Biomass-based heating and hot water supply systems for prefabricated, high energy performance houses: A comparison of system configurations and control strategies
MetadataShow full item record
Nowadays prefabricated houses are becoming increasingly popular, thanks to their low cost and high energy performance. Heating systems installed in these houses should be carefully designed and controlled, to ensure sufficient thermal comfort while maintaining low fuel consumptions. This study presents the simulation of different system configurations and control strategies for a pre-fabricated house, located in Lower Austria. The house is heated by a 6 kW pellet boiler directly connected to a floor heating system, in a configuration without buffer storage tank. Using the TRNSYS simulation suite, a coupled simulation of the house and its heating and hot water supply system was set up, calibrated and validated with reference to monitoring data. As monitoring data evidenced that the control strategy of the heating system is not ideal to maintain a comfortable indoor temperature during the whole day, two improved strategies were simulated over the heating season and evaluated in terms of thermal comfort, pellet consumption and boiler’s efficiency. Moreover, to better understand the influence of the system configuration, simulations have been repeated considering another heat distribution system (radiators instead of floor heating). Results show that the radiators’ network, if adequately controlled, reduces by 85% the total discomfort time. In addition, the pellet boiler mainly operates in load modulation regime, leading to lower pellet supply rates and therefore to lower pellet consumptions (18% less than floor heating). However, the lower operational loads and frequent ignitions result in a slightly lower efficiency of the pellet boiler (4% less than the configuration with floor heating.
Contributo in Atti di convegno
Showing items related by title, author, creator and subject.
Connectivity in Cyber-Physical Production Systems: Three-Tier Industrial Internet System Model for Connectivity of heterogeneous Elements in Cyber-Physical Production Systems Rojas R; Rauch E; Matt DT (2018)In the "Smart Factory", cyber-physical systems (CPS) must be synchronized with each other and with the outside world in order to exchange information and trigger actions. This paper presents a model for the design of an ...
Matt, DT; Rauch, E (InTech, 2012)The geographically distributed production of fresh food poses unique challenges to the production system design because of their stringent industry and logistics requirements. The purpose of this research is to examine the ...
Collaborative Cloud Manufacturing: Design of Business Model Innovations Enabled by Cyberphysical Systems in Distributed Manufacturing Systems Rauch E; Seidenstricker S; Dallasega P; Hämmerl R (2016)Collaborative cloud manufacturing, as a concept of distributed manufacturing, allows different opportunities for changing the logic of generating and capturing value. Cyberphysical systems and the technologies behind them ...