Retrofit Success: The 42% Solution From AHUs to new chilled water loop management to lighting and life safety, the upgrades to these two state office buildings were as numerous as they were effective. However, this story is especially notable for the analysis that led to the project decisions — including omitting a couple of innovative options for cost — and the verification that confirmed the payoff. Thus, this handsome Tennessee couple not only save money but also serve as role models.
Interconnection Of Chilled Water Plants What determines chiller plant loading? Do connected plants need to use similar pumping schemes? Is it better to run one chiller in multiple plants or multiple chillers in one plant? Draw on the author’s experience for answers. Then learn how to handle the hydraulics of interconnection and enjoy the byproducts of a well-integrated system.
by Gary R. DaviesP.E.
Overcoming Hot Aisle / Cold Aisle Separation Anxiety Here in the second of two parts, the author is reminded that data center design is no vacation. He does, however, discover that what doesn’t work on the road to Orlando doesn’t work in the data cen-ter, either. What to do? Truly isolating the heat at its origin and backing around to a classic VAV pressure reset strategy eventually yielded a cool solution for everyone not working in the hot aisle.
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