Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB( 5) station Townsville 45 years (1967-2011)| | BoM 32040 (WMO 94294) -19.25° latitude 146.77° longitude 9.1 m alt| | | |It is now 03-Jul-2013 23:06:33 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/5/TO_5_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/5/TO_5_DB.txt (Dry Design Day)| | B: CZ0109_NatHERS_1967-2011_w.txt => NEW33/5/TO_5_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/5/TO_5_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 33.8 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.42) => this Design DB was exceeded 10.1 days/year (incl std dev 4.6 days/year). 33.9 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.7 days/year (incl std dev 4.5 days/year). Design drybulb changes 0.7 °C per century (linear regression R² 0.10) ~> 34.3 °C mid century. 26.7 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.10) => this Design WB was exceeded 9.2 days/year (incl std dev 4.2 days/year). 26.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.2 days/year (incl std dev 4.2 days/year). Design wetbulb changes 1.6 °C per century (linear regression R²=0.43) ~> 27.7 °C mid century. 10.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.04) => this Heating DB was insufficient 10.1 days/year (incl std dev 5.3 days/year). 9.1 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.0 days/year (incl std dev 4.6 days/year). Design heating changes -0.8 °C per century (linear regression R²=-0.08) ~> 8.6 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:33 followed by maximum temperature at 14:26. Nighttime cooling rate 0.353 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:43 ~ Max at 14:30 Nighttime cooling rate 0.310 °/hr from 19:45 to 07:26 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:16 ~ Max at 16:06 Nighttime cooling rate 0.200 °/hr from Inf:NaN to 06:56 (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 | | 33.8 DDB / 23.3 CWB | 29.9 CDB / 26.7 DWB | 10.9 DB | 6.0 DB| 22.9 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.22 % | 17.30 % | 7.01 % | 0.23 % | 0.68 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 17.42 % | 7.09 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.44 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=334) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7338| 33.8| 25.0| 8.8| 14:30| 05:43| |+/- 1065|+/- 0.7|+/- 2.5|+/- 2.7|+/-01:00|+/-02:12| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=466) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6364| 26.6| 23.7| 2.9| 16:06| -3:16| |+/- 1460|+/- 0.5|+/- 1.3|+/- 1.2|+/-04:12|+/-08:16| +/- 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 | | 33.7 / 26.7 | 35.0 / 26.9 || 9.3 | 14.5 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 33.1 DDB / 23.6 CWB | 29.7 CDB / 26.5 DWB | 10.0 DB | 0.4 % | 32.2 DDB / 23.8 CWB | 29.2 CDB / 26.0 DWB | 11.7 DB | 1.0 % | 31.5 DDB / 23.6 CWB | 28.9 CDB / 25.6 DWB | 13.3 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 31 | 94 | 652 | 200 | mean annual degrees days |+/- 15 |+/- 32 |+/- 87 |+/- 45 | +/- 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| | 15636 | 4802 | 7557 | 899 | mean annual degrees hours |+/- 2085 |+/- 1074 |+/- 1465 |+/- 419 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.7| 27.4| 26.7| 25.0| 22.5| 20.0| 19.3| 20.4| 22.7| 24.9| 26.5| 27.6| Average Temperature (DB) | 0.8| 0.8| 0.5| 0.6| 0.8| 1.1| 1.0| 0.8| 0.8| 0.8| 0.6| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 1| 36| 197| 310| 164| 25| 1| 0| 0| HD-Hr base 15 °C | 0| 0| 0| 5| 58| 154| 193| 113| 31| 1| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 6| 169| 598| 814| 517| 132| 12| 0| 0| HD-Hr base 18 °C | 0| 0| 0| 14| 156| 311| 371| 236| 101| 18| 2| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2725| 2291| 2089| 1245| 554| 170| 100| 200| 543| 1191| 1909| 2620| CD-Hr base 24 °C | 566| 497| 348| 278| 173| 98| 68| 91| 182| 325| 322| 515| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1038| 809| 678| 316| 64| 7| 2| 11| 75| 270| 578| 955| CD-Hr base 27 °C | 364| 324| 205| 133| 45| 10| 5| 12| 54| 142| 174| 322| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1758| 1697| 1172| 390| 90| 11| 3| 9| 46| 261| 717| 1401| NECD-Hr base 21 °C | 446| 433| 362| 331| 101| 23| 7| 25| 106| 247| 387| 551| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 264| 272| 107| 19| 0| 0| 0| 0| 0| 6| 47| 184| NECD-Hr base 24 °C | 173| 177| 92| 40| 1| 0| 0| 0| 0| 19| 76| 167| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.4| 23.6| 22.4| 20.4| 18.1| 15.5| 14.8| 15.9| 17.6| 19.8| 21.5| 22.8| Average Wet Bulb Temp (WB) | 0.7| 0.7| 0.7| 1.0| 1.1| 1.2| 1.2| 1.0| 1.2| 1.0| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.58% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 34.4| 33.6| 33.0| 31.6| 29.5| 27.9| 27.2| 28.5| 30.9| 32.3| 33.7| 34.5| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 33.9| 33.2| 32.9| 31.3| 29.3| 27.8| 27.0| 28.1| 30.1| 31.7| 33.1| 33.6| Design maximum DB | 27.9| 27.4| 26.2| 25.0| 23.1| 21.4| 20.7| 21.4| 23.2| 25.3| 26.6| 27.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.9| 22.1| 20.5| 17.3| 12.8| 8.9| 7.8| 8.9| 12.7| 16.2| 19.7| 21.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.29% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.0| 26.9| 26.3| 24.4| 23.0| 21.4| 20.5| 21.3| 22.1| 23.9| 25.4| 26.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.8| 26.8| 26.0| 25.0| 23.1| 21.3| 20.8| 21.2| 22.4| 24.2| 25.5| 26.4| Design maximum WB | 25.8| 25.8| 24.8| 23.8| 22.0| 20.1| 19.6| 20.3| 21.6| 23.3| 24.5| 25.7| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.3| 19.2| 17.6| 14.6| 10.0| 6.4| 5.4| 6.2| 9.3| 12.7| 15.9| 18.0| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|