Energy Refurbishment of Serbian School Building Stock—A Typology Tool Methodology Development

Round 1

Reviewer 1 Report

Even if the paper Energy refurbishment of Serbian school building stock –
A typology tool methodology development tackles a very interesting topic, it has a lot of methodology and presentation flaws. In order to be considered for being published in this Journal, the authors must first conduct several important changes in their article.

 

1. Figures 1, 3, 4 are not clear. Even if the information is indeed interesting and helps the reader to better understand the methods and results, one simply can not read the text. They should have better quality or, if not possible, the authors must split the big picture in several smaller ones.
2. On page 4/17, the authors affirm that they developed a software, but no detail or reference to it, decreasing the reproducibility of the results.
3. There are a lot of undefined therms (Q_{H.nd rel,} Q_{H.nd rel}, A2_S, C3_ST). They should be defined first when used in the paper
4. The methodology for estimating the heating demand is not provided. Even if the authors mention it briefly and offer several national and/or international regulations, the foundation is not presented. 
5. It lacks the economical analysis, without which the retrofit strategies are not viable. The authors may use some specific software (like RETSCreen) in order to conduct the economical analysis, and then jump to conclusions).

Author Response

Thank you for the comments, please see the attachment for further explanations.

Author Response File: Author Response.docx

Reviewer 2 Report

The abstract should show the finding of the research. 
The figures should be improved, they are too small to see. 
The improvements should be shown in a table to show the parameters that should be improved. 

Author Response

Thank you for the comments, please see the attachment for further explanations.

Author Response File: Author Response.docx

Reviewer 3 Report

• Difficulty in reading the graphs and figures/appearing blurred (Figures 1, 3, 4)
• How the calculations for energy performance in the representative buildings are done? Not clear- How the code books specified has been used? Could be detailed a bit for better understanding?
• Are the types of HVAC system, climatic aspects, and occupancy patterns also considered during the cluster analysis study? Refer: https://doi.org/10.1016/j.scitotenv.2021.150249
• Were the actual building energy consumption data also taken for conducting an initial performance prediction and cluster analysis? Wouldn’t it give a better picture?
• Were any building energy simulation studies done or only mathematical calculations from code books used for energy calculations, won’t there be any errors in calculation?

Author Response

Thank you for the comments, please see the attachment for further explanations.

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

The author improved the quality of their paper.