Visual comfort, measured by indoor daylight glare probability (DGP) and horizontal illuminance level at work plane height, was maintained for the entire test period on the MPC side, improving from having visual comfort for 94.5% and 85.7% of the time, respectively, on the BMS side. Vertical sun shades on the exterior are more beneficial on western facades than horizontal shades for this reason, as spaces may. Automatically controlling lights and shades as part of their everyday security routine adds energy-saving and convenience benefits that the customer will use every day, Kleinberg said. Simultaneously, the MPC system improved indoor thermal comfort by maintaining the room within the comfortable range (-0.5 < predicted mean vote < 0.5) for 98.3% of the time, up from 91.8% of the time on the BMS side. Western exposures: Western light is direct in the evenings often causing glare and heat gain issues in the hours before sunset as the lowered sun angle renders many shading strategies inefficient or ineffective. Rather than adding an extra step to a homeowner’s routine, lighting and shades control can integrate with existing habits. Make your building work harder for you by adding intelligent, energy-efficient light and shade control. This wastes energy, creates discomfort, and reduces productivity. The MPC side achieved 15.1–20.7% electricity consumption reduction, as compared to the BMS side. Reducing Glare Reduce glare from windows and lights, as much as possible (using blinds, shades, curtains, etc.) Cover shiny tabletops with light-absorbing. Lighting and Shade Control Most buildings today are over-lit because light levels are set higher than appropriate for the space, or spaces are lit even when they are unoccupied. The MPC system coordinated the control of the ACMV, dynamic façade and automated dimmable lighting systems in one cell while the BMS controlled the building services in the other cell in a conventional manner. A personalized shading control framework is developed to maximize occupant satisfaction while minimizing lighting energy use in daylit offices with automated shading systems. The MPC system was implemented in a test facility having two identical, side-by-side more » experimental cells to facilitate comparison with a building management system (BMS) employing conventional reactive feedback control. This paper presents a method to incorporate personalized visual preferences in real-time optimal daylighting control. A model predictive control (MPC) system that features a multi-objective MPC scheme to enable coordinated control of multiple building services for overall optimized energy efficiency, indoor thermal and visual comfort, as well as a hybrid model for predicting indoor visual comfort and lighting power is proposed. These systems are conventionally controlled individually without considering their interactions, affecting the building’s overall energy inefficiency and occupant comfort. Modern buildings are increasingly automated and often equipped with multiple building services (e.g., air-conditioning and mechanical ventilation (ACMV), dynamic shading, dimmable lighting).
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