Techno-Economic Assessment of Active Latent Heat Thermal Energy Storage Systems with Low-Temperature District Heating

International Journal of Sustainable Energy Planning and Management

Bruno Lacarrière¹  Alberto Rossi Espagnet²  Jose Fiacro Castro Flores²  Justin NingWei Chiu²  Viktoria Martin² 

[1] Department of Energy Systems and Environment, École des Mines de Nantes, 44307, Nantes, France;Department of Energy Technology, Royal Institute of Technology, Stockholm, SE-100 44, Sweden;

关键词: Low-Temperature District Heating (LTDH);    Thermal Energy Storage (TES);    Latent heat;    Sensible heat;    Techno-economic assessment;   

DOI  :  10.5278/ijsepm.2017.13.2

来源: DOAJ

【 摘 要 】

Thermal energy storage (TES) is a set of technologies with the potential to enhance the efficiency and flexibility of the 4th generation of district heating systems. This study presents a comparative techno-economic assessment of active TES systems suited to operate with low-temperature district heating (LTDH) for short-term heat storage applications. Latent heat systems (LH-TES) are compared qualitatively and quantitatively to water-based sensible heat systems (SH-TES). It is concluded that latent heat TES systems are still more expensive than water-based systems regarding energy storage cost (EUR/kWh) ranging from 1.5 to 4 times more, mainly due to the cost of the storage media. However, considering distributed TES systems integrated to LTDH, small-scale active LH-TES systems will become more cost-competitive as storage media costs are expected to decline in the future. This study represents a step forward in the development and improvement of the DH system through the integration of TES which will play a key role in the future smart energy system.

【 授权许可】

Unknown