Sustainable development has become a hot topic nowadays. As one of the three elements of sustainable development, environmental factors have drawn all kinds of attention. Sustainable development means safeguarding, rationalizing and improving the natural resource base, which means incorporating environmental concerns and considerations into development plans and policies. The city produces a large amount of sewage every day, and huge amounts of heat are stored in urban sewage. It has been recognized as one of the clean energy sources that can be recycled and utilized. Especially in recent years sewage source heat pump technology is maturing. Recycling heat from urban sewage using a sewage source heat pump system has not only developed a clean energy source but also reduced emissions from urban waste heat and protected the environment. The "Guorui Garden" in Shanxi adopts the original sewage source heat pump system independently developed by Beijing Ruiboli Thermal Energy Technology Co., Ltd. The project started construction in August 2005 with a total construction area of ​​150,000 square meters. One of the project, "Guorui Building", with a total construction area of ​​31338 m2, has been completed and put into use; Phase II "Guorui Garden" commercial residential buildings, with a total construction area of ​​66945 m2, the main structure has been capped in July 2007, Completed by the end of the year. The site of "Guorui Garden" project is located directly at the main culvert of the urban sewage in Pingyang Road, Taiyuan City. The culvert is 28m from the basement side wall on the east side of the project. The square culvert with the cross-sectional area of ​​2m * 2m Discharge of 120,000 tons, that is, the average flow rate of 5000t / h, the average annual water temperature of 16 ~ 18 ℃, Guoruiyuan sewage water source heat pump system, which is a steady flow, high grade (temperature) of the ideal water source . In actual construction, we lead the sewage to the sewage source heat pump room through a branch with a diameter of 900mm. This branch pipe can guarantee an average flow rate of 5000t / h and a heating area of ​​230,000 m2. Has successfully solved the cooling and heating problems of 100,000 m2 of buildings, the remaining 130,000 m2 heat source has been fully booked, of which 80,000 m2 main building has been completed and can be put into operation next year. Energy-saving emission reduction significantly "Guorui Court" project after a year of practice, with its stable performance, good heating and cooling effects, low operating costs, and achieved good economic, social and environmental benefits. Significant energy-saving benefits: low operating costs of the technology, the summer cooling temperature up to 18-26 ℃, winter heating up to 20-26 ℃, and the original sewage heat pump can be automatically adjusted according to indoor and outdoor temperature, operating costs more than gas, 2 times lower fuel costs, operating costs lower than the current urban district heating and district heating prices. Environmental decontamination pollution: In addition to consumption of electricity, do not consume any non-renewable energy sources, such as coal, gas, oil, will not have a city heat island effect. 150,000 square meters of cooling, heating, hot water for life, the annual savings of 10,000 tons of standard coal, 300 tons of sulfur dioxide emissions, 22 million cubic meters of smoke, particulate matter 6,400 tons, 2,700 tons of row of slag per year, 600 tons of waste water , To avoid the noise of traditional operating equipment and smoke pollution. Water-saving land: surface water and soil as a source of heat and heat, to its release of heat or absorb heat, do not consume water resources, will not cause pollution; omitted the boiler room and ancillary coal, oil storage, cooling Towers and other facilities, both to save space for construction, but also conducive to the appearance of the building. A multi-purpose machine: sewage source heat pump system for cooling, heating, but also for the real hot water, a multi-purpose machine. Not only saves a lot of energy, but also with a set of equipment to meet both heating and cooling requirements, reducing the initial investment of equipment. The total investment is only 60% to 80% of the traditional air-conditioning system, and the host small size, short construction period. Wide range of applications: Sewage source heat pump technology can make extensive use of rivers and lakes and other natural water flow, but also the use of groundwater, urban sewage, industrial circulating water and other unnatural water as a medium, but do not have water sources can use ground-source heat pump technology, land Buried pipe for energy exchange. Therefore, both significant social and economic benefits, but also for the benefit of people's lives and improve the quality of the environment. Stable and reliable operation: the water temperature is relatively stable throughout the year, the scope of its fluctuation is far less than the air changes, the water temperature is more constant characteristics, making the sewage source heat pump operation more reliable and stable, but also to ensure system efficiency and Economy; sewage source heat pump host computer-controlled, high degree of automation. As the system is simple, less crew components, stable operation, low maintenance costs and long service life.
