Re: [EnergyPlus_Support] GBR_Ebbw.Vale.Wales_MN6 weather file does not contain SizingPeriod:DesignDay

On Sat, Oct 15, 2011 at 7:48 AM, Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

Regarding 200 degree. Think of the compass as a circle. North is 0 degrees, South is 180 degrees. 200 degrees is aa little West of due South.

The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Mota Fernando
Sent: Saturday, October 15, 2011 7:15 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx

Subject: Re: [EnergyPlus_Support] GBR_Ebbw.Vale.Wales_MN6 weather file does not contain SizingPeriod:DesignDay

Dear Dr Li,

I have a query about wind direction where does the 200 degree figure come from?

Thanks

From: Dru Crawley <dbcrawley@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Saturday, October 15, 2011 10:43 AM
Subject: Re: [EnergyPlus_Support] GBR_Ebbw.Vale.Wales_MN6 weather file does not contain SizingPeriod:DesignDay

For locations such as Ebbw Vale where there are not design conditions in the ASHRAE Handbook, the design condtions noted in the .STAT for THIS FILE ONLY -- not the longer period of record in the ASHRAE Handbook. (That's why there are no data listed in the .DDY.)

You should compare these with the data for nearby locations in the ASHRAE Handbook. They could vary significantly.

On Fri, Oct 14, 2011 at 1:23 PM, YuanLu Li <yli006@xxxxxxxxxxx> wrote:

From the MN6 weather file the .ddy has the following:-

Site:Location,
Ebbw Vale_Wales_GBR Design_Conditions, !- Location Name
51.78, !- Latitude {N+ S-}
-3.21, !- Longitude {W- E+}
0.00, !- Time Zone Relative to GMT {GMT+/-}
298.00; !- Elevation {m}
------------------------------------
The following is from the .stat file:-

Statistics for GBR_Ebbw.Vale.Wales_MN6
Location -- Ebbw Vale Wales GBR
{N 51° 46'} {W   3° 12'} {GMT +0.0 Hours}
Elevation --   298m above sea level
Standard Pressure at Elevation -- 97796Pa
Data Source -- MN6

-------------------
Design Stat Coldest Month HDB 99.6% HDB 99%
Units {} {C} {C}
Heating 1 -5.5 -4.8

Design Stat Hottest Month CDB .4% CDB 1% CDB 2% CDP .4% CDP 1% CDP 2%
Units {} {C} {C} {C} {C} {C} {C}
Cooling 8 22.3 21.8 20.9 18.6 17.6 16.6
------------------
From the next table, the corresponding minimum temperature is 5.0°C for August and 5.4°C for July. The maximum for July is 22.1°C.    22.3 and 5.4 combination is warmer.
Therefore use 22.3 and 16.9 is as the max and difference in the DesignDay Data.

Dew points for the two months are: 18.5 and 18.8. (WetBulb)

Barometer reading: 97796.
============================
Site:Location,
    Ebbw Vale_Wales_GBR HDB 99.6% , !- Name
===================
The indented lines have been changed using the above data.
    ---------------

SizingPeriod:DesignDay,
    Ebbw Vale_Wales_GBR Annual Cooling 0.4% Design Conditions , !- Name
    22.3, !- Maximum Dry-Bulb Temperature {C}
    16.9, !- Daily Temperature Range {deltaC}
    18.5, !- Humidity Indicating Conditions at Maximum Dry-Bulb
    97796., !- Barometric Pressure {Pa}
    3.0, !- Wind Speed {m/s}
    200, !- Wind Direction {deg}
1.0, !- Sky Clearness
0, !- Rain Indicator
0, !- Snow Indicator
21, !- Day of Month
7, !- Month
    SummerDesignDay, !- Day Type
0, !- Daylight Saving Time Indicator
    WetBulb; !- Humidity Indicating Type
========================

You can copy any other DesignDay object for Winter and modify using the heating data from the .stat file.      -5.5, 0, -5.5   and 0.0 for the sky clearness (no sun)
Hope this will help.

TMY data exclude the extreme cases. You can use the sizing multiplying factor to increase or decrease the autosized equipment. Dr. Li

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: motabmx1@xxxxxxxxx
Date: Fri, 14 Oct 2011 07:27:03 -0700

Subject: Re: [EnergyPlus_Support] GBR_Ebbw.Vale.Wales_MN6 weather file does not contain SizingPeriod:DesignDay

Dear Mr. Crawley,

Thanks for your quick replay. I have attached the map that you forwarded to me with same weather files that may be closer enough to the ebbw vale file. I wonder if as you mentioned in your previous e-mail, I could get them from you.

Many thanks

Fernando

From: Dru Crawley <dbcrawley@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Wednesday, October 12, 2011 11:36 PM
Subject: Re: [EnergyPlus_Support] GBR_Ebbw.Vale.Wales_MN6 weather file does not contain SizingPeriod:DesignDay

Unless there was design data available in the ASHRAE Handbook, the Meteonorm files that we created do not have the design day objects. Suggest finding a nearby location with similar climate and elevation and use the data from there.

My knowledge of Wales topography and geography is poor -- if one of the pins on the attached map look close, let me know and I'll send you the data.

On Wed, Oct 12, 2011 at 6:17 PM, motabmx1 <motabmx1@xxxxxxxxx> wrote:

Dear all,

I wonder if you can help me in the foolowing matter.

I download from this page the file GBR_Ebbw.Vale.Wales_MN6 which I am using in a project I am working at the moment. The problem is that this weather file does not contain any object in the section SizingPeriod:DesignDay which I think I need for sizing my HVAC, Does anyone have a file for this location with the design day objects?

thanks

fernando