ENGINEER: Greg Eckard
DATE:
CALC NO.: 1000816-821 ASME REV NO.: 00
THE FOLLOWING PARAMETERS APPLY TO THIS HEAT EXCHANGER DESIGN:
P = 175.000 psi DESIGN PRESSURE (UG-21, Appendix 3)
A = 5104.755 sq in PRESSURE AREA
d = 47.677 inches SHORT SPAN (fig. UG-34 sketch j)
D = 107.070 inches LONG SPAN (UG-34b)
G = 473.543 inches GASKET PERIMETER (Appendix 2-3)
Hg = 2.264 inches GASKET MOMENT ARM (Appendix 2-3, table 2.5.2)
L = 339.536 inches TIE BAR PERIMETER (UG-34b, Appendix 2-10)
C = 0.300 UG-34 d sketch j
b = 0.188 inches Appendix 2-3, Table 2-5.2, figure (1a) or (1b)
m = 1.000 ELASTOMER 75A SHORE (Table 2-5.1, Appendix 2-3)
y = 200.000 psi ELASTOMER 75A SHORE (Table 2-5.1, Appendix 2-3)
BOLT (TIE BAR) DESIGN
REFERENCE: APPENDIX 2 - MANDATORY
MATERIAL: SA-193 GR B7
Sa = 25000 psi @ ATMOSPHERIC TEMPERATURE
Sb = 25000 psi @ DESIGN TEMPERATURE
BOLT LOAD:
DESIGN CONDITIONS: Wm1 = A*P+2b*G*m*P Appendix 2-5, formula 1
GASKET SEATING: Wm2 = b*G*y Appendix 2-3 & 2-5 (formula 2)
NOTE: THE FORMULAS HAVE BEEN MODIFIED FOR NONCIRCULAR GASKETS
Wm1 = 924408.38 lbf
Wm2 = 17757.86 lbf
TOTAL BOLT AREA REQUIRED IS THE GREATER OF THE FOLLOWING (Appendix 2-3 & 2-5d):
DESIGN CONDITIONS: Am1 = Wm1/Sb = 36.976 sq in
GASKET SEATING: Am2 = Wm2/Sa = 0.710 sq in
TOTAL BOLT AREA SUPPLIED:
SIZE 1 M48 x 5 QTY (n1) 20
SIZE 2 QTY (n2) 0
BOLT TENSILE AREA (As) = 0.7854 * (D - 0.9382 * P) ^ 2
Note: D is the bolt diameter, P is the bolt pitch
TOTAL AREA (Ab) = As1 * n1 + As2 * n2 45.668 sq in
TOTAL BOLT AREA SUPPLIED (45.668 sq in) IS GREATER THAN REQUIRED (36.976 sq in)
03-Feb-11
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