Case Study-Steam Jet Ejector

Post on 18-Nov-2014

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“No Artist desires to prove anything. Even things that are true can be proved” ------ OSCAR WILDE

JOURNEY OF STEAM

TERMINOLOGY

P&ID (A-05732 SH. 1/3)

LPST-2145-24”-400-IRWVAC-7153-92”-410-IRW (Approx. 52m long)

3D MODEL

LPST-2145-24”-400-IRW

EXAPNASION JOINT

EJECTOR (approx. 46 ‘ long)

EXAPNASION JOINT

VAC-7153-92”-410-IRW (Approx. 52m long)

NOZZLE: EFFECT-8

MOUNTING

MOUNTING

IN TOTALITY

DETAILS

DETAILS

EJECTOR TYPE

SPECIFICATIONS

Manufacturer Croll-ReynoldsEquipment Tag No. 182EG-005IDE Catalogue No. EJTS999044 IDE specification document EP-15003

End Connections

Suction & Discharge - 78" AWWA C207-86 Class D Motive Steam - 20" Class 150 , B16.5

MS

SD

D

VENDOR DATA

Through linear interpolation :

v@190 deg-C & 5 bar = 0.3836 + (30/40)X(0.4249-0.3836)

= 0.4146 cubic-m / Kg

So 82.6 ton / Hr = 0.4146X82.6 X1000 = 35000 cubic-m / Hr (approx.)

FLOW RATE

VENDOR DATA AND LINE LIST

Considering the Pressure-drop in line LPST-24”-400-IRW it is quite clear that the Working pressure of this line and Flow rate are compatible with the Vendor data of Steam jet ejector.

Line List Data (LPST-2145-24"-400-IRW)

Max. Working Pr. (Bar-a) 5

Min. Working Pr. (Bar-g) 5.5

Temp. (Deg-C) 129

Flow Rate (cubic-m/Hr) 36000

VENDOR DATA : OFFSET DESIGN CONDITIONS

Pr. (Bar-a) 5.2

Temp. (Deg-C) 129

Flow Rate (cubic-m/Hr) 35000

THERMODYNAMIC STATES

Superheated Steam

Saturated Vapor

Mixture