The Comprehensive Energy Application Project Undertaken by CCTEG Xi'an Research Institute for Shaanxi Fast Group Is Officially Put into Operation

Recently, the official commissioning ceremony and on-site promotion meeting of the Shaanxi Fast Group Comprehensive Energy Application Project were held in Xi'an. Invested in and implemented by CCTEG Xi'an Research Institute, the project is the first geothermal energy comprehensive utilization project in the Guanzhong area to feature "deep-shallow coupling and cascade utilization" in 2025. It has successfully built a green, high-efficiency comprehensive energy system that not only meets the summer cooling, winter heating, and year-round steam demands of Fast Group’s western suburbs factory area, but also sets a new benchmark in energy conservation and carbon reduction.

The project is located at No. 76 Zaoyuan South Road, Lianhu District, Xi’an City, with a total heating area of 38,662 m². It adopts a coupled system of "shallow geothermal heat pumps + deep geothermal ground heat exchangers" to replace the factory area's existing heating system and the heating and cooling systems of newly built buildings. Meanwhile, it is integrated with steam generators to supply steam for production.

The project has a total heating load of 3,000 kW and a total cooling load of 1,900 kW. The cooling system is designed with a supply-return water temperature of 7℃/12℃, while the heating system is designed with a supply-return water temperature of 55℃/45℃. The total steam supply capacity is not less than 2.0 t/h, with a steam pressure of at least 0.3 MPa. There are two steam stations (eastern and western), each with a minimum steam supply capacity of 1.0 t/h.

The project employs a configuration of "1 deep geothermal well exceeding 4,000 meters in depth + 280 shallow geothermal wells", which is referred to as the "deep-shallow coupling and cascade utilization" model. (Notes: "Deep-shallow coupling": Deep geothermal energy provides a stable high-temperature heat source, while shallow geothermal energy is responsible for low-temperature circulation, achieving graded heat extraction and optimal utilization of resources. "Cascade utilization": Thermal energy is prioritized for process steam, which has the highest demand; the waste heat is then sequentially used for heating and cooling, realizing "one energy source for multiple purposes". The overall energy efficiency is far superior to that of traditional systems.)