Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB( 9) station Amberley 45 years (1967-2011)| | BoM 40004 (WMO 94568) -27.63° latitude 152.71° longitude 31.0 m alt| | | |It is now 03-Jul-2013 23:33:21 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/9/AM_9_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/9/AM_9_DB.txt (Dry Design Day)| | B: CZ0206_NatHERS_1967-2011_w.txt => NEW33/9/AM_9_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/9/AM_9_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.7 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.28) => this Design DB was exceeded 9.9 days/year (incl std dev 4.0 days/year). 35.8 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.5 days/year (incl std dev 3.9 days/year). Design drybulb changes 2.1 °C per century (linear regression R² 0.24) ~> 37.1 °C mid century. 24.7 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.93) => this Design WB was exceeded 10.3 days/year (incl std dev 4.7 days/year). 24.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.3 days/year (incl std dev 4.7 days/year). Design wetbulb changes -0.7 °C per century (linear regression R²=-0.15) ~> 24.2 °C mid century. 1.2 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.97) => this Heating DB was insufficient 9.9 days/year (incl std dev 5.6 days/year). -0.1 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.3 days/year (incl std dev 5.6 days/year). Design heating changes -5.9 °C per century (linear regression R²=-0.45) ~> -3.7 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:13 followed by maximum temperature at 15:05. Nighttime cooling rate 0.660 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:30 ~ Max at 15:24 Nighttime cooling rate 0.730 °/hr from 19:56 to 07:21 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -1:53 ~ Max at 16:18 Nighttime cooling rate 0.386 °/hr from 19:49 to 06:46 (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 | | 35.7 DDB / 20.9 CWB | 29.1 CDB / 24.7 DWB | 1.2 DB |11.3 DB| 34.5 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.21 % | 10.29 % | 5.59 % | 0.26 % | 0.39 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 10.40 % | 5.68 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.45 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=249) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7676| 36.0| 19.8| 16.2| 15:24| 05:30| |+/- 936|+/- 0.8|+/- 3.3|+/- 3.3|+/-00:54|+/-02:29| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=303) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5921| 24.8| 20.8| 4.0| 16:18| -1:53| |+/- 1856|+/- 0.7|+/- 1.7|+/- 1.9|+/-02:54|+/-07:47| +/- 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 | | 35.4 / 24.8 | 36.9 / 25.1 || 0.5 | 5.8 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 34.7 DDB / 20.9 CWB | 28.7 CDB / 24.4 DWB | 1.2 DB | 0.4 % | 32.9 DDB / 20.8 CWB | 28.0 CDB / 23.7 DWB | 3.0 DB | 1.0 % | 31.5 DDB / 20.6 CWB | 27.4 CDB / 23.1 DWB | 4.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 393 | 710 | 307 | 111 | mean annual degrees days |+/- 84 |+/- 107 |+/- 54 |+/- 28 | +/- 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| | 7356 | 2665 | 1100 | 43 | mean annual degrees hours |+/- 1285 |+/- 682 |+/- 482 |+/- 41 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.9| 24.4| 22.9| 20.0| 16.5| 13.6| 12.8| 14.2| 17.4| 20.2| 22.3| 24.0| Average Temperature (DB) | 0.8| 0.8| 0.9| 0.9| 1.0| 1.1| 1.1| 0.9| 1.0| 1.1| 1.1| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 5| 25| 263| 1058| 2030| 2580| 2092| 964| 323| 71| 20| HD-Hr base 15 °C | 6| 11| 40| 169| 453| 598| 637| 460| 309| 172| 64| 31| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 29| 37| 154| 774| 2075| 3389| 4048| 3391| 1867| 860| 303| 110| HD-Hr base 18 °C | 32| 42| 134| 295| 574| 676| 704| 527| 407| 305| 162| 103| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1565| 1207| 926| 408| 74| 8| 9| 49| 263| 564| 915| 1370| CD-Hr base 24 °C | 396| 347| 293| 173| 62| 11| 11| 66| 185| 280| 372| 437| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 636| 442| 286| 87| 6| 0| 0| 9| 73| 191| 358| 576| CD-Hr base 27 °C | 257| 214| 162| 74| 14| 1| 1| 25| 83| 144| 225| 270| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 394| 304| 123| 14| 1| 0| 0| 0| 0| 5| 46| 214| NECD-Hr base 21 °C | 230| 223| 115| 22| 4| 0| 0| 1| 0| 8| 53| 172| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19| 13| 3| 0| 0| 0| 0| 0| 0| 0| 1| 7| NECD-Hr base 24 °C | 24| 26| 7| 1| 0| 0| 0| 0| 0| 0| 3| 18| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.2| 20.1| 18.6| 15.9| 12.9| 10.1| 8.9| 9.6| 12.3| 15.1| 17.2| 19.1| Average Wet Bulb Temp (WB) | 0.9| 0.8| 0.9| 0.8| 1.2| 1.2| 1.4| 1.2| 1.2| 1.0| 0.9| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.80% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.5| 35.2| 33.7| 31.4| 27.9| 25.3| 25.5| 27.9| 31.7| 34.2| 35.7| 36.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.8| 35.0| 33.5| 31.2| 27.4| 24.9| 25.0| 27.3| 31.4| 33.4| 35.1| 35.8| Design maximum DB | 24.5| 24.4| 22.7| 20.1| 17.6| 15.3| 14.3| 14.7| 17.2| 20.3| 22.4| 23.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.5| 15.0| 12.9| 7.8| 3.8| 0.6| -0.4| 0.1| 3.6| 7.1| 10.8| 13.1| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.37% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.3| 24.9| 23.8| 21.8| 19.6| 17.7| 16.8| 17.6| 19.5| 21.4| 23.2| 24.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.8| 24.5| 23.5| 21.5| 19.5| 17.3| 16.7| 16.9| 19.0| 20.9| 22.9| 24.1| Design maximum WB | 23.0| 23.0| 21.6| 19.2| 16.8| 14.6| 13.4| 13.8| 16.0| 18.4| 20.4| 22.0| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.8| 14.0| 11.9| 6.6| 3.0| -0.3| -1.3| -0.8| 2.3| 5.7| 9.1| 11.5| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|