Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(37) station Halls Creek 45 years (1967-2011)| | BoM 2012 (WMO 94212) -18.23° latitude 127.66° longitude 423.9 m alt| | | |It is now 04-Jul-2013 02:38:34 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/37/HA_37_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/37/HA_37_DB.txt (Dry Design Day)| | B: CZ0301_NatHERS_1967-2011_w.txt => NEW33/37/HA_37_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/37/HA_37_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 41.1 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.21) => this Design DB was exceeded 10.0 days/year (incl std dev 5.0 days/year). 41.1 ° 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 4.5 days/year). Design drybulb changes -0.1 °C per century (linear regression R² -0.02) ~> 41.0 °C mid century. 24.7 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.75) => this Design WB was exceeded 11.3 days/year (incl std dev 5.0 days/year). 24.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.4 days/year (incl std dev 4.3 days/year). Design wetbulb changes 1.7 °C per century (linear regression R²=0.55) ~> 25.8 °C mid century. 11.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.90) => this Heating DB was insufficient 10.2 days/year (incl std dev 4.8 days/year). 9.2 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.1 days/year (incl std dev 4.4 days/year). Design heating changes 1.2 °C per century (linear regression R²=0.13) ~> 9.9 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:31 followed by maximum temperature at 14:58. Nighttime cooling rate 0.641 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:33 ~ Max at 15:00 Nighttime cooling rate 0.785 °/hr from 19:18 to 06:43 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:32 ~ Max at 16:54 Nighttime cooling rate 0.342 °/hr from 19:19 to 06:50 (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 | | 41.1 DDB / 19.0 CWB | 28.2 CDB / 24.7 DWB | 11.9 DB |11.4 DB| 29.2 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.13 % | 32.56 % | 39.32 % | 0.15 % | 1.18 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 32.62 % | 39.39 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.28 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=394) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7789| 41.0| 27.3| 13.7| 15:00| 05:33| |+/- 637|+/- 0.5|+/- 2.0|+/- 2.0|+/-00:48|+/-01:19| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=276) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5503| 24.7| 21.4| 3.3| 16:54| -2:32| |+/- 1374|+/- 0.5|+/- 1.5|+/- 1.6|+/-04:12|+/-07:06| +/- 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 | | 40.6 / 24.6 | 41.3 / 24.6 || 9.8 | 13.8 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.1 DDB / 19.0 CWB | 28.1 CDB / 24.4 DWB | 10.3 DB | 0.4 % | 39.2 DDB / 19.0 CWB | 27.9 CDB / 24.0 DWB | 11.7 DB | 1.0 % | 38.2 DDB / 18.9 CWB | 27.9 CDB / 23.6 DWB | 12.9 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 35 | 111 | 1407 | 807 | mean annual degrees days |+/- 17 |+/- 38 |+/- 190 |+/- 139 | +/- 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| | 33764 | 19357 | 2300 | 39 | mean annual degrees hours |+/- 4554 |+/- 3338 |+/- 774 |+/- 55 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 29.7| 28.7| 28.3| 26.7| 23.0| 19.9| 19.8| 22.5| 26.7| 29.9| 31.1| 30.5| Average Temperature (DB) | 1.5| 1.7| 1.5| 1.4| 1.4| 1.6| 1.3| 1.2| 1.3| 1.3| 1.1| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 1| 64| 291| 345| 121| 9| 1| 0| 0| HD-Hr base 15 °C | 0| 0| 0| 4| 68| 213| 194| 82| 17| 3| 2| 2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 2| 2| 24| 279| 863| 971| 456| 67| 6| 4| 1| HD-Hr base 18 °C | 5| 5| 5| 39| 197| 428| 367| 218| 71| 14| 14| 4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4222| 3231| 3381| 2559| 1201| 487| 510| 1189| 2694| 4461| 5024| 4805| CD-Hr base 24 °C | 1016| 1022| 976| 692| 434| 277| 222| 357| 603| 829| 709| 833| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2539| 1828| 1898| 1344| 483| 140| 138| 490| 1483| 2779| 3234| 3002| CD-Hr base 27 °C | 817| 786| 737| 487| 253| 115| 96| 214| 430| 651| 584| 707| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 679| 733| 382| 42| 7| 0| 0| 2| 5| 18| 76| 357| NECD-Hr base 21 °C | 329| 332| 276| 66| 20| 1| 0| 11| 15| 41| 94| 229| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10| 11| 4| 0| 0| 0| 0| 1| 1| 1| 6| 4| NECD-Hr base 24 °C | 17| 10| 5| 0| 1| 0| 0| 5| 6| 5| 32| 8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.2| 21.5| 19.7| 16.0| 13.3| 10.9| 10.2| 11.3| 13.7| NaN| 18.4| 20.2| Average Wet Bulb Temp (WB) | 1.0| 1.1| 1.3| 1.4| 1.6| 1.4| 1.3| 1.2| 1.2| NaN| 1.1| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.16% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.4| 39.0| 37.7| 36.3| 33.6| 31.2| 31.3| 34.3| 37.3| 39.9| 41.2| 41.2| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.8| 39.8| 38.6| 37.0| 34.1| 31.5| 31.4| 34.3| 37.2| 40.0| 40.9| 41.2| Design maximum DB | 29.2| 27.8| 26.8| 25.5| 22.8| 20.0| 19.2| 21.6| 25.5| 28.2| 29.6| 29.8| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.6| 19.9| 18.9| 16.1| 11.6| 8.9| 8.3| 10.4| 14.6| 18.2| 19.6| 19.6| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 1.18% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.8| 25.0| 24.5| 22.1| 19.8| 18.1| 17.1| 18.6| 20.7| 22.2| 23.5| 24.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.8| 24.8| 24.5| 23.0| 21.4| 19.3| 18.7| 18.9| 20.7| 22.1| 23.1| 24.3| Design maximum WB | 23.8| 24.0| 23.6| 22.0| 20.2| 17.5| 16.7| 16.3| 19.4| 21.4| 22.5| 23.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.9| 15.4| 13.2| 9.3| 6.0| 3.8| 3.0| 4.0| 6.2| 9.1| 11.5| 13.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|