Two Decades of Life Cycle Sustainability Assessment of Solid Oxide Fuel Cells (SOFCs): A Review

No.1

Comment Reviewer 1

Correction

Line

1

In abstract: the sentences
"The result indicated that, SOFC has better implication on environmental performance as well as least cost-effective option as economic performance mostly the top criterion in the process of decision-making. The review revealed several gaps in the literature, several studies assessed LCA using particular or very few indicators, the few indicators may not sufficiently assess the environmental impact of SOFC Further, limited study shed the light on the association of SLC and SOFC. " are difficult to understand.

The result indicated that, SOFC has better implication on environmental performance.  as well as a least cost-effective option for commercially competitive purposes. The review revealed several gaps in the literature, several studies assessed LCA using particular or very few indicators, the few indicators may not sufficiently assess the environmental impact of SOFC Further, limited study shed the light on the association of SLC and SOFC

2

Line 364, what is LCIA?

Added life cycle impact assessment (LCIA)

348

3

Starting from where, Table 3 was discussed?

Added, as shown in Table 3, [7] and [11] involve the most number of impact categories 17-midpoint indicators

(371-372)

4

In conclusion: the sentence
"The best formula for the environmental assessment impact methodology is to multiple methods to obtain more accurate results." is difficult to understand.

The best formula for the environmental assessment impact is to integrate more than one methodology to obtain high accurate results.

566+567

No.1

Comment Reviewer 2

Correction

Line

1

From 1999 to 2018, 55 articles focused on 84 LCA usage on SOFCs [15]. Which source did you use to mention the number of articles published? Kindly mention the details about it first.

[15] conducted a review study focused on LCA usage on SOFCs consisting of 55 articles during period from 1999 to 2018.

[15] = (Tanveer et al., 2021)

2

Line 98---SO2 and NOX, use x as a Subscripts. Kindly check it throughout the manuscript. E-g CO2 on page 410 etc

Modified to NOX and CO2

98 and 410

3

 Improve the quality of Figures 2 and 3

Improved

4

The authors should provide more of their perspectives.

1-       As shown in Table 3, [8] and [11] reflect the most number of impact categories including 17-midpoint indicators.

2-       This study observed that Eco-indicators 99 method had not been used since 2013 for arti-cles with more than singular indicators. In addition. IPCC and CED have not been applied individually in previous studies.

3-       On the other hand, the recommended payback period for commercially competitive purposes is 3-5 years.

4-       Apart from that, extensive geographical distribution focused on Europe or developed countries. Whist, developing countries were found to be very limited addressed. Lastly, prior studies cover a widespread manufacturing and industrial sector (e.g. transportation, agriculture, oil and gas).

5-       On the other hand, some sectors, such as construction and services, particularly gov-ernmental sectors, are desirable to be addressed

(371- 372)

(438-440)

(493-494)

(581-585)

(586-587)

5

This is a review paper, not a book chapter. Therefore, there should be only one Introduction. Try to combine sections 1-3 and rearrange the text accordingly. Section 4 should not be results and discussion, as you are collecting data from the literature. You can improvise the headings throughout the manuscript.

Done

No.1

Comment Reviewer 3

Correction

Line

1

Reduce the length of the abstract if possible.

The aim of this study is to draw a comprehensive image about the relationship between Life Cycle Sustainability Assessment (LCSA) impact using the three dimensions namely, “life cycle costing (LCC), life cycle assessment (LCA), and social life cycle (SLC)” and Solid Oxide Fuel Cells (SOFC). By systematically reviewing and analyzing 43 articles from 17 different peer reviewed journals between 1998 and 2021. The analysis shows that, SOFCs related application may substantially contribute to a cleaner energy sector in future via high level temperature power generation. The result indicated that, SOFC has better implication on environmental performance, as well as a least cost-effective option for commercially competitive purposes. The review revealed several gaps in the literature, several studies assessed LCA using particular or very few indicators, the few indicators may not sufficiently assess the environmental impact of SOFC. Further, limited study shed the light on the association of SLC and SOFC. Future LCSA studies ought to adopt dynamic criteria, especially environmental impact analysis considering social and economic factors, to enable a feasible results comparison. Future studies also should attempt to conduct more studies in developing countries targeting various industrial sectors

2

Discuss about the mentioned reference 

Narasipuram,  R.P.  (2021)  ‘Analysis,  identification  and  design  of  robust  control  techniques  for  ultra-lift  Luo   DC-DC   converter   powered   by   fuel   cell’,   Int.   J.   Computer   Aided   Engineering and Technology, Vol. 14, No. 1, pp.102–129.

Please refer to line 43

43