Thermodynamic study of a LiBr–H2O absorption process for solar heat storage with crystallisation of the solution
Research output: Journal contributions › Journal articles › Research › peer-review
Standard
In: Solar Energy, Vol. 104, 06.2014, p. 2-15.
Research output: Journal contributions › Journal articles › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Thermodynamic study of a LiBr–H2O absorption process for solar heat storage with crystallisation of the solution
AU - N'Tsoukpoe, Kokouvi Edem
AU - Perier-Muzet, Maxime
AU - Le Pierres, Nolwenn
AU - Luo, Lingai
AU - Mangin, Denis
PY - 2014/6
Y1 - 2014/6
N2 - A heat storage process by absorption is studied in this paper. It is devoted to solar domestic systems. Energy and exergy studies are performed on the ideal cycle, and prove the contribution of the solution crystallisation to the system storage density, with an improvement of 22%, without degradation of the exergetic efficiency of the process. A prototype has been built and tested in conditions compatible with domestic solar thermal collectors. The process has been proved successful for heat storage. The heat charging was more efficient than the discharging phase, with respective heat transferred in the range of 1–2 kW and 0.3–0.5 kW, in typical solar domestic conditions. Crystallisation has been observed, and will increase the storage density but discrepancies were found between the ideal solution and the global prototype crystallisation behaviour, possibly due to some impurities presence, corrosion products and a slow dissolution kinetic.
AB - A heat storage process by absorption is studied in this paper. It is devoted to solar domestic systems. Energy and exergy studies are performed on the ideal cycle, and prove the contribution of the solution crystallisation to the system storage density, with an improvement of 22%, without degradation of the exergetic efficiency of the process. A prototype has been built and tested in conditions compatible with domestic solar thermal collectors. The process has been proved successful for heat storage. The heat charging was more efficient than the discharging phase, with respective heat transferred in the range of 1–2 kW and 0.3–0.5 kW, in typical solar domestic conditions. Crystallisation has been observed, and will increase the storage density but discrepancies were found between the ideal solution and the global prototype crystallisation behaviour, possibly due to some impurities presence, corrosion products and a slow dissolution kinetic.
KW - Energy research
KW - absorption
KW - crystallisation
KW - heat storage
KW - lithium bromide/water
UR - http://www.scopus.com/inward/record.url?scp=84899491223&partnerID=8YFLogxK
U2 - 10.1016/j.solener.2013.07.024
DO - 10.1016/j.solener.2013.07.024
M3 - Journal articles
VL - 104
SP - 2
EP - 15
JO - Solar Energy
JF - Solar Energy
SN - 0038-092X
ER -