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Title

INTEGRATION OF DAYLIGHT IN THE COMMERCIALLY USED BUILDINGS FOR ENERGY SAVING PURPOSES

Creator

Tabibzadeh, Meysam

Date

2014, 2014-07

Description

The integration between different building systems’ operation in response to various room and weather conditions has a direct positive effect...
Show moreThe integration between different building systems’ operation in response to various room and weather conditions has a direct positive effect on buildings energy performance and cost effectiveness. A Building Automation System (BAS) or an integrated Building Energy Management System (BEMS) typically control five major building systems, including people occupancy detection, shading control, HVAC, and lighting systems. Other building systems and internal energy loads also need to be considered when developing integrated controls and energy efficiency in office buildings. The controls are designed to operate in different building zones (lighting and thermal), while communicating with the main building management system. Whether the zone is being occupied or not will define further actions by other control components. The main goal of this research is to improve energy performance in commercial office buildings by developing the integration between various building controls and the use of natural light indoors and outside views while maintaining both the occupants’ visual and thermal comfort and high building energy performance at the same time. In this research, the proposed synchronization between building occupancy, daylighting, and integrated controls for various building systems in a commercial office space was assessed using computer simulations. The study uses Microsoft Excel as the primary database and result compiling platform. The work flow algorithm of the integrated control (in Visual Basic Application for Excel) automatically defines the new simulation criteria, makes adjustments in the simulation inputs, and runs DOE2.2 energy simulations for the proposed models with integrated controls as well as the baseline model (compliant with the ASHRAE 90.1-2010 standard) for further analysis. The simulations are conducted for eight simulation dates over five years. The results from the proposed model are analyzed and compared with the baseline results in order to evaluate its energy performance and to determine possible savings. The simulation results analysis determines how the implementation of the proposed system can improve the daylighting and energy performance in the building by maximizing the integration between different building systems controls in response to different parameters, such as occupancy, weather conditions, and daylight. The evaluated results of the proposed system are summarized as the system and sub-system algorithms, features, and components of each system, and, finally, as the design guidelines for implementation of the new fully integrated controls for commercial office buildings. From the evaluation of the proposed system performance, the list of research outcomes and deliverables will be concluded, by determining the impact of integrated controls on the overall energy performance of the office work space. The fact that if and when the energy efficiency and improved comfort and environmental quality work hand in hand, in addition to and the role of integrated occupancy in improving the energy efficiency will define the level of success for the proposed control system. The final research outcome is the development of the integrated workflow that can be used in new Building Automation Systems (BAS) or incorporated into the simulation engine for “Simulation Assisted” (see section 2.2.2) Building Energy Management Systems (BEMS).
Ph.D. in Architecture, July 2014
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