COPENHAGEN, Denmark (May 29, 2013) – Opened in 2009, the four-star Crowne Plaza Copenhagen Towers stands 85 meters tall and boasts a shiny black facade. This feature of Denmark’s capital city skyline combines luxury with highly-advanced, eco-friendly pumping technology. The winner of the 2010 EcoTourism Award for the World’s Greenest Hotel, the Crowne Plaza relies on Grundfos Blueflux® technology to work in tandem with the hotel’s demanding heating and cooling system. The resulting combination is exceptionally low energy consumption, according to Jens Nørgaard, application manager for Grundfos Commercial Building Services. To keep energy consumption and CO2 emissions as low as possible, the hotel insisted on the most innovative energy technology throughout the building. One of the world’s most advanced aquifer thermal energy storage (ATES) systems is located underground in the basement of the Crowne Plaza. Cold groundwater is used for cooling the guest rooms during the summer. The heat rejected from this process is reused for heating during the winter. The ATES system delivers cooling and heating for the building’s high-performance HVAC system. This system represents one of Denmark’s first groundwater-based cooling and heating systems. The hotel’s total annual energy consumption is an efficient 51 kilowatt hours per square meter for heating, air conditioning, domestic hot water and ventilation.
- Six end-suction pumps with external frequency converters, which are the primary pumps in the building’s hydronic heating and cooling system
- Four end-suction pumps with internal frequency converters—two dedicated for the chillers’ condenser circuits and two dedicated for the chillers’ evaporator circuits
- One in-line pump with internal frequency converter, which serves as the primary cooling tower circuit and another as the secondary cooling tower circuit