Ground-source heat pump history can be traced back to a patent in Switzerland in 1912, and the true significance of commercial applications of ground-source heat pump only 10 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, medium and northern European countries such as Sweden, Switzerland, Austria and Germany use mainly shallow geothermal resources and buried underground soil coils (the reason why the depth of ground-source heat pump market in China is foreground On the other hand, our country has a good foundation for heat pump research and application. As early as the 1950s, Lu Tsan-jen, Research Institute of Thermal Energy, Tianjin University, Professor started the earliest study of heat pump in China, successfully developed the first domestic water-cooled heat pump air conditioner in 1965. Chongqing University of Architecture, Tianjin Business School and other units on the ground buried coil ground source heat pump also conducted years of research. Guangzhou Institute of Energy, Chinese Academy of Sciences and other units also held a number of national seminars on the development and application of heat pump technology.We have reason to believe that, on the basis of fully learning from advanced foreign technology and operational experience, at all levels of government Strongly supported, China's science and technology sector and business community work together, relying on their own power is fully capable Open up a ground source heat pump industry with Chinese characteristics in a short period of time.
Differential Pressure Level Gauge
Differential Pressure Gauge
CYW-152E and CYW-153B stainless steel pressure gauge (hereinafter referred to as instrument) is applicable to measure the differential pressure, flow of various fluids(gases) in the industrial processes among the industrial sectors including the chemical, chemical fiber, metallurgy, power and nuclear power industry.
Differential Pressure Level Gauge,Differential Pressure Water Level Gauge,Differential Erential Pressure Water-Level Gauge,Digital Differential Pressure Gauge
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