10.15480/882.1410
Wenterodt, Tammo
Tammo
Wenterodt
1018699589
Herwig, Heinz
Heinz
Herwig
11010224X
The entropic potential concept: a new way to look at energy transfer operations
Multidisciplinary Digital Publishing Institute
2014
Journal Article
heat transfer
assessment
entropy
energy devaluation
power generation
second law analysis
roughness
Ingenieurwissenschaften
TUHH Universitätsbibliothek
TUHH Universitätsbibliothek
2017-08-25
2017-08-25
2014-04-14
2017-08-24
en
Entropy 16 (4): 2071-2084 (2014)
http://tubdok.tub.tuhh.de/handle/11420/1413
urn:nbn:de:gbv:830-882w02170
11420/1413
10.3390/e16042071
1099-4300
Entropy
2014
Multidisciplinary Digital Publishing Institute
Creative Commons Attribution 3.0 Unported
Energy transfer operations or processes are systematically analyzed with respect to the way they can be assessed. It turns out that the energy transfer should not only be characterized by the operation or process itself but that it should be seen in a wider context. This context is introduced as the entropic potential of the energy that is transferred. It takes into account the overall transfer from the energy in its initial and finite states, <em>i.e.</em>, starting as pure exergy when it is a primary energy, for example, and ending as pure anergy when it has become part of the internal energy of the ambient. With this concept an energy devaluation number can be defined which has several properties with a reasonable physical background. Two examples of different complexity of the process assessed are given and discussed with respect to the physical meaning of the new energy devaluation number.
Energy transfer operations or processes are systematically analyzed with respect to the way they can be assessed. It turns out that the energy transfer should not only be characterized by the operation or process itself but that it should be seen in a wider context. This context is introduced as the entropic potential of the energy that is transferred. It takes into account the overall transfer from the energy in its initial and finite states, <em>i.e.</em>, starting as pure exergy when it is a primary energy, for example, and ending as pure anergy when it has become part of the internal energy of the ambient. With this concept an energy devaluation number can be defined which has several properties with a reasonable physical background. Two examples of different complexity of the process assessed are given and discussed with respect to the physical meaning of the new energy devaluation number.