CFD Analysis of Different Ventilation Strategies for a Room with a Heated Wall
Round 1
Reviewer 1 Report
This manuscript entitled " CFD Analysis of Different Ventilation Strategies for a Room with a Heated Wall" investigated three configurations of two solar chimneys combined with a heated wall for natural ventilation of a room using numerical simulations. Compared to the conventional single channel solar chimney, the proposed configurations enhance the flow rate by up to 40%. I would like to recommend this paper for publication in Buildings after the authors addressed my several concerns. Here are the details:
1. Although dozens of works have been mentioned in the literature part, the motivation of this work was not specified. The motivation of “the proposed configuration is shown in Figure 1 in this study has not been evaluated in the literature” is not convinced. It makes the reviewer feel that this work is lack novelty. The authors need to clearly summarize the progress in the field and present their contributions to the pool of existing knowledge.
2. The Renold number is needed to show the flow is turbulent. How the selected turbulent model influence the simulated results is needed to be clarified.
3. The grid independence is needed to show the convergence of the simulations.
4. While the validation looks great, it would be good to let the readers know about the experiment details. For the benefit of the readers, it is important to explain the boundary and flow conditions of the experiments performed by the cited author.
Author Response
Dear Reviewer,
Thank you very much for your time to review our manuscript. Please see the attachment for our responses to your comments.
Best regards,
Quoc Y
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Dear Author(s),
Your article is interesting and can meet the requirements of scientific article, however I have some questions. Bellow you can find my remarks: .
1. Introduction:
a. The literature can be improving. E.g the citation Bansal et al.,1993 is almost 30 years old and you should add some more newer one to show that it is till a relevant topic today.
b. You have to improve the literature review, it is quite scarce.
In the next paragraph add more citations about solar chimneys in different counties not just the two. Also, since your study is a CFD study please add reference to CFD simulations concerning solar chimneys, e.g: Lechowska A et al “CFD modelling of transient thermal performance of solar chimney used for passive ventilation in a building” IOP Conference Series: Materials Science and Engineering, Volume 415, Issue 11 November 2018.
You can also add literature to back up the usage of CFD for ventilation methods like: Szczepanik N. “CFD simulations and measurements of carbon dioxide transport in a passive house” Refrigeration Science and Technology, 24th IIR International Congress of Refrigeration, ICR 2015 Yokohama; and: Peter V. Nielsen "Fifty years of CFD for room air distribution" Building and Environment journal, 2015
The part where you start showing figure 1 and discussing the channels/configurations should be in the methods section. The introduction needs improvement with a more solid literary review.
chapter two “Review of related literature” should be part of the introduction and should be integrated in the text. Not just pointing out the authors.
2. CFD model
· “The mesh size decreases toward the solid walls”: please add the minimum and maximum mesh size
· how many elements did the mesh have and did you perform an independency test for the grid?
· The heat flux was distributed on one wall of the air channel at 600 ?/?2 – ad source for this value – is the medium solar intake for Vietnam?
Author Response
Dear Reviewer,
Thank you very much for your time to review our manuscript. Please see the attachment for our responses to your comments.
Best regards,
Quoc Y
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
All my comments have been satisfactorily addressed; I would like to recommend this paper for publication.
Author Response
Dear Reviewer,
Thank you very much for your recommending our manuscript for publication.
Best regards,
Quoc Y
Reviewer 2 Report
Dear authors, thank you for taking into amount my remarks.
Author Response
Dear Reviewer,
Thank you very much for your recommending our manuscript for publication.
Best regards,
Quoc Y
