Terminologies & References


Abbreviations

Abbreviation Original word Description
Act. Vol. Actual Volume Real volume
C Conductance Pipe conductance
Calc Vol. Calculated Volume Automatically calculated volume
Ch Chamber Condition Input Chamber condition input
Comp System Completion Completion of system
C-Eval Pipe Conductance Evaluation Evaluation of pipe conductance
DN Nominal Diameter Standard diameter size of pipe
Edge R. Edge Radius Radius of round edge
F/P Throughput (Flow/Pressure) Gas throughput of the pump by pressure
ID Pipe Inside Diameter Pipe inner diameter
PDT Pump Down Time Time to reach the target pressure from the starting pressure at chamber
Per. Percentage Percentage (%)
P-Eval Pump Capacity Evaluation Evaluation of pump capacity
Req Requirement Vacuum requirement
R/D (r/D) Bend Radius / Inside Diameter Bend radius/inner diameter ratio
Seff Effective Pumping Speed Actual exhaust velocity acting on the chamber
Sim Vacuum Performance Simulation Performance simulation of vacuum system
Wall Th. Chamber Wall Thickness Thickness of chamber wall

Terminologies

Terminology Description
Angle valve 90° angle valve
ASME Industrial standards and standards development agencies in the United States
Bend Round curved tube with R/D ratio
Capacity Pumping capacity of pump (normally peak pumping speed of pump)
Conductance Opposition to the resistance of gas flow in pipes. Smoothness of gas flow in pipes
Cross section area Cross section area of pipe
Elbow Round curved tube
Flexible A corrugated pipe used where vibration or play at a junction may occur
Gas flow Amount of gas injected into the chamber continuously
Hole type Type of connection between chamber and pipe
ISO/EN European Industrial Standards and Standards Development Organization
KS Korean Industrial Standards and standards development agency
Miter Jointed or welded tube consisting of two parts with angle
Primary pump Pump that operates from atmospheric pressure and consists of one pumping block (w/o roots blower)
Primary+Roots pump Pump that operates from atmospheric pressure and combined with 1 or 2 roots blowers on the primary pump
Process pressure Chamber pressure under a certain amount of gas flow
Pump down time Time to reach the target pressure from the starting pressure at chamber
Pumping speed Pumping capacity per pressure. Volume of gas passing through the cross section per unit time
Start pressure The starting pressure at chamber during pumping down
Takt time The desired time to reach the target pressure from the start pressure at chamber
Target pressure Target pressure of chamber pressure to reach during pumping down
Throughput Gas throughput of the pump. Amount of gas passing through a cross section per unit time
Effective pumping speed Actual pumping speed working at the chamber

References

Title Publisher Author Published Date
진공 기술 해석 씨아이알 Lee Je-hyeong Aug. 2021
진공 및 공정기술 내하출판사 Kim Hyeon-hu, etc. Feb. 2015
진공 공학 한국경제신문사 Bae Seok-hee, etc. Dec. 2007
기초 진공 공학 내하출판사 Kim Hyeon-hu, etc. Aug. 2007
진공 기술 실무 도서출판 홍릉 Ju Jang-heon Apr. 2004
진공 과학 입문 교문사 (청문각) Jeong Seok-min, etc. Apr. 2001
High Vacuum Technique; Theory, Practice, Industrial Applications, and Properties of Materials Hassell Street Press John Yarwood 1995
Vacuum Technology: Practice for Scientific Instruments Springer Nagamitsu Yoshimura Sep. 2007
The Foundations of Vacuum Coating Technology Elsevier Donald M. Mattox Aug. 2008
Foundations of Vacuum Science and Technology William Andrew James M. Lafferty 1998
Vacuum: Science, Technology and Applications CRC Press Pramod K. Naik Jan. 2018
Flow of Fluids Crane Technical Paper No. 410 Flow of Fluids Through Valves, Fittings, and Pipe U.S. Version 2018 Crane Co. Crane Co. Jan. 2018
Handbook of Vacuum Technology Wiley-VCH Karl Jousten; Wiley-VCH Jun. 2015
Vacuum Technology in the Chemical Industry Wiley-VCH Wolfgang Jorisch Mar. 2015
Total Pressure Measurements in Vacuum Technology Academic Press, Inc. A. Berman May. 1985
A User's Guide To Vacuum Technology John Wiley & Sons John F. O'Hanlon Apr. 2003
Handbook of Vacuum Science and Technology Elsevier Dorothy M. Hoffman 1997
Vacuum Physics and Technology Elsevier Editorial department Nov. 2013
Industrial Vacuum 101 (Second Edition: The Basics of Vacuum Technology) CreateSpace Independent Publishing Platform Dan Bott Sep. 2013
Vacuum Engineering Calculations, Formulas, and Solved Exercises Elsevier Armand Berman Dec. 1992
Vacuum Technology, 3rd Edition North Holland A Roth Dec. 2012
Method of Experimental physics (vol. 14) Academic Press, Inc. G. L. Weissler 1979