Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(10) station Brisbane 45 years (1967-2011)| | BoM 40842 (WMO 94578) -27.39° latitude 153.13° longitude 9.5 m alt| | | |It is now 03-Jul-2013 23:40:03 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/10/BR_10_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/10/BR_10_DB.txt (Dry Design Day)| | B: CZ0205_NatHERS_1967-2011_w.txt => NEW33/10/BR_10_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/10/BR_10_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 31.6 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.55) => this Design DB was exceeded 9.7 days/year (incl std dev 3.4 days/year). 31.7 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.2 days/year (incl std dev 3.3 days/year). Design drybulb changes -1.6 °C per century (linear regression R² -0.28) ~> 30.8 °C mid century. 24.9 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.96) => this Design WB was exceeded 10.5 days/year (incl std dev 4.8 days/year). 24.9 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.5 days/year (incl std dev 4.8 days/year). Design wetbulb changes 0.7 °C per century (linear regression R²=0.16) ~> 25.3 °C mid century. 6.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.86) => this Heating DB was insufficient 10.0 days/year (incl std dev 5.0 days/year). 5.2 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.8 days/year (incl std dev 4.4 days/year). Design heating changes -3.6 °C per century (linear regression R²=-0.41) ~> 3.0 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:17 followed by maximum temperature at 14:25. Nighttime cooling rate 0.401 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:27 ~ Max at 14:18 Nighttime cooling rate 0.430 °/hr from 19:47 to 07:20 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:22 ~ Max at 16:24 Nighttime cooling rate 0.266 °/hr from 19:39 to 06:44 (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 | | 31.6 DDB / 21.6 CWB | 27.9 CDB / 24.9 DWB | 6.9 DB | 7.6 DB| 24.7 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.25 % | 8.72 % | 4.30 % | 0.29 % | 0.58 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 8.86 % | 4.39 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.51 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=313) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7308| 31.8| 21.5| 10.3| 14:18| 05:27| |+/- 981|+/- 0.7|+/- 2.8|+/- 2.9|+/-01:00|+/-02:20| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=351) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6496| 25.0| 21.1| 3.8| 16:24| -3:22| |+/- 1702|+/- 0.6|+/- 1.6|+/- 1.6|+/-03:54|+/-08:58| +/- 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 | | 31.6 / 25.1 | 32.8 / 25.4 || 5.6 | 10.0 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 31.0 DDB / 21.9 CWB | 27.8 CDB / 24.7 DWB | 6.2 DB | 0.4 % | 29.9 DDB / 21.8 CWB | 27.3 CDB / 24.1 DWB | 7.7 DB | 1.0 % | 29.0 DDB / 21.4 CWB | 26.8 CDB / 23.5 DWB | 8.9 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 175 | 421 | 200 | 41 | mean annual degrees days |+/- 39 |+/- 58 |+/- 35 |+/- 13 | +/- 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| | 4798 | 977 | 1460 | 66 | mean annual degrees hours |+/- 852 |+/- 320 |+/- 524 |+/- 69 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.9| 24.6| 23.4| 21.0| 18.0| 15.4| 14.5| 15.5| 18.0| 20.4| 22.3| 24.0| Average Temperature (DB) | 0.7| 0.8| 0.7| 0.6| 0.7| 0.8| 0.9| 0.7| 0.8| 0.8| 0.8| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 1| 30| 318| 944| 1370| 1057| 406| 76| 7| 0| HD-Hr base 15 °C | 0| 0| 4| 40| 202| 299| 439| 287| 172| 54| 11| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 2| 18| 220| 1036| 2160| 2754| 2267| 1143| 392| 87| 17| HD-Hr base 18 °C | 2| 5| 28| 129| 365| 423| 548| 393| 306| 162| 64| 20| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1204| 982| 698| 247| 31| 2| 2| 10| 74| 203| 454| 890| CD-Hr base 24 °C | 302| 304| 209| 126| 27| 4| 3| 21| 66| 131| 216| 320| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 285| 215| 116| 26| 1| 0| 0| 1| 12| 35| 86| 200| CD-Hr base 27 °C | 143| 128| 67| 36| 3| 0| 0| 6| 19| 41| 86| 135| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 480| 400| 178| 25| 1| 0| 0| 0| 0| 12| 75| 287| NECD-Hr base 21 °C | 258| 268| 147| 34| 4| 0| 0| 0| 1| 20| 64| 212| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28| 22| 5| 0| 0| 0| 0| 0| 0| 0| 0| 10| NECD-Hr base 24 °C | 34| 47| 10| 1| 0| 0| 0| 0| 0| 0| 2| 14| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.6| 20.6| 19.4| 17.1| 14.4| 11.7| 10.6| 11.2| 13.5| 15.9| 17.8| 19.6| Average Wet Bulb Temp (WB) | 0.8| 0.8| 0.8| 0.9| 1.1| 1.1| 1.3| 1.1| 1.1| 0.9| 0.8| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.23% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.5| 31.6| 31.0| 29.2| 26.6| 24.3| 24.2| 25.6| 28.7| 30.5| 31.9| 32.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 31.6| 31.2| 30.3| 28.8| 25.9| 23.7| 23.5| 24.5| 27.6| 29.0| 30.4| 31.7| Design maximum DB | 25.0| 24.8| 23.5| 21.1| 18.9| 16.5| 15.9| 16.2| 18.4| 20.7| 22.8| 24.1| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.2| 18.3| 16.4| 12.5| 8.5| 5.2| 4.5| 5.2| 7.5| 11.1| 14.1| 16.3| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.94% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.3| 24.9| 24.2| 22.3| 20.3| 18.1| 17.4| 18.0| 19.9| 21.7| 23.5| 24.8| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.0| 24.6| 23.7| 21.7| 19.8| 17.7| 16.9| 17.6| 19.6| 21.5| 23.0| 24.3| Design maximum WB | 23.4| 23.3| 21.9| 20.0| 18.1| 15.6| 14.8| 14.8| 16.7| 18.9| 20.8| 22.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.0| 15.7| 13.9| 9.7| 6.2| 3.5| 2.8| 2.9| 4.8| 7.8| 10.5| 13.1| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|