Table 3.

Step of bibliometric analysis.

Steps	Programs/databases	Description
Data collection	Scopus database	Timespan: 2010–2020 with keywords (“solar AND organic Rankine cycle”). 1249 documents related to the solar applications on organic Rankine cycle, consist of 764 journal articles which will be further analysed.
Identification, analysis and mapping	VOSviewer, MS Excel	764 documents are identified for bibliometric coupling analysis automatically. Qualitative analysis of bibliometric information involving; Co-occurrence keywords, Co-authorship of affiliations and country, Co-citation of cited references.
Research topic interpretation	Qualitative approach	The authors reviewed the titles, abstracts, keywords and analysis of each research topic.