[EnergyPlus_Support] Re: Regarding the problem of Cooling Coil sizing

["Jean marais" <jeannieboef@xxxxxxxxx>]

Air has a limited ability to transport energy (Cp is about 1.005 from memory). This means that if your flowrates are too low, even at very cold zone supply air temperatures, you simply can't bring in enough cooling. The physical coil has limitations which the model is trying to capture. For example, in theory you could indefinately increase the chilled water mass flowrate through the coil to no effect, because the the coil surface area is limited as is the air movement over the surface.

The program is telling you that it is increasing it's size and thereby its rated capacity to meet the required cooling rate at the very low air flow rates that you specified.

Is this what is happening here?



------------------------------------

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/