The Mobile Architecture and Built Environment Laboratory (MABEL) was called upon to investigate the interior environment of the Deakin Callista office (Geelong) and to perform an occupant survey in February 2005.
A study of a BEFORE and AFTER case where improvements to an open office environment could be made from both an energy and comfort standpoint was of interest to the Australian Greenhouse Office (AGO). At the same time the Bauer Optimising Technology company was in search of a test site to introduce and prove their product under Australian conditions.
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PROJECT OVERVIEW
An important and major part of the project was to measure the energy use and consumption for the newly proposed control system over that of the existing one. Given the circumstance that the Bauer control system, could not be completely implemented because of the central chiller plant serving additional building zones, our findings indicate that tremendous savings are experienced over that of the existing system. The primary savings would be in the total energy costs to produce chilled water for cooling purposes which were found to be on the order of 60% during summer conditions. Further savings are in the variable fan speed drives compared to the existing constant drive fans. Here again, almost 50% savings occurred from the existing system. The other important realisation is that several of the existing air handling units (AHU's), typically used to treat the space, were turned off and not required to maintain conditions during the Bauer controlled periods.
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