[TRNSYS-users] Boundary condition & infiltration

[王洋]

Dear all,

 Happy Chinese New Year!

 I have a question about Boundary Temperature:

If I defined Boundary walls and their boundary temperature as 10 C,
meanwhile, I defined Infiltration rate as 0.5.
Please tell me at this time wheather the infiltration works? Or what other
weather conditions must I define the infiltration will work?

Because I got the results of QHEAT which are the same when the infiltration
is on or off.

Please give me some advices!

Many thanks!

2011/2/6 <trnsys-users-request at cae.wisc.edu>

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> Today's Topics:
>
>   1. Re: steam producction in a tank with a heater coil inside
>      (Jeff Thornton)
>   2. unmet cooling load with Type 665. (simge andolsun)
>
>
> ---------- 已转发邮件 ----------
> From: "Jeff Thornton" <thornton at tess-inc.com>
> To: "Antonio Aguirre Glez. de San Pedro" <aaguirresp at gmail.com>,
> trnsys-users at cae.wisc.edu
> Date: Sat, 5 Feb 2011 16:28:32 -0600 (CST)
> Subject: Re: [TRNSYS-users] steam producction in a tank with a heater coil
> inside
> The answer depends on whether you are producing steam in the tank or just
> heating water.  If you are just heating water then Type 534 from the TESS
> Libraries will do a great job.  If you're intent on producing steam I don't
> believe there is a steam heater with storage - there are quite a few without
> storage though...
>
> Jeff
>
> Jeff Thornton
> President - TESS, LLC
>
> 22 North Carroll Street - Suite 370
> Madison WI 53703 USA
>
> Phone: 608-274-2577
> Fax: 608-278-1475
> E-mail: thornton at tess-inc.com
> Web: www.tess-inc.com
>
>
>
> *----- Original Message -----*
> *From:* "Antonio Aguirre Glez. de San Pedro" <aaguirresp at gmail.com>
> *Sent:* Fri, Feb! ruary 4, 2011 1:27
> *Subject:* [TRNSYS-users] steam producction in a tank with a heater coil
> inside
>
> Hello,
> I would like to simulate the behavior of  one installation with a tank full
> of water heated with a coil that is connected to a boiler. Does anybody know
> if there is any type that could do this with? or any idea....
> thanks in advance
> Antonio <trnsys-users at cae.wisc.edu>
> ------------------------------
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>
> ---------- 已转发邮件 ----------
> From: simge andolsun <simgeandolsun at gmail.com>
> To: TRNSYS-users at cae.wisc.edu
> Date: Sat, 5 Feb 2011 18:40:47 -0600
> Subject: [TRNSYS-users] unmet cooling load with Type 665.
> Hi!
>
> I modeled a 20m*20m*3m building with a 3m high unconditioned attic. I
> defined the attic as a separate zone and conditioned only the
> inhabited space (SPACE1) below. I used type 665 to model an air-source
> heat pump system and tried to meet the heating and cooling loads of
> the inhabited space (SPACE1). I am sending the necessary files as
> attached to this file. Attached folder also contains the window data
> file (W4-lib) and the weather file (austintxDOE2EPW) that you will
> need to run the file. You can run the file and see that, during the
> summer, the temperature of the inhabited space (SPACE1) exceeds the
> cooling setpoint temperature while cooling rate stays almost constant.
> This made me think that there might be a cooling coil capacity limit
> somewhere, which I could not figure how to modify/change. I suppose
> TRNSYS actually autosizes the cooling coil in Type 665. What might be
> the parameter that is limiting this capacity? ...or is there some
> other reason? Could you please help me figure out why I am not able to
> meet the cooling loads in the attached model?
>
> Thanks in advance for your time,
> Best Regards,
> Simge Andolsun
>
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