Laboratory integrates VAV fume hood controls with central building automation system
- Bard, Rao and Athanas Consulting Engineers Inc., Boston, MA (United States)
The new Burke Laboratory (Chemistry Building) at Dartmouth College in Hanover, New Hampshire is a four-story, 80,480 gross ft{sup 2} (7,477 m{sup 2}) teaching and research facility that includes organic, advanced organic and physical chemistry teaching labs, as well as synthetic, physical, biochemistry and NMR research labs. The building also includes support space, lounge areas and faculty offices. All laboratory areas required 100% outside air and all fume hoods have a variable air volume exhaust control system with a tracking supply system. The building contains 87 research hoods and 46 teaching hoods. The laboratories require air flows far in excess of cooling load requirements. The mechanical systems serving this building include: (1) Two steam absorption chillers at 565 tons (1989 kW) each. (2) Two multiple cell cooling towers at 825 tons (2,904 kW) each. (3) A central cogeneration plant distributing steam at 20 psi (138 kPa). The plant has two turbines at 2 MW each and one turbine at 3 MW. (4) Four built-up air handling units at 46,000 cfm (21,707 L/s) each. This article describes how extensive communication between Dartmouth College, the design engineers, the construction manager, and the local utility company culminated in the implementation of systems and equipment with optimized efficiency and cost effectiveness for Dartmouth College. The first-cost premium for all of the implemented energy saving features was approximately $850,000. At average rates of 8 cents/kWh and $15.70/Mlb, annual energy savings are estimated to be approximately $355,000. With a rebate of $479,166, the effective payback for Dartmouth College is one year.
- OSTI ID:
- 51731
- Journal Information:
- ASHRAE Journal, Vol. 37, Issue 3; Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
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