The development of ground source heat pump at home and abroad The history of ground source heat pump can be traced back to a patent in Switzerland in 1912, and the true significance of commercial applications of ground source heat pump only about a dozen years of history. For example, in the United States, there were 14,000 ground-source heat pumps in the country as of 1985, up from 45,000 in 1997 and 400,000 already so far, with steady growth of 10% annually. Ground-source heat pump systems in commercial buildings in the United States accounted for 19% of the total air-conditioning capacity in 1998, of which 30% were new buildings. The United States ground-source heat pump industry has set up by the United States Department of Energy, Environmental Protection Agency, Edison Institute of Power and many ground-source heat pump manufacturers, the United States ground source heat pump Association, the Association in recent years will invest 100 million US dollars in development, research And promotion work. The United States plans to achieve the goal of installing 400,000 ground-source heat pumps per year by 2001, reducing greenhouse gas emissions by 1 million tons, which is equivalent to reducing pollutant emissions by 500,000 vehicles or planting 1 million acres of trees to save energy costs Reaching 420 million U.S. dollars. Since then, the annual cost of energy conservation has been increased by 170 million U.S. dollars. Unlike the development of ground source heat pumps in the United States, Central and Northern Europe such as Sweden, Switzerland, Austria and Germany use mainly shallow geothermal resources and buried underground soil coils (the United States is particularly bullish on the Chinese market, while the U.S. Department of Energy and China In November 1997, the Ministry of Science and Technology signed the Protocol on Cooperation on Energy Efficiency and Renewable Energy between China and the United States, one of which is "Ground Source Heat Pump". The project intends to build one in each of the three cities of Beijing, Hangzhou and Guangzhou in China Ground source heat pump heating air conditioning commercial buildings to promote the use of this "green technology" to ease China's reliance on coal and oil, so as to achieve the purpose of diversifying energy resources. At present, the three ground source heat pump demonstration project is being implemented , And some have entered the implementation phase.At the same time, the Chinese enterprise commissioned by the Ministry of Science and Technology is preparing the introduction of ground-source heat pump technology and equipment in the United States into the Chinese market, which will promote the market-based and industrialized development of ground- And make our research and development of ground-source heat pump as soon as possible to keep up with the international trend.Our country's ground-source heat pump business has started in recent years Step, but also the momentum of development optimistic Tianjin University, Tsinghua University, respectively, with the relevant enterprises to form a joint industry-university-research and development of China's brand of ground source heat pump system has been completed several demonstration projects, more and more Chinese users are familiar with the source Heat pump, and its application has generated a strong interest in China's ground-source heat pump market can be expected to have a bright future.The reason why China's ground-source heat pump market is optimistic about the prospects for the development, on the one hand is to save conventional energy and make full use of renewable On the other hand, our country has a good foundation for heat pump research and application. As early as the 1950s, Professor Lucan Ren of the Thermal Energy Research Institute of Tianjin University launched the earliest research on heat pump in China. In 1965, A water-cooled heat pump air conditioner.Chongqing University of Architecture, Tianjin University of Business and other units buried underground coil heat pump also conducted many years of research.In the Chinese Academy of Sciences, Guangzhou Institute of Energy and other units also held a number of national related Symposium on the Development and Application of Heat Pump Technology. We have reason to believe that by fully studying Based on advanced foreign technologies and operational experience, with the strong support of governments at all levels, China's science and technology sector and the business community work hand in hand. Based on their own strength, they are fully capable of developing land with Chinese characteristics in a relatively short period of time Source heat pump industry.
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