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A new government study has found that auxiliary equipment in commercial-building HVAC systems uses much more energy than previously thought. The Department of Energy (DOE) report conservatively estimates that auxiliary fans and pumps use 1.5 quadrillion Btu (quads) nationwideâabout 10% of all energy used in the commercial sector. This equipment has been largely overlooked in energy-efficiency research, development deployment (RDD) programs, which have mainly focused on improving the efficiency of primary heating and cooling equipment such as chillers, refrigerant compressors, boilers and furnaces.¹ Furthermore, auxiliary energy consumption most likely is increasing, even as primary equipment is showing vast improvements in efficiency.

Citation: ASHRAE Journal, vol. 43, no. 2, February 2001

Product Details

Published: 2001 Number of Pages: 1File Size: 1 file , 1.3 MB Product Code(s): D-6008