The official website of Shanghai Songjiang Vibration Absorber Group Co., Ltd. introduces the information regarding the rubber expansion bellows contract for the Qiaonan District Central Heating Project in Tianshui City. Songjiang Group provides high-temperature resistant rubber expansion bellows for numerous thermal projects with a warranty of 3 years.
Tianshui, a prefecture-level city under the jurisdiction of Gansu Province, is located in the southeastern part of Gansu Province, adjacent to the Guanzhong Plain. It is an important node city in the Guanzhong-Tianshui Economic Zone. Tianshui, formerly known as Shanggui, Chengji, and Qinzhou, is reputed as one of the important birthplaces of Chinese civilization, where it is said that Fuxi and Nuwa were born, earning it the title of “Hometown of Emperor Xi.” Tianshui City administers 2 districts and 5 counties, with a total area of 14,325 square kilometers and a total population of 3.829 million, including 3.3549 million permanent residents (in 2018).
Tianshui’s terrain is high in the northwest and low in the southeast, with elevations ranging from 1000 to 2100 meters, and it has a temperate monsoon climate. Tianshui is a famous historical and cultural city in China, an excellent tourist city, and one of China’s old industrial bases. It has 44 national and provincial enterprise technology centers, engineering technology research centers, 1 national enterprise key laboratory, and 6 provincial enterprise key laboratories. It is home to institutions of higher education such as Tianshui Normal University, Gansu Forestry Vocational and Technical College, Gansu Industry Vocational and Technical College, and Gansu Mechanical and Electrical Vocational and Technical College. In 2018, Tianshui achieved a GDP of 65.205 billion yuan, general public budget revenue of 4.663 billion yuan, and total retail sales of social consumer goods of 26.981 billion yuan.
With a long history, Tianshui is the birthplace of the Qin people and early Qin culture, with over 3000 years of recorded history and over 2700 years of city-building history. In 688 BC, the Qin State established the counties of Guixian and Jixian here, making it one of the earliest places in Chinese history to establish counties and build cities. There are 169 national, provincial, and municipal key protected cultural relics in Tianshui, among which the Maijishan Grottoes, a UNESCO World Heritage Site, are one of China’s four major grottoes, renowned as the “Eastern Sculpture Art Gallery.”
Introduction to Central Heating:
Central heating refers to the method of supplying heat to a city (town) or a part of a region for production, heating, and living needs through a pipe network using steam or hot water generated by a central heat source. Central heating is one of the basic infrastructures of modern cities and an important facility for urban public utilities.
Central heating not only provides cities with stable and reliable high-quality heat sources, improving people’s living standards, but also saves energy, reduces urban pollution, contributes to urban beautification, and effectively utilizes urban space. Therefore, central heating has significant economic and social benefits.
Central heating is an important infrastructure for building modern cities. It not only provides cities with stable and reliable high-quality heat sources, improving living environment conditions, but also saves energy, reduces energy consumption, reduces urban pollution, and protects the ecological environment.
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The central heating system consists of three parts: heat source, heating pipeline network, and heat users. The central heating heat source includes cogeneration power plants, centralized boiler rooms, industrial and other waste heat, geothermal, nuclear energy, solar energy, heat pumps, etc., and can also be a multi-heat source combined heating system composed of several heat sources. The distribution of heat sources should be as centralized and reasonable as possible, and heat source equipment should be selected with high parameters, large capacity, and high efficiency. The location of the heat source should be placed in the center of the heat load, and determined through technical and economic comparisons based on factors such as fuel transportation, thermal power pipeline network and transmission lines, water sources, ash removal, topography, geology, hydrology, environmental protection, and comprehensive utilization. The facilities of central heating heat source, heat pipeline network, and heat users should be planned, arranged, and constructed in a unified manner, synchronized, to realize the economic and social benefits of central heating as early as possible.
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