Experimental test of a hot water storage system including a macro-encapsulated phase change material (PCM)

34th UIT Heat Transfer Conference 2016

Mongibello, L.^1 ; Atrigna, M.^1 ; Bianco, N.^2 ; Di Somma, M.^1 ; Graditi, G.^1 ; Risi, N.^2

ENEA - Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici R.C. - P.le E. Fermi, 1, Portici NA

80055, Italy^1

Dipartimento di Ingegneria Industriale (DII), Università di Napoli Federico II, P.le Tecchio, 80, Napoli

80125, Italy^2

关键词: Dynamic behaviours;    Encapsulated phase change materials;    Experimental test;    Hot water storage;    Hot water storage tanks;    Temperature profiles;    Temporal evolution;    Thermal energy storage systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/796/1/012030/pdf
DOI  :  10.1088/1742-6596/796/1/012030

来源: IOP

【 摘 要 】

Thermal energy storage systems (TESs) are of fundamental importance for many energetic systems, essentially because they permit a certain degree of decoupling between the heat or cold production and the use of the heat or cold produced. In the last years, many works have analysed the addition of a PCM inside a hot water storage tank, as it can allow a reduction of the size of the storage tank due to the possibility of storing thermal energy as latent heat, and as a consequence its cost and encumbrance. The present work focuses on experimental tests realized by means of an indoor facility in order to analyse the dynamic behaviour of a hot water storage tank including PCM modules during a charging phase. A commercial bio-based PCM has been used for the purpose, with a melting temperature of 58°C. The experimental results relative to the hot water tank including the PCM modules are presented in terms of temporal evolution of the axial temperature profile, heat transfer and stored energy, and are compared with the ones obtained by using only water as energy storage material. Interesting insights, relative to the estimation of the percentage of melted PCM at the end of the experimental test, are presented and discussed.