TY - JOUR
TI - Modelling of mixed thermodynamic model based on new materials
AU - Geng Cheng
JN - Thermal Science
PY - 2023
VL - 27
IS - 2
SP - 1067
EP - 1074
PT - Article
AB - In order to solve the problem of the performance of mixed alkane phase change  energy storage materials, this paper proposes the modelling research of  mixed thermodynamic model based on new materials. In this paper, the  thermodynamic performance of binary mixed alkane system is studied, the  influence of phase transition temperature, phase transition enthalpy and its  composition on the mixed alkane system is explored, and its solid-liquid  phase diagram is drawn. We used different thermodynamic models to predict  the phase transition temperature and enthalpy in the melting process of  binary mixed alkanes, which were mutually verified with the experimental  results. The experimental results show that C9-C10 and C9-C11 systems  exhibit eutectic behavior. The eutectic components are 88% (mass fraction,  the rest is the same) C9-12% C10 and 90% C9-10% C11. The eutectic  temperatures are 218.25 K and 215.15 K, respectively. The C8-C9 system has  peritectic phenomenon, C10-C11 system shows complete mutual solubility, and  their mini­mum melting points are 200.25 K and 234.35 K, respectively.  Conclusion is that the C9-C10 and C9-C11 eutectic systems are suitable for  low temperature phase change materials in the temperature range of 210-220  K, providing data reference for their application in low temperature energy  storage.