[Bldg-sim] Non for profit wheather data centres? Re: wind speed in TMY

[Martin Roy ing. LEED AP]

Hi,

A possible source is <http://www.wunderground.com/>http://www.wunderground.com

It looks like private and public weather station 
located around the world and some has wind data.


Martin


At 06:24 12/06/2011, Radler63 wrote:
>Hello,
>
>data availibility either for simulation or predictive control is vital.
>I was ventilating the idea of non for profit 
>local data centres, collecting an providing data 
>for facility management but also for planning 
>building integrated solar  and wind harvesting.
>Having all those web-enabled devices this should not be very costly.
>
>Any progress anyhwere that this idea will 
>materialise? While public administrations 
>sleeping, finally the google boys may take over 
>and we will risk a 100% dependency on them. I 
>just learned that even sketchup is now part of building modeling.
>
>best regards
>
>Gerfried
>
>
>From: <mailto:jhaberl at tamu.edu>Jeff Haberl
>Sent: Sunday, June 12, 2011 3:20 AM
>To: <mailto:paul at zed-uk.com>Paul Carey ; 
><mailto:l.f.r.peeters at gmail.com>leen peeters ; 
><mailto:bldg-sim at lists.onebuilding.org>bldg-sim at lists.onebuilding.org
>Subject: Re: [Bldg-sim] wind speed in TMY
>
>
>Hello,
>
>
>
>Unfortunately, historical wind speeds on TMY 
>files that come from NOAA data are from peak 5 
>minute gusts, which can have little correlation 
>to average hourly wind speeds. At some stations 
>integrating sensors have been added, but it will 
>take time to push these data through the average year data base.
>
>
>
>In addition, previous work in England using 
>ultrasonic sensors has shown that NOAA data also 
>suffers from severe drop out at speeds less than 
>5 to 10 MPH, which means that most sites show 
>"0" wind speed, whereas there is actually some 
>wind, but not enough to move the cups on the 
>anemometer. This can be a problem for simulation of natural ventilation.
>
>
>
>ASHRAE's TC 4.2 continues to discussed these and 
>other issues, which can be viewed on ASHRAE web page in their meeting minutes.
>
>
>
>Jeff
>
>
>8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')  8=)8=?
>
>Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu
>
>Professor............................................................Office 
>Ph: 979-845-6507
>
>Department of Architecture.............................Lab Ph:979-845-6065
>
>Energy Systems Laboratory.............................FAX: 979-862-2457
>
>Texas A&M University.....................................77843-3581
>
>College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu
>
>8=/  8=)  :=)  8=)  ;=)  8=)  8=()  8=)  :=)  8=)  8=!  8=)  8=? 8=)8=0
>
>----------
>From: bldg-sim-bounces at lists.onebuilding.org 
>[bldg-sim-bounces at lists.onebuilding.org] on 
>behalf of Paul Carey [paul at zed-uk.com]
>Sent: Saturday, June 11, 2011 4:16 PM
>To: leen peeters; bldg-sim at lists.onebuilding.org
>Subject: Re: [Bldg-sim] wind speed in TMY
>
>Dear Leen
>
>Most weather data quotes the reference wind 
>speed which is that at 10m above the ground as 
>measured at certain weather stations. Adjustment 
>factors are then made for levels of surface 
>roughness, I.e. urban, rural environments. I 
>think the TMY follows the same convention.
>
>Paul
>
>
>Sent from my HTC
>
>Dr Paul Carey
>Director
>
>Zero Energy Design Ltd
>10a Portland Place
>2-22 Mottram Road
>Stalybridge
>Cheshire
>UK
>SK15 3AD
>
>Tel - +44 161 3386200
>Mob - +44 789 4098012
>Email - paul at zed-uk.com
>
>
>
>----- Reply message -----
>From: "leen peeters" <l.f.r.peeters at gmail.com>
>Date: Sat, Jun 11, 2011 20:34
>Subject: [Bldg-sim] wind speed in TMY
>To: <bldg-sim at lists.onebuilding.org>
>
>Hi,
>
>can anyone tell me what wind speed is exactly meant in the TMY. Is it the
>free, undisturbed wind speed, the wind speed above the roof, the wind speed
>at 10 metres above the ground ....
>
>Thanks,
>
>Leen
>
>
>
>----------
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----------

Martin Roy, ing. PA LEED®, président
Martin Roy et associés
1805 chemin Oka,
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Tel: 450-623-0340
Cell. 514-594-6352

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