Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(74) station Katherine 45 years (1967-2011)| | BoM 14932 (WMO 94131) -14.52° latitude 132.38° longitude 135.0 m alt| | | |It is now 04-Jul-2013 06:17:07 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/74/KN_74_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/74/KN_74_DB.txt (Dry Design Day)| | B: CZ0103_NatHERS_1967-2011_w.txt => NEW33/74/KN_74_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/74/KN_74_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 39.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.72) => this Design DB was exceeded 10.1 days/year (incl std dev 4.8 days/year). 39.4 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.4 days/year (incl std dev 4.2 days/year). Design drybulb changes -0.7 °C per century (linear regression R² -0.13) ~> 39.0 °C mid century. 27.4 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.46) => this Design WB was exceeded 10.0 days/year (incl std dev 6.4 days/year). 27.9 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 8.5 days/year (incl std dev 5.7 days/year). Design wetbulb changes 3.5 °C per century (linear regression R²=0.36) ~> 30.0 °C mid century. 9.6 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.09) => this Heating DB was insufficient 9.9 days/year (incl std dev 5.8 days/year). 9.4 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.2 days/year (incl std dev 5.6 days/year). Design heating changes -9.7 °C per century (linear regression R²=-0.69) ~> 3.5 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 06:11 followed by maximum temperature at 16:07. Nighttime cooling rate 0.603 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 06:27 ~ Max at 16:18 Nighttime cooling rate 0.692 °/hr from 19:50 to 06:58 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:57 ~ Max at 16:36 Nighttime cooling rate 0.434 °/hr from 19:59 to 07:12 (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 | | 39.3 DDB / 21.1 CWB | 31.2 CDB / 27.4 DWB | 9.6 DB |11.8 DB| 29.7 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.13 % | 45.64 % | 22.22 % | 0.21 % | 0.20 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 45.71 % | 22.33 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.33 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=346) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7298| 39.4| 26.4| 12.9| 16:18| 06:27| |+/- 521|+/- 0.7|+/- 2.3|+/- 2.3|+/-01:00|+/-02:13| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=76) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6452| 27.6| 21.9| 5.7| 16:36| -2:57| |+/- 972|+/- 1.0|+/- 3.6|+/- 3.8|+/-03:06|+/-08:11| +/- 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 | | 39.0 / 27.2 | 39.5 / 28.0 || 9.9 | 13.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 38.6 DDB / 21.1 CWB | 31.0 CDB / 26.6 DWB | 10.5 DB | 0.4 % | 37.8 DDB / 21.3 CWB | 30.2 CDB / 26.0 DWB | 12.0 DB | 1.0 % | 37.0 DDB / 21.5 CWB | 30.0 CDB / 25.7 DWB | 13.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 27 | 88 | 1411 | 763 | mean annual degrees days |+/- 23 |+/- 52 |+/- 188 |+/- 129 | +/- 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| | 33876 | 18320 | 9934 | 1333 | mean annual degrees hours |+/- 4507 |+/- 3098 |+/- 1951 |+/- 612 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28.4| 27.9| 27.7| 26.9| 24.2| 21.7| 21.5| 23.8| 27.8| 30.5| 30.4| 29.3| Average Temperature (DB) | 1.1| 1.1| 1.3| 1.2| 1.6| 1.6| 1.4| 1.5| 1.4| 1.1| 1.2| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 1| 4| 53| 220| 254| 107| 8| 0| 0| 0| HD-Hr base 15 °C | 1| 1| 2| 11| 81| 224| 224| 129| 20| 2| 1| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4| 4| 8| 28| 222| 647| 759| 392| 40| 4| 3| 3| HD-Hr base 18 °C | 10| 8| 14| 53| 247| 434| 420| 312| 71| 7| 6| 8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3303| 2706| 2986| 2603| 1792| 1046| 1112| 1825| 3211| 4786| 4551| 3956| CD-Hr base 24 °C | 708| 666| 730| 532| 479| 381| 315| 422| 603| 682| 735| 767| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1684| 1308| 1524| 1387| 863| 418| 443| 917| 1876| 2944| 2757| 2199| CD-Hr base 27 °C | 516| 469| 490| 372| 315| 215| 180| 289| 414| 529| 563| 573| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2138| 1938| 1464| 425| 123| 12| 29| 42| 103| 531| 1169| 1961| NECD-Hr base 21 °C | 397| 356| 521| 344| 184| 29| 117| 179| 151| 522| 420| 506| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 371| 328| 153| 21| 14| 2| 5| 5| 10| 49| 84| 291| NECD-Hr base 24 °C | 194| 169| 119| 48| 56| 8| 18| 20| 24| 145| 81| 243| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.9| 23.9| 22.7| 20.1| 17.2| 14.2| 13.6| 14.8| 17.3| 20.3| 22.3| 23.7| Average Wet Bulb Temp (WB) | 0.6| 0.6| 1.0| 1.2| 1.6| 1.3| 1.6| 1.7| 1.5| 1.6| 0.9| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.59% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.5| 36.2| 36.0| 35.9| 34.4| 33.0| 33.2| 35.3| 37.6| 39.4| 39.8| 38.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.0| 36.2| 36.2| 35.9| 34.8| 33.0| 33.3| 35.5| 37.4| 39.4| 39.3| 38.5| Design maximum DB | 28.3| 27.7| 26.6| 24.9| 22.8| 20.0| 19.6| 21.6| 25.3| 27.6| 28.6| 28.6| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.8| 19.4| 18.4| 16.4| 12.2| 9.5| 8.9| 11.0| 15.7| 18.4| 19.6| 20.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 1.00% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.9| 26.8| 26.4| 25.3| 23.6| 21.6| 21.3| 21.9| 24.3| 25.9| 26.4| 26.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.3| 26.9| 26.4| 25.2| 26.8| 22.3| 24.2| 24.9| 25.2| 26.9| 26.9| 27.9| Design maximum WB | 25.7| 25.5| 25.1| 24.1| 23.0| 19.6| 19.4| 20.3| 23.0| 25.1| 25.5| 25.8| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.2| 18.4| 16.7| 13.3| 9.1| 6.0| 5.4| 6.6| 9.6| 12.7| 16.3| 18.0| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|