title: The emergy analysis of loop circuit.
abstract: Emergy analysis can analyze the resource utilization and environmental performance of a system. Loop circuit is a common structure in the process industry, but when emergy analysis is carried out to such structure, mistakes such as emergy double counting often occur. To avoid emergy double counting, two types of loop circuit-direct loop circuit and indirect loop circuit-are theoretically distinguished, and the methods to avoid such mistake are proposed. Finally, PVC production and vinyl acetate production are adopted to demonstrate the methods.
authors.affiliation: Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.
authors.forename: Kai
authors.initials: K
authors.lastname: Cao
authors.forename: Xiao
authors.initials: X
authors.lastname: Feng
mesh_terms: D003247:Conservation of Natural Resources / Q000379:methods*; D007221:Industry; D008962:Models, Theoretical