Prospection, Evaluation, Development and Utilization of Geothermal Resources

Relying on industrial advantages such as resource exploration, hydrogeology, drilling technology, and drilling equipment manufacturing, we will research geothermal energy development and utilization technologies. It has carried out technological innovations in areas such as ground source heat pumps, medium and deep geothermal energy, and the development and utilization of mine geothermal resources, and has strong technical strength. We has presided over and participated in the preparation of several technical specifications related to the development and utilization of geothermal energy. The projects he built have won the honorary title of Clean Heating Demonstration Project from the National Energy Administration, Shaanxi Province, and Xi'an City, constantly promoting scientific and technological progress in the industry. We are committed to providing customers with survey, design, construction, and general contracting services for ground source heat pumps, medium and deep geothermal, comprehensive utilization of mine waste heat, and "geothermal +" projects. Provide solutions for heating, cooling, and hot water combined supply systems, and provide services such as investment, construction, management, and operation of distributed energy systems.

1. Development and utilization of shallow geothermal energy

Shallow geothermal energy utilization technology (ground source heat pump) arranges horizontal or vertical buried pipes in a shallow relatively constant temperature layer 200m above the earth's surface to establish a closed water circulation system in the well. Through the underground pipes, the "relative constant temperature layer" is used to achieve "Winter Heating, Summer Cooling.

The intelligent drilling equipment and coal seam development industrial base project has a total construction area of 96,082 square meters for heating, heating and cooling. It adopts a ground source heat pump system with heavy vertical buried pipes. It has designed 1,420 heavy direct heat exchange wells. The effective buried pipe well depth is 150m, and the drilling diameter is greater than 150mm. The pipe is a vertical PE-D32 double U-shaped buried pipe, with a cooling load of 13488kW in summer and a heating load of 9354kW in winter, achieving heating in winter and cooling in summer.

Ground Source Heat Pump System Principle

Project Renderings

Ground Source Heat Pump Heat Exchange Well Construction

Ground Source Pump Heat Exchanger Assembly

Ground Source Heat Pump Energy Station System

Ground Source Heat Pump Heating and Cooling Terminal System

Energy Station Appearance

Computer Room System

2. Development and utilization of medium and deep geothermal energy

Medium-deep coaxial casing underground pipe heat exchange technology. After the well is completed, an outer casing is installed and sealed using a cementing process. An insulating inner pipe is installed in the center of the outer casing to establish an in-well water circulation system to achieve "only heat exchange, no water extraction" "The mining method is universal, occupies a small space, and is not restricted by groundwater resource conditions.

2.1 Heat exchange type

The sleeve-type heat exchange structure is adopted to realize the mining method of "only taking heat, not water".

2.2 Hydrothermal type

the same underground aquifer to establish an open water circulation system to achieve a "combined production and irrigation" mining method.

2.3 Demonstration Project

The total heating area of the geothermal heating demonstration project in the high-tech campus is 54,598 square meters. Designed 3 3500m medium-deep geothermal wells, 1 vertical well, and 2 cluster directional wells. The system is based on a casing-type well heat exchange structure to achieve a 100% "heat only, not water" mining method. The system heating energy efficiency is COP6.0 or above.

Medium and Deep Geothermal Energy Intelligent Management and Control Platform

Construction of Medium-Deep Coaxial Casing Geothermal Wells

Medium and Deep Geothermal Heating Energy Station

Computer Room System

Independent Research and Development of New Heat Insulated Pipes

3. Mine geothermal development and utilization

3.1 Mine waste heat utilization

1) Mechanical waste heat utilization

Low cost, high efficiency, convenient and simple installation, saving space

2) Mine drainage waste heat

The treated mine water inflow transfers its heat energy to the user side through the water source heat pump unit. The system is simple and has high overall energy efficiency.

3) Mine exhaust air and waste heat

Heat pipe direct heat exchange technology has high thermal conductivity, excellent isothermal properties, heat flow density variability, reversibility of heat flow direction, thermal diode and thermal switch performance, and constant temperature characteristics (controllable heat pipe).

The direct steam exhaust air waste heat utilization technology has the advantages of small heat loss, a simple system, and high energy efficiency.

The direct cooling exhaust air waste heat utilization technology has the advantages of high heat extraction, no restrictions on site, height difference, etc., modular design, and simple construction and installation.

3.2 Prevention and control of thermal damage in high-temperature mines and utilization of heat resources

The combination of a dehumidification wheel and a heat pump forms a new type of efficient mine heat damage prevention and heat resource utilization system, which has better dehumidification and cooling effects and higher energy efficiency than conventional mechanical refrigeration systems.