Investigation on the delayed closure of the suction valve in the refrigerator compressor by FSI modeling

Wang, Tao; Guo, Yi; He, Zhilong; Peng, Xueyuan

doi:10.1016/j.ijrefrig.2018.05.004

Cited by 38 publications

(14 citation statements)

References 10 publications

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“…When the pump speed decreases from 600 r/min to 360 r/min, the opening lag angles of the discharge valve decrease from 38.2 • to 37.5 • (reduced by 1.8%) and these values of the suction valve decrease from 37.2 • to 36.4 • (reduced by 2.2%). It is similar to the conclusion reached on the suction valve of the compressor in [34], and the opening lag angle of the valve increases with increasing back pressure and is approximately constant with increasing pump speed. In addition, the opening angles of the discharge and suction valves are the same under different back pressures and pump speeds.…”

Section: Valve Ball Liftsupporting

confidence: 87%

“…A transient 3D FSI model was proposed to investigate the working process of a diaphragm pump by using the commercial software-ADINA R version 9.3 [36]. ADINA R not only provides very efficient FSI capabilities for the solution of problems where the fluids are fully coupled to structures that can undergo a highly nonlinear response due to the diaphragm deformation, but can also control the opening and closing of the port valves through the gap boundary [33], [34]. In this FSI analysis, the diaphragm pump was divided into a fluid model and a corresponding solid model.…”

Section: Numerical Modelsmentioning

confidence: 99%

“…Tan et al [33] developed a transient 3D FSI model of the discharge valve using ADINA R software to analyze the dynamic behavior in a rotary compressor. Tao et al [34] presented a simulation of the complete compression cycle of a refrigerator compressor using a transient 3D FSI model, and the FSI model was able to accurately analyze the dynamic process of the valve and the results were validated by experiments. These investigations show that it is difficult to build a transient 3D FSI model of a diaphragm pump using ANSYS-FLUENT R , but it can be achieved with ADINA R .…”

Section: Introductionmentioning

confidence: 99%

“…Ma et al [35] studied the influence of the valve's lag characteristic on pressure pulsation and performance in a reciprocating piston pump using an FSI model, and the results showed that the lag angles had a significant impact on the internal and external characteristics of the reciprocating piston pump. Tao et al [34] studied the delayed closure of a suction valve in a compressor by an FSI model, and the results show that the back pressure and pump speed have a great influence on the dynamic characteristics of the valve. However, few previous works have studied the completed working cycle of a diaphragm pump and the dynamic characteristics of port valves using a transient 3D FSI model.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the Dynamic Characteristics of Port Valves in a Diaphragm Pump for Exhaust Gas Treatment System by FSI Modeling

et al. 2019

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The motions of port valves are a primary aspect to consider in achieving superior reliability and performance of a diaphragm pump, and it is necessary to perform detailed analyses to stabilize the motions of port valves. A transient 3D fluid-structure interaction (FSI) model was proposed to simulate a complete working process of a diaphragm pump and the motions of port valves. The dynamic mesh technique was used, and the deformation of the diaphragm was considered. Detailed descriptions of the FSI model creation development and the simulation methodology for the diaphragm pump were provided. Based on the FSI model, the influences of the back pressure and pump speed on the dynamic characteristics of port valves were analyzed, and the flow rate of the prototype was tested under different conditions on a test rig. The simulation results indicate that an increase in the back pressure and pump speed can lead to a reduction in the flow rate. The motions of the port valves are dependent on the back pressure and pump speed, and the deformation of the diaphragm is only dependent on the back pressure. The opening lag angles of the port valves increase significantly as the back pressure increases, but they are independent of the pump speed. In addition, the opening velocities of the port valves increase with increasing back pressure and pump speed. Finally, the simulation results also show agreement with the experimental data, and the FSI simulation method can predict the dynamic characteristics of port valves in a diaphragm pump. INDEX TERMS Diaphragm pump, port valves, dynamic characteristics, fluid structure interaction (FSI), dynamic mesh technique.

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Section: Valve Ball Liftsupporting

confidence: 87%

Section: Numerical Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation on the Dynamic Characteristics of Port Valves in a Diaphragm Pump for Exhaust Gas Treatment System by FSI Modeling

et al. 2019

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“…Wang et al established an FSI model to study the influences of the valve parameters and rotation speed on the delayed closure and oscillation of the reed valve. They obtained an empirical correlation formula to predict the rotation speed when the maximum backflow and delay closure occurred [24]. Qin Tan et al [25] proposed a 3D FSI model of the rolling rotor compressor to study the movement of the discharge valve.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Dynamic Characteristics of the Reed Valve in Compressors Based on Fluid-Structure Interaction Method

Wang

Jin

et al. 2021

Applied Sciences

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The flow in the gap between the reed and the valve seat has a significant influence on the dynamic characteristics of the reed valve used in reciprocating compressors. The fluid–structure interaction (FSI) method is an effective method for studying reciprocating compressors. A three-dimensional FSI model of a reciprocating compressor with a reed valve is established in this paper, which has an important influence on the flow rate characteristic of reciprocating compressors. Furthermore, an experimental investigation is implemented to verify the FSI model. Based on the established FSI model, the pressure distribution on the reed valve surface is identified by varying the height of the suction valve limiter and the rotational speed of the compressor, which has an important effect on the dynamic characteristics of the reed valve. Although the low-pressure region, due to the Bernoulli effect on the surface of the reed, hinders the rapid opening of the valve to some extent, it is obviously beneficial to the timely closure of the valve and increases the volumetric efficiency of the compressor. Moreover, the optimal height of the valve limiter and the appropriate rotational speed of the compressor are obtained.

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Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

Guo

Wang

Liu³

et al. 2022

Intl J of Energy Research

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Summary The ionic liquid compressor is regarded as the most promising compression technology for the hydrogen refuelling station due to the combined application of ionic liquid and the hydraulic driving system. However, the design, mathematical and experimental investigations of the ionic compressor are still absent from the open literature. This paper proposed a new structure design and the design methodology of the ionic liquid compressor. The mathematical modelling considering the valve dynamics was provided for simulating the thermodynamic process, which was verified by the experimental data. The results showed that the delayed closing of the discharge valve would take place due to a high or low stiffness of the valve. The increase in the stiffness alleviated the rebound issue of the suction valve. An increase in the stroke to diameter ratio could solve the rebound issue of the discharge valve. A low or high trajectory coefficient would cause an intense rebound during the closing procedure of the discharge valve. The designed results of the main parameters of the compressor based on the simulation were the suction valve stiffness of 100 N/m, the discharge valve stiffness of 500 N/m, the stroke to diameter ratio of 1.0, and the trajectory coefficient of 0.125 under the given design condition.

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Investigation on the delayed closure of the suction valve in the refrigerator compressor by FSI modeling

Cited by 38 publications

References 10 publications

Investigation on the Dynamic Characteristics of Port Valves in a Diaphragm Pump for Exhaust Gas Treatment System by FSI Modeling

Investigation on the Dynamic Characteristics of Port Valves in a Diaphragm Pump for Exhaust Gas Treatment System by FSI Modeling

Investigation on Dynamic Characteristics of the Reed Valve in Compressors Based on Fluid-Structure Interaction Method

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

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