Abstract

The abstract illustrates the aims, scope, structure and summarizes the concept of the article. However, the term “PV/T” is abbreviated before it is introduced and hence, it is recommended to write the full name before the abbreviation.

Title

The title is well-written and indicates the purpose and subject of the article.

Reference

Although the number of references is quite small, only 25, the review presents interesting works and give critical analysis of PV/T collectors. The paper was published in 2007, and the references were from 1958 to 2006, but mostly between 2001 and 2006 and hence are considered recent. Given that all reference are fully discussed and cited, they are relevant to the study.

Introduction

The introduction provides a good background to PV/T systems. However, it does not discuss the need for the review nor tell give a broad justification for it.

Methods

The method of review is to display and explain the different types of PV/T systems and associated works in the literature, e.g. concentrated PV/T collectors. Figures 4, 6, and 7 are of low quality and should be improved for the readers (to deliver their point).

Discussion

The review displays results from different papers to describe their findings and expand upon them. The paper does so to illuminate different concepts associated with PV/T systems. For instance, the authors explain how thermal performance can be of little use when considering thermal exergy, then references the work by Fujisawa and Tani.

Conclusion

The conclusion accurately summarizes the content of the article. The authors offered further discussion at the later part of the conclusion; however it is inline with the aims of the paper and highlights the utility of PV/T collectors.

Overall manuscript:

The study provides a simple introduction and review of PV/T technology with suitable figures and discussion of recent works (at the time it was published). Moreover, the shortcomings of different aspects of PV/T’s are discussed as well, along with possible solutions.

Strengths:

The types of PV/T systems are explained according to the taxonomy of PV/T’s and the studies were classified into analytical, numerical, simulation, and experimental.

Weaknesses:

1. In my opinion, the statement “PV modules convert solar radiation into electricity with peak efficiencies in the range of 5–20%.” Should be cited. (refer to introduction).
2. Too brief.