[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[TRNSYS-users] Bugs in Type3 for pumps/fans

To: Trnsys discussion group <trnsys-users@engr.wisc.edu>
Subject: [TRNSYS-users] Bugs in Type3 for pumps/fans
From: a8304506@graduate.hku.hk
Date: Mon, 9 Mar 2009 10:02:07 +0800
List-archive: <https://www-old.cae.wisc.edu/pipermail/trnsys-users>
List-help: <mailto:trnsys-users-request@cae.wisc.edu?subject=help>
List-id: "TRNSYS users mailing list at the Solar Energy Lab, UW-Madison" <trnsys-users.cae.wisc.edu>
List-post: <mailto:trnsys-users@cae.wisc.edu>
List-subscribe: <https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users>, <mailto:trnsys-users-request@cae.wisc.edu?subject=subscribe>
List-unsubscribe: <https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users>, <mailto:trnsys-users-request@cae.wisc.edu?subject=unsubscribe>
User-agent: Internet Messaging Program (IMP) 3.2.2

Hello, Trnsys users.

I previsously simulated a system containing pumps and fan, all using Type3
component.  When I try to output the power consumption of the fan, I just got a
zero value.  By further investigating the source code for Type3, I think that
there are two bugs.  The variable "CF" should be declared as "DOUBLE PRECISION"
rather than "INTEGER".  The statment "NP=INFO(4)" shoud be added after the
control statement "IF(INFO(1).NE.IUNIT) THEN" to reset the value of "NP" when
there are more than one Type3 in the same system.  After modifying the source
code for Type3, the expected result was obtained.

Best Regards
LEE, Chun Kwong
Division of Building Science and Technology
City University of Hong Kong

Prev by Date: Re: [TRNSYS-users] HOW TO AVOID DIVISION BY ZERO?
Next by Date: [TRNSYS-users] Condensation Warning
Previous by thread: [TRNSYS-users] HOW TO AVOID DIVISION BY ZERO?
Next by thread: [TRNSYS-users] Condensation Warning
Index(es):
- Date
- Thread