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Development of By-Pass Blending Station System
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A new building blending station system named by-pass blending station (BBS) has been developed to reduce building pump energy consumption in both district heating and cooling systems. Theoretical investigation demonstrated that the BBS can significantly reduce building pump power for a typical cooling system when constant water flow is maintained in the building side. When differential pressure reset is applied in the building side, more pump energy can be saved. The BBS also reduces the pump size and therefore results in lower initial system cost. A case study was also performed and demonstrated 42% of annual chilled water pump energy savings for constant building water flow, and 82% of annual chilled water pump savings for differential pressure resetting at Omaha, Nebraska.
Liu, M.; Barnes, D.; Bunz, K.; Rosenberry, N. (2003). Development of By-Pass Blending Station System. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from