Results 21 to 30 of about 753 (248)

Experimental Study on Heat Loss of a Single Screw Expander for an Organic Rankine Cycle System

open access: yesFrontiers in Energy Research, 2020
For displacement expanders, the irreversible losses include leakage, friction, heat dissipation, and flow resistance. Currently, the research on the heat loss of expanders is scarce, especially with regards to experimental studies.
Wei Wang   +9 more
doaj   +1 more source

Closed-Loop PI Control of an Organic Rankine Cycle for Engine Exhaust Heat Recovery

open access: yesEnergies, 2020
The internal combustion engine (ICE) as a main power source for transportation needs to improve its efficiency and reduce emissions. The Organic Rankine Cycle (ORC) is a promising technique for exhaust heat recovery.
Wen Zhang   +4 more
doaj   +1 more source

Operation Characteristics and Transient Simulation of an ICE-ORC Combined System

open access: yesApplied Sciences, 2019
Currently, internal combustion engines (ICEs) are still the main power for transportation. Energy conservation and emission reduction for ICEs have become the driving force of the industrial R&D in recent years.
Tong Liu   +6 more
doaj   +1 more source

Development and a Validation of a Charge Sensitive Organic Rankine Cycle (ORC) Simulation Tool

open access: yesEnergies, 2016
Despite the increasing interest in organic Rankine cycle (ORC) systems and the large number of cycle models proposed in the literature, charge-based ORC models are still almost absent.
Davide Ziviani   +7 more
doaj   +1 more source

Update on single-screw expander geometry model integrated into an open-source simulation tool [PDF]

open access: yes, 2015
In this paper, a mechanistic steady-state model of a single-screw expander is described with emphasis on the geometric description. Insights into the calculation of the main parameters and the definition of the groove profile are provided.
Ziviani, DavideUGent000121093786802001576991975973258986D40416F8-DDE2-11E2-917F-78B210BDE39D   +6 more
core   +1 more source

Performance evaluation of a novel single-screw compressor and expander design

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract Single-screw machines have seen significant development and improvement over the last decades and they are currently employed as both compressors and expanders in several applications. The correct functioning of the machine heavily relies on the meshing between the gate rotors and the central rotor which is directly linked to ...
Davide Ziviani   +2 more
openaire   +1 more source

Economic Analysis of Organic Rankine Cycle Using R123 and R245fa as Working Fluids and a Demonstration Project Report

open access: yesApplied Sciences, 2019
The organic Rankine cycle (ORC) is a popular technology used in waste heat recovery and low-grade heat utilization, which are two important measures to solve the problems brought by the energy crisis.
Xinxin Zhang   +4 more
doaj   +1 more source

Experimental Study of Single Screw Expander Used in Low-medium Temperature Geothermal Power System

open access: yes, 2014
Research and development of renewable energy is one solution to energy crisis and its related environmental problem. Among all kinds of renewable energy, geothermal energy has good development feasibility due to its low investment and operation costs ...
Wang, Wei   +4 more
core   +1 more source

Five‐Year Disease Progression in Synuclein Seeding Positive Sporadic Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To provide a comprehensive description of disease progression in synuclein seeding assay (SAA) positive sporadic Parkinson Disease participants, using Neuronal Synuclein Disease integrated biological and functional impairment staging framework.
Paulina Gonzalez‐Latapi   +19 more
wiley   +1 more source

Comparison between single and cascaded organic Rankine cycle systems accounting for the effects of expansion volume ratio on expander performance [PDF]

open access: yes, 2019
Compared to single-stage organic Rankine cycle (ORC) systems, cascaded ORC systems, in which a high-temperature topping cycle and low-temperature bottoming cycle are coupled together, could have advantages in terms of removing the potential for sub ...
Read, M. G., Sayma, A. I., White, M.
core   +1 more source

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