Project to Replace Split-Type Air Conditioners with a Chilled Water System (Chiller Water System) – Building B

The B2 floor of Building B is generally used as a parking area and engineering service rooms; however, some areas are designated as functional rooms equipped with air-conditioning units. Previously, the chilled water piping system from the chiller plant was not installed on this floor, resulting in all air-conditioning units being split-type systems. As the operational areas expanded and additional air-conditioning units were required, extending the chilled water piping to the B2 floor and replacing the split-type units with a chilled water air-conditioning system became a more cost-effective solution and provided greater energy efficiency compared with the split-type system.

Performance Results (March 1 – December 31, 2025)

• Following the installation of chilled water piping and the replacement of split-type air conditioners with a chilled water system, a comparison of electricity consumption before and after implementation showed energy savings of 19,451 kWh.
• The estimated full-year performance is expected to achieve electricity savings of approximately 24,066 kWh per year.