Geothermal Utilization System - February 2004

Geothermal Utilization System - February 2004

The geothermal utilization system is a highly energy-efficient technology that uses the stable temperature of the ground to provide heating, cooling, and freeze prevention. This system is particularly effective in cold regions or areas with significant temperature fluctuations. The "BHES" (Borehole Heat Exchanger System) developed by Misawa Environmental Technology involves installing heat exchange pipes about 100 meters underground to utilize geothermal heat for heating and cooling buildings and infrastructure.

This system has been implemented in over 40 locations across Japan, including public facilities in Sapporo City, Hokkaido, particularly Sapporo Dome, and commercial facilities in Hirosaki City, Aomori Prefecture. In Sapporo, the BHES system is used to prevent road freezing, helping to reduce winter snow and ice buildup on roads and sidewalks. This has led to a 30% reduction in snow removal costs annually. Additionally, the system has reduced CO2 emissions by about 25% annually, which has been recognized as a significant achievement in lowering the environmental impact by local governments.

Compared to traditional fossil fuel-based heating and cooling systems, this technology achieves significant cost savings. A commercial facility in Aomori Prefecture has reduced its annual energy consumption by approximately 15%, saving around 3 million yen in operating costs. The system can be customized according to regional geological conditions, and its installation is spreading nationwide.

In the future, the wider adoption of geothermal utilization systems is expected. Major energy companies like Tokyo Electric Power are also considering implementing these systems in urban areas. This technology is drawing attention not only for reducing energy costs but also for significantly reducing greenhouse gas emissions.