[Bldg-sim] Cooling Tower gpm/HP to EIR

[Javed Iqbal]

Hi,

There was an old post back in 2012 on this topic. Here i am pasting the
excerpt from the post:

'*An axial fan cooling tower is required per G3.1.3.11. Required cooling
tower efficiency is 38.2 gpm/hp per ASHRAE 90.1, Table 6.8.1G. Let eQUEST
autosize the cooling tower, and use the design flowrate shown on the PV-A
report to determine the fan HP. Then convert to kW and enter the value in
FAN-KW/CELL. The cell is normally grayed out, so right-click the cell and
enter the kW value by changing the user default*.'

Moreover, I do follow the same in E+ too.

Hope this helps!



On Wed, Mar 21, 2018 at 7:26 PM, Jones, Christopher via Bldg-sim <
bldg-sim at lists.onebuilding.org> wrote:

> My mind is dead this morning. I can’t recall how to convert the 90.1
> cooling tower fan power requirement to TWR-EIR for DOE2.2. For example,
> given 40.2 gpm/HP and convert Btu/Btu. Seems like you have to assume a
> delta-T for the condenser water flow in order to convert the gpm flow to
> Btu?
>
>
>
>
>
> *Christopher R. Jones*, P.Eng.
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-- 

Javed Iqbal, LEED AP, CEA
Sr. Energy Analyst
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