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[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
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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@tess-inc.com>
To: "Antonio Aguirre Glez. de San Pedro" <aaguirresp@gmail.com>, trnsys-users@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@tess-inc.com
Web: www.tess-inc.com
----- Original Message -----From: "Antonio Aguirre Glez. de San Pedro" <
aaguirresp@gmail.com>
Sent: Fri, Feb! ruary 4, 2011 1:27
Subject: [TRNSYS-users] steam producction in a tank with a heater coil inside
---------- 已转发邮件 ----------
From: simge andolsun <simgeandolsun@gmail.com>
To: TRNSYS-users@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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