Experimental validation of a theoretical model: Uncertainty propagation analysis to a PCM-air thermal energy storage unit

摘要: Abstract This paper analyzes the uncertainties propagation of theoretical model developed to simulate thermal performance PCM-air heat exchanger. Numerical results are compared with experimental obtained a full-scale exchanger prototype. In model, energy equation is considered in terms enthalpy, as governing can be applied at any stage, determining temperature each point and therefore assessing value PCM thermophysical properties. Due input variables, this analysis provides band uncertainty associated solution that useful more realistic when comparing simulated results. sense, for most process, there has been observed high degree overlapping between two different rate curves. For type exchangers, also quantifies consequences imply making effort improving determination parameter or enhancing measurement variable. study case, it not worth invest efforts average phase change an better than ±0.25 °C main response rate.