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A platform for research: civil engineering, architecture and urbanism
Calculation of optimal thermal load of intermittently heated buildings
AbstractA building is permanently in thermodynamic non-equilibrium due to changing weather, free gains and indoor temperature set-point. Load calculation in dynamic conditions is an essential goal of building energy simulation. This paper demonstrates that the load calculation is a control problem. Supposing that the thermal model of the building is linear and that the model of the building, the weather conditions and occupational program are known in the design stage, the paper proposes an unconstrained optimal control algorithm which uses feed-forward to compensate the weather conditions and model predictive programming (MPP) for set-point tracking. MPP is obtained by modifying the dynamic matrix control (DMC), a variant of model predictive control (MPC).The peak load depends on the set-back time of the indoor temperature: smaller the set-back time, larger the peak load, but smaller energy consumption. Then, the choice of the weighting coefficients in the model predictive programming may be done on economical considerations.
Calculation of optimal thermal load of intermittently heated buildings
AbstractA building is permanently in thermodynamic non-equilibrium due to changing weather, free gains and indoor temperature set-point. Load calculation in dynamic conditions is an essential goal of building energy simulation. This paper demonstrates that the load calculation is a control problem. Supposing that the thermal model of the building is linear and that the model of the building, the weather conditions and occupational program are known in the design stage, the paper proposes an unconstrained optimal control algorithm which uses feed-forward to compensate the weather conditions and model predictive programming (MPP) for set-point tracking. MPP is obtained by modifying the dynamic matrix control (DMC), a variant of model predictive control (MPC).The peak load depends on the set-back time of the indoor temperature: smaller the set-back time, larger the peak load, but smaller energy consumption. Then, the choice of the weighting coefficients in the model predictive programming may be done on economical considerations.
Calculation of optimal thermal load of intermittently heated buildings
Ghiaus, Christian (author) / Hazyuk, Ion (author)
Energy and Buildings ; 42 ; 1248-1258
2010-02-15
11 pages
Article (Journal)
Electronic Resource
English
Calculation of optimal thermal load of intermittently heated buildings
| Online Contents | 2010
Heating-up load for buildings heated intermittently
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Heat requirements of intermittently heated buildings
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Heat requirements of intermittently-heated buildings
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Study of temperature variations in intermittently heated buildings
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