Performance Study on a Single-Screw Expander for a Small-Scale Pressure Recovery System [PDF]
Energies, 2016 A single-screw expander with 195 mm diameter is developed to recover pressure energy in letdown stations. An experiment system is established using compressed air as a working fluid instead of natural gas.
Guoqiang Li +5 more
doaj +3 more sources
Zeotropic Mixture Selection for an Organic Rankine Cycle Using a Single Screw Expander [PDF]
Energies, 2020 The organic Rankine cycle (ORC) is a popular and promising technology that has been widely studied and adopted in renewable and sustainable energy utilization and low-grade waste heat recovery.
Xinxin Zhang +5 more
doaj +3 more sources
Working Fluid Selection for Organic Rankine Cycle Using Single-Screw Expander [PDF]
Energies, 2019 The organic Rankine cycle (ORC) is a popular technology used in waste heat recovery and medium-low-temperature heat utilization. Working fluid plays a very important role in ORC.
Xinxin Zhang +5 more
doaj +3 more sources
Experimental Study on Heat Loss of Single Screw Expander
Zhileng xuebao, 2019 The performance of a single crew expander, which is among the most suitable types of expander in the organic Rankine cycle system, plays an important role in the system.
Chen Rumeng +4 more
doaj +3 more sources
Tricortical versus bicortical anchorage in a double-screw tandem skeletal expander and a single-screw maxillary anchorage rapid palatal expander: A finite element analysis. [PDF]
Korean J OrthodThis study aims to employ finite element method (FEM) analysis to compare the differences between bicortical and tricortical anchorage of the posterior miniscrews in a single-screw miniscrew-assisted rapid palatal expansion (MARPE) and a double-screw tandem skeletal expander (TSE) under open and closed suture conditions.A cone beam computed tomography ...
Brucculeri L +5 more
europepmc +6 more sources
Slide Valves for Single-Screw Expanders Working Under Varied Operating Conditions [PDF]
Energies, 2016 This paper fully describes the working principle of slide valves in single-screw expanders (SSEs). A geometric analysis of suction and volume ratio slide valves is presented to determine the relations between volume ratio, suction closure volume ...
Yuting Wu +7 more
doaj +3 more sources
Improving the semi-empirical modelling of a single-screw expander for small organic Rankine cycles [PDF]
Applied Energy, 2017 Abstract The common semi-empirical modelling adopted for positive-displacement rotary expanders is revised in this paper. Paying particular attention to the leakage flow rates, the mechanical losses at the shaft and the ambient heat losses by the proposal of a more physically sound modelling, this paper aims at improving the performance simulation of
Antonio Giuffrida
exaly +4 more sources
CFD Simulations of Single- and Twin-Screw Machines with OpenFOAM
Designs, 2020 Over the last decade, Computational Fluid Dynamics (CFD) has been increasingly applied for the design and analysis of positive displacement machines employed in vapor compression and power generation applications.
Nicola Casari +4 more
doaj +2 more sources
White M. T., Read M. G., Sayma A. I. Comparison between single and cascaded organic Rankine cycle systems accounting for the effects of expansion volume ratio on expander performance / trans. from Engl. M. A. Fedorova [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2020 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 ...
M. A. Fedorova
doaj +1 more source
Frontiers in Energy Research, 2021 In order to recover the energy loss due to the throttling in the path of ammonia-lean solution in the Kalina Cycle System (KCS) 34, two redesigned cycles, in which single-screw expanders that can perform two-phase expansion are used to replace the ...
Xinxin Zhang +9 more
doaj +1 more source