Ground source heat pump heating market scale 70 billion yuan

Geothermal heating and geothermal power generation are the main targets for the development and utilization of geothermal energy during the “Twelfth Five-Year Plan” period. The use of shallow geothermal energy in the form of heat pumps is the main method for the development and utilization of geothermal energy in China at this stage. In terms of development goals, the national geothermal energy resource data and information service system will be established by 2015. The geothermal heating area in the country will reach 500 million square meters, the installed geothermal power generation capacity will reach 100,000 kilowatts, and the annual geothermal energy utilization will reach 20 million tons. The formation of geothermal energy resources assessment, development and utilization of technology, key equipment manufacturing, industrial services and other relatively complete industrial system. By 2020, the development and utilization of geothermal energy will reach 50 million tons of standard coal, forming a perfect geothermal energy development and utilization technology and industrial system.

Ground-source heat pump system is a kind of heating, cooling and air-conditioning system that uses solar energy stored in the earth (soil, surface, or underground water body) as a source of heat and cold to convert energy. It consists of a ground heat exchanger system, a heat pump unit, and indoor heating and air conditioning terminals. The system consists of. At present, China’s ground-source heat pump technology has a building application area of ​​over 140 million square meters. During the “Twelfth Five-Year Plan” period, China is expected to complete a ground-source heat pump heating (cooling) area of ​​about 350 million square meters at 200-300 square meters per square meter. Yuan's investment intensity, total investment amounted to 700-1050 billion yuan.

At this stage of development, we will actively promote the development and utilization of shallow geothermal energy. Under the premise of doing a good job in environmental protection, we will promote the use of shallow geothermal energy on a large scale; in areas with suitable resource conditions, we will give priority to the development of reclaimed water source heat pumps, actively develop soil source and surface water source heat pumps, develop groundwater source heat pumps appropriately, and increase shallow ground temperature. The proportion of energy that can be used in urban construction; focus on areas with abundant geothermal energy resources, superior construction utilization conditions, and strong demand for building energy use, promote the use of shallow geothermal energy on a large scale; encourage new buildings or existing buildings in cities and towns with applicable conditions In the energy-saving reconstruction of buildings, the heat pump system shall be promoted synchronously, and the government-invested public welfare buildings and large public buildings shall be encouraged to use the heat pump system preferentially, and the existing energy systems such as coal-fired and oil-fired boilers for heating and cooling shall be encouraged to use heat pump systems or heat pumps. System composite application.

The "China Geothermal Energy Utilization Technologies and Applications" issued by the Ministry of Science and Technology on March 12, 2012 describes the actual situation of geothermal energy utilization in China: China is a major geothermal resource-based country with a medium-low temperature, and the geothermal resource potential in the country is close to the global 8%. With regard to the development and utilization of geothermal resources, with the development of ground source heat pump technology, shallow geothermal energy utilization is currently the main mode of geothermal energy development and application in China. On the whole, China’s geothermal energy utilization has formed a pattern of geothermal power generation, geothermal heating, surface water water source heat pump heating and cooling, seawater source heat pump heating heating, convalescence and tourism, planting and breeding.

As renewable clean energy, geothermal energy will be included in the “Twelfth Five-Year Plan” energy plan. The prospects for the development and utilization of geothermal resources in China are broad. According to preliminary estimates, geothermal energy stored in the main sedimentary basins of the country within 2000 meters from the surface is equivalent to the heat of 250 billion tons of standard coal. At present, there are 103 geothermal fields that have been officially surveyed and approved by the administrative department of land and natural resources reserves. The number of geothermal fields that have been initially evaluated is 214. The annual total amount of geothermal water that can be exploited and utilized in the country is approximately 6.848 billion cubic meters, which is equivalent to the annual heat of 32.847 million tons of standard coal.

Geothermal power is a power generation technology that uses underground hot water and steam as a power source. Its principle is similar to thermal power generation. It uses steam heat energy to convert into mechanical energy in a steam turbine, and then drives a generator to generate electricity. China's use of geothermal power began in the early 1970s. It once built more than 10 geothermal power stations with a total installed capacity of 28,000 kilowatts. However, due to aging of equipment, it is currently reduced to about 24,000 kilowatts, according to the world's geothermal power generation. The 18th place. The total installed capacity directly used by geothermal energy in China reaches 8.889 million kilowatts, and geothermal energy is directly used to reach 7.53*1013 kJ per year, ranking the first in the world. Among them, the ground source heat pump application is about 5.21 million kilowatts, accounting for nearly 60%.

The plan proposes that qualified companies will be encouraged to focus on geothermal energy resource assessment technologies, geothermal power generation technologies, high-efficiency heat exchange (refrigerating) refrigerants, medium-high temperature heat pump compressors, high-performance pipe network materials, tailwater recharge, and water Key technologies such as processing and mineral extraction are jointly tackled. Relying on geothermal energy demonstration projects, the industrialization of geothermal energy utilization key technologies will be accelerated, and a strong industrial support for the development and utilization of geothermal energy in China will be formed.

In the next five years, China will complete the ground source heat pump heating (cooling) area of ​​350 million square meters, and the total market size is expected to be at least 70 billion yuan. Ground source heat pump technology is a renewable energy technology that uses shallow geothermal energy to solve heating and cooling problems. It has three major advantages: First, it can save energy by 50 to 60% compared to other conventional heating technologies. Second, it does not discharge any waste. Third, it can reduce operating costs by 30 to 70%. As a new type of clean energy, geothermal heat is becoming the choice of more and more countries, and China has become the country with the largest heat energy use in the world. Among them, ground source heat pump has been widely used in North America, Europe and China because of its advantages in energy saving and emission reduction. The application of ground source heat pump in China has ranked second in the world, second only to the United States. During the “Twelfth Five-Year Plan” period, the development and utilization of geothermal resources will set off a new round of investment boom. In addition to the further development of the ground source heat pump equipment manufacturing and sales industry, the energy service industry related to geothermal energy utilization will also develop rapidly. Related industries Or will long-term benefit.