Software for Monitoring the In-Service Efficiency of Hydraulic Pumps
Round 1
Reviewer 1 Report
The authors were presenting the algorithm and the software used to determine the energetic performance and monitor the efficiency of hydraulic pumps operating in miscellaneous industrial applications, particularly in the cases where no permanent monitoring. The software module admits determining the in-service efficiency of the pumps and comparison it to the best efficiency point (BEP) value. The software has been applied and tested in real lab conditions.
The article is interesting, and I have no deep objections to its content.
I found some errors in this manuscript and it should be improved.
Strengths
1. Noteworthy is the very decent graphic layer. The charts are presented clearly, the graph lines are differentiated by color and the points are differentiated by marker symbols. This is a great advantage, as it draws the reader to read the article.
Weak
1. A certain shortcoming of the work is the citation relatively old literature. Only slightly more than 20% of the sources of literature come from the last 3 years. Upgrading/adding the latest sources would certainly increase the value of the entire work.
Noticed errors
1. The first chapter provided an extensive analysis of the state of the issue. However, there was a lack of conclusions from which to draw the research gap, which is also not clearly presented. It would be good to fill it in.
2. In the SI system, the legal unit of volume is m3 and its aliquots like dm3. Since l is a customary unit, it should also not be used in derived units like l/s. This should be corrected throughout the paper.
3. Figure 17 is redundant, as it adds nothing to the article.
Small errors
These errors do not diminish the value of this interesting work, but need to be improved
1. Page 2, paragraph 3. Is: excessive[3].; should be: excessive [3].
2. Page 2, paragraph 5. Is: pumping for 8%[1]; should be: pumping for 8% [1]
3. Page 2, paragraph 10. Is: pumps[18,19].; should be: pumps [18,19].
4. Page 2, paragraph 10. Is: how to act[21].; should be: how to act [21].
5. Page 5, 1 paragraph of chapter nr3. Is: errors[28].; should be: : errors [28].
Author Response
Please see the attachment.
Author Response File: 
Author Response.docx
Reviewer 2 Report
1、The division operation area is based on the best efficiency point of the pump(BEP). What is the basis for dividing (red, yellow and green)? What is the impact of different division range on the pump? How to think about the difference between the scope of the division in this article and the following references?( efficiency-BEP range, reference (1)about:-30%-15%, reference(2)about:-10%-10%, reference (3)about:-20%-20%)
(1) H. Barringer, “How to use reliability engineering principles for business issues,” in Proceedings, YPF Reliability Symposium, 1998.
(2) H. P. Bloch and A. R. Budris, Pump user’s handbook: life extension (ethedition). The Fairmont Press, Inc., 2013.
(3) Z. Lai, Q. Li, A. Zhao, W. Zhou, H. Xu and D. Wu, "Improving Reliability of Pumps in Parallel Pump Systems Using Particle Swam Optimization Approach," in IEEE Access, vol. 8, pp. 58427-58434, 2020.
2、The author should check the relevant variables and the expression of this paper. The variables use the oblique body, and the unit does not need to be oblique. For example, the text and charts of page10-page13, and author are requested to check the full paper.
3、In the sixth part(conclusions and perspectives), the content is not refined enough, the author should try to express the important conclusions of this article as concisely, rather than trying to describe the full paper.
4、The author should supplement the measurement accuracy of the relevant measurement equipment in the fourth part, such as pressure meter, flow meter, etc.
5、In many occasions, the pump is running in frequency conversion, the author seems to only consider the monitoring of the performance of the nominal speed pump, whether it is applicable to the performance of the pump in the frequency conversion state.
6、After the pump runs for a period of time, the pump performance may decline. Based on the original performance model, the algorithm proposed may be invalid. What does the author think of this problem?
Author Response
Please see the attachment.
Author Response File: Author Response.docx
Round 2
Reviewer 2 Report
It can be accepted.
