Key words: Ground source heat pump energy saving Beijing Juer alley plot, district groundwater heat pump heating. Per square meter heating standard coal 15 kilograms, than the original coal-fired boiler room heating energy consumption per kilogram of 25 kilograms of standard coal compared to 40% energy saving, investment incremental recovery period of about 6 years.
Through the comparative analysis of typical projects, we can see that the use of ground source heat pump technology, heating only, can save 30-50% of energy.
According to the actual engineering estimates, groundwater-based ground source heat pump, the initial investment of 300-400 yuan / square meter system; soil ground source heat pump system, the initial investment of about 350-450 yuan / square meter. Generally speaking, the initial investment is 1-3 times higher than the current heating system of the conventional coal-fired boiler room, which is 34% -150% higher than the combined heat and power system. However, none of these comparisons have calculated the investment in traditional heat transfer infrastructure, nor did they quantify the cost savings of ground-source heat pump systems in addition to heating, cooling and providing fresh air and hot water.
According to the winter operation analysis report of 11 projects using ground source heat pump technology in Beijing Municipal Bureau of Statistics Information Center, in the case of heating, but also for cooling, hot water and fresh air, the unit area expenses from 9.48-28.85 63% of the projects are lower than the heating price of coal-fired central heating, and all the investigated projects are lower than the heating prices of fuel, gas and electric boilers. According to preliminary calculations by experts, the use of ground source heat pump technology, incremental investment payback period of about 4-10 years.
Promote the application of the main problems
At present, the main problems in the application of ground source heat pump technology in the following aspects.
First of all, as China has long failed to educate and conserve energy and protect the environment, it has not formed a strong public opinion and a social environment that has made all sectors of society lack enthusiasm and initiative in using energy-saving technologies and equipment. In addition, the development and application process of ground source heat pump technology is short, and its social awareness is not enough. In particular, the lack of awareness among the chief decision makers of the owner units has a direct impact on the widespread use of this new energy technology.
Second, the initial investment of ground-source heat pump technology appears to be high, affecting some homeowners' choices of adopting the technology. However, this system has been exempted from the infrastructure investment in energy transmission and transportation process, and the system can simultaneously cool and fresh air. This price advantage of great overall cost saving has not been fully recognized by the owners.
Third, design issues. Design units generally do not quite understand this energy technology, equipment selection or not to use inappropriately.
Fourth, there is inertia for traditional energy use. For example, Beijing has formed the infrastructure, management and service facilities and systems that use traditional energy resources. Traditional energy use methods are also undergoing technological transformation, expanding users and forming scale. In fact, competition and conflicts with the use of new renewable energy sources have been formed problem.
A few suggestions:
First, immediately proceed to organize scientific, economic, technical and environmental assessments.
Second, giving new renewable energy its rightful place in energy use policies.
Thirdly, we should formulate specific plans for the types and regional distribution of local energy use, clarify local energy use technology routes and arrange the use of new types of renewable energy from the overall plan.
Fourthly, formulate economic policies that encourage the use of new renewable energy sources.
Fifth, to make design and development units an active advocate and practitioner of new renewable energy use.
Sixthly, for government investment projects, the use of mature and mature renewable energy sources to replace traditional energy sources.
Seventh, increase the reform of the traditional system of energy use.
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