Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(50) station Oakey 45 years (1967-2011)| | BoM 41359 (WMO 94552) -27.40° latitude 151.74° longitude 406.7 m alt| | | |It is now 04-Jul-2013 03:59:35 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/50/OA_50_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/50/OA_50_DB.txt (Dry Design Day)| | B: CZ0501_NatHERS_1967-2011_w.txt => NEW33/50/OA_50_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/50/OA_50_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.30) => this Design DB was exceeded 9.9 days/year (incl std dev 5.1 days/year). 35.4 ° 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 4.6 days/year). Design drybulb changes 1.8 °C per century (linear regression R² 0.19) ~> 36.5 °C mid century. 24.0 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.90) => this Design WB was exceeded 14.6 days/year (incl std dev 9.7 days/year). 23.3 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 32.0 days/year (incl std dev 21.2 days/year). Design wetbulb changes -3.1 °C per century (linear regression R²=-0.38) ~> 21.4 °C mid century. -1.4 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.81) => this Heating DB was insufficient 10.2 days/year (incl std dev 6.2 days/year). -3.9 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 4.9 days/year (incl std dev 2.7 days/year). Design heating changes -18.8 °C per century (linear regression R²=-0.63) ~> -15.3 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:19 followed by maximum temperature at 15:12. Nighttime cooling rate 0.686 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:13 ~ Max at 15:18 Nighttime cooling rate 0.765 °/hr from 19:55 to 06:33 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 04:49 ~ Max at 13:42 Nighttime cooling rate 0.627 °/hr from 19:48 to 06:31 (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 | | 35.3 DDB / 20.7 CWB | 30.2 CDB / 24.0 DWB | -1.4 DB |11.9 DB| 36.7 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.19 % | 8.06 % | 4.82 % | 0.20 % | 0.43 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 8.22 % | 4.84 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.39 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=393) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7162| 35.2| 21.7| 13.5| 15:18| 05:13| |+/- 1477|+/- 0.6|+/- 3.3|+/- 3.5|+/-00:42|+/-00:50| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=467) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6467| 24.0| 22.1| 1.8| 13:42| 04:49| |+/- 1545|+/- 0.3|+/- 1.5|+/- 1.5|+/-01:12|+/-02:15| +/- 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 | | 34.9 / 24.0 | 36.1 / 24.1 || -2.3 | 3.3 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 34.7 DDB / 21.4 CWB | 30.1 CDB / 23.8 DWB | -1.5 DB | 0.4 % | 33.7 DDB / 21.6 CWB | 29.7 CDB / 23.6 DWB | 0.3 DB | 1.0 % | 32.3 DDB / 20.6 CWB | 28.6 CDB / 23.0 DWB | 2.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 578 | 969 | 317 | 130 | mean annual degrees days |+/- 195 |+/- 276 |+/- 190 |+/- 104 | +/- 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| | 7606 | 3131 | 894 | 4 | mean annual degrees hours |+/- 4556 |+/- 2502 |+/- 1758 |+/- 7 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.4| 24.0| 22.4| 19.1| 15.0| 11.8| 10.7| 12.4| 16.1| 19.4| 21.7| 23.5| Average Temperature (DB) | 2.1| 2.2| 2.2| 2.2| 2.0| 2.1| 2.2| 2.2| 2.4| 2.4| 2.1| 2.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12| 16| 85| 481| 1613| 2920| 3628| 2904| 1441| 553| 173| 54| HD-Hr base 15 °C | 28| 24| 90| 328| 745| 972| 1148| 983| 707| 340| 159| 55| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 94| 103| 334| 1122| 2861| 4502| 5323| 4418| 2516| 1227| 532| 231| HD-Hr base 18 °C | 89| 90| 233| 614| 949| 1171| 1327| 1199| 940| 635| 352| 169| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1640| 1280| 1002| 386| 67| 1| 1| 34| 258| 609| 933| 1393| CD-Hr base 24 °C | 913| 793| 749| 394| 115| 3| 3| 61| 277| 525| 569| 781| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 760| 551| 391| 107| 2| 0| 0| 4| 71| 230| 388| 628| CD-Hr base 27 °C | 611| 483| 446| 161| 6| 0| 0| 20| 88| 260| 311| 493| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 284| 308| 143| 2| 0| 0| 0| 0| 0| 1| 15| 141| NECD-Hr base 21 °C | 544| 580| 312| 6| 0| 0| 0| 0| 0| 7| 35| 319| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 3| 0| 0| 0| 0| 0| 0| 0| 1| 0| 0| NECD-Hr base 24 °C | 0| 5| 2| 1| 0| 0| 0| 0| 0| 4| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.8| 18.9| 17.3| 14.5| 11.3| 8.6| 7.4| 8.3| 10.9| 13.6| 15.8| 17.6| Average Wet Bulb Temp (WB) | 2.0| 2.2| 2.3| 2.5| 2.4| 2.6| 2.8| 2.7| 2.8| 2.5| 2.2| 2.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.94% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.6| 34.6| 33.0| 29.9| 26.3| 23.3| 23.5| 25.7| 30.0| 32.4| 34.0| 35.0| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.4| 34.2| 33.5| 30.4| 26.9| 23.9| 23.6| 25.6| 29.8| 32.3| 34.0| 35.0| Design maximum DB | 23.5| 23.7| 22.0| 18.3| 15.6| 13.0| 11.9| 12.4| 15.4| 18.4| 21.2| 22.4| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.7| 14.5| 11.4| 7.0| 2.6| -0.8| -1.8| -1.1| 1.8| 5.9| 9.7| 12.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 15.58% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.0| 23.1| 21.7| 20.0| 17.8| 16.0| 15.2| 15.6| 17.6| 19.8| 20.9| 22.2| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.8| 24.1| 22.9| 21.0| 19.1| 17.7| 16.9| 17.3| 19.0| 20.3| 21.6| 23.0| Design maximum WB | 22.3| 22.7| 21.3| 18.0| 13.4| 10.9| 9.3| 10.6| 14.4| 17.9| 19.8| 21.4| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.6| 13.2| 10.0| 5.7| 1.7| -1.4| -2.5| -2.1| 0.9| 4.5| 8.1| 10.0| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|