Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(20) station Wagga 45 years (1967-2011)| | BoM 72150 (WMO 94910) -35.16° latitude 147.46° longitude 213.0 m alt| | | |It is now 04-Jul-2013 00:47:59 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/20/WA_20_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/20/WA_20_DB.txt (Dry Design Day)| | B: CZ0414_NatHERS_1967-2011_w.txt => NEW33/20/WA_20_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/20/WA_20_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 37.8 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.38) => this Design DB was exceeded 10.3 days/year (incl std dev 4.3 days/year). 38.0 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.7 days/year (incl std dev 3.9 days/year). Design drybulb changes 3.3 °C per century (linear regression R² 0.24) ~> 40.0 °C mid century. 21.1 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.83) => this Design WB was exceeded 10.1 days/year (incl std dev 4.6 days/year). 21.1 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.1 days/year (incl std dev 4.6 days/year). Design wetbulb changes -0.8 °C per century (linear regression R²=-0.13) ~> 20.6 °C mid century. -1.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.06) => this Heating DB was insufficient 10.5 days/year (incl std dev 4.6 days/year). -1.4 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.1 days/year (incl std dev 4.7 days/year). Design heating changes 0.1 °C per century (linear regression R²=0.02) ~> -1.4 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:25 followed by maximum temperature at 15:55. Nighttime cooling rate 0.624 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:14 ~ Max at 15:54 Nighttime cooling rate 0.961 °/hr from 19:49 to 07:21 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -1:07 ~ Max at 15:48 Nighttime cooling rate 0.629 °/hr from 19:44 to 06:41 (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 | | 37.8 DDB / 18.3 CWB | 28.0 CDB / 21.1 DWB | -1.0 DB |13.9 DB| 38.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 3.70 % | 7.31 % | 0.32 % | 0.31 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 3.81 % | 7.48 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.58 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=182) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7717| 38.2| 20.9| 17.3| 15:54| 05:14| |+/- 1200|+/- 0.8|+/- 3.5|+/- 3.6|+/-01:12|+/-02:00| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=238) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5977| 21.4| 16.6| 4.8| 15:48| -1:07| |+/- 2108|+/- 0.8|+/- 1.9|+/- 1.7|+/-03:30|+/-08:08| +/- 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 | | 38.0 / 21.4 | 39.2 / 21.8 || -1.0 | 0.6 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 37.0 DDB / 18.1 CWB | 28.0 CDB / 20.9 DWB | -0.6 DB | 0.4 % | 35.0 DDB / 17.6 CWB | 27.7 CDB / 20.0 DWB | 0.6 DB | 1.0 % | 33.0 DDB / 17.1 CWB | 27.5 CDB / 19.2 DWB | 1.8 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1058 | 1667 | 261 | 127 | mean annual degrees days |+/- 80 |+/- 102 |+/- 72 |+/- 47 | +/- 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| | 6253 | 3048 | 28 | 0 | mean annual degrees hours |+/- 1732 |+/- 1118 |+/- 47 |+/- 1 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.1| 23.7| 20.3| 15.5| 11.3| 8.4| 7.4| 8.8| 11.2| 14.6| 18.5| 21.7| Average Temperature (DB) | 2.0| 1.7| 1.4| 1.3| 1.0| 1.1| 0.9| 0.8| 1.1| 1.3| 1.9| 1.5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 117| 93| 392| 1335| 3002| 4561| 5375| 4521| 3101| 1802| 779| 324| HD-Hr base 15 °C | 98| 88| 211| 481| 553| 692| 628| 470| 530| 383| 309| 154| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 373| 304| 956| 2520| 4813| 6577| 7495| 6564| 4850| 3146| 1589| 811| HD-Hr base 18 °C | 246| 208| 391| 641| 620| 731| 639| 523| 637| 557| 502| 288| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1935| 1537| 748| 104| 3| 0| 0| 0| 9| 122| 564| 1231| CD-Hr base 24 °C | 770| 600| 358| 87| 8| 0| 0| 1| 17| 135| 421| 499| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1054| 785| 298| 18| 0| 0| 0| 0| 1| 37| 249| 606| CD-Hr base 27 °C | 543| 423| 219| 27| 0| 0| 0| 0| 3| 53| 251| 320| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10| 14| 1| 0| 0| 0| 0| 0| 0| 0| 0| 4| NECD-Hr base 21 °C | 17| 37| 3| 0| 0| 0| 0| 0| 0| 0| 1| 14| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 1| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.0| 15.4| 13.3| 10.7| 8.5| 6.5| 5.6| 6.4| 8.1| 10.1| 12.0| 13.3| Average Wet Bulb Temp (WB) | 1.4| 1.3| 1.3| 1.3| 1.1| 1.0| 0.9| 0.8| 1.0| 1.0| 1.1| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 7.74% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 39.5| 37.7| 34.3| 28.9| 23.2| 18.4| 17.0| 19.9| 24.3| 29.5| 34.6| 37.4| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.9| 36.8| 32.8| 27.3| 22.0| 17.3| 15.9| 18.6| 22.7| 27.5| 32.7| 35.4| Design maximum DB | 24.0| 23.2| 20.2| 16.3| 13.3| 10.6| 9.2| 10.0| 12.4| 15.5| 18.9| 21.2| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.6| 10.0| 6.8| 2.9| 0.1| -1.4| -2.3| -1.6| -0.3| 1.6| 4.0| 7.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.44% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.6| 21.5| 19.8| 17.9| 15.3| 13.2| 12.0| 13.3| 15.7| 18.1| 19.5| 20.4| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.2| 21.1| 19.5| 17.4| 15.2| 12.7| 11.7| 13.0| 15.6| 17.6| 18.9| 19.9| Design maximum WB | 19.3| 19.1| 17.7| 15.2| 13.1| 10.7| 9.6| 9.6| 12.0| 14.1| 16.5| 17.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6.4| 7.1| 5.0| 2.0| -0.4| -1.8| -2.6| -1.9| -0.7| 1.0| 2.8| 4.7| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|