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  • Adrián Caraballo1,2,
  • Santos Galán-Casado1 and
  • Ángel Caballero2,*
  • et al.

Reviewer 1: Anonymous Reviewer 2: Anonymous Reviewer 3: Anonymous

Round 1

Reviewer 1 Report

in file

Comments for author File: Comments.docx

Author Response

Dear Reviewer,

Please find enclosed our response to your comments.

Best regards,

Author Response File: Author Response.docx

Reviewer 2 Report

Manuscript number: energies-1117233

Title: Molten salts for sensible thermal energy storage: a review and an energy performance analysis

The manuscript is a review of the materials for thermal energy storage, selecting 15 such materials. The authors showed that nitrate-based materials are the best choice for their thermophysical properties, and the chloride-based materials, due to their low cost, are the best choice for economic impact. The studied subject is interesting and quite new. The review is well documented, having 130 references.

I have the following observations:

  1. The chemical and mathematical formulas must be corrected in entire manuscript, in order to introduce the subscripts.
  2. In Table 1 – “KZrF 32.5 KF - 67.5 ZnF4” – Is it ZrF4?
  3. Equation 4 must be corrected, it is not true.
  4. In Eq. 6 – M(OH) must be replaced with MOH.
  5. The references from 2020 are missing, and only few references from 2019 can be found.

Author Response

Dear Reviewer,

Please find enclosed our response to your comments.

Best regards,

Author Response File: Author Response.docx

Reviewer 3 Report

The paper has presented an extensive review study on thermal energy storage material and performance analysis. It provides lots of clear guidance and summarized information for the future work. I really enjoy reading and learning from it. After reviewing the manuscript, I have only two minor comments for your reference:

  1. The Abstract and Conclusion are kind of short and too brief. As a review paper, I am expecting the conclusions and introduction can be extended in more depth and instructive for the readers and new learners.
  2. Some symbols of chemical formulas are bit messed up. A nomenclatures are recommended for the parameters and coefficients used in the equation. 

Author Response

Dear Reviewer,

Please find enclosed our response to your comments.

Best regards,

Author Response File: Author Response.docx