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Analysis of circumferential gas force on star-wheel in a single screw expander
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2022Service life of a star-wheel directly affects operation stability of a single screw expander. In addition, since star-wheel tooth of a single screw expander is prone to wear, circumferential force of the star-wheel rotor is investigated in this paper.
Rui Huang +6 more
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Investigation of flow characteristics in a single screw expander: A numerical approach
Energy, 2020Abstract In this paper, a three-dimensional computational fluid dynamics (CFD) simulation is carried out to investigate the performance of a single screw expander by linking its behavior with the dynamic features of the flow field. To study this aspect and other phenomena that can affect expander operation in an actual Organic Rankine Cycle (ORC ...
Casari N. +5 more
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Journal of Hydrodynamics, 2014
The CFD simulations are carried out for the flows in a horizontally oriented helical pipe with various inlet sectional liquid holdups and coil pitches (H). The development of the pressure fields for the single phase air flow and the air-water two-phase flow through the helical rectangular channels is studied.
Guo-dong Xia +3 more
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The CFD simulations are carried out for the flows in a horizontally oriented helical pipe with various inlet sectional liquid holdups and coil pitches (H). The development of the pressure fields for the single phase air flow and the air-water two-phase flow through the helical rectangular channels is studied.
Guo-dong Xia +3 more
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Theoretical and experimental analyses of the internal leakage in single-screw expanders
International Journal of Refrigeration, 2018Abstract A single-screw expander (SSE) is a type of volumetric expander that can be applied to power generation, which is beneficial for energy conservation and environment protection. Investigating the SSE leakage characteristics is necessary because leakage has a significant influence on the SSE performance.
Lili Shen +6 more
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Experimental study on the performance of single screw expanders by gap adjustment
Energy, 2013Abstract Improving thermodynamic efficiency of prime movers is the key issue for efficient utilization of low-temperature heat resources. Single screw expander may be a good candidate because of its many good characteristics. Precisions in manufacture and assembly are very important factors to the performance of single screw expanders. In this paper,
Wei Wang +4 more
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Performance study on compressed air refrigeration system based on single screw expander
Energy, 2013Abstract A new kind of expanders, called as single screw expander, has been developed by our team and applied to refrigeration systems. The present paper is to determine experimentally the refrigeration performance of a compressed air refrigeration system which is based on a single screw expander with 175 mm diameter rotor.
Yuanwei Lu +5 more
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Dynamic Mesh Technology for the Simulation Study of Single Screw Expander
2019Computational fluid dynamics (CFD) methods have been widely used in simulating internal flow of rotary positive displacement type compressors and expanders, especially for twin screw, scroll and rolling piston machines. But it is still lack of CFD research on single screw compressors and expanders due to the difficulty of spacial screw curved surface ...
Lili Shen +5 more
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Power system study of engine waste heat recovery based on single screw expander
2011 International Conference on Electric Information and Control Engineering, 2011This paper introduces the principle of the engine waste heat recovery system. The organic Rankine cycle (orc) system is proposed to improve the efficiency of waste heat recovery. GT-power software is used to make a DI engine model of 493ZLQ3. The model simulates the exhaust temperature on the brake power curve and brake torque curve based on the ...
Bin Liu +4 more
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Static Finite Element Analysis on Cast Shell of a 100 kW Single Screw Expander
Applied Mechanics and Materials, 2014In the process of shell design of a 100kW single screw expander, the fundamental research on the screw chamber walls thickness is still lacking. Thin wall may cause deformation and the damage possibility of the inlet passage. Thick wall will increase the weight of the expander and led to assembly problem and transportation inconvenience. In this paper,
Qi Liu +5 more
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The influence of lubrication oil on single screw expander operation
International Journal of Refrigeration, 2023Xiaofeng Song +6 more
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