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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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, 2020
Heat dissipation was the one of the irreversible losses of expanders. For small capacity expanders, the influence of it on the performance of expanders might be more significant.
W. Wang +4 more
semanticscholar +1 more source
Heat dissipation was the one of the irreversible losses of expanders. For small capacity expanders, the influence of it on the performance of expanders might be more significant.
W. Wang +4 more
semanticscholar +1 more source
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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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 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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ASME 2012 6th International Conference on Energy Sustainability, Parts A and B, 2012
Improving thermodynamic efficiency of prime movers is the key issue for efficient utilization of low temperature heat resources. Because of many good characteristics, the single screw expander is perhaps a good choice. Precisions in manufacture and assembly are very important factors to the performance of single screw expanders.
Wei Wang +5 more
openaire +1 more source
Improving thermodynamic efficiency of prime movers is the key issue for efficient utilization of low temperature heat resources. Because of many good characteristics, the single screw expander is perhaps a good choice. Precisions in manufacture and assembly are very important factors to the performance of single screw expanders.
Wei Wang +5 more
openaire +1 more source