[TRNSYS-users] WEIRD TIME STEP (URGENCY)

[Marcus]

Hi Wang, sorry to hear you are still having troubles. Unfortunately your
problem sounds too complicated to debug by email! Some general techniques
you can apply;

- Try to isolate and simplify your system; create a Minimum Working
Example, and rebuild slowly from there
- Swap out TRNSYS types with simpler ones
- Run the system with constant inputs
- Use the compiler and debug your system line by line (very last resort!)

Good luck,

Marcus
--
Marcus Jones,  M.Sc., LEED(R)AP BD+C
*Freelance energy consultant*
*Vienna, Austria*


2011/11/25 王洋 <wanghongyang1767 at gmail.com>

> Dear all,
>
> STILL for CO2 concentration issue, I defined two adults in one zone. One
> guy produces CO2 20 L per hour, two guys 40 L. The zone volume is 100 m^3.
> I defined The outdoor CO2 concentration is 400 ppm, there is no cracks in
> the zone. After 1 hour, indoor CO2 concentration should increase 40/100 000
> = 400 ppm. After 1.5 hours, it should increase 60/100 000 = 600 ppm. I.e.
> at this time indoor CO2 concentration is 400 + 600 ppm = 1000 ppm.
>
> However, there is a WEIRD result: when I set the time step as 1 min, only
> about 0.8 hour indoor CO2 concentration increases to 1000 ppm. when I set
> the time step as 3 min (0.05 h), about 1.5 hours it becomes 1000 ppm.
>
> PLEASE relative experts explain it! I should believe which one? So how can
> TRNSYS/TRNFlow make me believe you? there is still having the former
> another WEIRD PID controller ISSUE which is still WEIRD from last week
> until now. There is still no one who can solve that ISSUE.
>
> Many thanks in advance!
>
> br
>
> wang
>
>
> 在 2011年11月24日 下午10:36，wangyang <yang.wang at unibw.de>写道：
>
>
>>
>>
>>
>> 2011/11/24 <trnsys-users-request at cae.wisc.edu>
>>
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>>>   1. connection between collector and weather (??)
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>>> ---------- 已转发邮件 ----------
>>> From: 瞳瞳 <ilyt2000 at gmail.com>
>>> To: trnsys-users at cae.wisc.edu
>>> Date: Thu, 24 Nov 2011 14:54:17 +0100
>>> Subject: [TRNSYS-users] connection between collector and weather
>>> Dear all,
>>>
>>> i want to make a connection between TYPE 301 and TYPE 109. But i am not
>>> sure ,what i should do .
>>>
>>> Can someone help me?
>>>
>>> THX a lot
>>>
>>> Best regards
>>>
>>> Leona
>>>
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-- 
Marcus Jones,  M.Sc., LEED(R)AP BD+C
*Freelance energy consultant*
*Vienna, Austria*
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