Simplified multiple linear regression based model for solar collectors

Abstract

A recent accurate multiple linear regression (MLR) based collector model is simplified to gain a more easy-to-apply model with still good accuracy. The new model (SMLR model) is validated and compared with the former MLR based model (MLR model) and with a physically-based model used successfully in applications. Based on measurements, the SMLR model is nearly the same accurate as the physically-based one but more easy-toapply than the physically-based and the MLR models. The computational demand is also lower than in case of any former model. Accordingly, the SMLR model is suggested for fast but relatively accurate collector modelling.