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Experimental study on the performance of single-screw expander with different inlet vapor dryness
Applied Thermal Engineering, 2015Abstract A single-screw expander with 155 mm diameter screw has been developed. In order to investigate the performance of this prototype with different inlet vapor dryness, an organic Rankine cycle experimental system was built, and experiments were conducted at different inlet vapor dryness by adjusting the mass flow rate of working fluid into ...
Chong-Fang Ma, Hang Guo
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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, Yuting Wu, Chongfang Ma
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Influence of intake pressure on the performance of single screw expander working with compressed air
Applied Thermal Engineering, 2013Abstract In order to meet the demand of small expander in the field of waste heat recovery, distributed renewable energy, gas liquefaction and compressed air vehicles, a single screw expander with 175 mm diameter rotor is developed in our lab. An experimental system using compressed air has been built to test the performance of single screw expanders.
Wei He, Yuting Wu, Chongfang Ma
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Mathematical modeling of torque for single screw expanders
Journal of Mechanical Science and Technology, 2017This paper presents a mathematical model of torque for Single screw expanders (SSEs). Instantaneous torque and torque ratio were analyzed and discussed. The periodic variation of instantaneous torque is the same for different inlet pressure levels. The torque ratio, with its value close to 1, is independent of the inlet pressure of SSE. An experimental
Yuting Wu +7 more
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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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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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The Experimental Study on Performance of Single Screw Expander with Air as Working Fluid
Advanced Materials Research, 2013A new single screw expansion machine was developed in order to improve the practical level of low temperature thermal power generation technology and the utilization of waste heat and renewable energy. With compressed air as working fluid, the power, efficiency, gas consumption rate and temperature difference of single screw expander with rotational ...
Jing Fu Wang +3 more
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Review and update on the geometry modeling of single-screw machines with emphasis on expanders
International Journal of Refrigeration, 2018Abstract Single-screw type of machines has been widely used in the vapor compression industry for decades. More recently, such machines have been proposed as volumetric expanders in organic Rankine cycle (ORC) for low-grade waste heat recovery applications because of a number of advantages compared to other volumetric machines, e.g., twin-screw ...
Davide Ziviani +3 more
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