RE: Re: [EnergyPlus_Support] radiant panels

[<jeannieboef@xxxxxxxxx>]

you are kind of reaching the limits of the simulation program here...I take it you want to know how to best model a chilled ceiling suspended from an active core cooled slab. There are a couple of options, with pros and cons.



1) create a seperate "plenumn" zone for the hanged ceiling space

or

2) create a zone internal surface, in which you can imbed the internal source.



Normally, I would opt for 1) in combination with an appropriate zoneairmixing object setup.



The cons of using 2) include:

- radiation exchange is only considered in one direction ("towards the zone" relative to facing direction)

- neglected internal daylighting considerations

- convection considerations (also only to one facing side)



---In EnergyPlus_Support@xxxxxxxxxxxxxxx, <a_tzoulis@...> wrote:

Ok but this is the way you add a heated floor or a chilled ceiling which is not exactly what I want to do.
In my model I have created a thermally activated layer in each slab and therefore it is not possible to add a second internal source in the same construction.
add a construction or a plenum only at a part of the ceiling? If this is possible I think that this can be modelled as a construction with a highly conductive material which radiates according to the water temperature it flows inside.
Regards,
Athinodoros Tzoulis 

On Wednesday, November 27, 2013 2:00 AM, Jeremiah Crossett <jcrossett@...> wrote:

Yes, using construction internal source and a fluid loop.  Check IO..


Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions
120 E. Pritchard St.  | Asheboro, NC 27203 
 | Mobile 503-688-8951
<http://www.phasechange.com/>www.phasechange.com 



> 
> 
> On Tue, Nov 26, 2013 at 4:51 PM, Athinodoros Tzoulis <<mailto:a_tzoulis@...>a_tzoulis@...> wrote:
>>  


	 Hi, 
>> 
>> Is there a way to model radiant panels (panels in which cold and hot water flows) as a cooling and heating equipment in EnergyPlus with their properties (tubing distance, inner tube diameter, etc.)? 
>> 
>> Thank you in advance 
>> 
>> Best regards, 
>> Athinodoros Tzoulis





__._,_.___

Primary EnergyPlus support is found at:
<http://energyplus.helpserve.com>http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
<http://www.energyplus.gov>http://www.energyplus.gov

The group web site is:
<http://groups.yahoo.com/group/EnergyPlus_Support/>http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.


<http://geo.yahoo.com/serv?s=97476590/grpId=3387488/grpspId=1705007389/msgId=30774/stime=1385553797>

Your email settings: Individual Email|Traditional
<http://groups.yahoo.com/group/EnergyPlus_Support/join;_ylc=X3oDMTJmbGlsbmJjBF9TAzk3NDc2NTkwBGdycElkAzMzODc0ODgEZ3Jwc3BJZAMxNzA1MDA3Mzg5BHNlYwNmdHIEc2xrA3N0bmdzBHN0aW1lAzEzODU1NTM3OTc->Change settings via the Web (Yahoo! ID required)
Change settings via email: <mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx?subject=Email Delivery: Digest>Switch delivery to Daily Digest | Switch to Fully Featured
<http://groups.yahoo.com/group/EnergyPlus_Support;_ylc=X3oDMTJkM2NxOHI4BF9TAzk3NDc2NTkwBGdycElkAzMzODc0ODgEZ3Jwc3BJZAMxNzA1MDA3Mzg5BHNlYwNmdHIEc2xrA2hwZgRzdGltZQMxMzg1NTUzNzk3>Visit Your Group  | <http://info.yahoo.com/legal/us/yahoo/utos/terms/> Yahoo! Groups Terms of Use  | <mailto:EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> Unsubscribe

__,_._,___