[Equest-users] HVAC simulation

R B slv3sat at gmail.com
Tue Jun 29 05:55:39 PDT 2010


Depends on what kind of system you are using. looks like there is some
kind of reheat going on in the night hours during summer.
-rohini

On 6/29/10, Siddharth V <siddharth.v at tcs.com> wrote:
> Hi,
>
> I am currently using eQUEST to simulate the performance of a building (an
> ideal case), where in the HVAC operates at the below temperatures 24x7 for
> the whole year.
>
> Below are the preset values:
>
> Heat when temp <= 74F
>
> Cool when temp >= 76F
>
> Ideal temp of the building is 75F
>
> Also cool, when the outside temp >=72F
>
>
> Error in Simulation:
>
> I always see that the total heating power consumed in Jan/Dec month
> (Winter) is lesser than that July and August Month (Summers).
>
> But the simulation's outside Dry Bulb Temperature (avg, min and max
> Temperature) is higher during July/August when compared to Jan/Dec month.
>
>
> If I operate the HVAC for 12x7 (7am to 7pm) for all the days, then it
> follows the seasonal pattern (heating power is higher in Jan/Dec than
> Jul/Aug).
>
> But I need to get the power O/P when it operates for 24x7 only!
>
> Please let me know as to why this error introduced, and how to rectify it!
> Or must I add some more details in the detailed edit.
>
>
>
> Regards,
> Siddharth Venkatraraman
> Tata Consultancy Services
> Mailto: siddharth.v at tcs.com
> Website: http://www.tcs.com
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