New, renewable energy sources
Research in field-applicable geothermal and solar energy technologies
New energy sources include fuel-cell, hydrogen, liquefied coal gas and renewable energy sources include solar photovoltaic, solar energy, tidal, geothermal, micro-hydroelectric, waste, and biomass. With climate change and depletion of fossil fuels becoming mainstream issues, interest in these energy sources is growing dramatically.
The use of geothermal sources that take advantage of underground heat exchangers and solar photovoltaic modules that convert sunlight into electric power are relatively easy to apply to building construction so we are focusing on these two technologies.
For example, we installed the building integrated photovoltaic (BIPV) modules in the collective energy facilities in Busan’s Southeastern Logistic Center. In the underground cultural facilities in Wonju Health Culture Center, we installed a vertical, closed loop-type geothermal system. A distributed geothermal system was installed in the Lotte Mall at Gimpo Airport.



- Integrated geothermal center
- Retail outlet
- Shopping mall
- Hotel
- Office building
- Long-depth vertical closed loop type
- Vertical closed loop type
- Single well type
- Multiple well type
Geothermal heat exchanger technology based on reinforced concrete
This technology calls for the laying of geothermal pipes in the foundation and retaining walls so that heat from 15 meters underground can warm the building.
We installed the pipes on an experimental basis and found the system had a 60% higher efficiency than conventional geothermal technology.

- 01. Additional installation of vertical closed loop-type geothermal pipes
- 02. Bentonite grouting
- 03. Bentonite grouting
- 04. Completes installation of heat exchanger

- 01. Connects a geothermal heat exchanger on rebars
- 02. Inserts slurry walls
- 03. Concrete pouring
- 04. Completes installation of slurry walls