Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Integrated design of refrigerant, heat pump and system components: Process intensification for optimized heat pump systems

Christian Vering, Sebastian Ostlender, Fabian Wuellhorst, Philipp Mehrfeld, Dirk Müller
RWTH Aachen University, Germany

Abstract: Conventional design methods oversize heat pump systems to ensure heat supply coverage. Oversizing might lead to efficiency losses due to part load operation and to high investment cost. To overcome those issues already in the design process, decisions on refrigerant, heat pump and system level must be made simultaneously. Based on process intensification and a stepwise simulation procedure, we introduce integrated design and refine it to pave the way towards model predictive control (MPC). Compared to conventional methods, annualized costs (emissions) are reduced by 15% (10%) using the same refrigerant and flowsheet even without MPC. Further developments presumably offer even higher potential using MPC.
Keywords: Heat pump design, genetic algorithm, cost and emission optimization
Pages: 696 - 703