Utilization of Waste Heat from Mine Water Using a High-Temperature Heat Pump
Brief Project Description
The project involved the placement and design of a high-temperature heat pump plant for utilizing waste heat from pumped mine water in an industrial complex.
The purpose of the investment was to upgrade the low-temperature energy potential of mine water to a usable temperature level for ventilation air heating and domestic hot water preparation. Acting as lead designers, we prepared mechanical, electrical, and civil engineering designs.
Challenge
The key challenge was the efficient and reliable use of mine water, which is pumped intermittently and does not provide a constant flow. Despite this, the system had to enable continuous operation of heat pumps with capacities exceeding 1 MW and provide heating water outlet temperatures of up to 70 °C.
Additional complexity arose from high industrial technical standards, requirements for high operational reliability and safety (A2L refrigerant), and the need for precise hydraulic separation of individual systems with the possibility of future expansion.
Solution and Benefits
An advanced system with two high-temperature water-to-water heat pumps was designed, hydraulically connected in series to enable optimal operation under variable conditions. A key element of the solution is a mine water storage basin that provides sufficient accumulation and a stable heat source even during pumping interruptions.
The system is divided into a production and a consumption heating loop, allowing energy optimization, safe operation, and easy future connection to district heating. The result is a sustainable, energy-efficient solution that significantly reduces fossil fuel use, lowers operating costs, and represents a strong example of integrated project management for complex industrial energy projects.
Have a Question?
Call us or send us a message and we will get back to you.
Have a Question?
Call us or send us a message and we will get back to you.
Follow us on 