Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Flow Characteristics of Reed Valve with Variable Geometric Variations for Cryogenic Linear Expander

극저온 선형 팽창기용 리드밸브의 기하학적 형상변화에 따른 유동 특성 연구

  • Jeong, Eun A (Department of Extreme Energy System, Korea Institute of Machinery ＆ Materials) ;
  • Kim, Ji U (Department of Extreme Energy System, Korea Institute of Machinery ＆ Materials) ;
  • Yeom, Han Kil (Department of Extreme Energy System, Korea Institute of Machinery ＆ Materials) ;
  • Yun, So Nam (Department of Extreme Energy System, Korea Institute of Machinery ＆ Materials)
  • Received : 2015.09.24
  • Accepted : 2015.11.23
  • Published : 2015.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with the flow characteristics of a reed valve analyzed using computational dynamics(CFD) for optimal design. The seat sizes of the valve are modeled asØ6[mm] and Ø8[mm] to compare the flow characteristics. The inlet boundary condition is entered at 10[kPa], 15[kPa], 20[kPa], and 30[kPa] and the outlet boundary condition is set to the atmospheric pressure. The flow coefficient(C) and pressure loss coefficient(K) are calculated from the results of flow analysis. From the analysis results, it was confirmed that the flow coefficient of a reed valve having a seat size of Ø6[mm] is greater than that having a seat size of Ø8[mm], and the coefficient of pressure loss of a valve with a seat size of Ø6[mm] is lower than the Ø8[mm] size valve.

Keywords

References

  1. J. H. Park, T. M. Kim, "Flow Analysis and Measurement of Pressure Distribution along Include Circular Valve Reeds and Valve Seat Geometric Parameters of Reciprocating Compressor," SAE Paper 2000-01-1225, pp. 325-423, 2000.
  2. S. M. Yang, S. H Beak, and S. Kang, "SHAPE DESIGN FOR DISC OF A DOBLE-ECCENTRIC BUTTERFLY VALVE USING THE TOPOLOGY OPTIMIZATION TECHNIQUE," J. Comput. Fluid Eng, Vol.17, No.1, pp. 61-69, 2012. https://doi.org/10.6112/kscfe.2012.17.1.061
  3. J. H. Lee, S. C. Baek, B. G. Choi and H. D. Kim, "A Study of the Compound Choking Phenomenon in Gas Flows," Korea Society of Mechanical Engineers, Vol.27, No.1, pp.54-60, 2003. https://doi.org/10.3795/KSME-B.2003.27.1.054
  4. S. M. Park, H. K. Choi and G. J. Yoo, "STUDY ON FLOW CHARACTERISTICS FOR PRECISION CONTROL BUTTERFLY VALVE," J. Comput. Fluid Eng, Vol.19, No.1, pp.21-26, 2014. https://doi.org/10.6112/kscfe.2014.19.1.021
  5. H. J. Kim, J. P. Park, "Assessment of CFD Estimation Capability for the Local Loss Coefficients of Sudden Contraction and Expansion," Appl. Chem. Eng., Vol.21, No.3, pp.258-264, 2010.
  6. H. B. Park, H. J. Sung, D. R. Ryu and Y. S. Kim, "Flow Analysis of Servo Valve for energy saving of CAES system," KSFC, No.10, pp.145-149, 2008.
  7. M. T. Cho, J. H. Cho, "Heat and Fluid Flow Analysis by SC/Tetra," KSFC, Vol.2, No.1, pp.48-54, 2005.

Cited by

  1. A Novel Predictable Rock Breaker Using Intelligent Hydraulic Control with ICT Convergences vol.9, pp.16, 2015, https://doi.org/10.3390/app9163333