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Energy and exergy performance assessment of a novel solar-based integrated system with hydrogen production

DOI:10.1016/j.ijhydene.2018.10.118 期刊:International Journal of Hydrogen Energy 出版年份:2018 更新时间:2025-09-09 09:28:46
摘要: In this study, a new solar power assisted multigeneration system designed and thermodynamically analyzed. In this system, it is designed to perform heating, cooling, drying, hydrogen and power generation with a single energy input. The proposed study consists of seven sub-parts which are namely parabolic dish solar collector, Rankine cycle, organic Rankine cycle, PEM-electrolyzer, double effect absorption cooling, dryer and heat pump. The effects of varying reference temperature, solar irradiation, input and output pressure of high-pressure turbine and pinch point temperature heat recovery steam generator are investigated on the energetic and exergetic performance of integration system. Thermodynamic analysis result outputs show that the energy and exergy performance of overall study are computed as 48.19% and 43.57%, respectively. Moreover, the highest rate of irreversibility has the parabolic dish collector with 24,750 kW, while the lowest rate of irreversibility is calculated as 5745 kW in dryer. In addition, the main contribution of this study is that the solar-assisted multi-generation systems have good potential in terms of energy and exergy efficiency.
作者: Fatih Yilmaz,Murat Ozturk,Resat Selbas
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To propose a novel solar power assisted multigeneration system, consisting of the concentrating collector, Rankine cycle with high and low pressure turbines, ORC with two turbines, PEM electrolyzer, DEAC process, dryer and heat pump. The energetic and exergetic studies are conducted to provide a better investigating of integrated system efficiency.

The thermodynamic analysis shows that the solar-assisted multi-generation systems have good potential in terms of energy and exergy efficiency. The highest rate of irreversibility is in the parabolic dish collector, and the lowest is in the dryer. The energy and exergy performance of the overall system are 48.19% and 43.57%, respectively.

The study assumes steady-state operating conditions, negligible kinetic and gravitational potential energy changes, and neglects heat losses and pressure drops in the pipes. The isentropic efficiencies of turbines and pumps are assumed, and the energetic performance of PEM electrolyzer is accepted as 0.60.

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