[Equest-users] WSHP(Heating HW loop has zero design flow) vs PVVT, PSZ, etc

[Robby Oylear]

Do you have an additional hot water loop that you're no longer using still
in the file?  This message usually pops up when a loop has no load on it,
thus during the sizing runs it gets assigned zero flow.  This happened to a
model I was looking at the other day when a hot water loop served a VAV
reheat system but no Reheat DT had been defined, thus there was no load and
no flow.

Make sure the loop you have connected your system to is the correct type as
well.

Robby Oylear, PE, LEED AP

*Mechanical Engineer*

*Senior Energy Analyst*

* *

*D* 206-788-4571

*www.rushingco.com* <http://www.rushingco.com/>

On Mon, Jul 16, 2012 at 12:22 PM, Nikola Kravik <NKravik at willdan.com> wrote:

> Hi,****
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> I’m trying to model WSHP’s served by Closed circuit Fluid Cooler and
> Boiler.****
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> I get the below error if I use WSHP; I****
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> I read the users archive from Bill Bishop, Umesh and others  about WSHP
> approximations to PVVT or PSZ but when trying to run simulation it still
> kicks me out saying “zero design on the hhw loop” anything I’m missing?***
> *
>
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> Thanks,****
>
> Nikola****
>
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>
> ****
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> Nikola Kravik, LEED AP [image: Description:
> cid:image001.gif at 01CB9AE0.30118F00]
> Project Engineer****
>
>
> *Willdan Energy Solutions*
>
> 6130 Stoneridge Mall Road, Suite 380
> Pleasanton, CA 94588****
>
> T. 925.416.4200 ext. 1228
> D. 925.416.4228 ****
>
> C. 925.719.5883
> F. 925.737.0174****
>
> nkravik at willdan.com
> www.willdan.com/energy****
>
> ** **
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