[TRNSYS-users] Indoor/Outdoor Pool Type 344

[Matt Duffy]

Kent,

Not having any experience with type344, I do not what to tell you other than check your timestep. Also, you may want to watch the heaing and cooling season indicator on the online plotter to make sure that makes sense.

Best,

Matt Duffy



----- Original Message -----
From: kbeason at schlitterbahn.com
Sent: Mon, September 28, 2009, 3:53 PM
Subject: Re: [TRNSYS-users] Indoor/Outdoor Pool Type 344


Clarification below
 
 
 

Kent Beason
 
Schlitterbahn Development Group
 
830-609-8904 m
 
 
 


 
From: Kent Beason 
Sent: Monday, September 28, 2009 3:15 PM
To: trnsys-users at engr.wisc.edu
Subject: RE: [TRNSYS-users] Indoor/Outdoor Pool Type 344
 

 
 
With the use of the recompiled DLLs (thx Matt), I’ve started to incorporate forcing functions/equations that govern the (Wind Speed or Indoor Air Speed), (Amb RH or Zone RH), and (Amb temp or Zone temp) with the use of heating and cooling season indicators from Type15. Adding each of these forcing functions one at a time and then testing, I encountered no problems until I added a forcing function/equation for Type344 l to use the Type56 zone temp during heating season and the ambient temp from Type15 during cooling season. As I anticipated, I am having convergence problems in the simulation when it transitions from closed to open pool: the pool temp runs away to the high side. What check might I need to add into the simulation to better implement the transition from closed pool to open pool so there are no convergence problems?
 
 
 

Kent Beason
 
Schlitterbahn Development Group
 
830-609-8904 m
 
 
 


 
From: Matt Duffy [mailto:duffy at tess-inc.com] 
Sent: Monday, September 28, 2009 9:26 AM
To: Kent Beason; trnsys-users at engr.wisc.edu
Subject: Re: [TRNSYS-users] Indoor/Outdoor Pool Type 344
 

 
 
Kent,

Yes, you will indeed have to recompile after making those changes in the source code. Also, make sure the NP, NI, NO are correct for your changes as well.

Best regards,

Matt Duffy


 
 

----- Original Message -----
From: kbeason at schlitterbahn.com
Sent: Mon, September 28, 2009, 6:13 AM
Subject: Re: [TRNSYS-users] Indoor/Outdoor Pool Type 344
 

Do the Type344 DLLs need to be recompiled after modifications to the
source code and proforma? I've changed the source code ("trnsys
declarations", "read parameters", and "read input" sections) and the
proforma to reflect 17 and 9 inputs and parameters, resp, instead of the
original 16 & 10 count. (Parameter 4 was changed to an input and its
Min/Max range was modified to allow switching from indoor to outdoor
pool.) However, I am still getting fatal error messages before the
simulation starts regarding the inconsistency in the number of
parameters and inputs. 

"...17 inputs were supplied and 16 are required..."
Similarly for parameters.

Kent Beason
Schlitterbahn Development Group
830-609-8904 m


-----Original Message-----
From: David Bradley [mailto:bradley at tess-inc.com] 
Sent: Monday, September 21, 2009 1:25 PM
To: Kent Beason
Cc: trnsys-users at engr.wisc.edu
Subject: Re: [TRNSYS-users] Indoor/Outdoor Pool Type 344

Kent,
Changing the window glazing ID to 10001 (no glazing) will allow solar 
to pass unhindered through the building envelope. I am not sure it 
captures all of the changes that you want because when your in 
indoor-pool mode, you want the pool's water mass exchange to occur 
between the pool surface and the trapped zone air. When you go to 
outdoor pool mode, however, the pool exchanges water mass with ambient 
air. I would think that at the least, you would also want to add a very 
large infiltration amount into your zone when you go into outdoor mode. 
As for the switch between indoor and outdoor mode, I took a really quick

look at the component and it looks like if you moved some of the 
parameters to inputs, you could hot-swap the pool model in the middle of

the simulation. If you did that, you could come up with whatever 
algorithm or forcing function you wanted to switch back and forth 
between indoor and outdoor modes.
Kind regards,
David

Kent Beason wrote:
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