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Abstract
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The simultaneous design of units and the integration of processes reduce the amount of required
equipment and energy consumption. Types of research in recent years have turned their attention to
improving the efficiency of thermal and heat recovery systems. This paper aims to develop an integrated
structure for simultaneous generation of power and liquefaction of carbon dioxide. The hybrid system
consists of four sections: oxy-fuel power plant for power generation with CO2 capture, pure oxygen
production using the air separation unit, carbon dioxide liquefaction system using an absorption
refrigeration cycle and heat supply using solar dish collectors. The integrated design has the capacity of
producing 26.27 kg/s of liquid carbon dioxide and 179 MW of power. Exergy analysis shows that the
maximum exergy destruction belongs to the distillation towers at 24.73%, and the minimum exergy
destruction is for air coolers at 0.113% compared to other equipment. Accordingly, the total exergy ef-
ficiency of the whole integrated structure is 60.74% and the total exergy destruction is 416 MW. The
economic analysis of the integrated structure shows that the period of return is 3.3 years, and the prime
cost of the product is 3.04 cents/kWh. Furthermore, by using sensitivity analysis the important and
effective parameters of the developed integrated structure was investigated.
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