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Optimizing HVAC operation becomes increasingly important because of the rising energy cost and comfort requirements. In this paper, an innovative event-based approach is developed within the Lagrangian relaxation framework to minimize an HVAC's day-ahead energy cost. To solve the HVAC optimization problem based on events is challenging since with time-dependent uncertainties in weather, cooling load,...
With world's increasing energy demand and growing environmental concerns, efficient utilization of energy is critical for sustainable living. Buildings are the major energy consumers, and a set of buildings are connected by distributed energy resources (DERs) such as chillers and boilers in certain building clusters, e.g., a school campus or residential community. Optimized operation of such building...
Sustainable development requires not only the use of sustainable energy resources, but also the efficient use of all energy resources. The latter should be reached by considering the concept of energy as well as exergy - the true magnitude of thermodynamic losses. Exergy describes the quality of an energy flow as the percentage that can be completely transformed into any other form of energy. Reduction...
Building accounts for nearly 40% of global energy consumption, and about 40% of that is consumed by HVAC systems. A typical way of saving HVAC energy cost is to formulate and solve the HVAC operation problem which minimizes the HVAC energy cost in 24 hours ahead. Traditionally, the problem is solved by using time-based approaches where decisions are calculated and executed at each discrete time instant...
With human environmental footprint exceeding the world's regeneration capacity by about 30%, conserving energy and reducing emissions and waste are critical for sustainable living. A new prototype of living is eco-communities which consist of a set of buildings and associated devices for energy generation, conversion, consumption, storage and recovery networks trying to be self-sufficient as much...
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