Review Reports
by
- Timothy Frank 1,*,
- Josh Aldred 1 and
- Sophie Boulware 1
- et al.
Reviewer 1: Zhen Zhang Reviewer 2: Anonymous Reviewer 3: Hui Wang
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsThis study examines how environmental factors affect the rate of HVAC system upgrades at 49 Air Force and Space Force bases in the United States. The results presented in this paper provide some insights into HVAC asset management, and the methods used can be applied to other infrastructure systems. This article is well written and interesting, but there are still some unclear areas, and the study methodology is not particularly clear, such as how random forests determine the importance of each influencing factor. The authors only analyzed the influence of the external environment, but did not take into account human factors, such as machine utilization, maintenance rates, and so on.
Specific comments：
（1）HVAC is not mentioned in the introduction section, it is recommended to mention HVAC from infrastructure.
（2）Lines 32-34：The investment gap? I don't particularly understand.
（3）Lines 169-161: References should be given.
（4）Table 2: There is no 8 in the Climate Zone.
（5）Line 244: What does CI subscript 1 mean?
（6）That's a little much in conclusion section.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsAuthor has provided some insights into HVAC asset management and the methodology used can be applied to other infrastructure systems. Author also has explored how environmental factors influenced degradation rates of HVAC systems at Air Force and Space Force bases across the USA. However, Author should be included using random forest for predictive modeling and study could also be expanded geographically to increase the feature space of the environmental variables.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
Comments and Suggestions for Authors1. The description in the introduction section is too brief, and the description of the relationship between environmental factors and infrastructure systems is not detailed enough. It is recommended to include some research and references from others in this section to support the description.
2. The description of the background is scattered, and it is necessary to highlight the research focus, innovation points, and current research difficulties.
3. The literature review section is too brief. Please add descriptions of other studies and cite more literature.
4. There are too many conclusions, please streamline the number of conclusions and merge the relevant conclusions.
5. To make the conclusion section appear less bulky. The outlook and future work of this study (lines 591 to 601) can be included in Part 7.
Comments on the Quality of English Language1. The description in the introduction section is too brief, and the description of the relationship between environmental factors and infrastructure systems is not detailed enough. It is recommended to include some research and references from others in this section to support the description.
2. The description of the background is scattered, and it is necessary to highlight the research focus, innovation points, and current research difficulties.
3. The literature review section is too brief. Please add descriptions of other studies and cite more literature.
4. There are too many conclusions, please streamline the number of conclusions and merge the relevant conclusions.
5. To make the conclusion section appear less bulky. The outlook and future work of this study (lines 591 to 601) can be included in Part 7.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf