Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(12) station Geraldton 45 years (1967-2011)| | BoM 8051 (WMO 94403) -28.80° latitude 114.70° longitude 35.0 m alt| | | |It is now 03-Jul-2013 23:53:29 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/12/GE_12_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/12/GE_12_DB.txt (Dry Design Day)| | B: CZ0503_NatHERS_1967-2011_w.txt => NEW33/12/GE_12_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/12/GE_12_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 39.9 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.90) => this Design DB was exceeded 10.3 days/year (incl std dev 3.5 days/year). 40.0 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.9 days/year (incl std dev 3.4 days/year). Design drybulb changes -0.8 °C per century (linear regression R² -0.09) ~> 39.5 °C mid century. 22.9 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.34) => this Design WB was exceeded 10.4 days/year (incl std dev 5.0 days/year). 23.0 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.7 days/year (incl std dev 4.9 days/year). Design wetbulb changes 0.3 °C per century (linear regression R²=0.06) ~> 23.2 °C mid century. 6.3 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.01) => this Heating DB was insufficient 9.4 days/year (incl std dev 4.7 days/year). 4.8 ° 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 4.5 days/year). Design heating changes -0.3 °C per century (linear regression R²=-0.04) ~> 4.6 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:25 followed by maximum temperature at 14:28. Nighttime cooling rate 0.372 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 02:23 ~ Max at 14:18 Nighttime cooling rate 0.186 °/hr from 19:53 to 07:29 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:45 ~ Max at 15:36 Nighttime cooling rate 0.282 °/hr from 19:56 to 07:8 (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 | | 39.9 DDB / 19.3 CWB | 28.6 CDB / 22.9 DWB | 6.3 DB |14.9 DB| 33.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.22 % | 8.75 % | 7.05 % | 0.29 % | 0.78 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 8.84 % | 7.19 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.51 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=171) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7965| 40.6| 21.4| 19.2| 14:18| 02:23| |+/- 1131|+/- 1.2|+/- 3.5|+/- 3.8|+/-01:00|+/-03:41| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=282) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6851| 23.1| 18.4| 4.7| 15:36| -2:45| |+/- 1762|+/- 0.9|+/- 2.3|+/- 2.4|+/-04:36|+/-08:56| +/- 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 | | 39.7 / 23.1 | 41.1 / 23.3 || 5.0 | 8.6 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 38.7 DDB / 19.1 CWB | 28.5 CDB / 22.7 DWB | 5.4 DB | 0.4 % | 36.4 DDB / 18.7 CWB | 27.6 CDB / 21.9 DWB | 6.6 DB | 1.0 % | 34.0 DDB / 18.3 CWB | 26.9 CDB / 21.2 DWB | 7.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 290 | 641 | 310 | 152 | mean annual degrees days |+/- 54 |+/- 88 |+/- 53 |+/- 31 | +/- 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| | 7434 | 3648 | 197 | 4 | mean annual degrees hours |+/- 1271 |+/- 733 |+/- 187 |+/- 10 | +/- 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| 25.2| 23.8| 20.9| 17.8| 15.3| 13.9| 13.9| 15.2| 17.6| 20.3| 22.5| Average Temperature (DB) | 1.2| 1.4| 1.2| 1.1| 1.1| 0.9| 0.9| 1.2| 1.0| 1.1| 1.1| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15| 9| 30| 124| 445| 962| 1537| 1606| 1254| 712| 204| 52| HD-Hr base 15 °C | 14| 11| 26| 84| 261| 342| 414| 445| 290| 248| 102| 34| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 118| 69| 167| 480| 1280| 2211| 3062| 3085| 2460| 1561| 635| 263| HD-Hr base 18 °C | 68| 47| 92| 202| 449| 494| 541| 616| 438| 422| 240| 121| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1556| 1816| 1470| 570| 145| 12| 4| 6| 61| 239| 545| 1011| CD-Hr base 24 °C | 576| 596| 456| 246| 109| 14| 10| 13| 57| 155| 264| 385| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 822| 983| 733| 212| 31| 0| 0| 0| 15| 98| 251| 501| CD-Hr base 27 °C | 401| 403| 298| 132| 36| 1| 1| 0| 20| 85| 156| 244| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 47| 89| 46| 5| 1| 0| 0| 0| 0| 0| 1| 8| NECD-Hr base 21 °C | 65| 118| 62| 6| 3| 0| 0| 0| 0| 0| 3| 13| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 2| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 2| 8| 3| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.6| 18.2| 17.0| 15.3| 13.1| 11.7| 10.9| 11.0| 11.6| 12.9| 14.6| 16.3| Average Wet Bulb Temp (WB) | 0.7| 0.9| 1.0| 0.9| 1.2| 1.0| 0.9| 1.2| 0.9| 1.0| 1.0| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.73% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.6| 41.4| 39.4| 34.6| 30.1| 25.5| 23.5| 24.8| 29.1| 34.1| 37.3| 40.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.0| 39.8| 37.9| 33.2| 28.7| 24.7| 22.9| 23.9| 27.4| 31.9| 35.0| 37.9| Design maximum DB | 25.1| 27.0| 26.0| 22.1| 19.6| 17.2| 16.2| 15.9| 16.3| 18.4| 20.5| 23.0| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.9| 13.6| 11.9| 10.2| 8.6| 6.0| 4.5| 4.4| 4.5| 5.6| 8.4| 11.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.93% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.5| 23.6| 23.1| 21.8| 20.4| 18.5| 17.9| 17.7| 18.2| 19.0| 20.3| 21.8| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.3| 23.0| 22.2| 20.7| 19.2| 17.4| 17.1| 17.3| 17.5| 18.6| 19.7| 21.0| Design maximum WB | 20.6| 21.5| 20.8| 19.0| 17.3| 15.6| 14.7| 14.8| 14.9| 16.3| 17.7| 19.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.9| 10.4| 8.7| 7.3| 6.0| 4.0| 3.3| 3.3| 3.8| 4.7| 6.9| 9.0| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|