Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedade Brasileira de Física
2009
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876482421846704128 |
|---|---|
| author | Shaojun Xia |
| author_facet | Shaojun Xia |
| contents | Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law Shaojun Xia Lingen Chen Fengrui Sun Física, Astronomía y Matemáticas Optimal control Heat transfer law Lost available work Heat transfer process Finite time thermodynamics A common of finite-time heat transfer processes between high- and low-temperature sides with a generalized heat transfer law are studied in this paper. The optimal heating and cooling configurations for minimizing lost available work are derived for the fixed initial and final temperatures of the working fluid of the system (low-temperature side). Optimal paths are compared with the common strategies of constant heat flux, constant source (reservoir) temperature and the minimum entropy generation operation by numerical examples. The condition corresponding to the minimum lost available work strategy is that corresponding to a constant rate of lost available work, not only valid for Newton's heat transfer law but also valid for the generalized convective heat transfer law. The obtained results are more general and can provide some theoretical guidelines for the designs and operations of practical heat exchangers. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413555017 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.39 |
| format | Artículo científico |
| id | redalyc_46413555017 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law Shaojun Xia Física, Astronomía y Matemáticas Optimal control Heat transfer law Lost available work Heat transfer process Finite time thermodynamics Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law Shaojun Xia Lingen Chen Fengrui Sun Física, Astronomía y Matemáticas Optimal control Heat transfer law Lost available work Heat transfer process Finite time thermodynamics A common of finite-time heat transfer processes between high- and low-temperature sides with a generalized heat transfer law are studied in this paper. The optimal heating and cooling configurations for minimizing lost available work are derived for the fixed initial and final temperatures of the working fluid of the system (low-temperature side). Optimal paths are compared with the common strategies of constant heat flux, constant source (reservoir) temperature and the minimum entropy generation operation by numerical examples. The condition corresponding to the minimum lost available work strategy is that corresponding to a constant rate of lost available work, not only valid for Newton's heat transfer law but also valid for the generalized convective heat transfer law. The obtained results are more general and can provide some theoretical guidelines for the designs and operations of practical heat exchangers. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413555017 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.39 |
| title | Optimal paths for minimizing lost available work during heat transfer processes with a generalized heat transfer law |
| topic | Física, Astronomía y Matemáticas Optimal control Heat transfer law Lost available work Heat transfer process Finite time thermodynamics |
| url | https://www.redalyc.org/articulo.oa?id=46413555017 |