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Abstract
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Global energy consumption, in various forms, is rapidly increasing, owing to population and economic growth, and as a consequence energy-related CO2 emissions are dramatically rising. Hence, energy demand and mitigation of CO2 emissions are in urgent need of being dealt with. In this perspective paper, a novel approach, combining a system of simultaneous power cooling and fresh water is conducted an investigation by the exergetic and thermoeconomic approaches. The conventional energy storage methods are not able to perform under long-term condition as well as the possibility of transferring it to the considered location can be exorbitant. One of the leading methods for renewable energy storage is the simultaneous generation of liquid carbon dioxide and LNG using solar energy and heat loss. This integrated structure is composed of four sub-systems: Organic Rankine cycle system for power generation using parabolic trough collectors, using a mixture of ammonia and water as a working fluid in refrigeration cycle to produce liquefied natural gas (LNG) and liquid CO2, carbon dioxide capture process, multiple-effect distillation desalination. This hybrid system enjoys a capacity to produce 14.5 ton/h of LNG, 1.693 ton/h of desalinated water, and 2.611 ton/h of liquid CO2. The results of exergy analysis demonstrate that overall exergy efficiency of the process is 88.97%, and the component-based assessments also show that the highest exergy destruction is associated with towers (the average proportion of 39.23%), whilst the lowest exergy destruction ration is quantified for valves and drums (0.1352%). The economic appraisal results of the hybrid structure reveals that duration of return is 6 years, and the prime cost of the product is 24.2 cents/kg LNG. Moreover, sensitivity analysis is intended to discern the influential parameters of the developed hybrid arrangement.
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