds 20,000 square meters, when the first air conditioning is adopted, the energy consumption per unit building area is 3 8 times the energy consumption of the small-scale public building that does not adopt the first air conditioning, and its energy consumption characteristics and main problems are also different from those of small-scale public buildings. [1]