Name: MARCELO AIOLFI BARONE
Type: PhD thesis
Publication date: 22/12/2021
Advisor:
Name |
Role |
|---|---|
| JOSÉ JOAQUIM CONCEIÇÃO SOARES SANTOS | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| JOSÉ JOAQUIM CONCEIÇÃO SOARES SANTOS | Advisor * |
| ROGÉRIO RAMOS | Internal Examiner * |
Summary: Thermoeconomics combines concepts of thermodynamics with economics to provide the system analyst information not available through conventional analysis.
Regardless of the thermoeconomic analysis, the cost formation process is necessary, besides the definition of fuel and product for each subsystem.
Some factors can interfere, making it more arbitrary and less systematized. These factors are fictitious units, dissipative equipment, and waste treatment. The thesis objective is a proposal for the generalized systematization of thermoeconomic modeling.
The comprehensive diagram eliminated arbitrariness related to the fictitious units present in the productive diagram, given that it uses physical flows in the interconnections of subsystems. In addition, the diagram shows the physical and productive flows, allowing the cost calculation of both flows.
Regarding dissipative equipment and waste treatment, exergy breakdown is the systematic solution.
Consequently, both the comprehensive diagram and the exergy disaggregation increase the number of flows to be analyzed, then increase the number of cost-balance equations, making the process complex. To reduce the complexity, one solution is to apply the technique called localized physical exergy disaggregation, which performs the disaggregation of physical exergy only on the desired device.
Four case studies were carried out to discuss the factors that affect the systematization of the cost formation process.
As a result, the localized exergy disaggregation reduces the complexity, however, the Model E with residual did not allow the waste cost allocation systematically, so it did not resolve arbitrariness or systematization. The best solution was the comprehensive diagram with the disaggregation of physical exergy in Models H\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\&S, UFS, and UFS+, which showed coherent exergy costs, as well as a systematic cost formation process, regardless of the existence of dissipative equipment or waste
