The role of the Stefan–Boltzmann law in the thermodynamic optimization of an n-Müser engine
| Autor: | Fernando Angulo-Brown, S. González-Hernández, M.A. Ramírez-Moreno |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Statistics and Probability
Physics Thermal efficiency Stefan–Boltzmann law Thermodynamics Statistical and Nonlinear Physics 01 natural sciences 010305 fluids & plasmas symbols.namesake Thermal conductivity 0103 physical sciences Heat transfer Heat exchanger symbols Applied mathematics Black-body radiation 010306 general physics Real number Heat engine |
| Zdroj: | Physica A: Statistical Mechanics and its Applications. 444:914-921 |
| ISSN: | 0378-4371 |
| DOI: | 10.1016/j.physa.2015.10.094 |
| Popis: | A Muser-type engine model can be taken as a particular case of a Curzon–Ahlborn thermal cycle, when the upper thermal conductance is finite and the lower one is infinite. In addition, the upper heat exchange is given by the Stefan–Boltzmann law. That model is suitable to thermodynamically describe some aspects of energy converters as solar cells and photosynthetic systems. In the present article, we call n -Muser engine to an engine of the Muser type in which the T 4 heat transfer law is substituted by a T n -law, being n > 0 a real number. Here, we show that if we use the so-called ecological criterion of merit to optimize finite-time heat engines to compare the thermodynamic performance of the n -Muser engines under approximate terrestrial conditions (see below), we obtain that n = 4 accomplishes the best performance. This same result was obtained by using data from the rest of planets of the solar system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect