Shaanxi region is an important coal production area in China, and the recycling and utilization of waste heat resources from coal mine exhaust has become an important task to promote green development. Through innovative methods of waste heat recovery and utilization, not only can resources be effectively utilized, but also contribute to energy conservation and emission reduction, and improve energy utilization efficiency. The following will share some successful cases of waste heat recovery and utilization in Shaanxi region.

Waste heat recovery and heating from exhaust air: In a large coal mine in Shaanxi Province, the use of waste heat recovery and heating from exhaust air has achieved good results. The coal mine sets up heat exchange equipment at the wellhead to transfer the waste heat of exhaust air to the working medium, and then upgrades the low-temperature waste heat of exhaust air to high-temperature heat energy through heat pump technology, which is supplied to the heating equipment in the mine. This system not only reduces energy costs, but also improves the working environment of miners and improves work efficiency.

Waste heat recovery and power generation from exhaust air: In a certain mine in Shaanxi, the use of waste heat recovery and power generation from exhaust air has achieved dual energy utilization. By transferring the waste heat of the exhaust air to the working medium, steam is generated to drive a generator for power generation, providing power to the mine. This not only meets the internal power demand of the mine, but also provides power to the surrounding areas and provides local power support.

Air source heat pump refrigeration: In another mine in Shaanxi, air source heat pump refrigeration is used to provide summer cooling needs. By controlling the air inlet temperature of the mine and adjusting the underground temperature, a cool working environment is provided for miners. This cooling method not only meets the internal needs of the mine, but also reduces the burden on the power system, with good energy-saving effects.

There are various methods for the recovery and utilization of exhaust heat in Shaanxi region, and their applications in heating, power generation, refrigeration, and other fields have achieved resource sharing and efficient utilization. These cases have not only achieved success in improving energy utilization efficiency and reducing costs, but also provided strong support for green development in Shaanxi region, showcasing the broad prospects of waste heat recovery and utilization. I believe that in the future, with the continuous progress of technology and further support from policies, the recovery and utilization of waste air heat will achieve greater development in Shaanxi region.