Based on analyzing the difficulties of closed-loop supply chain operation management, considering the new environment as the economic society developing continuously and discussing the feasibility of virtual enterprise, an operation management mode for the closed-loop supply chain based on virtual enterprise is presented in this paper. The organization framework, the operational process, the dy...

Thermal grids are efficient, reliable, and sustainable technologies for satisfying the thermal demands of buildings. The capability to operate at a low temperature allows not only integration heat produced by renewable energy sources but also storage surplus electricity from grid via “power heat” technologies. Besides, in future, consumers expected behave increasingly as “prosumers”, supplying ...

The paper mainly deals with the match of solar refrigeration, i.e., solar/natural gas-driven absorption chiller (SNGDAC), solar vapor compression–absorption integrated refrigeration system with parallel configuration (SVCAIRSPC), and solar absorption-subcooled compression hybrid cooling system (SASCHCS), and building cooling based on the exergoeconomics. Three types of building cooling are cons...

In the refining and petrochemical industrial sector, large amounts of energy are used, so using concept exergy allows a rational use this resource. different exergoeconomics studies applied in plants, parameters interest have been determined to evaluate thermal efficiency, potential for process improvement, irreversibilities produced by interaction between components system operation each one, ...

This paper presents exergy and exergoeconomic analysis and parametric study of a Diesel engine based Combined Heat and Power (CHP) system that produces 277 kW of electricity and 282 kW of heat. For this purpose, the CHP system is first thermodynamically analyzed through energy and exergy. Then cost balances and auxiliary equations are applied to subsystems. The exergoeconomic analysis is based ...

Two process models are used to convert carbon dioxide into methanol. These processes have been extended and improved using Aspen Plus simulator software. Both processes are found in the CO2 correction system. In this machine, the desired synthesis gas is produced in a flexible configuration. At the same time, the conversion of CO2 to hydrogen via a copper-based catalyst ha...

and Tribus, 1962), which is also named exergoeconomics (Bejan et al, 1996) and exergonomics (Yantovskii, 1994). The concept of utility is a central concept in macroeconomics. Utility is also closely related to exergy, and an exergy tax is an example of how exergy could be introduced into macroeconomics. This paper introduces and clarifies important concepts in the development of a sustainable e...