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Latent heat storage for centralized heating system in a ZEB living laboratory: integration and design

Latent heat storage for centralized heating system in a ZEB living laboratory: integration and design

Kategori
Konferansebidrag og faglig presentasjon
Sammendrag
The ZEB Lab project, coordinated by SINTEF and NTNU, aims at building a ZEB (Zero Emission Building) in Trondheim (Norway) in 2019, to be used both as office building and living laboratory. An innovative latent heat storage (LHS) unit using phase change material (PCM) will be integrated in the centralized heating system. The LHS unit will be able to store excess heat from various heat sources connected to the heating system, when they are not required for space heating. One challenge is to make use of the full potential of the PCM latent heat to have a compact and effective unit, while the unit itself should have a low associated CO2-footprint. The LHS system consists of two units designed for a total heat storage capacity of 0.6 MWh, corresponding to the heat needed on top of the heat pump to cover for up to 3 consecutive days in the coldest period of the year, with a maximum combined effect of 26 kW. A bio-based wax is used as PCM with melting temperature 37 °C and measured latent heat 198 kJ/kg. Dynamic system modelling is used to support the design of the LHS unit and ensure sufficiently high heat transfer rates.
Oppdragsgiver
  • SINTEF Energi AS / 502001554
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • SINTEF Energi AS / Termisk energi
  • Norges teknisk-naturvitenskapelige universitet
Presentert på
1st Nordic Conference on Zero Emission and Plus Energy Buildings
Sted
Trondheim
Dato
05.11.2019 - 08.11.2019
Arrangør
NTNU
År
2019