مقاله Multi-objective optimal control of an air-to-water heat pump for residential heating : تی پی بین

خلاصه مقاله

The current study investigates the optimal operation of an air-to-water heat pump system. To this end, the control problem is formulated as a classic optimal control or dynamic optimization problem. As conflicting objectives arise, namely, minimizing energy cost while maximizing thermal comfort, the optimization problem is tackled from a multi-objective optimization perspective. The adopted system model incorporates the building dynamics and the heat pump characteristics. Because of the state-dependency of the coefficient of performance (COP), the optimal control problem (OCP) is nonlinear. If the COP is approximated by a constant value, the OCP becomes convex, which is easier to solve. The current study investigates how this approximation affects the control performance. The optimal control problems are solved using the freely available Automatic ControlAnd Dynamic Optimization toolkit ACADO. It is found that the lower the weighting factor for thermal discomfort is, the higher the discrepancy is between the nonlinear and convex OCP formulations. For a weighting factor resulting in a quadratic mean difference of 0.5°C between the zone temperature and its reference temperature, the difference in electricity cost amounts to 4% for a first scenario with fixed electricity price, and up to 6% for a second scenario with a day and night variation in electricity price.

نویسندگان

Clara Verhelst [ Department of Mechanical Engineering, Katholieke Universiteit Leuven, Celestijnenlaan 300a, 3001, Heverlee, Belgium ]

David Degrauwe [ Department of Mechanical Engineering, Katholieke Universiteit Leuven, Celestijnenlaan 300a, 3001, Heverlee, Belgium ]

Filip Logist [ Department of Chemical Engineering, Katholieke Universiteit Leuven, W. de Croylaan 46, 3001, Heverlee, Belgium ]

Jan Van Impe [ Department of Chemical Engineering, Katholieke Universiteit Leuven, W. de Croylaan 46, 3001, Heverlee, Belgium ]

Lieve Helsen [ . Department of Mechanical Engineering, Katholieke Universiteit Leuven, Celestijnenlaan 300a, 3001, Heverlee, Belgium ]

کلمات کلیدی

heat pump floor heating multi objective optimal control

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مجموعه مقالات Building Simulation

Building Simulation: An International Journal publishes original, high quality, peer-reviewed research papers and review articles dealing with modeling and simulation of buildings including their systems. The goal is to promote the field of building science and technology to such a level that modeling will eventually be used in every aspect of building construction as a routine instead of an exception. Of particular interest are papers that reflect recent developments and applications of modeling tools and their impact on advances of building science and technology. Paper submission is solicited for the following five fixed sections: Building thermal, lighting, and acoustics modeling, Building systems and components, Indoor/outdoor airflow and air quality, Architecture and human behavior, Advances in modeling and simulation tools.

حوزه های تحت پوشش : Building thermal, lighting, and acoustics modeling, Building systems and components, Indoor/outdoor airflow and air quality