Results 21 to 30 of about 94,130 (263)
Thermodynamic uncertainty relations for steady-state thermodynamics
Physical Review E, 2023 A system can be driven out of equilibrium by both time-dependent and nonconservative forces, which gives rise to a decomposition of the dissipation into two non-negative components, called the excess and housekeeping entropy productions. We derive thermodynamic uncertainty relations for the excess and housekeeping entropy. These can be used as tools to
Takuya Kamijima +3 more
openaire +3 more sources
Entropy, 2022 The use of organic Rankine cycles (ORCs) is a viable solution for the recovery of waste heat. For an air separation unit (ASU) with a production of V˙O2=58300mN3/h operating in Romania, the value of utilization of the heat transferred to the cooling ...
Claudia Ionita +4 more
doaj +1 more source
Entropy, 2021 Multiscale thermodynamics is a theory of the relations among the levels of investigation of complex systems. It includes the classical equilibrium thermodynamics as a special case, but it is applicable to both static and time evolving processes in externally and internally driven macroscopic systems that are far from equilibrium and are investigated at
openaire +6 more sources
Frontiers in Energy Research, 2021 National energy models provide decarbonization strategies. Most national energy models focus on costs and greenhouse gas emissions only. However, this focus carries the risk that burdens shift to other environmental impacts.
Nils Baumgärtner +9 more
doaj +1 more source
Energy and exergy analysis of a flat plate collector using collector test equations [PDF]
E3S Web of Conferences, 2020 This paper presents the energetic and exergetic analysis of a widely used flat plate collector based on the collector testing equations. The evaluation of the performances of the collector is done under the climatic conditions corresponding to a typical ...
Gheorghian Adina-Teodora +2 more
doaj +1 more source
Framework for Automated Data-Driven Model Adaption for the Application in Industrial Energy Systems
IEEE Access, 2021 Increasing flexibility and efficiency of energy-intensive industrial processes is generally seen as a big lever towards a decarbonized energy system of the future.
Leopold Prendl +3 more
doaj +1 more source
Molecules, 2022 Overhauser dynamic nuclear polarization (ODNP) can be used as a tool for NMR signal enhancement and happens on very short time scales. Therefore, ODNP is well suited for the measurement of fast-flowing samples, even in compact magnets, which is ...
Raphael Kircher +3 more
doaj +1 more source
Gravitational thermodynamics [PDF]
Complexity, 1997 The gravitational N-body problem, for $N>2$, is the oldest unsolved problem in mathematical physics. Some of the most ideal examples that can be found in nature are globular star clusters, with $N \sim 10^6$. In this overview, I discuss six types of fundamental sources of unpredictability, each of which poses a different challenge to attempts to ...
openaire +2 more sources
Energy Science & Engineering, 2023 Pumped thermal energy storage (PTES) is a technology for intermediate storage of electrical energy in the form of thermal energy. In this work, PTES systems based on a transcritical CO2 charging process are investigated.
Jonas Bodner +3 more
doaj +1 more source
Communications Engineering, 2023 During phase change, phase change materials absorb or release latent heat at a nearly constant temperature. Latent heat thus can be stored and integrated with evaporation/condensation systems such as steam generators within a relatively narrow range of ...
Maike Johnson, Michael Fiss
doaj +1 more source