Recently, the Vice-Minister of the Ministry of housing and urban Qiu baoxing in sixth international green building and energy-saving Assembly of new technologies and products Expo, China's largest building energy-saving potential of the six areas first town heating metering and reform.
National "eleventh five-year" plan clearly put forward, "eleventh five-year plan" period unit GDP to energy-saving 20% of the country to save 2.4 million tons of standard coal, building energy efficiency to achieve 1.01 million tons of standard coal. Heating energy is focused on building energy efficiency, and the heating is the focus of energy-saving heating systems. The State Council of the energy-saving emission reduction and comprehensive programme requirements in building energy saving, energy-saving heating must take at least 1/3 of task indicators. However, according to World Bank reform and "heat" energy-saving construction project office expert Xin Tan statistics, the current implementation of hot charging is only the General heating area 39 million square meters of 1.2%. Since 1996 the original construction of the building energy-saving "ninth five-year plan and the planning of 2010, 14 years in the past, the vast majority of our northern cities of heat metering and charging reform did not see results.
"Great hand hands" total push heat metering
Participation in "the eleventh five-year plan" Science and technology program of scientific research work of the Chinese Institute of Mr. guangyu senior engineer said in an interview, before and after 2000, a large heat metering is a small "two hands" driving the "big advance". "Big hands" is the country's heating system reform. Residential commercial and residential heating in winter in the North are inevitable from prehistoric civilization's "dark make-up" diversions "Ming Bu" qiantouming. "But the heat is very unique, it is not the same as hydropower, the user specific merchandise purchased a hot future cannot be honestly held at home, as long as there is between the adjacent room temperature gradient it through wall to transfer of ownership. "Mr. guangyu stressed.
There have been experimental developer made, in a residential building in the middle cell close its indoor heating system, passed on from the neighbour's heat, it can be kept at room temperature 10 ℃. Some estimates, in order to maintain this 10 ℃, the adjacent user probably had to afford 1.5 times of energy. This charge is unfair. And if in between wall increased insulation the construction area and layer high losses.
Technical research and development of space-saving thanks to the fair, attracted a large enterprise or personal interest, with the China Academy of building environment and energy saving Dean during words, is "a powerful figure metering" — heat meter method, thermal distribution table method, time area-off method, flow temperature method ... According to statistics, according to the different methods of producing heat metering device of the enterprise has more than 200.
"There is a small hand, is a group of enterprises that sell the tubes is not weak hand. "Mr. guangyu admits. This reporter has learned that my old heating system with less, risers, groups of more trouble to the radiator. By the 1990s, plastic pipe as a new building stand out, thanks to the heating system, heating metering, "pipe enterprises" spring. The old system was abandoned and replaced by indoor levels of heating systems. The advantages of the new system is the heating system is based on family units and can be equipped with household heat meter, or install the turn-off valve; indirect advantages is the end of resistance for heating larger, though in terms of energy consumption of the pump, but helps to increase the hydraulic balance; potential "benefits" is the need to use a lot of plastic pipes. However all kinds of plastic pipes of tombs of varying performance of up to 50 years, has 20 years of supply cannot be guaranteed. Coupled with construction, renovation and construction of emergency, the new community to live two years of collective water seepage.
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