Emerging energy codes require commercial buildings to include built-in plug-load controls that de-energize certain outlets according to occupancy sensors or daily schedules. The authors studied the potential effectiveness of this strategy by monitoring plug-load consumption in several administrative and retail sites maintained by two of the largest retail banks in the United States. The study found that built-in plug-load controls would have minimal effectiveness in most locations, but that significant savings could be achieved using a combination of appropriate device power settings and equipment choices. The proposed approach does require an appropriately engaged tenant, but such tenants might be discouraged from investing in other more effective energy-savings measures because of the requirement to install plug-load controls.
Citation: ASHRAE/IBPSA-USA Bldg Simulation Conf, Sept 2020
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