Performance evaluation of a magnetic refrigeration system
| Autor: | Jaime Lozano, Jader R. Barbosa, Matheus S. Capovilla, Paulo V. Trevizoli |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Fluid Flow and Transfer Processes
Work (thermodynamics) Engineering Thermal efficiency Environmental Engineering business.industry 020209 energy Mechanical engineering 02 engineering and technology Building and Construction Coefficient of performance Cooling capacity Automotive engineering Power (physics) Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Magnetic refrigeration Torque business |
| Zdroj: | Science and Technology for the Built Environment. 22:534-543 |
| ISSN: | 2374-474X 2374-4731 |
| Popis: | This work presents an evaluation of the thermodynamic performance of a magnetic refrigerator prototype developed at the Federal University of Santa Catarina. Experiments were carried out to determine the power consumption of the system as a whole, and of its main components (sub-systems) individually. The transmission powers associated with the system components were computed from the torques required to drive each sub-system at frequencies between 0.2 and 1.6 Hz. Thermodynamic efficiency parameters, namely the coefficient of performance and the second-law efficiency were computed. Maximum values of the coefficient of performance and second-law efficiency of 2.5 and 3.7%, respectively, were obtained at system temperature spans of 4 and 6 K. The maximum zero-span cooling capacity was approximately 150 W. The major limitations to enhancing the system performance were the losses in the flow management sub-system (pumping power and valve losses). Improving the operation of the components in this system would ... |
| Databáze: | OpenAIRE |
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