[TRNSYS-users] boundary temperature& infiltration

Mon Feb 7 00:53:13 PST 2011

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!

PLUS:I used QINF, but the results are very strange. The results are the same
i.e. 190.73 kJ when turning on or off the INFILTRATION.

many thanks!

br.

wang

在 2011年2月6日 下午7:00， <trnsys-users-request at cae.wisc.edu>写道：

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> Today's Topics:
>
>   1. Boundary condition & infiltration (??)
>
>
> ---------- 已转发邮件 ----------
> From: 王洋 <wanghongyang1767 at gmail.com>
> To: trnsys-users at cae.wisc.edu
> Date: Sun, 6 Feb 2011 16:19:45 +0100
> Subject: [TRNSYS-users] Boundary condition & infiltration
> 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>
>
>> Send TRNSYS-users mailing list submissions to
>>        trnsys-users at cae.wisc.edu
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>>        https://mailman.cae.wisc.edu/listinfo/trnsys-users
>> or, via email, send a message with subject or body 'help' to
>>        trnsys-users-request at cae.wisc.edu
>>
>> You can reach the person managing the list at
>>        trnsys-users-owner at cae.wisc.edu
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of TRNSYS-users digest..."
>>
>> 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>
>> ------------------------------
>>
>> _______________________________________________
>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>>
>>
>>
>> ---------- 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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