4E analysis of a solar, wind and waste heat-driven CCHP system: A case study for a cruise ship

Abstract

One of the most advanced technologies for meeting all cooling, heating, and electrical demands is Combined Cooling Heating and Power (CCHP) systems. This paper proposes using PV panels, wind turbines, and CCHP system based on an Organic Rankine Cycle integrated absorption chiller, for a cruise ship MS Birka Stockholm. A part of the electricity demand is provided by three wind turbines and PV panels, and another part is generated by the CCHP system. The proposed CCHP system works by recovering heat by three main engines in summer and mid-season and four main engines in winter. It’s important to mention that in actual condition the ship is working with eight engines. Decreasing the number of engines and using renewable energies could be a very alluring issue in the transportation systems. Energy, Exergy, Exergoeconomic, and exergoenvironmental (4E) analysis is done for the system and also components with the highest exergy destruction and cost rate and environmental effects are recognized. 4E analysis could give the researchers opportunity to compare their proposed systems results, that is never done in this field. Mentioned analysis are divided into three parts, including winter, mid-season and summer. For the summer, energy and exergy efficiencies are 65% and 40.13%, respectively. The coefficient of performance (COP) is also calculated 0.706. For mid-season, thermal efficiency is calculated 97.4% and exergy efficiency is calculated 24.31%. Therefore, for winter thermal efficiency is calculated 98% and exergy efficiency is calculated 9.3%. The cost associated with total exergy destruction is 1,193,099 €/year, and the total investment cost of the system is 179,592 €/year. The total environmental impacts associated with the exergy destruction and the total value of the component-related environmental impact of the system (Ẏ) were calculated as 2,479,713 mpts/year and 864,627mpts/year, respectively.