An Evaluation of the Luminous Performance of a School Environment Integrating Artificial Lighting and Daylight
Round 1
Reviewer 1 Report (Previous Reviewer 1)
Comments and Suggestions for AuthorsThank you for the updated version: Most of the comments have been resolved:
The following concern remains to be addressed:
(a)The paper still lacks novelty when compared with the published research on the lighting design.
New comment:
(1) Please refer to: 'due to switching “of” S2 and S3' should be 'due to switching “off” S1, S2 and S3'
Comments on the Quality of English LanguageThank you for the updating the earlier comments.
Author Response
Dear Reviewer,
Thank you very much for the accurate review of the text, which greatly contributed to reaching the level required for the article to be published. The last concern about : 'due to switching “of” S2 and S3' should be 'due to switching “off” S1, S2 and S3', was made in final version of text.
Once again, we would like to thank you for your review, which provided a great improvement in the foundation and analysis contained in the article.
Reviewer 2 Report (Previous Reviewer 3)
Comments and Suggestions for AuthorsRevised version of the manuscipt can be considered as "ready for publication".
Author Response
Dear Reviewer,
Thank you very much for the accurate review of the text, which greatly contributed to reaching the level required for the article to be published.
Reviewer 3 Report (Previous Reviewer 4)
Comments and Suggestions for AuthorsThe authors have addressed all my issues.
Author Response
Dear Reviewer,
Thank you very much for the accurate review of the text, which greatly contributed to reaching the level required for the article to be published.
This manuscript is a resubmission of an earlier submission. The following is a list of the peer review reports and author responses from that submission.
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsPaper Title: Evaluation of The Luminous Performance of a School Environment Integrating Artificial Lighting and Daylight
The present research investigates the sustainable energy performance of the Federal University of São Carlos buildings of Brazil adhering to Brazilian standard NBR ISO/CIE 8995-1/2013 DIALux program. Artificial lighting consisting of lamps of varying temperatures, colour rendering index and luminous performance has been studied to provide adequate lighting in school while keeping the various objectives like health and well-being of users, towards engaging higher productivity. .
The research recommends an improvement in the existing lighting system for the artificial lighting system with LED luminaires integrated with daylight along with a manual control device to save 65% approximately in comparison to the existing artificial lighting system in the school room.
General comments:
1) Please refer to line no. 72:" LED lamp (Light Emitting Diode) has " should be " Light Emitting Diode (LED) lamps have… ".
2) Please refer to line no. 83: “….software version called DIALux evo’….” should be referred to throughout.
3) Please refer to line no. 84: “CIE (Commission Internationale de l'Eclairage): should be “…..Commission Internationale de l'Eclairage (CIE)…” and others
4) Please refer to line no. 117: “…through the following steps: construction (I),…” should be (I) construction …The Roman number placed at the last should be at the beginning of each step.
5) Please refer to Table 5. Luminaries power (W) is not the same in the existing and improved arrangement, hence may lead to saving. How the illuminance required was derived is also unclear. Authors should provide limitations and assumptions while arriving at saving %.
6) Table 4. Results obtained in the simulation of the different arrangements. Turning ON and OFF is theoretically possible. In actual practice, the lights are hardly switched off during the daytime.
7) The introduction section focuses more on compliance. It should be revised and include the need for novel sustainable energy-saving lighting system design using a novel methodology based on IoT, Cloud Computing or Big data.
8) The paper is based on the open-source software “DIALux evo” for deriving energy-saving systems, however, it does not provide any novelty in lighting design. There are several researches available for efficient energy-saving lighting systems using IoT (Jang et al., 2012), self-adaptive weighted data fusion algorithms (Sunh and Lin, 2013), involving user satisfaction etc.
9) Please refer to Figure 6. Electricity daily power consumption by time of classroom use. The colour legend is missing.
10) Authors need to justify the research contribution and provide sound suggestions for future research based on wi-fi-enabled technologies.
Please refer to lines 167 to 173: “The luminaries and …. and operating switches (turn on off the luminaries).” The paragraph is poorly written and may be revised to provide clarity.
Comments on the Quality of English LanguageThe manuscript has several typos and grammatical mistakes hence careful editing is needed.
1) Please refer to the abstract “…São Carlos | Brazil is been…“ should be “….São Carlos, Brazil has been…“.
2) Please refer to line no. 39: “… established in 1985, Law nº 10.295/2001 [2].” should be “… established in 1985, Law no. 10.295/2001 [2].” Similarly, “Law nº 9.991/2000 [3].’
3) Please refer to line no. 54: “by avoid direct sunrays’ should be “by avoiding direct sun rays’
4) Please refer to line no. 60: " artificial lightning (electrical lamps), ' should be " artificial lighting (electrical lamps), "
5) Please refer to line no. 83: “Nowadays, the company make a free access…’ should be “Nowadays, the company makes a free access…’
6) Please refer to line no. 104: “AT8 e AT9” should be “AT8 and AT9”.
7) Please refer to line no. 379:".. the system luminous performance ..." should be ".. the system luminous performance ..."
8) Several phrases/ names are capitalized for instance North may be north
9) Please refer to line no. 185: “…can be greater than or equal to 0.60“ should be uniformity ≥ 0.60’.
10) Please refer to line no.239 "The results were organized into two topics. “ should be “…….two sub-sections).
Reviewer 2 Report
Comments and Suggestions for AuthorsThis manuscript presents the results of evaluating an existing artificial lighting system in a classroom and improvements that may be achieved using natural light. The evaluation was performed using the DIALux Evo software. Based on simulation results, a new lighting system associated with lighting control measures is proposed to improve the luminous performance and quality of lighting with less electrical energy consumption for lighting the classroom.
After reading the manuscript, this reviewer has the following doubts/concerns/questions:
1) On page 3, lines 111-113, the sentence "Alves Netto [8] had already studied the classroom ... during equinoxes." needs to be clarified.
2) On page 3, lines 114-115, the authors state, "These data were considered as input data in DIALux as the contribution of daylighting incidence inside the classroom.". How is this implemented? How are the variations in daylighting considered?
3) Page 4 - Light stage (II):
a) the authors state that: "Common hours of use: from 08:00 a.m. to 12:00 p.m., from 02:00 p.m. to 06:00 p.m., from Monday to Friday, for ten months a year, totaling an average usage of 1,760 hours per year.". Is the light system always on during such periods? Why?
b) the authors also state, "For the simulation conditions, it was considered that the winter solstice is the period with the lowest solar incidence, so the date of June 22nd was considered to evaluate the least favorable scenario in relation to daylight.". Why is this important? Did the authors develop the study considering the year's most minor favourable conditions?
c) As they state, the authors did not use information about the luminaires that are actually installed. To what extent can this situation affect the results obtained? It is essential to highlight that, according to the values mentioned by the authors, the existing luminaires are equipped with two lamps of 32 W each, totalling 64 W. The luminaires adopted to represent the existing ones have a power of 71 W, approximately 11% more. Note that this is a significant difference.
d) Additionally, related to the previous paragraph, the authors do not mention the auxiliary systems in each type of luminaire (the one installed and the one used to represent it), namely the existence or absence of ballast and its respective power. It should be noted that the power of the ballasts can be significant compared to the power of the lamps. The eventual consideration of ballasts with reduced or extra-reduced losses in one situation and not in another can lead to critical analysis errors. Authors must clarify these types of cases.
4) The authors do not refer to the kind of light distribution used. Is it direct? Indirectd? Diffuse?
5) The usefulness of section 3.1 is not understood. What is the goal? How does this relate to reality? How can a short time situation provide relevant information for careful analysis?
6) On page 7 the authors refer that: "... color temperature of 3,000 K." Is this so? This color temperature translates into a warm colour unsuitable for work/study places. I would be expecting a colour temperature closer to 4000 K.
7) The case study refers to a didactic situation or, at most, a practical lighting design application. In other words, the scientific novelty this manuscript intends to bring is unclear.
Comments on the Quality of English LanguageEnglish needs some improvements.
Reviewer 3 Report
Comments and Suggestions for AuthorsThe manusccipt appears to be the well done report of a students semesterproject showing an example for the appllication of software tool.
There is hardly to see any novelty. or take home message begond how tonlite this specific room.
Comments on the Quality of English Languagemostly ok
Reviewer 4 Report
Comments and Suggestions for Authors- I think the conclusion could be a whole paragraph instead of too many paragraphs
- The related works in this paper is insufficient. I think the authors could highlight this paper’s contributions
- Some references are recommended to cite in this paper:
- TGRS22-Partial domain adaptation for scene classification from remote sensing imagery
- EAB17-Assessment of natural lighting performance and visual comfort of educational architecture in Southern Europe: The case of typical educational school premises in Cyprus
- Buildings17-A review of daylighting strategies in schools: state of the art and expected future trends.
