Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Faculty Publications Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Pal, Narayan Das; Kumar, Nandan; Saxena, Abhishek; Harender; Singh, Desh Bandhu Title A name given to the resource Characteristic Equation Development for Conical Active Solar Still With/Without Photovoltaic Thermal for Sustainable Solution to Clean Water Scarcity: A Comparative Study Date A point or period of time associated with an event in the lifecycle of the resource 01-01-2026 Source A related resource from which the described resource is derived Journal of Solar Energy Engineering ;Volume;148;Issue;3;Article No.;31004; Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1115/1.4070979" target="_blank" rel="noreferrer noopener">https://doi.org/10.1115/1.4070979</a> <br /><br /><a href="https://www.scopus.com/pages/publications/105031770492?origin=resultslist" target="_blank" rel="noreferrer noopener">https://www.scopus.com/pages/publications/105031770492?origin=resultslist</a> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Pal N.D., Department of Mechanical Engineering, Graphic Era (Deemed to be University), Uttarakhand, Dehradun, 248002, India; Kumar N., Department of Mechanical Engineering, Shiv Nadar Institution of Eminence, Deemed to be University, Delhi NCR, NH-91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh, 201314, India; Saxena A., Department of Mechanical Engineering, School of Engineering, Dev Bhoomi Uttarakh and University, Uttarakhand, Dehradun, 248007, India; Harender, Department of Mechanical Engineering, Shiv Nadar Institution of Eminence, Deemed to be University, Delhi NCR, NH-91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh, 201314, India; Singh D.B., Department of Mechanical Engineering, Graphic Era (Deemed to be University), Uttarakhand, Dehradun, 248002, India, Centre of Energy Research, Graphic Era (Deemed to be University), Uttarakhand, Dehradun, 248002, India Description An account of the resource To address global water scarcity and promote sustainable freshwater solutions, a novel solar distillation system has been developed and numerically analyzed. Three cases namely (a) conical solar still (CSS) consisting of partially covered photovoltaic thermal (PVT) flat plate collectors (FPCs), (b) CSS with fully covered PVT-FPCs, and (c) CSS containing FPCs have been considered. Detailed thermal models for different cases have been developed, and the results are compared. An experimental validation of case (a) has been presented. The root mean square percentage deviation for water temperature, condensing cover temperature, and yield is obtained as 5.30%, 4.90%, and 9.11%, respectively. The conical geometry of the proposed system increases the condensing surface area and reduces the shading effect, improving distillation performance. Results show that the maximum collector outlet and basin water temperatures reached approximately 99.8 C and 95.2 C, respectively, at the mass flow rate of 0.04 kg/s and N = 8. Among the configurations, case (c) demonstrated the best performance, achieving a daily distillate yield of 6.44 kg and a maximum instantaneous efficiency of 88.28%. However, case (c) is not self-sustainable. In comparison, cases (a) and (b) recorded yields of 4.70 kg and 3.33 kg and maximum instantaneous efficiency of 79.76% and 25.32%, respectively. The suitability of cases (a) and (b) depends on the requirements of users. Case (a) is suitable when comparatively low electrical output and high yield are required, whereas case (b) is suitable when high electrical output and low yield are required. Copyright 2026 by ASME. Subject The topic of the resource clean energy; collector; conical solar still; efficiency; heat transfer; photovoltaics; PVT collector; renewable; renewable energy; solar; solar distillation; sustainability; thermal modeling; thermodynamics; water scarcity Publisher An entity responsible for making the resource available American Society of Mechanical Engineers (ASME) Relation A related resource ISSN: 1996231; CODEN: JSEED Language A language of the resource English Type The nature or genre of the resource Article Rights Information about rights held in and over the resource Restricted Access; Hardcopy may be available in the library Format The file format, physical medium, or dimensions of the resource online