Ground source heat pump development to the "advanced"

Abstract: The ground source heat pump market has gradually grown into a better place in China after years of development. However, the situation in various regions has been mixed. It is reflected in the uneven level of overall resource planning, specific project implementation, and government supervision and management. Promoting the development of some local heat pumps with better experience in provinces and cities is conducive to guiding more regions to scientifically develop markets, so as to achieve a win-win situation for energy-saving emission reduction targets and social economy.

The inclusion of ground source heat pumps in the power demand side management subsidy project has played a crucial role in the development of this technology in Hebei Province. Liu Ziqiang said that since 2007, three major categories of technology, including frequency conversion technology, dual-accumulation technology, and ground-source heat pump technology, were selected in the subsidy catalog, and the introduction of the policy has greatly changed the development of the local geothermal heat pump market. From the source, leaders of all levels in Hebei Province attach great importance to ground-source heat pump projects, and the efforts of all sectors of society, so the proportion of subsidy projects on the power demand side can also reflect the rapid increase in ground-source heat pump projects: from 15.5 in 2007. The percentage has increased to 50.9% in 2011. Currently, the ground source heat pump project has accounted for more than half of all subsidy projects.

As of 2011, Hebei Province has subsidized 100 ground source heat pump projects: 14 in 2007, 10 in 2008, 25 in 2009, 24 in 2010, and 27 in 2011. Currently, the province is testing and accepting ground source heat pump alternative projects in 2012, involving a total of 33 projects.

First, more and more ground-source heat pumps, water-source heat pumps have relatively reduced Hebei Province is a resource-deficient area, a serious shortage of water resources, serious over-exploitation of groundwater. The per capita water resources in Hebei Province are 1/7 of the country and 1/25 of the world. At the same time, the operation of the water-source heat pump system requires the extraction of groundwater, but at present, from the perspective of actual operation, it does not guarantee 100% recharge of groundwater, resulting in serious waste of water resources. In addition, the plain area of ​​Hebei Province is a region with good suitability for the ground source heat pump system and is very suitable for the application of this type of system. Therefore, in recent years, the development of local ground source heat pump has been rapid, and the development of water source heat pump systems has tended to slow down.

Second, the form of diversification In recent years, with the promotion and application of soil-source heat pump systems in Hebei Province, the form has become more abundant: From the perspective of heat sources, groundwater sources, soil sources, sewage sources, industrial waste water waste heat and Surface water sources and other forms; from the perspective of technical applications, there are houses, trading floors, office buildings, schools, hospitals, factories, etc., covering the vast majority of architectural forms.

3. The development trend of ground source heat pump systems in Hebei Province in the form of heat exchange stations and energy suppliers is diversifying into heat sources, establishing district heating and cooling stations, and developing the direction of heating and cooling of various types of buildings in the region. For example, using the waste heat of industrial waste water from Shijiazhuang refinery and chemical fiber plant to establish a ground heat pump system heat exchange station, which can provide heating for buildings of 20 million square meters; using the waste heat of industrial waste water from Shijiazhuang Steel Plant, it can be 10 million square meters of construction Heating has become a new type of heating energy supplier.

Fourth, EMC (contract energy management) model affirmed Last year, with the rapid development of ground-source heat pump market, Hebei Province also appeared in the EMC model, that is, a professional ground source heat pump company to invest in the construction of ground source heat pump heating system, residential area, office building Others provide heating services and charge heating fees. For example, there are few thermal power plants in Shijiazhuang. In this case, the heat pump system has a great promotion effect. At present, most of the local use of ground source heat pump forms. For another example, Xingtai City Nangong Greenfield Geotechnical Engineering Co., Ltd. of Hebei Province invests in the construction of a ground-source heat pump system heating station to provide heating for a 130,000-square-meter residential community building; Guangping County invests in the construction of a ground-source heat pump heating station. 100,000 square meters of building heating. There are a lot of companies involved in this work, the use of capital advantages to attract investors, is a good model for ground-source heat pump companies can learn.

V. Promotion of Renewable Energy Policy In March 2011, the Ministry of Finance and the Ministry of Housing and Urban-Rural Development jointly issued the “Notice on Further Promoting the Application of Renewable Energy Buildings” by the Ministry of Finance, the Ministry of Housing and Urban-Rural Development, and the 2011 Renewable Energy Sources. The “Application Notice for Construction Application” and other documents require that provinces put forward the status quo and application potential of renewable energy building application development based on a full assessment of the renewable energy resource conditions and building energy demand in the region. Hebei Province is divided into three pieces: the first is Zhangjiakou, Chengde, Tangshan, Qinhuangdao; the second is Langfang, Zhangzhou, Hengshui; the third is Baoding, Shijiazhuang, Xingtai. This is a scientific division based on energy characteristics and economic development level. At present, the province has included nine cities and counties including Tangshan City, Chengde City and Xinji City in the National Demonstration Project for Renewable Energy Building Application City and Rural County Demonstration Project for Renewable Energy Building Application.

Sixth, the establishment of municipal energy associations in Hebei Province attaches great importance to the application of renewable energy in buildings, the city has set up a renewable energy associations. The work of these associations focuses on the application of solar energy, ground-source heat pumps, and effective management coordination. This measure effectively regulates the design and construction of ground source heat pumps throughout the country, greatly promoting the technical improvement of ground source heat pumps and increasing the proportion of applications in construction. VII. Development of Ground Source Heat Pumps There are still ground-source heat pump technologies in Hebei Province after several years of rapid development. Their advantages of energy conservation, emission reduction, and convenience of use have become increasingly prominent. However, unsuccessful cases have also increased and have seen frequent economic disputes. Seriously affected the reputation of the industry, to a certain extent, restricted scientific development. The outstanding contradictions can be summarized as "the lack of an effective authority to participate in supervision and management." At present, professional research institutions, design departments, and construction teams with professional qualifications, construction supervision and management companies are working together to form an industrial chain. From the design of the project to the final operation and management, the entire chain needs a third-party testing agency. Only the entire process can be effectively supervised and the ground source heat pump market can develop healthily.