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Sent answer via email. Do not see it here:

I think the probable difference is that the weather converter looks at Summer and Winter seasons rather than the entire year.

For North Latitude, the summer season are the months 4-9, the winter season are months 10-3

Linda

FIBPSA, FASHRAE http://climate.onebuilding.org - free repository of climate data for building simulation Climate.onebuilding is a FREE service not supported by any outside organization or government agency.

Sent answer via email. Do not see it here:

I think the probable difference is that the weather converter looks at Summer and Winter seasons rather than the entire year.

For North Latitude, the summer season are the months 4-9, the winter season are months 10-3

UPDATED Answer: (only 1 answer per user allowed -- what a crock). Anyway, I shamelessly copied the code from the DOE2 weather converter for making the "design condition calculations" -- The code puts temperatures, etc into "bins" and then uses the 99%, 1%, etc bins to make the desired temperatures.

That is probably why there is no exact match.

Linda

FIBPSA, FASHRAE http://climate.onebuilding.org - free repository of climate data for building simulation Climate.onebuilding is a FREE service not supported by any outside organization or government agency.