Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(41) station Giles 33 years (1979-2011)| | BoM 13017 (WMO 94461) -25.03° latitude 128.30° longitude 599.0 m alt| | | |It is now 04-Jul-2013 03:03:30 -> computational time was 5 minutes| | OUTPUTS | | INPUTS => NEW33/41/GI_41_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/41/GI_41_DB.txt (Dry Design Day)| | B: CZ0401_NatHERS_1979-2011_w.txt => NEW33/41/GI_41_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/41/GI_41_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 40.9 °C Design DB = mean of 10th highest 3PM each year + (std dev * 2.21) => this Design DB was exceeded 9.9 days/year (incl std dev 4.3 days/year). 41.0 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.5 days/year (incl std dev 3.9 days/year). Design drybulb changes -2.9 °C per century (linear regression R² -0.34) ~> 39.4 °C mid century. 22.9 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.40) => this Design WB was exceeded 10.4 days/year (incl std dev 4.5 days/year). 23.0 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 8.2 days/year (incl std dev 3.7 days/year). Design wetbulb changes 2.6 °C per century (linear regression R²=0.22) ~> 24.4 °C mid century. 3.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.83) => this Heating DB was insufficient 9.8 days/year (incl std dev 4.1 days/year). 3.2 ° 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 4.2 days/year). Design heating changes -1.3 °C per century (linear regression R²=-0.14) ~> 2.5 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:58 followed by maximum temperature at 17:03. Nighttime cooling rate 0.867 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:35 ~ Max at 16:42 Nighttime cooling rate 0.977 °/hr from 19:32 to 06:55 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -4:34 ~ Max at 17:36 Nighttime cooling rate 0.522 °/hr from 19:27 to 06:49 (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 | | 40.9 DDB / 17.8 CWB | 27.5 CDB / 22.9 DWB | 3.9 DB |10.7 DB| 37.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.20 % | 10.76 % | 30.28 % | 0.26 % | 0.28 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 10.85 % | 30.42 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.46 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=176) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 8029| 41.3| 28.1| 13.3| 16:42| 04:35| |+/- 748|+/- 0.7|+/- 2.3|+/- 2.3|+/-01:00|+/-05:54| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=128) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5426| 23.2| 19.5| 3.7| 17:36| -4:34| |+/- 1686|+/- 0.7|+/- 2.1|+/- 2.1|+/-05:00|+/-08:25| +/- 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 | | 40.7 / 23.0 | 41.3 / 23.0 || 3.7 | 4.9 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.2 DDB / 17.7 CWB | 27.5 CDB / 22.7 DWB | 4.3 DB | 0.4 % | 39.1 DDB / 17.5 CWB | 27.7 CDB / 22.0 DWB | 5.7 DB | 1.0 % | 38.0 DDB / 17.4 CWB | 28.2 CDB / 21.1 DWB | 7.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 262 | 512 | 989 | 578 | mean annual degrees days |+/- 46 |+/- 72 |+/- 131 |+/- 94 | +/- 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| | 23736 | 13871 | 183 | 2 | mean annual degrees hours |+/- 3144 |+/- 2248 |+/- 141 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 30.7| 29.6| 27.1| 23.0| 17.6| 14.0| 13.7| 16.3| 21.0| 24.8| 27.3| 28.9| Average Temperature (DB) | 1.5| 1.9| 2.2| 1.8| 1.7| 1.3| 1.2| 1.3| 1.5| 1.7| 1.8| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 0| 12| 86| 732| 1733| 2013| 1223| 372| 90| 20| 1| HD-Hr base 15 °C | 4| 1| 25| 102| 386| 531| 480| 392| 203| 80| 29| 3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6| 7| 78| 329| 1642| 3118| 3481| 2323| 884| 294| 100| 22| HD-Hr base 18 °C | 26| 15| 116| 263| 622| 693| 660| 560| 359| 192| 105| 33| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4970| 3945| 3023| 1247| 233| 21| 20| 153| 897| 2136| 3105| 3985| CD-Hr base 24 °C | 915| 1055| 1088| 541| 190| 31| 27| 117| 350| 648| 845| 740| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3239| 2470| 1733| 533| 54| 2| 1| 28| 368| 1135| 1843| 2465| CD-Hr base 27 °C | 750| 832| 771| 320| 71| 4| 3| 35| 183| 427| 619| 583| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 47| 78| 34| 1| 0| 0| 0| 0| 0| 0| 1| 21| NECD-Hr base 21 °C | 57| 90| 50| 4| 0| 0| 0| 0| 0| 0| 5| 32| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 0| 3| 1| 1| 0| 0| 0| 0| 0| 0| 2| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.7| 16.9| 15.1| 12.5| 9.6| 7.4| NaN| 7.4| NaN| NaN| 14.0| 15.8| Average Wet Bulb Temp (WB) | 1.1| 1.5| 1.4| 1.1| 1.3| 1.4| NaN| 0.9| NaN| NaN| 1.0| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.84% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.5| 40.6| 38.2| 34.6| 29.9| 25.7| 25.8| 29.3| 34.1| 37.7| 39.8| 40.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.0| 40.0| 38.3| 34.2| 29.5| 24.9| 25.0| 28.3| 33.1| 36.7| 39.2| 40.1| Design maximum DB | 30.3| 29.1| 27.5| 24.0| 19.1| 15.4| 14.6| 17.3| 21.8| 25.2| 28.0| 29.0| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.5| 18.4| 14.9| 11.0| 6.1| 3.0| 2.0| 3.6| 6.4| 9.9| 13.4| 16.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.79% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.9| 22.8| 22.2| 18.8| 16.5| 14.5| 13.6| 14.5| 16.4| 18.7| 20.3| 22.0| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.4| 23.0| 22.3| 18.8| 16.1| 14.8| 13.3| 14.3| 15.9| 17.7| 19.4| 21.6| Design maximum WB | 21.9| 22.2| 21.1| 17.5| 15.2| 13.0| 10.9| 11.0| 13.7| 16.2| 18.0| 20.7| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.4| 9.9| 8.2| 5.7| 2.5| 0.4| -0.5| -0.0| 1.7| 3.9| 6.4| 8.4| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|