Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

The sizing of energy storages or how valuable is the last step?

The sizing of energy storages or how valuable is the last step? This paper presents the electric energy self-sufficiency and the grid independence rate of a residential building equipped with a photovoltaic (PV) roof, as a function of battery capacity. Thermal energy self-sufficiency is enlarged by driving a heat pump (HP) with the electricity surplus of the PV system. The size of the thermal storage tank was varied from 0.3 up to 50 m3. Further on, the effect of using the building mass as a thermal storage was investigated. The considerations deal with theoretical investigations of the sizing of both electrical- and thermal storage systems in order to reduce the load on the supply grids under economic conditions. The investigation of storage capacities is based on thermal-energetic building and plant simulations. A new cost-benefit assessment for storage systems, which considers calendrical lifespan and charging cycles, is presented. The simulation results show that small to middle sized decentralized electrical and thermal storage are an economic way to keep the power grid stable during day cycle, while reducing CO2-emissions by using more renewable energies. Here the thermal mass of the building can also be used as a short-term storage. Running seasonal storage that guaranties 100% grid independence economical is almost impossible today. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advances in Building Energy Research Taylor & Francis

The sizing of energy storages or how valuable is the last step?

Download PDF

The sizing of energy storages or how valuable is the last step?

Abstract

This paper presents the electric energy self-sufficiency and the grid independence rate of a residential building equipped with a photovoltaic (PV) roof, as a function of battery capacity. Thermal energy self-sufficiency is enlarged by driving a heat pump (HP) with the electricity surplus of the PV system. The size of the thermal storage tank was varied from 0.3 up to 50 m3. Further on, the effect of using the building mass as a thermal storage was investigated. The considerations...
Loading next page...
 
/lp/taylor-francis/the-sizing-of-energy-storages-or-how-valuable-is-the-last-step-bnpfB9q90H
Publisher
Taylor & Francis
Copyright
© 2019 Informa UK Limited, trading as Taylor & Francis Group
ISSN
1756-2201
eISSN
1751-2549
DOI
10.1080/17512549.2019.1588166
Publisher site
See Article on Publisher Site

Abstract

This paper presents the electric energy self-sufficiency and the grid independence rate of a residential building equipped with a photovoltaic (PV) roof, as a function of battery capacity. Thermal energy self-sufficiency is enlarged by driving a heat pump (HP) with the electricity surplus of the PV system. The size of the thermal storage tank was varied from 0.3 up to 50 m3. Further on, the effect of using the building mass as a thermal storage was investigated. The considerations deal with theoretical investigations of the sizing of both electrical- and thermal storage systems in order to reduce the load on the supply grids under economic conditions. The investigation of storage capacities is based on thermal-energetic building and plant simulations. A new cost-benefit assessment for storage systems, which considers calendrical lifespan and charging cycles, is presented. The simulation results show that small to middle sized decentralized electrical and thermal storage are an economic way to keep the power grid stable during day cycle, while reducing CO2-emissions by using more renewable energies. Here the thermal mass of the building can also be used as a short-term storage. Running seasonal storage that guaranties 100% grid independence economical is almost impossible today.

Journal

Advances in Building Energy Research – Taylor & Francis

Published: Jul 2, 2020

Keywords: Electrical storage; thermal storage; economic sizing of energy storages; effective storage costs; self-sufficiency by energy storage

References

  • Zero-energy buildings: The challenges
  • Marktuebersicht Batteriespeicher
  • Zero energy level and economic potential of small-scale building-integrated PV with different heating systems in Nordic conditions
  • Renovation concepts for net zero energy buildings – best practice residential building Kapfenberg/Austria
  • Recent progress on net zero energy buildings
  • Analysis of grid interaction indicators in net zero-energy buildings with sub-hourly collected data
  • Peak load shifting control using different cold thermal energy storage facilities in commercial buildings: A review
  • Energy storage system for self-consumption of photovoltaic energy in residential zero energy buildings