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Numerous coal gasification studies have been found in the literature those employed various kinds of gasifying agents such as steam and carbon dioxide. These studies are featured with wide variations in the parametric conditions and the usage of equipments. Steam is frequently employed as a gasifying agent, however, in several studies carbon dioxide has also been used as a gasifying agent either pure...
In this paper, the primary energy consumption and the economic viability of a combined heating, cooling and power (CHCP) system are derived. The focus is on small-scale applications in the range below 100 kW H /70 kW C /58 kW el . CHCP is discussed between the boundaries of combined heating and power (CHP) and combined cooling and power (CCP) using a lumped parameter model...
In this paper, thermoeconomic optimization and exergy analysis are applied to a CO 2 /NH 3 cascade refrigeration cycle. Cooling capacity, ambient temperature and cold space temperature are constraints of the optimization procedure. Four parameters including condensing temperature of ammonia, evaporating temperature of carbon dioxide, condensing temperature of carbon dioxide and temperature...
In this paper the authors compare monoethanolamine (MEA) to aqueous ammonia (AA) and a solvent mixture of aqueous ammonia and ethanol (EAA) with respect to their post-combustion CO 2 capture performance and their environmental impact. Simulation of all processes was carried out with Aspen Plus ® and compared to experimental results for CO 2 scrubbing with ammonia. Of special...
This study examines the impact of oil consumption on the economic growth of the MENA countries during the period 1980–2009. The panel model is employed in this study. Based on the cointegration test results, it was found that CO 2 emission, and oil consumption has a long run relationship with economic growth. Moreover, there is also a bi-directional Granger causality between oil consumption,...
In this paper, two new CO 2 cascade refrigeration cycles are proposed and analyzed. In both these cycles the top cycle is an ejector-expansion transcritical cycle and the bottom cycle is a sub-critical CO 2 cycle. In one of these proposed cycles the waste heat from the gas cooler is utilized to drive a supercritical CO 2 power cycle making the plant a combination of three cycles...
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