[TRNSYS-users] WEIRD phenomena

王洋 wanghongyang1767 at gmail.com
Sun Jul 10 12:58:09 PDT 2011


Dear all,



I control OP(window opening factor) in order to make indoor CO2% lower than
0.001476 kg/kg (900 ppm) based on indoor CO2%. I used 2 simple methods:

1) OP=(LT(0.001476, CO2%))*1, i.e. if CO2%>0.001476, OP=1 windows will open
completely;
2) I defined SCHEDULE 001: about every 1 or 2 hours, OP=1 during 15 mins, 6
cycles.

BUT the two methods' results are very weird. to 1): OP is from 0 to 1 then
to 0, there are 6 cycles during 24 h, 1 open/close cycle about only 6 mins,
but FLTOZ: escaping air flow mass about 3000kg in all, CO2% is indeed lower
than 900 ppm; Please see the ATTACHED 1st and 2nd, 3rd is the
Online-plotter. FLTOZ can be seen from the *.out file 4th Attached.

to 2): SCHEDULE 001 is  from 0 to 1, after 15 mins, from 1 to 0, there are
also 6 cycles during 24 h, 1 open/close cycle about 15 mins, ALTHOUGH cycle
time is bigger than 1): 6 mins, FLTOZ: escaping air flow mass about only
1550kg in all (weird), CO2% is higher than 900 ppm sometimes (weird); Please
see the ATTACHED 5th and 6th, 7th is the Online-plotter. FLTOZ can be seen
from the *.out file 8th Attached. SCHEDULE 001 can be found in TRNBUILD
file.

I can't understand why 2)'s opening time is bigger than 1) and its open type
is complete open during 15 mins (like a rectangle), but  FLTOZ (escaping air
flow mass about only 1550kg in all), CO2% is higher than 900 ppm sometimes ,
however, 1)'s open type is from 0 to 1 then to 0 only during 6 mins like a
triangle, but FLTOZ (escaping air flow mass about 3000kg in all), CO2% is
indeed lower than 900 ppm?

Please give me some advices! I think the problem may be TRNSYS and TRNFlow
compatible reason.

Many thanks in advance!

Br.

wang

2011/7/7 <trnsys-users-request at cae.wisc.edu>

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> Today's Topics:
>
>   1. Type 101-CLOSE error (Baboo Gowreesunker)
>   2. type 15-2 weather file (Muhammad Farooq)
>
>
> ---------- 已转发邮件 ----------
> From: Baboo Gowreesunker <Baboo.Gowreesunker at brunel.ac.uk>
> To: "trnsys-users at cae.wisc.edu" <trnsys-users at cae.wisc.edu>
> Date: Thu, 7 Jul 2011 10:32:40 +0100
> Subject: [TRNSYS-users] Type 101-CLOSE error
>
> Hi all****
>
> ** **
>
> I’m running type 101 on a windows 7, 64 bit machine. ****
>
> Everytime I run the simulation, it runs for a few time steps, and then I
> obtain the following error:****
>
> ** **
>
> Forrtl: severe (28): CLOSE error, Unit 10, file “Unknown” Image PC Routine
> Line Source libifcoremd.dll  03DBD3FE  Unknown  Unknown  Unknown****
>
> Stack trace terminated abnormally.****
>
> ** **
>
> I don’t believe its an error in the code because otherwise it would not run
> the few timesteps.****
>
> I don’t know whether it has to do with ‘limited access to C: drive’, where
> libifcoremd.dll is located.****
>
> ** **
>
> Can somebody help me ?****
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
>
> ---------- 已转发邮件 ----------
> From: Muhammad Farooq <engr_farooq85 at yahoo.com>
> To: trnsys-users at cae.wisc.edu
> Date: Thu, 7 Jul 2011 14:56:45 +0100 (BST)
> Subject: [TRNSYS-users] type 15-2 weather file
>
> Hi,
>
>  I am simulating type 1b solar thermal collector using type 15-2 weather
> files.I want to calculate the useful energy of the collector for london
> environment.but the useful energy is in negative,why is that it should be
> positive.take a look of the simulation result below:I have highlighted it
> with the red color. waiting for the reply
>
>               Time                                                   QColl
>
>   +0.0000000000000000E+00                +0.0000000000000000E+00
>   +1.0000000000000000E+00                +0.0000000000000000E+00
>   +2.0000000000000000E+00                +0.0000000000000000E+00
>   +3.0000000000000000E+00                +0.0000000000000000E+00
>   +4.0000000000000000E+00                +0.0000000000000000E+00
>   +5.0000000000000000E+00                +0.0000000000000000E+00
>   +6.0000000000000000E+00                +0.0000000000000000E+00
>   +7.0000000000000000E+00                +0.0000000000000000E+00
>   +8.0000000000000000E+00                +0.0000000000000000E+00
>   +9.0000000000000000E+00                 -2.4173684203587297E+02
>   +1.0000000000000000E+01                 -2.5441648977456410E+02
>   +1.1000000000000000E+01                 +4.8138101649880042E+01
>   +1.2000000000000000E+01                 +1.6144304197108370E+03
>   +1.3000000000000000E+01                 +3.4669850296828163E+03
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
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 	Label not available                                                                                                                                                                                                                                                                                         	
Period	QALFL_S7            	
      +1	  +0.5886686097364873E+01	
      +2	  +0.5874571711756289E+01	
      +3	  +0.5870481887832284E+01	
      +4	  +0.5868694237433374E+01	
      +5	  +0.5868229649495333E+01	
      +6	  +0.5868197861127555E+01	
      +7	  +0.5869541899301112E+01	
      +8	  +0.5870883716270328E+01	
      +9	  +0.5870311190374196E+01	
     +10	  +0.4820322541496716E+03	
     +11	  +0.4815497620473616E+03	
     +12	  +0.5858816583640873E+01	
     +13	  +0.4811787499906495E+03	
     +14	  +0.4811684841499664E+03	
     +15	  +0.5855275082867593E+01	
     +16	  +0.4812460304168053E+03	
     +17	  +0.4816156947053969E+03	
     +18	  +0.5858901953324676E+01	
     +19	  +0.5858938519377261E+01	
     +20	  +0.5861233023460954E+01	
     +21	  +0.5864111830014735E+01	
     +22	  +0.5866574035026133E+01	
     +23	  +0.5867884776089340E+01	
     +24	  +0.5869222800247371E+01	
  
	Maximum Instantaneous Values
	Label not available                                                                                                                                                                                                                                                                                         	
Maximum Value	  +0.9529092121124268E+04	
Time of Maximum	  +0.9449999999999999E+01	
  
	Minimum Instantaneous Values
	Label not available                                                                                                                                                                                                                                                                                         	
Minimum Value	  +0.5852300953119993E+01	
Time of Minimum	  +0.1365000000000000E+02	
  
	Maximum Integrated Values
	Label not available                                                                                                                                                                                                                                                                                         	
Maximum Value	  +0.4820322541496716E+03	
Time of Maximum	  +0.1000000000000000E+02	
  
	Minimum Integrated Values
	Label not available                                                                                                                                                                                                                                                                                         	
Minimum Value	  +0.5855275082867593E+01	
Time of Minimum	  +0.1500000000000000E+02	
  
	Sum (note: sums are set to zero for inputs that were not integrated.)
	Label not available                                                                                                                                                                                                                                                                                         	
Total	  +0.2994399532314856E+04	
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 	Label not available                                                                                                                                                                                                                                                                                         	
Period	Fltoz               	
      +1	  +0.2279031499056146E+01	
      +2	  +0.2114541971823201E+01	
      +3	  +0.2087683409918100E+01	
      +4	  +0.2069744659820572E+01	
      +5	  +0.2070216990541667E+01	
      +6	  +0.2070541474968195E+01	
      +7	  +0.2079835706390440E+01	
      +8	  +0.2094045986887068E+01	
      +9	  +0.2144003083230928E+01	
     +10	  +0.2472861289826687E+03	
     +11	  +0.2294894303195179E+01	
     +12	  +0.2507755868334789E+03	
     +13	  +0.2514201268041506E+03	
     +14	  +0.2328026363393292E+01	
     +15	  +0.2522034974943381E+03	
     +16	  +0.2533673059742432E+03	
     +17	  +0.2539419648761395E+03	
     +18	  +0.2376539027318358E+01	
     +19	  +0.2414686818374321E+01	
     +20	  +0.2426220254274085E+01	
     +21	  +0.2428240020526573E+01	
     +22	  +0.2418394291307777E+01	
     +23	  +0.2399059619056061E+01	
     +24	  +0.2379940110258758E+01	
  
	Maximum Instantaneous Values
	Label not available                                                                                                                                                                                                                                                                                         	
Maximum Value	  +0.1128946709632874E+04	
Time of Maximum	  +0.1655000000000000E+02	
  
	Minimum Instantaneous Values
	Label not available                                                                                                                                                                                                                                                                                         	
Minimum Value	  +0.1782002463005483E+01	
Time of Minimum	  +0.9850000000000000E+01	
  
	Maximum Integrated Values
	Label not available                                                                                                                                                                                                                                                                                         	
Maximum Value	  +0.2539419648761395E+03	
Time of Maximum	  +0.1700000000000000E+02	
  
	Minimum Integrated Values
	Label not available                                                                                                                                                                                                                                                                                         	
Minimum Value	  +0.2069744659820572E+01	
Time of Minimum	  +0.4000000000000000E+01	
  
	Sum (note: sums are set to zero for inputs that were not integrated.)
	Label not available                                                                                                                                                                                                                                                                                         	
Total	  +0.1549470256555360E+04	


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