At the 2024 International Zero Carbon City, Countryside and Zero Carbon Building Conference and Technology Equipment Expo, the "Geothermal+" integrated smart energy system of CCTEG Xi'an Research Institute became the highlight of the exhibition and attracted much attention. In the special report of CCTV4 "China News" on the exhibition, the "Geothermal+" integrated smart energy system was prominently featured.
"Geothermal+" integrated smart energy system
"Geothermal+" integrated smart energy system is a comprehensive energy supply technology integration that integrates geothermal energy with multiple clean energy sources such as solar thermal energy/photovoltaic energy/air energy/energy storage, which has been gradually formed by CCTEG Xi'an Research Institute in the theoretical research and innovative practice of geothermal energy development and utilization. It realizes heating, cooling, and green electricity supply, and provides customers with green, low-carbon, intelligent, and economical integrated energy supply solutions. After years of technological research and development and iterative upgrades, it has become the main direction of geothermal energy development and application.
Shallow geothermal heating and cooling technology
The shallow geothermal heating and cooling technology of CCTEG Xi'an Research Institute has effectively avoided cold accumulation in the ground source heat pump system by studying and analyzing hydrogeological conditions, scientifically arranging heat exchange well groups, and developing operation and management platforms. The unconventional ground source heat pump geothermal well testing equipment developed can be used for testing and research on unconventional ground source heat pump heat exchange wells with large diameters and ultra-deep wells, and has been successfully applied in Shaanxi, Shandong, Anhui and other places.
Medium-deep geothermal buried pipe heating and cooling technology
CCTEG Xi'an Research Institute's Medium-deep geothermal buried pipe heating and cooling technology has achieved 100% heat extraction without water extraction, setting a record for the deepest geothermal well, the highest bottom hole temperature, and the largest single-well heat exchange capacity of the same type of geothermal well in China at that time. It has made continuous breakthroughs in technologies such as high thermal conductivity cement, high-efficiency thermal insulation inner pipe, installation and protection of optical cables in high-temperature and high-pressure directional wells, and cascade utilization of geothermal energy, and its thermal conductivity, heat extraction power, comprehensive heating energy efficiency, and single-well heating area have all been greatly improved. This technology has been demonstrated and promoted in Shaanxi, Inner Mongolia and other places.
In recent years, CCTEG Xi'an Research Institute has continued to focus on the green and low-carbon transformation of energy, giving full play to its unique advantages in the development and utilization of shallow, medium and deep geothermal energy and "geothermal+" comprehensive energy applications, and guided by customer needs, it has systematically integrated waste heat utilization, photovoltaic thermal energy and other technologies, and simultaneously explored solutions to problems such as mine heat damage prevention and control, deep mining and other high-temperature heat damage, continuously accelerated the incubation and transformation of scientific and technological achievements, iteratively upgraded the "geothermal+" comprehensive energy system, and continued to contribute to the country's carbon peaking and neutrality goals.
