TY - JOUR T1 - Estimation and analysis of exergy loss and performance evaluation of marine freshwater generating system AU - Pal, Jitendra Singh AU - Sapali, S. N. AU - Deshmukh, Prashant PY - 2024 DA - September JF - Journal of Thermal Engineering PB - Yildiz Technical University WT - DergiPark SN - 2148-7847 SP - 1266 EP - 1274 VL - 10 IS - 5 LA - en AB - This paper provides the groundwork for the most efficient design of freshwater generating systems that take advantage of waste heat from the main engines. In the desalination process, freshwater generators, whether in the form of shell and tube-type or plate-type, are employed. Merchant vessels primarily utilize submerged shell and tube-type evaporators to generate fresh water. The foundation for comprehending separation processes, energetics, and economics lies in the quantitative interpretation of the second law of thermodynamics, with a specific focus on exergy and its dissipation. This research suggests employing exergy analysis to utilize waste heat as a valuable resource in a single-effect desalination process to meet freshwater needs, considering practical aspects. The study involves analyzing a freshwater generator of the Shell and tube type situated at the Tolani Maritime Institute in Pune, India. Thermal properties are calculated and visually represented through a flow diagram using a C++ program. The assessment of exergy unveils the extent and distribution of unattainable work within a freshwater generator employing a shell and tube design, particularly concentrated in its key components: the evaporator, condenser, and brine section. These findings are contrasted with those from a Plate Type Heat Exchanger (PTHE) freshwater generator. The rate of exergy destruction in Plate Type Heat Exchanger freshwater generators is 29.33%, whereas in shell and tube-type freshwater generators, it is higher at 44.88%. KW - Evaporator KW - Exergy Efficiency KW - Exergy Loss KW - Plate Type Heat Exchanger KW - Waste Heat CR - [1] Ibrahim S, Al-Mutaz I, Wazeer I. Development of a steady-state mathematical model for MEE-TVC desalination plant. Desalination 2014;351:9–18. [CrossRef] CR - [2] Millero FJ, Poisson A. International one-atmosphere equation of state of seawater. Deep Sea Res A Oceanogr Res Pap 1981;28:625–629. [CrossRef] CR - [3] Kahraman N, Cengel YA, Wood B, Çerçi Y. Exergy analysis of a combined RO, NF, and EDR desalination plant. Desalination 2005;171:217–232. [CrossRef] CR - [4] Kahraman N, Cengel YA. Exergy analysis of an MSF distillation plant. Energy Conver Manage 2005;46:2625–2636. [CrossRef] CR - [5] Nafey AS, Fath HES, Mobrouk A. Exergy and thermoeconomic evaluation of MSF process using a new visual package. Desalination 2006;201:224–240. [CrossRef] CR - [6] Sharqawy MH, Zubair SM, Lienhard VJH. Formulation of seawater flow exergy using accurate thermodynamic data. Proc ASME Int Mech Engineer Congr Expo 2010;2010:675–682. [CrossRef] CR - [7] Sharqawy MH, Zubair SM, Lienhard V JH. Second law analysis of reverse osmosis desalination plants: An alternative design using pressure retarded osmosis. Energy 2011;36:6617–6626. [CrossRef] CR - [8] Sharqawy MH, Lienhard VJH, Zubair SM. On exergy calculations of seawater with applications in desalination systems. Int J Therm Sci 2011;50:187–196. [CrossRef] CR - [9] International Association for the Properties of Water and Steam. Release on the IAPWS Formulation 2008 for the Thermodynamic Properties of Seawater. Available at: https://www.teos-10.org/pubs/IAPWS-08.pdf. Accessed August 2, 2024. CR - [10] Hosseini SR, Amidpour M, Behbahaninia A. Thermoeconomic analysis with reliability consideration of a combined power and multi-stage flash desalination plant. Desalination 2011;278:424–433. [CrossRef] CR - [11] Gude VG. Exergy evaluation of desalination processes. Chem Engineer 2018;2:28. [CrossRef] CR - [12] Choudhari CS, Sapali SN. Testing of environment-friendly refrigerant R290 for water cooler application. Int J Engineer 2018;31:157–163. [CrossRef] CR - [13] Shikalgar ND, Sapali SN. Energy and exergy analysis of a domestic refrigerator: Approaching a sustainable refrigerator. J Therm Engineer 2019;5:469–481. [CrossRef] CR - [14] Koroglu T, Sogut OS. Advanced exergy analysis of an organic Rankine cycle waste heat recovery system of a marine power plant. J Therm Engineer 2016;3:1136–1148. [CrossRef] CR - [15] Rawabawale N, Sapali SN. Exergy analysis of the cross current cooling tower. J Therm Engineer 2020;6:499–510. [CrossRef] CR - [16] Yuksel O, Gulmez Y, Konur O, Aykut S, Erdogan KA, Colpan CO. Performance assessment of a marine freshwater generator through exergetic optimization. J Clean Prod 2019;219:326–335. [CrossRef] CR - [17] Solanki A, Pal Y. A comprehensive review to study and implement solar energy in dairy industries. J Therm Engineer 2021;7:1216–1238. [CrossRef] CR - [18] Ahern JE. The exergy method of energy systems analysis. New Jersey, US: John Wiley & Sons; 1980. pp. 102–106. CR - [19] Kotas TJ. The Exergy Method of Thermal Plant Analysis. London, UK: Exergon Publishing Company; 2012. pp. 33–44. CR - [20] Mustafa I, AI Ghamdi A. Exergy analysis of thermal seawater desalination – A case study. In: Gude VG, ed. Renewable Energy Powered Desalination Handbook. Oxford, Butterworth-Heinemann; 2018. pp. 491–515. [CrossRef] CR - [21] Li KW. Applied Thermodynamics: Availability Method and Energy Conversion. New York: Taylor & Francis; 1989. CR - [22] Hammond GP. Engineering sustainability: Thermodynamics, energy systems and the environment. In: Winnett A, ed. Towards an Environment Research Agenda. London: Palgrave Macmillan; 2004. [CrossRef] UR - https://dergipark.org.tr/en/pub/thermal/article/1546429 L1 - https://dergipark.org.tr/en/download/article-file/4201473 ER -