Multi-Objective Optimization of the Envelope of Building with Natural Ventilation

Krzysztof Grygierek and Joanna Ferdyn-Grygierek
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Krzysztof Grygierek: Faculty of Civil Engineering, The Silesian University of Technology, 44-100 Gliwice, Poland
Joanna Ferdyn-Grygierek: Faculty of Energy and Environmental Engineering, The Silesian University of Technology, 44-100 Gliwice, Poland

Energies, 2018, vol. 11, issue 6, 1-17

Abstract: A properly designed house should provide occupants with the high level of thermal comfort at low energy demand. On many occasions investors choose to add additional insulation to the buildings to reduce heat demand. This may lead to overheating of the building without a cooling system in summer periods (these prevail in Poland). Additionally, it affects the deterioration of thermal comfort, which can only be improved by increasing ventilation. The paper presents the multi-objective optimization of the selected design parameters in a single-family building in temperate climate conditions. The influence of four types of windows, their size, building orientation, insulation of external wall, roof and ground floor and infiltration on the life cycle costs and thermal comfort is analyzed for the building without cooling. Infiltration changes during the simulation and is controlled by a special controller. Its task is to imitate the behavior of occupants in changing the supply airflow. Optimal selection of the design parameters is carried out using Non-dominated Sorting Genetic Algorithm II (NSGA-II) by coupling the building performance simulation program EnergyPlus with optimization environment. For the single-family house, optimal values of design variables for three different criteria are presented.

Keywords: multi-objective optimization; heating demand; genetic algorithms; building envelope; life cycle costs; thermal comfort (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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