An experimentally validated, transient model for sheet and tube PVT collector

摘要

A first order dynamic model was developed and validated via experimental data for a PVT retrofitted collector. The model utilizes the analytic solution of collector's energy balance equation, with the purpose to estimate the absorber mean temperature via an iterative process. All collector's crucial parameters like the overall heat loss coefficient and collector efficiency factor are estimated for every simulation time-step, while PVT's optical efficiency is calculated analytically via the principal laws of optics.