[Bldg-sim] How can we generate a new typical year

[Larry Degelman]

Hello Mohamad,

I'm assuming that item 1 in your inquiry refers to generation of files equal 
to the well-known typical meteorological years (TMYs.)  A TMY cannot be 
generated from a single year of hourly data -- TMYs are created by selecting 
"typical months" of weather data from recorded hourly data from anywhere 
from 15 to 30 years of records.  The methodology is described in references 
shown in the TMY users manual, NCDC (1981). Typical Meteorological Year 
User's Manual. Asheville, NC: National Climatic Data Center.  (See 
http://rredc.nrel.gov/solar/pubs/tmy2/)

Some analyses that relate to the validity of the TMY data can be found in 
several reports dating from back in the late 1970's:
Hall, I.; Prairie, R.; Anderson, H.; Boes, E. (1978). Generation of Typical 
Meteorological Years for 26 SOLMET Stations. SAND78-1601. Albuquerque, NM: 
Sandia National Laboratories.
Menicucci, D.; Fernandez, J. (1988). A Comparison of Typical Year Solar 
Radiation Information with the SOLMET Data Base. SAND87-2379. Albuquerque, 
NM: Sandia National Laboratories.
Crawley, D.B. 1998. Which weather data should you use for energy simulations 
of commercial buildings? ASHRAE Transactions 104(2):498-515.
Huang, J. 1998. The impact of different weather data on simulated 
residential heating and cooling loads. ASHRAE Transactions 104(2):516-527.

More recently (2008-2009), ASHRAE has contracted for generation of 2500 to 
3000 additional cities (mostly in China) in a research project under the 
direction of TC-4.2 (Climatic Information).  Dr. Joe Huang (joe at drawbdl.com) 
is the prime contractor on that project.

In regard to item 2, there is some discussion related to climate change 
considerations on page 14.13 in the new Climatic Design Information Chapter 
(Chap 14) of the 2009 ASHRAE Handbook of Fundamentals.  The chapter 
addresses mostly design conditions and not generation of typical year 
weather data.

Regards,

LOD
===========================
Larry O. Degelman, P.E. , HBDP
Professor Emeritus of Architecture
Texas A&M University
===========================

--------------------------------------------------
From: "M F A Ramadan" <M.Fahmy at sheffield.ac.uk>
Sent: Wednesday, July 08, 2009 7:13 AM
To: <bldg-sim at lists.onebuilding.org>
Subject: [Bldg-sim] How can we generate a new typical year

>
>
> Dear All:
>
> I need to know simply two issues;
>
> 1- How can we generate a new typical year from hourly annual measurements?
>
> 2- What are the methods/tools used to generate a climate change data for 
> 2050
> for example??
>
> Any guide would be appreciated.
>
>
> Salam,
> Mohamad
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