The Museum of HP Calculators

Heat Exchangers Cross Flow Subroutine for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the HVAC Solution Book. This program was entered and uploaded by Tony Duell.

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "ACON"
 02 0
 03 STO 19
 04 1
 05 RCL 10
 06 CHS
 07 STO 21
 08 +
 09 LN
 10 CHS
 11 STO 11
 12 LBL 13
 13 RCL 11
 14 XEQ "ECON"
 15 RCL 10
 16 -
 17 STO 20
 18 RCL 19
 19 RCL 11
 20 STO 19
 21 -
 22 RCL 21
 23 RCL 20
 24 STO 21
 25 -
 26 /
 27 *
 28 ST- 11
 29 ABS
 30 1 E-4
 31 X<=Y?
 32 GTO 13
 33 RCL 11
 34 RTN
 35 LBL "ECON"
 36 RCL 11
 37 RCL 07
 38 /
 39 ENTER
 40 ENTER
 41 .22
 42 Y^X
 43 RCL 09
 44 /
 45 /
 46 LASTX
 47 X<>Y
 48 CHS
 49 E^X
 50 1
 51 -
 52 *
 53 E^X
 54 CHS
 55 1
 56 +
 57 END

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