A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MILP design optimization of heat pump systems in German residential buildings
Abstract Heat pump systems are a key technology to decarbonize the building sector by electrifying the heat supply. Especially in refurbishments, heat pump systems compete against less cost intensive technologies such as gas boilers. To motivate homeowners to invest in heat pumps instead of gas boilers and thus, increase heat pumps’ market penetration, heat pump systems have to become more economical. In Europe, common heat pump system design standards use static rules and neglect system interdependencies to design a system ensuring energy supply as the main objective. However, the literature shows great potential to optimize the system design economically by including system dynamics and interdependencies between different components already in the design process. Therefore, we propose a mixed-integer linear program as a mathematical optimization framework to determine the economical optimal heat pump system design for a single-family house. Both design and operation of all components are optimized simultaneously considering system dynamics and component interdependencies. By optimizing the system, we reduce investment costs significantly about 45% in comparison to normative standards, while maintaining security of supply and not increasing electrical energy consumption. To further accelerate the building sector decarbonization, extension of operation optimization is highly recommended.
MILP design optimization of heat pump systems in German residential buildings
Abstract Heat pump systems are a key technology to decarbonize the building sector by electrifying the heat supply. Especially in refurbishments, heat pump systems compete against less cost intensive technologies such as gas boilers. To motivate homeowners to invest in heat pumps instead of gas boilers and thus, increase heat pumps’ market penetration, heat pump systems have to become more economical. In Europe, common heat pump system design standards use static rules and neglect system interdependencies to design a system ensuring energy supply as the main objective. However, the literature shows great potential to optimize the system design economically by including system dynamics and interdependencies between different components already in the design process. Therefore, we propose a mixed-integer linear program as a mathematical optimization framework to determine the economical optimal heat pump system design for a single-family house. Both design and operation of all components are optimized simultaneously considering system dynamics and component interdependencies. By optimizing the system, we reduce investment costs significantly about 45% in comparison to normative standards, while maintaining security of supply and not increasing electrical energy consumption. To further accelerate the building sector decarbonization, extension of operation optimization is highly recommended.
MILP design optimization of heat pump systems in German residential buildings
Krützfeldt, Hannah (author) / Vering, Christian (author) / Mehrfeld, Philipp (author) / Müller, Dirk (author)
Energy and Buildings ; 249
2021-06-18
Article (Journal)
Electronic Resource
English
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