Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EVALUATION OF COMMERCIAL ORGANIC FLUIDS FOR WASTE HEAT RECOVERY
Submission Author:
Edwin Santiago Rios Escalante , SP , Peru
Co-Authors:
Edwin Santiago Rios Escalante, Eliana Vieira Canettieri, João Carvalho
Presenter: Edwin Santiago Rios Escalante
doi://10.26678/ABCM.ENCIT2018.CIT18-0093
Abstract
Is not novel our strong fossil fuels dependence and the atmospheric pollution caused by burning them in the industrial systems. Therefore, the maximum utilization of energy obtained from this sources is very important. An option is the use of waste heat recovery systems. In this paper was presented the analysis of a simple organic Rankine Cycle (ORC) operating with five commercial refrigerants with low normal boiling point commonly used in refrigeration systems: R12, R22, R124, R134a and R152a with boiling points ranging from -40.81℃ to -11.96℃, to convert waste energy to power from low-grade heat sources. These organic fluids were analyzed and compared, in order to determine with which of them the lowest components size and the best performance can be obtained. The evaluation was performed using a combined first and second law of thermodynamics by varying certain system operating parameters. The results showed that, the greater thermal efficiency by R124 was obtained. Additionally, this organic fluid has higher both boiling point and molecular weight. The devices sizes of the ORC are smaller for all the organic fluids in comparison with the water.
Keywords
Organic Rankine Cycle, Refrigerants, Waste heat, Thermal Efficiency
