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Carbon dioxide system design analysis by computer

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Abstract

Encouraged by the successful application of the computer to calculating sprinkler systems, 3M undertook a similar project for carbon dioxide systems. The authors discuss the procedures followed for developing and using an appropriate computer program.

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Abbreviations

CODE :

control number

CON :

control number

CV :

number of check valves in this section

CV E.L. :

equivalent length of check valve, ft

CYL :

indicates cylinder starts this section

CYL E.L. :

equivalent length of cylinder heads, ft

D :

diameter, in

DIST :

distance, ft

EL :

equivalent length, ft

ELEV :

elevation, ft

GUC :

number of gate valves, unions, and couplings

L :

length of pipe, ft

LOC :

location of nozzles (end junction)

PE :

elevation pressure, psi

PS :

start pressure, psi

PT :

terminal pressure, psi

Q :

flow, lbs/min

R/A :

rate of application, lbs/min

SL :

start length, ft

SV :

number of selector valves

SV E.L. :

equivalent length of selector valve

T(S) :

number of side flow tees

T(T) :

number of through flow tees

TYPE :

control number

45:

number of 45-degree elbows

90:

number of 90-degree elbows

References

  1. “Standard on Carbon Dioxide Extinguishing Systems,” NFPA No. 12, National Fire Protection Association, 1966.

  2. Hesson, James C., “Pressure Drop for Two-phase Carbon Dioxide Flowing in Pipelines” (unpublished M.S. thesis, Illinois Institute of Technology), 1953.

  3. Williamson, H. V., “Carbon Dioxide Flows in Pipes and Nozzles,” NFPAQuarterly, Vol. 53, No. 1, July 1959, pp. 70–82.

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Author information

Authors and Affiliations

  1. Minnesota Mining and Manufacturing Company, USA

    R. K. Barker SFPE & C. G. Sprado

Authors
  1. R. K. Barker SFPE
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  2. C. G. Sprado
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Additional information

Note: Based on a paper copyrighted by the Minnesota Mining and Manufacturing Company, 1967.

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Barker, R.K., Sprado, C.G. Carbon dioxide system design analysis by computer. Fire Technol 3, 306–313 (1967). https://doi.org/10.1007/BF02588990

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  • DOI: https://doi.org/10.1007/BF02588990

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