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Trailing-Edge - PDP-10 Archives - decuslib10-01 - 43,50144/gcvsiz.bas
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```00020	GO TO 500
00025	DATA 60 , 100 , 29.8
00029	DATA 6E36,0,0
00039	PRINT"RATIO OF HIGH/LOW COEFF.=REQUIRED VALVE RANGEABILITY."
00040	PRINT
00041	PRINT"*** THE IDENTITY OF THE VALVE IS"
00046	IF F=6E36 THEN 9999
00050	PRINT
00055	PRINT
00060	LET N= F/M
00065	LET Q= (N*10.72*520)/14.7
00070	PRINT "WHEN FLOW IN PPH =" F, "FLOW IN SCFH =" Q
00075	PRINT
00080	PRINT "TEMP IN DEG F","INLET PSIG","OUTLET PSIG","PRESS DROP PSI",
00081	PRINT "VALVE COEFF."
00085	IF (P2+14.7)/(P1+14.7) < .5 THEN 100
00090	LET H=(P1+14.7)-(P2+14.7)
00095	GO TO 105
00100	LET H=(P1+14.7)/2
00105	LET G=M/29
00110	FOR T=(A+460) TO (B+460) STEP (B-A)
00115	LET X=SQR((G*T/(H*(P1+P2+29.4))))
00120	LET C0=(Q*X)/963
00125	PRINT (T-460),P1,P2,H,C0
00130	NEXT T
00140	GO TO 45
00500	PRINT"THIS PROGRAM CALCULATES GAS AND VAPOR (BUT NOT STEAM)"
00505	PRINT"CONTROL VALVE COEFFICIENTS AND ALLOWS YOU TO DETERMINE"
00510	PRINT"REQUIRED VALVE RANGEABILITY. REFERENCE IS EQUATION 4 OF"
00515	PRINT"THE VOLUNTARY STANDARD AGREED TO IN NOV.,1961 BY THE"
00520	PRINT"FLUID CONTROLS INSTITUTE, INC."
00525	PRINT
00530	PRINT"WHEN PRESS. DROP IS CRITICAL, THE PROGRAM ASSUMES OUTLET"
00535	PRINT"PRESSURE IS HALF THE ABSOLUTE INLET PRESS. THE PROGRAM"
00540	PRINT"ALSO CONVERTS PRESS. AND TEMP. TO ABSOLUTE."
00545	PRINT
00550	PRINT"TYPE: 20 DATA (ENTER IN ORDER.....MIN. TEMP. IN DEGREES"
00555	PRINT"         F, MAX. TEMP. IN DEGREES F, MOLECULAR WEIGHT."
00560	PRINT
00565	PRINT"TYPE: 25 DATA (ENTER DATA IN GROUPS OF 3, AS MANY GROUPS"
00570	PRINT"         AS YOU NEED, IN THIS ORDER.....PPH FLOW,INLET"
00575	PRINT"         PSIG, OUTLET PSIG, 2ND FLOW, 2ND PRESS., ETC..."
00580	PRINT
00590	PRINT
00595	PRINT"TYPE: RUN"
00600	PRINT
00605	PRINT"TO SIZE MORE VALVES, ENTER MORE DATA IN LINES 20 AND 25"
00610	PRINT"THEN TYPE RUN"
09999	END

```