Numerical and Experimental Investigations of Micro Thermal Performance in a Tube with Delta Winglet Pairs
Round 1
Reviewer 1 Report
The paper presents an interesting study and I do not have major scientific observations/suggestions.
The main issues are related with the English language which must be carefully checked. Sentences cannot start with "And...". It is not appropriate to use "What's more.." for instance (in the Abstract).
The Introduction is a mini-review with other authors did, which is excellent, but it must be improved as language and style.
Please also avoid the repetitions (e.g. "...e energy equation, momentum equation, and turbulence equation..." could be energy, momentum, and turbulence equations.
Please keep the same style (e.g. "...?? =1.5&?? =0°, ?? =0.5&?? =0° and ?? =0.5,?? =10°..."), preferably separated by comma instead of "&".
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
The comments are in a enclosed file.
Comments for author File: Comments.pdf
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The paper could be accepted in its present revised form.
Reviewer 2 Report
The subject of the paper are numerical and experimental investigations of micro thermal performance in a tube with delta winglet pairs. Comments The article focuses on the practical effects of the delta winglet pairs. The cognitive significance of the article is low.The article may be published in submitted form in the journal Micromachines.
