Model complexity of heat pump systems to investigate the building energy flexibility and guidelines for model implementation

Clauß, John; Georges, Laurent

doi:10.1016/j.apenergy.2019.113847

Cited by 42 publications

(26 citation statements)

References 31 publications

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“…In this study, minimum compressor on-or off-time is not considered in the VCHP unit modelling. As noted in Clauß et al, these constraints may change the number of on/off cycles, and impact energy flexibility metrics (which are beyond the scope of this work) [16]. This analysis represents a conservative estimate with no control limits on cycling.…”

Section: Modelling Limitationsmentioning

confidence: 91%

Studying the impact factors influencing variable-capacity heat pump energy performance through simulation

et al. 2021

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Cold-climate variable-capacity air-to-air heat pumps (VCHPs) have the potential to significantly reduce energy use in the Canadian residential sector. However, optimizing their integration in the Canadian climate can be a challenge, with efficiency and operating behaviour heavily dependent on ambient conditions, building thermal loads, modulating capability and the units’ individual performance characteristics. Better understanding how these factors influence energy performance can lead to improved system selection, and ensure that high efficiency space heating systems contribute towards meeting Canada’s emission reduction targets. This study outlines three major factors – individual performance characteristics (cold climate capacity, part load performance), modulation ratio and sizing – related to VCHP selection, and examines their relative impact on annual energy use and operating behaviour using a simulation-based approach.

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Section: Modelling Limitationsmentioning

confidence: 91%

Studying the impact factors influencing variable-capacity heat pump energy performance through simulation

et al. 2021

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“…Appropriate control strategies are necessary also for unlocking building flexibility potential, as shown in recent research. Finally, the definition of an appropriate level of modelling complexity is crucial to realistically simulate the impact of existing control strategies (Clauß & Georges, 2019) in the design phase.…”

Section: First Line Of Research Trajectory: Towards Pebs Netsmentioning

confidence: 99%

Envisioning Building-as-Energy-Service in the European context. From a literature review to a conceptual framework

Sibilla

Manfren

2021

Architectural Engineering and Design Management

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Positive Energy Buildings (PEBs) represent an emerging paradigm for high performance in the building sector. This paradigm focuses on the possibility of exploiting the interaction between individual NZEBs and smart Smart Grids, using energy surplus exchange. Acknowledging this technical potential, building sector should re-think the role of individual buildings as nodes of intelligent energy infrastructures with large penetration of distributed renewable energy resources. This requires a better understanding of the emerging properties related to PEBs and an organisation of new alliances across sectors in order to put PEBs nets into practice. However, there is no evidence of a comprehensive sociotechnical framework concerning PEBs nets working at scale. This paper aims to fill this gap. Through a literature review, based on Constructive Grounded Theory Method, it proposes a new conceptual framework focused on Buildings-as-Energy-Service as a key enabler for creating PEBs nets. Research findings are organised according to four integrated lines of research, which describe: the trajectory towards PEBs nets; the management of new alliances across sectors; the definition of an ecosystem of applications for PEBs; and, the socio-technical implications in putting PBEs into practice. These research lines may contribute to reinventing the role of the building sector in delivering tailor-made products and services for a low carbon society. Thus, academic and non-academic stakeholders in the fields of Architecture, Engineering, Construction, and Planning might find this conceptual framework useful, as it summarises significant potential interactions among these sectors, emerging from recent studies.

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“…Therefore, the peak power of ideal heaters can be used as they behave similarly to electric radiators. The peak hours of the grid were defined between 7:00 and 10:00 and 17:00-20:00, which are the same hours as in the study by Clauβ and Georges [22].…”

Section: Stove Performance Indicatorsmentioning

confidence: 99%

Parametric Energy Simulations of a Nordic Detached House Heated by a Wood Stove

et al. 2020

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Wood stoves are widely used in Nordic countries. They offer a good opportunity to use biomass for space-heating and to reduce the peak power of all-electric buildings. However, wood stoves are highly concentrated heat sources with limited control compared to other typical heat emission systems, which makes the assessment of their impact challenging. This study introduces a simulation-based parametric study of a detached house equipped with a wood stove located in Oslo, Norway. The respective impact of different building parameters and stove nominal powers on the building performance is illustrated. The analysis shows that the annual total space-heating needs (i.e. the sum of the base load, modelled as ideal heaters representing the electrical radiators, the stove and the heating of the ventilation supply air) increased significantly due to the higher average indoor temperature. The resulting heat emission efficiency of the stove ranged between 66% and 90%. However, the stoves covered between 28% and 62% of the total space-heating needs. When using the stove, the maximum hourly-averaged power for the electrical radiators decreased between 5 W/m2 and 31 W/m2 during the peak hours of the electricity grid. The building thermal mass, insulation level, as well as the combination of internal door position with the bedroom temperature setpoint, had a significant impact on the calculated values. Finally, the study revealed that the occupant behaviour modelling should be improved to better capture the wood stove impact on the energy performance using building simulations.

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Model complexity of heat pump systems to investigate the building energy flexibility and guidelines for model implementation

Cited by 42 publications

References 31 publications

Studying the impact factors influencing variable-capacity heat pump energy performance through simulation

Studying the impact factors influencing variable-capacity heat pump energy performance through simulation

Envisioning Building-as-Energy-Service in the European context. From a literature review to a conceptual framework

Parametric Energy Simulations of a Nordic Detached House Heated by a Wood Stove

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