Results 1 to 10 of about 2,985,880 (278)

The saturated and supercritical Stirling cycle thermodynamic heat engine cycle [PDF]

AIP Advances, 2018
On the assumption that experimentally validated tabulated thermodynamic properties of saturated fluids published by the National Institute of Standards and Technology are accurate, a theoretical thermodynamic cycle can be demonstrated that produces a net-
Matthew David Marko
doaj   +8 more sources

Endoreversible Stirling Cycles: Plasma Engines at Maximal Power [PDF]

Entropy
Endoreversible engine cycles are a cornerstone of finite-time thermodynamics. We show that endoreversible Stirling engines operating with a one-component plasma as a working medium run at maximal power output with the Curzon–Ahlborn efficiency. As a main
Gregory Behrendt, Sebastian Deffner
doaj   +5 more sources

Evaluation of the Environmental Sustainability of a Stirling Cycle-Based Heat Pump Using LCA [PDF]

Energies, 2020
Heat pumps are increasingly seen as efficient and cost-effective heating systems also in industrial applications. They can drastically reduce the carbon footprint of heating by utilizing waste heat and renewable electricity.
Umara Khan, Ron Zevenhoven, Tor-Martin Tveit   +2 more
doaj   +3 more sources

Studies on Stirling Power Cycles- A Review [PDF]

Journal of Advanced Mechanical Sciences, 2022
The Stirling power cycle consists of 2 isothermal processes (heat supply and heat removal processes) and two isochoric processes (compression and expansion processes).
S. Gokulsai
doaj   +3 more sources

Idealization of The Real Stirling Cycle

Journal of Middle European Construction and Design of Cars, 2016
The paper presents a potential idealization of the real Stirling cycle. This idealization is performed by modifying the piston movement corresponding to the ideal Stirling cycle.
Červenka Libor
doaj   +4 more sources

Numerical investigation of a new combined energy cycle based on Miller cycle, Organic Rankine cycle, Stirling engine and alkaline fuel cell

Energy Reports, 2021
Using a combined energy cycle based on conventional and/ or clean energy sources can be a suitable option to dominate the limitations in the field of energy. Meanwhile, the select of the prime power source in such processes is a challengeable issue.
Xin Yu, Chen She, Farid Gholizadeh, Yi-Peng Xu   +3 more
doaj   +3 more sources

Stirling Numbers of Forests and Cycles [PDF]

The Electronic Journal of Combinatorics, 2013
For a graph $G$ and a positive integer $k$, the graphical Stirling number $S(G,k)$ is the number of partitions of the vertex set of $G$ into $k$ non-empty independent sets. Equivalently it is the number of proper colorings of $G$ that use exactly $k$ colors, with two colorings identified if they differ only on the names of the colors.
David Galvin, Do Trong Thanh
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Thermodynamic analysis of the Stirling cycle

Cryogenics, 1988
Abstract The thermodynamic analysis of the Stirling cycle presented here accounts for the effects of two important design parameters, namely dead space and imperfect regeneration. The definition of the refrigerating efficiency introduced here ensures a fruitful comparison of cycle performance with dead volume and without dead volume.
P. R. Tailor, K.G. Narayankhedkar
openalex   +4 more sources

A Determinant of Stirling Cycle Numbers Counts Unlabeled Acyclic Single-Source Automata [PDF]

Discrete Mathematics & Theoretical Computer Science, 2008
We show that a determinant of Stirling cycle numbers counts unlabeled acyclic single-source automata. The proof involves a bijection from these automata to certain marked lattice paths and a sign-reversing involution to evaluate the determinant.
David Callan
doaj   +2 more sources

The variance of the Stirling cycle numbers

, 2005
We show that the probability that two permutations of $n$ letters have the same number of cycles is \[\sim \frac{1}{2\sqrt{ \log{n}}}.\]
Herbert S. Wilf
openalex   +4 more sources