[TRNSYS-users] TRNSYS-users Digest, Vol 157, Issue 26

[Amit Verma]

Hello Everyone,

I am doing a project on type 94 (PV Module) . I have to find dust effect on
PV module's Efficiency. Please suggest me how to enroll it with PV module .


Kind Regards
Amit Verma


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On Thu, Jan 25, 2018 at 6:00 AM, <trnsys-users-request at lists.onebuilding.org
> wrote:

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> Today's Topics:
>
>    1. airchange between zones (Alex moreno)
>    2. Re: airchange between zones (David BRADLEY)
>
>
> ---------- Forwarded message ----------
> From: Alex moreno <alamoreno19 at hotmail.com>
> To: trnsys_users <trnsys-users at lists.onebuilding.org>
> Cc:
> Bcc:
> Date: Wed, 24 Jan 2018 14:22:02 +0000
> Subject: [TRNSYS-users] airchange between zones
> Hi
>
> I have a doubt when i modeling a single family building with two floors,
> how i can connect the airchange between of  two zones (first floor and
> second floor)
>
> another doubt is:
>
> Firstly i simulated the two floors us one zones, but now i simulate the
> buildign us two zones, the results of heating differ 2% respec of  one
> zone building and differ cooling 10%, it is normally?
>
> regards
>
>
> Alex
>
>
>
> ---------- Forwarded message ----------
> From: David BRADLEY <d.bradley at tess-inc.com>
> To: "TRNSYS users mailing list at OneBuilding.org" <
> trnsys-users at lists.onebuilding.org>
> Cc: Alex moreno <alamoreno19 at hotmail.com>
> Bcc:
> Date: Wed, 24 Jan 2018 16:49:40 -0600
> Subject: Re: [TRNSYS-users] airchange between zones
> Alex,
>
>   When you define an ADJACENT wall (or floor/ceiling) between two zones
> you have the ability to define a coupling air flow rate from each to the
> other. You can set the flow rate as a constant, as a scheduled value, or as
> an input. Type56 leaves it to you to determine how much air flows back and
> forth between the zones.
>
>   The most correct way of determining the quantity of airflow is to use an
> airflow modeling tool such as TRNFlow or Type97/CONTAM.
>
>   It is hard to answer your second question. The answer depends on what
> metrics you are looking at. For instance, I would be surprised to see the
> loads of the building change by 10% based on 1 zone or 2. However, if you
> are looking at consumption of energy by an HVAC system then it is possible,
> especially if you are using a single thermostat to control the system.
>
> kind regards,
>
>  David
>
>
>
> On 01/24/2018 08:22, Alex moreno via TRNSYS-users wrote:
>
>> Hi
>>
>> I have a doubt when i modeling a single family building with two floors,
>> how i can connect the airchange between of  two zones (first floor and
>> second floor)
>>
>> another doubt is:
>>
>> Firstly i simulated the two floors us one zones, but now i simulate the
>> buildign us two zones, the results of heating differ 2% respec of  one
>> zone building and differ cooling 10%, it is normally?
>>
>> regards
>>
>>
>> Alex
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at lists.onebuilding.org
>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>>
>
> --
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 22 North Carroll Street - suite 370
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
>
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