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Experimental behavior of a 100 kWhth fin-tube latent heat storage using eutectic KNO3- NaNO3 as PCM

Kenny Couvreur (UGent) , Jonas Timmerman (UGent) , Wim Beyne (UGent) , Sergei Gusev (UGent) , Michel De Paepe (UGent) , Wolf-Dieter Steinmann and Bruno Vanslambrouck (UGent)
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Abstract
Thermal energy storage (TES) can reduce the need for dispatchable energy sources for two reasons: Firstly, it can bridge the mismatch in time between energy supply and energy demand on the electrical grid, by converting electrical energy into thermal energy, storing this thermal energy and when needed converting this thermal energy back to electricity by means of a heat to power cycle. Secondly, recovery of waste heat from industrial processes using TES can reduce the final energy consumption. In this paper, the behavior of a pilot scale latent heat thermal energy storage (LHTES) unit with a (latent) storage capacity of 100 kWh is experimentally analyzed. As phase change material (PCM) an eutectic nitrate salt mixture of KNO3 and NaNO3 is used with a phase change temperature of 222°C. The storage unit is a finned shell-and-tube type heat exchange and is part of a test rig consisting of a 250 kWe heater and 11 kWe ORC, interconnected via a thermal oil circuit. To characterize the storage unit, the evolution of the HTF outlet temperature and the charging power is analyzed at different HTF inlet temperatures and flow rates.

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MLA
Couvreur, Kenny, et al. “Experimental Behavior of a 100 KWhth Fin-Tube Latent Heat Storage Using Eutectic KNO3- NaNO3 as PCM.” Eurotherm Seminar #112 Advances in Thermal Energy Storage, 2019.
APA
Couvreur, K., Timmerman, J., Beyne, W., Gusev, S., De Paepe, M., Steinmann, W.-D., & Vanslambrouck, B. (2019). Experimental behavior of a 100 kWhth fin-tube latent heat storage using eutectic KNO3- NaNO3 as PCM. In Eurotherm Seminar #112 Advances in Thermal Energy Storage. Lleida, Spain.
Chicago author-date
Couvreur, Kenny, Jonas Timmerman, Wim Beyne, Sergei Gusev, Michel De Paepe, Wolf-Dieter Steinmann, and Bruno Vanslambrouck. 2019. “Experimental Behavior of a 100 KWhth Fin-Tube Latent Heat Storage Using Eutectic KNO3- NaNO3 as PCM.” In Eurotherm Seminar #112 Advances in Thermal Energy Storage.
Chicago author-date (all authors)
Couvreur, Kenny, Jonas Timmerman, Wim Beyne, Sergei Gusev, Michel De Paepe, Wolf-Dieter Steinmann, and Bruno Vanslambrouck. 2019. “Experimental Behavior of a 100 KWhth Fin-Tube Latent Heat Storage Using Eutectic KNO3- NaNO3 as PCM.” In Eurotherm Seminar #112 Advances in Thermal Energy Storage.
Vancouver
1.
Couvreur K, Timmerman J, Beyne W, Gusev S, De Paepe M, Steinmann W-D, et al. Experimental behavior of a 100 kWhth fin-tube latent heat storage using eutectic KNO3- NaNO3 as PCM. In: Eurotherm Seminar #112 Advances in Thermal Energy Storage. 2019.
IEEE
[1]
K. Couvreur et al., “Experimental behavior of a 100 kWhth fin-tube latent heat storage using eutectic KNO3- NaNO3 as PCM,” in Eurotherm Seminar #112 Advances in Thermal Energy Storage, Lleida, Spain, 2019.
@inproceedings{8621799,
  abstract     = {Thermal energy storage (TES) can reduce the need for dispatchable energy sources for two
reasons: Firstly, it can bridge the mismatch in time between energy supply and energy demand
on the electrical grid, by converting electrical energy into thermal energy, storing this thermal
energy and when needed converting this thermal energy back to electricity by means of a heat to
power cycle. Secondly, recovery of waste heat from industrial processes using TES can reduce
the final energy consumption. In this paper, the behavior of a pilot scale latent heat thermal energy
storage (LHTES) unit with a (latent) storage capacity of 100 kWh is experimentally analyzed. As
phase change material (PCM) an eutectic nitrate salt mixture of KNO3 and NaNO3 is used with a
phase change temperature of 222°C. The storage unit is a finned shell-and-tube type heat
exchange and is part of a test rig consisting of a 250 kWe heater and 11 kWe ORC, interconnected
via a thermal oil circuit. To characterize the storage unit, the evolution of the HTF outlet
temperature and the charging power is analyzed at different HTF inlet temperatures and flow
rates.},
  articleno    = {T179},
  author       = {Couvreur, Kenny and Timmerman, Jonas and Beyne, Wim and Gusev, Sergei and De Paepe, Michel and Steinmann, Wolf-Dieter and Vanslambrouck, Bruno},
  booktitle    = {Eurotherm Seminar #112 Advances in Thermal Energy Storage},
  isbn         = {9788491441557},
  language     = {eng},
  location     = {Lleida, Spain},
  pages        = {10},
  title        = {Experimental behavior of a 100 kWhth fin-tube latent heat storage using eutectic KNO3- NaNO3 as PCM},
  year         = {2019},
}