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RE: Type 51

Dear Gopu Sridhar,

The warning you mention occurs when Type51 reads the file with performance
data and tries to fit the parameters of a performance correlation on this
data.

The cause of the problem might be an aberrant data point in your file, but
it is also possible that the fitting algorithm diverges due to poorly
conditioned data.

If you cannot identify the cause of the problem just by looking at the input
data, you can step through the code using a debugger.

Cheers,

Michael

_________________________________________________

Michael Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg
1500 Engineering Drive
Madison, WI 53706

Phone: +1 (608) 263-1589
Fax: +1(608) 262-8464
E-mail: kummert@sel.me.wisc.edu <mailto:kummert@sel.me.wisc.edu>

SEL Web Site: http://sel.me.wisc.edu <http://sel.me.wisc.edu>
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys
<http://sel.me.wisc.edu/trnsys>




-----Original Message-----
From: owner-trnsys@relay.doit.wisc.edu
[mailto:owner-trnsys@relay.doit.wisc.edu]On Behalf Of sridhar gopu
Sent: Monday, July 15, 2002 04:57
To: trnsys@relay.doit.wisc.edu
Subject: Type 51


Hello Trnsys users!,

   Any body worked with TYPE 51B. I am getting one
warning some thing like mentioned below
----------------------------------------------------
  ***** WARNING *****  UNIT 21 TYPE 51 COOLING TOWER
    THE CORRELATION FOR THE SATURATION TEMPERATURE
GIVEN THE SATURATION
    ENTHALPY USED IN THE COOLING TOWER MODEL WAS USED
WITH AN ENTHALPY OF
     413.4 KJ/LBM DRY AIR.  THE CORRELATION WAS
INTENDED TO BE USED IN THE
    RANGE OF 9.473 KJ/LBM DRY AIR TO 355.137 KJ/LBM
DRY AIR.
-----------------------------------------------------

any body knows how to avoid this warning.

 thanks alot,

regards,
gopu sridhar.


=====
gopu sridhar
student in solar Engineering (Energy)
Hvgskolan Dalarna
Solar Energy Research Center SERC
Dept. of Energy, Environment and Construction
S-78188 Borldnge
phone:+46-073-7144741

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