Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(30) station Wyndham 45 years (1967-2011)| | BoM 1006 (WMO 95214) -15.51° latitude 128.15° longitude 4.3 m alt| | | |It is now 04-Jul-2013 01:53:07 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/30/WY_30_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/30/WY_30_DB.txt (Dry Design Day)| | B: CZ0104_NatHERS_1967-2011_w.txt => NEW33/30/WY_30_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/30/WY_30_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 41.8 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.44) => this Design DB was exceeded 10.2 days/year (incl std dev 4.6 days/year). 41.9 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.0 days/year (incl std dev 4.3 days/year). Design drybulb changes 1.5 °C per century (linear regression R² 0.24) ~> 42.9 °C mid century. 27.6 ° Design WB = mean of 10th highest 3PM each year + (std dev * 3.24) => this Design WB was exceeded 10.0 days/year (incl std dev 5.4 days/year). 27.6 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.0 days/year (incl std dev 5.4 days/year). Design wetbulb changes 1.5 °C per century (linear regression R²=0.40) ~> 28.5 °C mid century. 16.4 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.86) => this Heating DB was insufficient 9.8 days/year (incl std dev 4.5 days/year). 12.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 11.7 days/year (incl std dev 7.1 days/year). Design heating changes -7.5 °C per century (linear regression R²=-0.48) ~> 7.5 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:53 followed by maximum temperature at 14:40. Nighttime cooling rate 0.520 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:47 ~ Max at 15:00 Nighttime cooling rate 0.454 °/hr from 19:19 to 07:1 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:36 ~ Max at 18:00 Nighttime cooling rate 0.365 °/hr from 19:22 to 06:54 (evenings following 3PM design conditions). ___________________________________________________________________________ ___________________________________________________________________________ |Option 1 Dry summer | Option 2 Wet summer |Winter(8AM)| Daily | Yearly | |design DB / coinc WB | coinc DB / design WB | heating | Range | Range | | 41.8 DDB / 22.1 CWB | 32.2 CDB / 27.6 DWB | 16.4 DB |10.2 DB| 25.4 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.13 % | 44.91 % | 27.48 % | 0.19 % | 1.97 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 44.98 % | 27.57 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.32 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=378) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7321| 41.9| 29.2| 12.7| 15:00| 04:47| |+/- 697|+/- 0.6|+/- 2.3|+/- 2.2|+/-00:54|+/-02:57| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=222) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6556| 27.6| 24.0| 3.7| 18:00| -3:36| |+/- 867|+/- 0.8|+/- 2.1|+/- 2.3|+/-05:06|+/-07:54| +/- standard deviation |________|________|_______|_________|________|________| AIRAH critical design excludes 0.25 % extremes (24 hours and 8AM-6PM) _________________________________________________ _________________________ | Critical Cooling || Critical Heating | | 24 hour | 8AM-6PM || 24 hour | 8AM-6PM | | DB / WB | DB / WB || DB | DB | | 41.3 / 27.5 | 42.0 / 27.5 || 12.3 | 19.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.9 DDB / 22.2 CWB | 31.9 CDB / 27.3 DWB | 13.1 DB | 0.4 % | 39.8 DDB / 22.5 CWB | 31.5 CDB / 26.8 DWB | 14.9 DB | 1.0 % | 39.0 DDB / 22.6 CWB | 31.3 CDB / 26.5 DWB | 16.4 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 7 | 29 | 1943 | 1166 | mean annual degrees days |+/- 9 |+/- 24 |+/- 172 |+/- 141 | +/- standard deviation |____________|____________|____________|____________| Cooling degree hour base temps 21 °C, 24 °C & 27 °C. _____________________________________________________ | Cooling | Cooling | Non-Evaporative Cooling | |DegHr base24|DegHr base27|WB DH base21|WB DH base24| | 46636 | 27976 | 13181 | 2751 | mean annual degrees hours |+/- 4119 |+/- 3379 |+/- 1994 |+/- 927 | +/- standard deviation |____________|____________|____________|____________| Average cooling and heating degree hours (D-Hr) tabulated by month _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 30.8| 30.2| 30.1| 29.5| 26.6| 23.8| 23.6| 25.5| 29.2| 31.5| 32.4| 31.7| Average Temperature (DB) | 1.3| 1.3| 1.4| 1.0| 1.4| 1.4| 1.3| 1.0| 1.0| 0.8| 0.9| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 16| 54| 74| 17| 1| 0| 1| 0| HD-Hr base 15 °C | 0| 0| 0| 1| 36| 98| 114| 26| 4| 1| 8| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 1| 2| 4| 64| 224| 283| 114| 7| 1| 4| 2| HD-Hr base 18 °C | 4| 2| 5| 11| 105| 231| 260| 117| 22| 5| 23| 4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5000| 4148| 4517| 4037| 2674| 1522| 1580| 2318| 3889| 5435| 5891| 5625| CD-Hr base 24 °C | 912| 852| 957| 613| 575| 412| 343| 332| 564| 534| 553| 815| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3060| 2415| 2626| 2354| 1438| 714| 747| 1271| 2353| 3469| 3906| 3623| CD-Hr base 27 °C | 821| 758| 819| 472| 386| 266| 219| 236| 394| 446| 500| 765| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2585| 2426| 2101| 765| 156| 27| 15| 23| 188| 889| 1701| 2307| NECD-Hr base 21 °C | 479| 408| 489| 482| 196| 44| 40| 28| 150| 387| 386| 414| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 682| 664| 466| 97| 7| 1| 1| 0| 1| 64| 255| 513| NECD-Hr base 24 °C | 310| 285| 209| 128| 18| 4| 2| 0| 2| 91| 148| 230| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.6| 24.7| 23.7| 20.6| 17.0| 14.3| 13.6| 15.1| 18.7| 21.4| 23.3| 24.1| Average Wet Bulb Temp (WB) | 0.7| 0.7| 0.9| 1.6| 1.8| 1.5| 1.5| 1.5| 1.4| 1.1| 0.7| 0.7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.37% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.6| 39.5| 39.0| 38.3| 36.7| 34.7| 34.9| 36.9| 39.4| 41.6| 42.3| 41.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.0| 40.2| 39.3| 38.3| 36.9| 34.9| 35.1| 36.7| 39.2| 41.2| 41.9| 41.6| Design maximum DB | 32.2| 31.2| 30.2| 28.2| 25.8| 23.1| 22.5| 23.8| 27.4| 30.0| 31.7| 32.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.1| 21.2| 20.9| 19.3| 15.1| 12.6| 11.8| 13.9| 18.6| 21.1| 22.0| 21.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 1.00% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.6| 27.5| 27.3| 25.9| 23.3| 21.7| 21.3| 22.2| 24.2| 26.4| 27.2| 27.6| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.6| 27.6| 27.4| 27.4| 24.7| 23.4| 23.5| 23.1| 24.2| 26.4| 27.2| 27.7| Design maximum WB | 27.1| 27.0| 26.6| 25.7| 23.9| 20.8| 20.1| 20.6| 23.4| 25.6| 26.5| 26.9| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.6| 19.3| 17.9| 14.2| 9.4| 6.8| 6.0| 7.2| 10.6| 14.3| 17.0| 18.6| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|