Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(66) station Ballarat 45 years (1967-2011)| | BoM 89002 (WMO 94852) -37.51° latitude 143.79° longitude 435.6 m alt| | | |It is now 04-Jul-2013 05:33:30 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/66/BA_66_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/66/BA_66_DB.txt (Dry Design Day)| | B: CZ0705_NatHERS_1967-2011_w.txt => NEW33/66/BA_66_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/66/BA_66_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 33.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.31) => this Design DB was exceeded 9.3 days/year (incl std dev 4.1 days/year). 33.6 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.9 days/year (incl std dev 3.9 days/year). Design drybulb changes 2.1 °C per century (linear regression R² 0.17) ~> 34.9 °C mid century. 19.1 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.85) => this Design WB was exceeded 10.1 days/year (incl std dev 4.9 days/year). 19.2 ° 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 4.6 days/year). Design wetbulb changes 4.0 °C per century (linear regression R²=0.48) ~> 21.6 °C mid century. 0.6 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.54) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.6 days/year). -2.5 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 2.4 days/year (incl std dev 1.4 days/year). Design heating changes -5.7 °C per century (linear regression R²=-0.22) ~> -6.0 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:46 followed by maximum temperature at 15:23. Nighttime cooling rate 0.379 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:49 ~ Max at 15:48 Nighttime cooling rate 0.551 °/hr from 20:13 to 06:44 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:53 ~ Max at 15:36 Nighttime cooling rate 0.461 °/hr from 19:53 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 | | 33.4 DDB / 16.8 CWB | 25.6 CDB / 19.1 DWB | 0.6 DB |11.8 DB| 32.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.25 % | 2.01 % | 4.89 % | 0.36 % | 0.69 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.10 % | 5.06 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.57 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=380) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6471| 33.5| 19.8| 13.7| 15:48| 03:49| |+/- 1302|+/- 0.7|+/- 3.5|+/- 3.9|+/-00:48|+/-03:39| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=221) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5854| 19.3| 13.2| 6.2| 15:36| 00:53| |+/- 1846|+/- 0.9|+/- 2.5|+/- 2.5|+/-02:36|+/-07:29| +/- 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 | | 33.4 / 19.6 | 35.0 / 20.3 || -0.6 | 1.7 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 32.9 DDB / 16.7 CWB | 25.5 CDB / 19.0 DWB | 0.0 DB | 0.4 % | 31.2 DDB / 16.0 CWB | 25.1 CDB / 17.9 DWB | 1.1 DB | 1.0 % | 29.2 DDB / 15.7 CWB | 25.3 CDB / 16.9 DWB | 2.1 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1488 | 2266 | 95 | 39 | mean annual degrees days |+/- 423 |+/- 580 |+/- 86 |+/- 37 | +/- 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| | 2279 | 939 | 9 | 1 | mean annual degrees hours |+/- 2054 |+/- 894 |+/- 16 |+/- 4 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.4| 18.6| 16.2| 13.1| 10.2| 8.1| 7.1| 7.7| 9.4| 11.5| 13.9| 16.0| Average Temperature (DB) | 3.1| 3.0| 3.0| 3.0| 2.8| 2.7| 2.4| 2.5| 2.6| 2.6| 2.6| 2.7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 947| 786| 1347| 2296| 3708| 4847| 5654| 5280| 4085| 3146| 2077| 1528| HD-Hr base 15 °C | 496| 375| 602| 909| 1297| 1590| 1524| 1473| 1261| 1007| 730| 597| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1857| 1586| 2506| 3805| 5626| 6835| 7742| 7345| 5990| 4888| 3480| 2720| HD-Hr base 18 °C | 841| 667| 980| 1382| 1732| 1839| 1707| 1699| 1579| 1396| 1118| 941| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 709| 665| 329| 57| 0| 0| 0| 0| 0| 19| 124| 377| CD-Hr base 24 °C | 609| 581| 411| 126| 1| 0| 0| 0| 1| 35| 168| 382| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 331| 307| 120| 2| 0| 0| 0| 0| 0| 2| 26| 151| CD-Hr base 27 °C | 326| 323| 182| 5| 0| 0| 0| 0| 0| 4| 42| 164| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 4| 0| 0| 0| 0| 0| 0| 0| 0| 0| 3| NECD-Hr base 21 °C | 5| 9| 2| 0| 0| 0| 0| 0| 0| 0| 0| 12| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 24 °C | 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.3| 12.7| 11.1| 9.2| 7.6| 6.1| 5.2| 5.4| 6.5| 8.0| 9.8| 10.8| Average Wet Bulb Temp (WB) | 1.3| 1.2| 1.2| 1.2| 1.1| 1.1| 1.1| 1.2| 1.2| 1.1| 1.3| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.09% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.4| 34.8| 31.2| 26.1| 19.9| 14.9| 14.3| 16.4| 20.3| 24.9| 29.0| 33.0| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 33.5| 33.4| 31.0| 27.2| 22.8| 19.5| 18.8| 20.4| 22.5| 25.1| 27.6| 31.3| Design maximum DB | 21.7| 22.0| 20.4| 18.3| 15.7| 14.2| 13.5| 13.7| 15.2| 16.2| 18.2| 19.5| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5.7| 6.3| 4.5| 2.3| 1.4| 0.4| -0.1| -0.1| 0.2| 0.8| 2.7| 3.2| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.87% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.6| 20.2| 18.0| 15.4| 13.2| 10.9| 10.2| 10.9| 12.9| 15.4| 17.2| 18.7| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.2| 19.1| 17.4| 15.1| 13.0| 10.6| 9.8| 10.6| 12.8| 15.2| 17.0| 17.8| Design maximum WB | 16.1| 16.5| 14.4| 12.1| 10.6| 8.6| 7.5| 7.5| 9.5| 11.1| 13.3| 14.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4.4| 4.9| 3.4| 1.3| 0.5| -0.6| -1.0| -1.0| -0.7| -0.1| 1.9| 2.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|