| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] EPUSP, BR-05508030 Sao Paulo - Brazil
[2] Univ Fed Sao Paulo UNIFESP, BR-09910720 Diadema - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | APPLIED THERMAL ENGINEERING; v. 145, p. 245-250, DEC 25 2018. |
| Web of Science Citations: | 0 |
| Abstract | |
Thermomagnetic motors are devices capable of converting heat into work with high efficiency relative to the Carnot efficiency. This work reports how the temperature, applied magnetic field, and demagnetizing factor, change the performance of thermomagnetic motors, using a thermodynamic approach. Results show that these systems present high efficiency related to the Carnot efficiency for small temperature differences and better correlation between work produced by cycle and relative efficiency when the magnetic transition occurs. The relation of work and relative efficiency can also be improved by increasing the applied magnetic field change and reducing the demagnetizing factor. For some special temperature conditions, a lower magnetic field change can result in higher work production. Also the decrease of the demagnetization factor acts as an increase of the magnetic field change applied to the motor magnetic material. (AU) | |
| FAPESP's process: | 15/26799-0 - Development of Tesla type Thermomagnetic Motors Driven by Solar Energy or by Industrial Thermal Rejects - Part III |
| Grantee: | Sergio Gama |
| Support Opportunities: | Regular Research Grants |