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Commissioning of A Large Office Building in Texas - A Case Study
Abstract
This case study involves commissioning of a
large office building in the hot and humid climate of
south Texas. The commissioning involved the
installation of a VFD (Variable Frequency Drive) on
a chilled water pump, improved EMCS (Energy
Management Control System) programming and
operation, and the installation of automatic chiller
isolation valves, in addition to calibration and repair
of building VAV (Variable Air Volume) boxes. In
the case study building, four air-cooled chillers and
two chilled water pumps were installed on the roof of
a six-story, 141,514 ft^2 office building with very
limited EMCS control. Some of the built-in chiller
features such as staging and flow switch protection
were unreliable due to age. Serious problems existed
with humidity control, operation efficiency, and
equipment protection in the building.
By utilizing the existing EMCS as part of the
Continuous Commissioning measures, several
operational problems have been solved, and
significant savings have been achieved. This paper
discusses our procedures in identifying and solving
moisture problems, the importance of cooling
production and building load management, and the
effectiveness and convenience of EMCS control.
Citation
Deng, S.; Turner, W. D.; Liu, M. (2000). Commissioning of A Large Office Building in Texas - A Case Study. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /6785.