A recent study from the U.S. General Services Administration showed the benefits of using a chiller with Danfoss Turbocor green HVAC technology.

The GSA swapped one of two 150-ton rotary screw chillers at the George Howard Jr. Federal Building and courthouse in Pine Bluff, Ark., with a 150-ton chiller using two magnetic levitation technologies from Danfoss Turbocor. The Pacific Northwest National Laboratory of the chillers for six months to report on potential energy savings offered by the green HVAC market technology.

The lab said the variable-speed, oil-free centrifugal compressor used 42 percent less energy.  The variable-speed drive allows the chiller to work better with lower and partial cooling loads, the study said.

“For more than 20 years and with heavy investment in research and development, Danfoss Turbocor has been engineering and advancing the variable speed, oil-free, magnetic bearing compressors that today are helping to improve chiller efficiency and make possible significant reductions in energy use, ” said Danfoss Turbocor President and CEO Ricardo Schneider. “GSA’s report recognizes the opportunity for improvement in the ever-increasing energy use of commercial buildings, and we’re confident that the part-load performance and potential for lower maintenance costs of Danfoss Turbocor compressors will only continue to make them an attractive option for equipment OEMs (original equipment manufacturers) and building owners nationwide.”