TY - JOUR
T1 - Optimization criteria, bounds, and efficiencies of heat engines
AU - Sánchez-Salas, N.
AU - López-Palacios, L.
AU - Velasco, S.
AU - Calvo Hernández, A.
PY - 2010/11/1
Y1 - 2010/11/1
N2 - The efficiency of four different and representative models of heat engines under maximum conditions for a figure of merit representing a compromise between useful energy and lost energy (the Ω criterion) is investigated and compared with previous results for the same models where the efficiency is considered at maximum power conditions. It is shown that the maximum Ω regime is more efficient and, additionally, that the resulting efficiencies present a similar behavior. For each performance regime we obtain explicit equations accounting for lower and upper bounds. The optimization of refrigeration devices is far from being as clear as heat engines, and some remarks on it are finally considered.
AB - The efficiency of four different and representative models of heat engines under maximum conditions for a figure of merit representing a compromise between useful energy and lost energy (the Ω criterion) is investigated and compared with previous results for the same models where the efficiency is considered at maximum power conditions. It is shown that the maximum Ω regime is more efficient and, additionally, that the resulting efficiencies present a similar behavior. For each performance regime we obtain explicit equations accounting for lower and upper bounds. The optimization of refrigeration devices is far from being as clear as heat engines, and some remarks on it are finally considered.
UR - http://www.scopus.com/inward/record.url?scp=78651340106&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.82.051101
DO - 10.1103/PhysRevE.82.051101
M3 - Artículo
C2 - 21230431
SN - 1539-3755
VL - 82
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 5
M1 - 051101
ER -