4E dynamic analysis of a water-power cogeneration plant integrated with solar parabolic trough collector and absorption chiller. (1st March 2021) - Vazini Modabber, H.
Highlights: Thermodynamic Simulation of Qeshm Cogeneration System and Proposed scenarios. Adding Parabolic Trough Collectors (PTC) was evaluated dynamically in a year. Application of absorption chillier for inlet air cooling was evaluated dynamically. Energy, Exergetic, Exergoeconomic, and Exergoenvironmental (4E) analyses were performed. Abstract: This paper attempts to improve a power-water cogeneration system by combining the existing plant with solar and inlet air cooling systems. The investigations were performed under the climatic conditions of Qeshm Island in Iran. In this regard, the Qeshm power-water cogeneration plant is considered to be improved. This plant consists of two gas turbine units, each with the nominal capacity of 25 megawatts in ISO conditions, two heat recovery steam generators (HRSG), and four MED-TVC desalination policies. Absorption chillier for inlet air cooling of a compressor and parabolic trough collector for solar heating has been considered to integrate with the existing unit. In this regard, different scenarios were examined in each hour in a year. Furthermore, dynamic energy, exergy, exergoeconomic, and exergoenvironmental analyses (4E) have been performed for the base case and proposed scenarios hourly in a year. The high accuracy of the simulation results was confirmed in Thermoflex software and plant data. With the desired changes, the thermal efficiency reaches 68%, and the exergy efficiency increases to about 50%. The economic and environmental shows that the base case's environmental impacts have been reduced by the use of inlet air cooling system and solar heating. Furthermore, dynamic transient 4E evaluations in each hour in a year were determined.