[Bldg-sim] Which month is the peak month for loads

[Joe Huang]

When you say "peak month in terms of load", do you mean the month with the highest peak 
hourly load or the month with the largest total load ?

I need to add some caveats to Javed's response:
1) he's assuming that you're using EnergyPlus  or an EnergyPlus-based simulation program.  
If so, then the comment about looking at the DDY file makes sense.
2) the DDY file is weakly linked to the simulation weather file (EPW), and based not on 
the weather file but the design conditions table in the ASHRAE Handbook of Fundamentals 
for the same WMO station. These design conditions are calculated as near-extreme 
conditions (0.4%, 1% for cooling, 99.6%, 99% for heating. etc.) from long-term weather 
data and have little relationship with what's in the simulation weather file. In addition, 
the DDY file contains only Annual design conditions, and the only information on monthly 
conditions are very general information on what are the coldest and hottest months, based 
strictly on
the average monthly temperatures.

If you clarify what you're trying to determine, then I can tell you more on what you could do.

Joe

Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
http://weather.whiteboxtechnologies.com for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"

On 6/22/2015 12:40 AM, Javed Iqbal wrote:
> You should check .ddy file that comes with .epw weather files. It has all the data that 
> you are looking for. Hope this helps!
>
> On Mon, Jun 22, 2015 at 11:23 AM, Rasheed Ahmad <rasheed.jmi at gmail.com 
> <mailto:rasheed.jmi at gmail.com>> wrote:
>
>     Dear all,
>
>     I have a query , since  i m doing simulations , i want to know which month is the
>     peak month in terms of load for hot and cold climate regions.
>
>     The weather data which we uses , what extract does the simulation tool takes from
>     that weather data , except the relative humidity , Latitude and all.
>
>
>     It would be very helpful to me if all experts can reply and make me understand all
>     these points.
>
>     Thanks in advance.
>
>
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> -- 
> /
> /
> Javed Iqbal, LEED AP, CEA
> Sr. Energy Analyst
>
>
>
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