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

[EnergyPlus_Support] Re: Water to water ground source heat pump without PA air



Where is the spreadsheet mention by Edwin.  I am trying to create performance curves for water to water heat pumps  based on the parameter estimation model.  The paper is also difficult to understand.

Thank You!
Jay



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Edwin Lee <leeed2001@...> wrote:
>
> Dashamir:
> 1) WWHP:  If you look at the EngineeringReference document, you can see the
> definitions for all coefficients and parameters for the water to water heat
> pump.  Most likely your heat pump will not line up with the same
> coefficients as the example data, and this can lead to odd results.  These
> coefficients must be developed from catalog data.  There is a spreadsheet
> tool available to calculate coefficients, and an improved tool is being
> developed (almost beta stage) to develop these coefficients.
> 
> 2) GLHE:  The g-functions are very important to the stability of the GLHE
> model in E+.  There is a dataset that includes some example g-functions for
> different borehole configurations.  If you are doing anything in depth with
> boreholes, you will want to move to a separate software.  A program called
> GLHEPro is available from Dr. Jeff Spitler at Oklahoma State University.
> 
> Good luck...
> Edwin
> 
> On Wed, Mar 18, 2009 at 8:25 AM, dashamir marini
> <dashamirmarini@...>wrote:
> 
> >   Hi   Mr. James
> >
> > Saw your respond for Ashok, also I'm trying to do one simulation with
> > water-to-water heat pump systems, without combination of Purchased system.
> >
> > I'm having two troubles about this simulation:
> >
> > 1) The firs one is about Heat Pump Water to Water:EquationFit for
> > Heatin&Cooling input data,
> > in my case rated heating capacity is nearly 25000 W while in example file
> > is 34040,92 W.
> > My trouble is, can I use the same coefficients of GshpHeating and
> > GshpCooling used in example file
> > respectively for heating and coolin as in my example ? and how is defined
> > Rated Heating Power Consumption valuei example.
> >
> > 2) the second is about Grount Heat Exchanger Vertical similar trouble like
> > first. I dont know how have to determine the values of this object
> > for example: number ohf boreholes, bore hole length and radius, ground,
> > pipe, and fluid parameter parameters also G and LN/LTs values.
> >
> > In few word don't know how have to fill these object in my case which have
> > different heating/cooling capacity
> > and different site location so different ground parameters.
> >
> > thanks in advance
> >
> > waiting for your answer
> >
> > all the best
> > Dashamir
> >
> >
> >
> >
> > ------------------------------
> > *From:* James V. Dirkes II P.E. <jvd2pe@...>
> > *To:* EnergyPlus_Support@xxxxxxxxxxxxxxx; energyplus-support@...
> > *Sent:* Wednesday, March 11, 2009 12:28:34 PM
> > *Subject:* RE: [EnergyPlus_Support] Water to water ground source heat pump
> > without PA air
> >
> >  Try "GroundHeatExchange r:Vertical"
> >
> >
> > *The Building Performance Team
> > **James V. Dirkes II, P.E., LEED AP
> > *1631 Acacia Drive NW
> > Grand Rapids, MI 49504
> > 616 450 8653
> >
> >
> >
> >
> >  ------------------------------
> > *From:* EnergyPlus_Support@ yahoogroups. com [mailto:EnergyPlus_Support@yahoogro
> > ups.com] *On Behalf Of *ashok
> > *Sent:* Wednesday, March 11, 2009 1:46 AM
> > *To:* energyplus-support@ gard.com; EnergyPlus_Support@ yahoogroups. com
> > *Subject:* [EnergyPlus_ Support] Water to water ground source heat pump
> > without PA air
> >
> >  Dear All
> >
> > Is it possible to simulate with Water to water ground source heat pump with
> >
> > vertical borehole ground loop heat exchanger without combination of
> > Purchased system.
> >
> > Thanks in advance
> > Ashok
> >
> >
> >  
> >
>




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

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 not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

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:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto: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/