Re: [EnergyPlus_Support] weather data format

[Linda Lawrie <linda@xxxxxxxxxx>]

At 03:26 AM 5/26/2005, Adriana Angelotti wrote:
>     * all data refer to the 60th minute of a certain hour. For example hour
>4 minute 60. Does it mean hour 5 minute 0?

No, it means the time interval from 3:01 to 4:00.

>     * are all data instantaneous values or mean values? In the last case,
>the average is over the previous hour, the next hour or centered on the hour?

This usually depends on the field.  For example, solar radiation is usually 
interpreted as:
Amount of solar radiation in Wh/m2 received from the sky (excluding the 
solar disk) on a horizontal surface during the 60 minutes preceding the 
hour indicated

But Dry bulb temperature:
Dry bulb temperature in tenths of degrees C at the hour indicated.

(Above examples taken directly from the TMY 2 manual).

You can read about EnergyPlus hourly interpolation at page number 1075 in 
the IOReference document.


Linda

EnergyPlus WebSite: http://www.energyplus.gov
Owner: EnergyPlus_Support list
Member: EnergyPlus Development Team



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