[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[EnergyPlus_Support] Re: Help a student for an HVAC modelling on E+
Thank you for your answers.
Witch HVAC template do you think I should take in E+ ?
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
>
>
> See comments in red below.
> Dr. Li To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: rockcolomiers@...
> Date: Wed, 28 Sep 2011 07:45:35 +0000
> Subject: [EnergyPlus_Support] Re: Help a student for an HVAC modelling on E+
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Thank you for your informations Dr Li.
>
>
>
> But what does OA mean ? Outdoor Air
>
>
>
> It's only one part of the system, the other is the hot/cold water supplying by an another company.
>
>
>
> What is TF001 and FF001 ? Fans in charge to propel air ? These are location or equipment names. When different parts of the installation are displayed, these will change.
>
> So VS100 is to heating air (in the lower path), but why put after that the KB101 (air cooling system). A monitoring display shows all the components in the installation in that section.
>
>
>
> Does the rotative heat exchanger work only with air and not with hot/cold water ? This is just a way to show on the display. The real equipment may not be rotating. The rotating color arrow show that the cold air goes up and hot air comes down.
>
>
>
> I'm sorry for my dumb questions, but I'm in Sweden, don't speak swedish so it's hard to understand this system. The picture and the system and the temperature are still universal.
>
>
>
> Another thing, more you have flow (m^3/s), less is the pression, isn't it ? Depends. In a pipe with changing diameter, your statement is correct. With a pump or fan, more pressure is need to force the mass flow rate through the duct or pipe.
>
>
>
> Thx !
>
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@> wrote:
>
> >
>
> >
>
> > I think, your diagram is a 100% OA system with pre-heat. The zone and plants are not shown. The plant connections to the coils and the flow rate are shown. I do not know the language, but deduced the operation by looking at the colour, arrows, and the temperature values. The lower path is the OA inlet, pre-heat exchanger, fan, coils, to outlet to the zones The upper path is the turn air path. I am assuming that it is an air loop. The environment is at 14.7°C. Pre-heat raised this to 19.5°C and then to 20.3°C by the heating coil. The return air is at 22.0°C, and is reduced to 18.1°C after the heat exchanger. There are other values for relative humidity, pressures, etc. Some may be range limits.Blue is cold, and red is warmer. The system is in the heating mode. The diagram looks like a commonly used computer controlled system display screen. The use of this type of diagram is to centralize the monitoring of the plants for a large installation. There may be other diagrams for different part of the system. Those running EPlus should have a few of these diagrams so that the system node values can be filled in readily for system debugging purposes. The diagram posted, I think, is only part of the installation.
>
> >
>
> > Dr. Li
>
> > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
>
> > From: rockcolomiers@
>
> > Date: Tue, 27 Sep 2011 13:47:39 +0000
>
> > Subject: [EnergyPlus_Support] Re: Help a student for an HVAC modelling on E+
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> >
>
> > Hey,
>
> >
>
> >
>
> >
>
> > I took on picture of the system view by the software.
>
> >
>
> >
>
> >
>
> > But I don't understand how it's work, where is the air input and output, air recycling, cooling zone...
>
> >
>
> >
>
> >
>
> > someone could help me ? I never study this kind of system at school...
>
> >
>
> > http://imageshack.us/photo/my-images/823/unledxpt.png/
>
> >
>
------------------------------------
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
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.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/EnergyPlus_Support/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/EnergyPlus_Support/join
(Yahoo! ID required)
<*> To change settings via email:
EnergyPlus_Support-digest@xxxxxxxxxxxxxxx
EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/