Application of the direct method to irreversible Stirling cycles with finite speed

S Petrescu, M Costea, C Harman… - International Journal of …, 2002 - Wiley Online Library
A technique for calculating the efficiency and power of Stirling machines is presented. This
technique is based on the First Law of Thermodynamics for processes with finite speed and …

The effect of irreversibilities on solar Stirling engine cycle performance

M Costea, S Petrescu, C Harman - Energy conversion and management, 1999 - Elsevier
The purpose of this study is to determine the effect of pressure losses and actual heat
transfer on the performance of a solar Stirling engine. The model presented includes the …

A methodology of computation, design and optimization of solar Stirling power plant using hydrogen/oxygen fuel cells

S Petrescu, C Petre, M Costea, O Malancioiu, N Boriaru… - Energy, 2010 - Elsevier
The objective of this paper is to develop a methodology to determine how many houses
could be fueled from the solar energy captured by a number of solar Stirling modules (with a …

Optimization modeling of irreversible Carnot engine from the perspective of combining finite speed and finite time analysis

M Costea, S Petrescu, M Feidt, C Dobre, B Borcila - Entropy, 2021 - mdpi.com
An irreversible Carnot cycle engine operating as a closed system is modeled using the
Direct Method and the First Law of Thermodynamics for processes with Finite Speed …

Study of a Stirling engine used for domestic micro‐cogeneration. Thermodynamic analysis and experiment

L Grosu, C Dobre, S Petrescu - International Journal of Energy …, 2015 - Wiley Online Library
One of the aims of this work is the study of the geometry of a micro‐cogenerator using a
Stirling engine with four double effect pistons. The complex geometry of the heat exchangers …

Optimal piston speed ratio analyses for irreversible Carnot refrigerator and heat pump using finite time thermodynamics, finite speed thermodynamics and direct …

LG Chen, HJ Feng, FR Sun - Journal of the Energy Institute, 2011 - Taylor & Francis
An irreversible Carnot refrigeration and heat pump cycle model with external irreversibilities
caused by finite rate of heat transfer, heat leakage from heat sink to heat source and internal …

[PDF][PDF] Discovery of Quantum Numbers In the Cardio-Pulmonary Interaction studied In Thermodynamics with Finite Speed

S Petrescu, V Petrescu, M Costea, L Timofan… - Proceedings of ASTR …, 2014 - agir.ro
The paper proposes an extension of Thermodynamics with Finite Speed (TFS) to Biological
Systems, with Cardio-Pulmonary System study as the first objective. It is an extremely …

[PDF][PDF] Means for qualitative and quantitative description of the Cardio-Pulmonary System Operation within Irreversible Thermodynamics with Finite Speed

S Petrescu, M Costea, L Timofan, V Petrescu - Proceedings of ASTR …, 2014 - agir.ro
Illness and aging are irreversible processes, which inevitably affects us all. The answers to
the questions how, why, and how much irreversible are the cardio-respiratory system …

[PDF][PDF] Processes with Quantum Jumps in the Cardio-Pulmonary System

S Petrescu, M Costea, AS Petrescu, V Petrescu… - Proceedings of ASTR …, 2015 - agir.ro
As part of the authors' work to extend Thermodynamics with Finite Speed to the study of
Biological Systems, once discovered the Stationary Quantum States of the Human Cardio …

[PDF][PDF] Stationary Quantum States in Cardio-Pulmonary System

S Petrescu, M Costea, V Petrescu, R Bolohan… - Proceedings of ASTR …, 2015 - agir.ro
The proposed paper presents the results of systematic theoretical and experimental
research with the goal of applying and extending Thermodynamics with Finite Speed to the …