Interim : Interdisciplinary Journal

This study proposes a numerical model for the conversion of solar energy from sunlight to mechanical energy of the Organic Rankine Cycle (ORC). The model has the following elements: a solar resources model, a solar collector model, a storage model and the Organic Rankine Cycle model. 

The study results prove the validity and potential of the type of power plant models from outputs. Based on the study's outcome, the model from popular Microsoft Excel™ provided some realistic tools with which to analyse the variations in geometrical properties with thermo-physical properties for a period. Knowledge gained from the review of the literature and the study results reveal that the ORC power plant is an alternative to renewable energy generation. The paper also points to further modifications and derivations as applied to the area of interest for model development.

The aim of this study was to consider what research initiatives report about efficacious teachers. Personal teacher efficacy (PTE) was evaluated as part of teachers' personal characteristics. Teachers provide school education and therefore teacher efficacy is reflected in the teaching process and practice. Teacher efficacy ultimately determines the success of long-lasting learning, which begins in the classroom. Previous research indicates that efficacious teachers are capable of changing learners' attitudes about school, increasing their motivation to learn, and boosting their academic achievement. This study ascertained the perceived levels of teacher efficacy with regard to classroom teaching among Further Education and Training (FET) teachers in the Lejweleputswa district, Free State province. Applied teacher efficacy could enhance teaching and learning in schools and simultaneously, potentially elevate the standing of schools and learning to levels of international competitiveness.