[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [EnergyPlus_Support] RE: Can E+ model open loop ground heat exchanger?



Hi Jean,

As I reckon heat transfer mechanisms between pond (E+ for this type object is still closed loop through water coils, but even it can be an open loop) and aquifer as deep water (no expose to sun neither to ambient air) should be totally different. EnergyPlus engineering reference details the calculation for a pond ground heat exchanger, due to lacking of open loop vertical ground heat exchanger object, there is no way of comparison on heat transfer regimes between these two. Personally think cooling tower might be a best alternative if we can control return water temperature to a specific value imitating aquifer temperature. Really not sure if this is a logic approach.

Sean



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

Can't you say that your open loop is actually a closed loop with an infinite pond size?


2014-01-28 <seanking.1970@...>
 

Hi Jeremiah,

Thanks for the suggestions, but both pond and surface ground heat exchangers are using closed loops, which do not meet our need.

Sean



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

I am confused, 
Why not just use the Ground Heat Exchanger Pond or  Ground Heat Surface? 
I have not used these, but may in the future, so wonder if there is some reason you are not?  ((see inline image from IDF editor)) 

Inline image 1



Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions
120 E. Pritchard St.  | Asheboro, NC 27203 
 | Mobile 503-688-8951
  





On Mon, Jan 27, 2014 at 4:03 AM, <seanking.1970@...> wrote:
 

Does not show attachment?





__._,_.___


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.



Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___