Design of Liquid–Air Hybrid Cooling Garment and Its Effect on Local Thermal Comfort
Round 1
Reviewer 1 Report
The article is very interesting howver the structure is not clear and should be improved for better understanding.
Comments for author File: 
Comments.docx
Author Response
We would like to extend our appreciation and thanks to the reviewer for the valuable feedback and suggestions that helped us improve the manuscript's quality. We have addressed the raised comments point by point in the following section and also in the attached file.
Please make the article more clear and rearrange the part 2 Materials and methods. In part 2 the general and specific information about the materials and methods should be shifted in part 1. In part 2 only the information about the used materials and methods should be mentioned.
Author’s reply: Thank you for your valuable comment. These parts have been rearranged and revised.
Line 116 – 136 (inclusive the figure) should be shifted under part 1 (only general information)
The part 2.2 liquid pipes
- All general information should be shifted in part 1
- Only the used technologies should be described here
Please think about the title of the part 2.2.
Author’s reply: These parts including the titles have been revised. Thank you!
Here the pipes and the circulation system is described however the title only mentioned the liquid pipes
In this part I miss the information about the whole cooling ensemble.
Author’s reply: Thank you for the valuable comment. This section has been revised, and added information about the whole cooling ensemble.
What is the weight of the vest which the test subjects are wearing? The parts of the vest are described but not the whole system/ensemble.
Author’s reply: Thank you for the comment. The overall weight of each vest worn by the subject has been added in 2.2. in Line 146-147, and the weight of the whole ensemble of the cooling box has been added in 3.3.3 in Line 235.
Other comments:
Side 1, line 8 Only three cooling garments are designed and 1 control garment. The control garment has no cooling systems and therefore this garment is not a cooling garment.
Author’s reply: Thank you for the comment. Yes, the control garment has no cooling system and it was not a cooling garment. We have revised the name of it.
Side 1, line 22. At present, the main measures for the hot environment are the use of air conditioning and building ventilation systems. This sentence makes no sense – please describe that cooling systems are used in hot environments to cool the temperature.
Author’s reply: Thank you for the comment! These parts have been revised.
Side 1 line 26 a hot topic – please rewrite the word more scientific. and add: since years
Author’s reply: Thank you for the comment. These sentence has been revised.
side 4, line 132-135. here general information are descripted which should be placed in part 1.
side 5 line 162-167 general information – please move the information into part 1
Author’s reply: Thank you for the comment. These information were the reason why the presented materials and devices were selected and used for the cooling garments. We have revised these sentences.
side 5, line 168/169 a lower density aluminum tube was chosen and used in AAL. what is the lower density – without a value this information has no sense. Please add the density value of the AAL tube.
Author’s reply: Thanks for the comment! We have added the density values of the aluminum tube and the silicone tube in 3.2. in Line 173 and Line 177, and also in Table 3.
information about the weight of the product – the whole cooling vest with all equipment is missing. Information are necessary for the comparison of the systems.
Author’s reply: Thank you for the comment. The overall weight of each vest worn by the subject has been added in 2.2. in Line 146-147, and the weight of the whole ensemble of the cooling box has been added in 3.3.3 in Line 235.
Side 6, line 250 chamber and rested for a while – please add more detailed information (as written in the table) also here.
Author’s reply: Thank you for your comment. These parts have been revised.
Side 6, line 251 with wearing underwear, underpants, socks, casual pants, and sneakers. Are the subjects wearing their one underwear? In this case, are the subjects wearing the equal underwear? Please give more information about all clothes which were used in the wearer trials. Unclear: how the sensors were attached – on the skin or on the underwear.
Author’s reply: Thank you for your comment. The sensors were attached on the skin of the right side of the subjects by medical tapes, during which the subjects were wearing their own bras, briefs, socks, and sneakers. This information was added in Line 275-277.
Please describe more precise the procedure: The acclimation time is 20 min and this includes the fixing of the sensors? That is not clear described. Usually the time for preparing the test persons with sensor is additional time. The acclimatization time is not disturbed from any action.
Author’s reply: Thank you for your comment. The subjects came to the lad and rested for 20min for acclimation, during which they sat quietly on chairs. After that, they took off their outwears and sensors were attached on their skin by the experiment staffs. These were added in the revised paper.
Side 7, line When are the test subjects give there feeling – every 5 min or only at the end of the test? Please give more precise information for better understanding.
Author’s reply: Thank you for your comment. This has been added in 4.2 Line 310-311. The perceptual responses were measured every nine minutes, and the total duration of the experiment was 45 minutes, so six times was measured.
Side 8 line 277 In the text Figure 9 is mentioned – is this correct? Or is it figure 8?
Author’s reply: Thank you for the comment! This has been revised.
Side 9 Figure 9 the title is not sufficient. The pictures show one test subject in the sitting position
Author’s reply: Thank you for your comment. This has been revised.
side 11 Figures 10 Please add the times lot (15 min/30 min, 45 min) under the graphs. Without the time call, the graphs are not understandable.
Author’s reply: Thank you for your comment. The figures have been revised.
Side 12, Figure 11 and following: All these figures have a very short title; please give more information what the figures show. What is the meaning of the green star? Please, give the explanation in the text and also in the description of the figures.
Author’s reply: Thank you for your valuable comment. These parts have been revised. * (green star) indicates significance at p<0.01 level.
Author Response File: Author Response.docx
Reviewer 2 Report
Ø After reading the manuscript entitled Design of liquid-air hybrid cooling garment and its effect on 2 local thermal comfort, authors: Wanwan Wang and Mengmeng Zhao, I could observe that approached subject: the selection and design of personal cooling garments used in hot indoor environment for improve thermal comfort, is usefully.
Ø The paper analyzed three liquid-air hybrid cooling garments: aluminum tube fan cooling (AAL), silicone tube fan cooling (SAL), silicone tube fan cooling with inner yarn (YAL), by comparison with a control garment (CON) without the cooling sources.
Ø The obtained results are represented by suggestive diagrams and figures (Figs.10-15). Their interpretations according to the discussions show that the liquid-air cooling garments provided effective convection and conduction of heat dissipation compared to the no cooling state, resulting in a significant decrease in local skin temperature, mean skin temperature, mean torso skin temperature, thermal sensation, and an increase in thermal comfort while having little effect on core temperature..
Ø There are some limitations in the study and I suggest and ask authors to highlight the usefully of this study by comparison with another composition of the Liquid-air Hybrid Cooling Clothing system or the influence of the climatic chamber changes.
Ø Title is informative and reflects the contents and the Introduction chapter reflects a good documentation. The conclusions pointing out the relevance of some obtained results but could be improved by the intention for future studies.
Ø The list of 41 references is consistent with good documentation in the field.
Author Response
We would like to extend our appreciation and thanks to the reviewer for the valuable feedback and suggestions that helped us improve the manuscript's quality. We have addressed the raised comments point by point in the following section and also in the attached file.
- After reading the manuscript entitled Design of liquid-air hybrid cooling garment and its effect on local thermal comfort, authors: Wanwan Wang and Mengmeng Zhao, I could observe that approached subject: the selection and design of personal cooling garments used in hot indoor environment for improve thermal comfort, is usefully.
Author’s reply: Thank you very much for your comment!
- The paper analyzed three liquid-air hybrid cooling garments: aluminum tube fan cooling (AAL), silicone tube fan cooling (SAL), silicone tube fan cooling with inner yarn (YAL), by comparison with a control garment (CON) without the cooling sources.
Author’s reply: Thank you for the comment!
- The obtained results are represented by suggestive diagrams and figures (Figs.10-15). Their interpretations according to the discussions show that the liquid-air cooling garments provided effective convection and conduction of heat dissipation compared to the no cooling state, resulting in a significant decrease in local skin temperature, mean skin temperature, mean torso skin temperature, thermal sensation, and an increase in thermal comfort while having little effect on core temperature.
Author’s reply: Thank you for the comment!
- There are some limitations in the study and I suggest and ask authors to highlight the usefully of this study by comparison with another composition of the Liquid-air Hybrid Cooling Clothing system or the influence of the climatic chamber changes.
Author’s reply: Thank you for the valuable comment! We have highlighted the usefulness of the study both in the abstract and in the conclusions. Since we have no extra temperature sensors to be set in the chamber to monitor the change of the climate chamber, it is difficult to compare with it. And also, comparison with another composition of the Liquid-air Hybrid Cooling Clothing is the further study plan. For the present study stage, we only made these four vests and compared them.
- Title is informative and reflects the contents and the Introduction chapter reflects a good documentation. The conclusions pointing out the relevance of some obtained results but could be improved by the intention for future studies.
Author’s reply: Thank you for the comment! We have revised the conclusions.
6. The list of 41 references is consistent with good documentation in the field.
Author’s reply: Thank you for the comment!
Author Response File: Author Response.docx
Reviewer 3 Report
1. The original contributions need to be much better presented in the last paragraph of section \INTRODUCTION". All improvements, if they are, and new results must be described in this paragraph. The advantages of the work are not discussed in the text. Indeed, introduction needs to enrich the readers with state-of-the-art works, which gives the reader a clear vision of the gap that those studies have not addressed and covered in this study.
2. The Abstract should modified by adding advantages of the proposed method.
3. Check the manuscript carefully for typos and grammatical errors.
4. Please clarify the novelty of this paper with respect to the published paper.
5. The references list is not at all updated with latest developments and publications. I suggest the authors to keep up to date with the relevant literature such as:
“The analysis of fractional-order nonlinear systems of third order KdV and Burgers equations via a novel transform” “-Haar Wavelet Operational Matrix Method for Fractional Relaxation-Oscillation Equations Containing -Caputo Fractional Derivative” “Analytical investigation of fractional-order Cahn–Hilliard and gardner equations using two novel techniques” “Evaluation of time-fractional Fisher’s equations with the help of analytical methods”
6. Please report the CPU running times in given numerical examples.
7. Section Conclusion should be elaborated more in detail.
8. Please improve the quality of given Figures.
9. At the beginning of the numerical results section, authors should present the configuration of the personal computer used to perform the simulation results.
Author Response
We would like to extend our appreciation and thanks to the reviewer for the valuable feedback and suggestions that helped us improve the manuscript's quality. We have addressed the raised comments point by point in the following section and also in the attached file.
1. The original contributions need to be much better presented in the last paragraph of section \INTRODUCTION". All improvements, if they are, and new results must be described in this paragraph. The advantages of the work are not discussed in the text. Indeed, introduction needs to enrich the readers with state-of-the-art works, which gives the reader a clear vision of the gap that those studies have not addressed and covered in this study.
Author’s reply: Thank you for your valuable comment! The introduction has been revised and improved according to your suggestion.
2. The Abstract should modified by adding advantages of the proposed method.
Author’s reply: Thank you for the comment! The advantages of the proposed cooling garments were added in the abstract.
3. Check the manuscript carefully for typos and grammatical errors.
Author’s reply: Thank you for the comment! We have revised these.
4. Please clarify the novelty of this paper with respect to the published paper.
Author’s reply: In the present study, air ventilation was added to the liquid cooling garment and different materials of pipes were used to change the structure of the garment and compared the cooling effect. Compared with previous cooling garments, the cooling garments presented combined both liquid cooling and air cooling. These have been added in last paragraph of the introduction.
5. The references list is not at all updated with latest developments and publications. I suggest the authors to keep up to date with the relevant literature such as: “The analysis of fractional-order nonlinear systems of third order KdV and Burgers equations via a novel transform” “-Haar Wavelet Operational Matrix Method for Fractional Relaxation-Oscillation Equations Containing -Caputo Fractional Derivative” “Analytical investigation of fractional-order Cahn–Hilliard and gardner equations using two novel techniques” “Evaluation of time-fractional Fisher’s equations with the help of analytical methods”
Author’s reply: Thank you very much for the comment! We have checked these references suggested by the reviewer and found that they were not quite relevant to the presented study, so we did not cite these references, but they are very good and valuable for research method and analysis, so we have forwarded these references to our colleagues and graduate students. Besides, we have updated the references and added references published in 2023.
6. Please report the CPU running times in given numerical examples.
Author’s reply: Thank you for the comment! This information was added. In this study, the portable power output voltage was 12v and the capacity was 38400mah which can work continuously for 2 hours.
7. Section Conclusion should be elaborated more in detail.
Author’s reply: Thank you for the comment! The conclusion was revised with more detailed results.
8. Please improve the quality of given Figures.
Author’s reply: Thank you for the comment! The quality of the figures was improved.
9. At the beginning of the numerical results section, authors should present the configuration of the personal computer used to perform the simulation results.
Author’s reply: Thank you for the comment! In the study, we did not perform numerical simulation by computer. The subject trials wearing the different cooling vests were performed in the climate chamber to simulate an indoor working condition in the hot climate.
Author Response File: Author Response.docx
Round 2
Reviewer 1 Report
Well improved!
Reviewer 3 Report
Accept
