Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(46) station Cobar 45 years (1967-2011)| | BoM 48027 (WMO 94711) -31.48° latitude 145.83° longitude 263.6 m alt| | | |It is now 04-Jul-2013 03:36:51 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/46/CO_46_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/46/CO_46_DB.txt (Dry Design Day)| | B: CZ0409_NatHERS_1967-2011_w.txt => NEW33/46/CO_46_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/46/CO_46_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 39.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.26) => this Design DB was exceeded 9.9 days/year (incl std dev 4.3 days/year). 39.7 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.2 days/year (incl std dev 4.0 days/year). Design drybulb changes 4.1 °C per century (linear regression R² 0.37) ~> 42.2 °C mid century. 21.9 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.11) => this Design WB was exceeded 10.1 days/year (incl std dev 4.5 days/year). 22.1 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 8.9 days/year (incl std dev 4.0 days/year). Design wetbulb changes 2.5 °C per century (linear regression R²=0.34) ~> 23.6 °C mid century. 2.1 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.13) => this Heating DB was insufficient 10.0 days/year (incl std dev 4.5 days/year). 1.8 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.3 days/year (incl std dev 3.7 days/year). Design heating changes -1.3 °C per century (linear regression R²=-0.27) ~> 0.9 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:39 followed by maximum temperature at 16:04. Nighttime cooling rate 0.661 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:42 ~ Max at 16:06 Nighttime cooling rate 0.918 °/hr from 19:59 to 06:49 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:31 ~ Max at 16:12 Nighttime cooling rate 0.451 °/hr from 19:45 to 06:58 (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 | | 39.5 DDB / 18.6 CWB | 28.2 CDB / 21.9 DWB | 2.1 DB |12.7 DB| 37.4 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 5.37 % | 13.92 % | 0.39 % | 0.29 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 5.47 % | 14.14 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.65 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=219) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7829| 39.9| 25.2| 14.7| 16:06| 05:42| |+/- 914|+/- 0.7|+/- 2.2|+/- 2.3|+/-01:24|+/-02:53| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=213) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6055| 22.3| 18.2| 4.1| 16:12| -2:31| |+/- 1877|+/- 0.8|+/- 2.0|+/- 1.9|+/-04:30|+/-08:16| +/- 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 / 22.4 | 40.7 / 22.6 || 2.0 | 3.7 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 39.0 DDB / 18.5 CWB | 28.2 CDB / 21.9 DWB | 2.5 DB | 0.4 % | 37.1 DDB / 18.1 CWB | 28.1 CDB / 21.0 DWB | 3.7 DB | 1.0 % | 35.6 DDB / 17.7 CWB | 28.3 CDB / 20.1 DWB | 4.8 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 574 | 1012 | 500 | 265 | mean annual degrees days |+/- 62 |+/- 87 |+/- 100 |+/- 69 | +/- 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| | 12002 | 6359 | 79 | 2 | mean annual degrees hours |+/- 2404 |+/- 1663 |+/- 79 |+/- 3 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.4| 26.6| 23.4| 18.8| 14.1| 10.9| 10.1| 12.0| 15.5| 19.3| 22.7| 25.7| Average Temperature (DB) | 1.9| 1.8| 1.3| 1.3| 0.9| 1.0| 0.8| 1.4| 1.5| 1.5| 1.8| 1.5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9| 10| 74| 456| 1643| 3044| 3644| 2771| 1411| 542| 154| 28| HD-Hr base 15 °C | 19| 17| 60| 221| 404| 574| 504| 560| 384| 220| 107| 28| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 63| 63| 293| 1151| 3112| 4896| 5617| 4515| 2638| 1281| 499| 158| HD-Hr base 18 °C | 69| 61| 160| 390| 517| 660| 576| 744| 577| 402| 241| 91| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3174| 2490| 1442| 339| 19| 0| 0| 18| 162| 594| 1339| 2425| CD-Hr base 24 °C | 973| 832| 510| 228| 27| 1| 1| 43| 136| 307| 636| 717| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1881| 1410| 670| 92| 1| 0| 0| 2| 45| 239| 668| 1351| CD-Hr base 27 °C | 715| 613| 342| 97| 2| 0| 0| 10| 50| 163| 428| 514| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 29| 35| 5| 1| 0| 0| 0| 0| 0| 0| 1| 9| NECD-Hr base 21 °C | 40| 61| 19| 3| 0| 0| 0| 0| 0| 0| 2| 19| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 2| 3| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.0| 16.3| 14.3| 11.8| 9.5| 7.6| 6.5| 7.0| 8.8| 11.0| 13.0| 14.3| Average Wet Bulb Temp (WB) | 1.4| 1.3| 1.3| 1.3| 1.1| 1.0| 1.0| 0.9| 1.0| 0.9| 1.0| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.52% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.7| 39.3| 36.0| 31.1| 25.8| 21.5| 20.9| 24.6| 30.4| 34.4| 37.2| 39.5| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 39.6| 38.7| 35.2| 30.2| 25.0| 20.7| 19.7| 23.7| 28.9| 33.0| 36.0| 38.0| Design maximum DB | 26.9| 26.7| 23.0| 19.0| 15.0| 12.4| 11.1| 12.7| 16.0| 20.0| 23.4| 25.6| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.3| 13.7| 10.4| 6.5| 3.3| 1.3| 0.7| 1.3| 3.5| 6.2| 9.3| 12.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.86% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.8| 22.3| 20.6| 18.3| 16.2| 13.8| 12.8| 13.9| 15.9| 18.1| 20.1| 21.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.6| 22.0| 20.1| 18.4| 16.0| 13.6| 12.4| 13.5| 15.5| 17.3| 19.2| 20.6| Design maximum WB | 20.4| 20.6| 18.3| 16.7| 13.7| 11.5| 10.4| 10.5| 12.5| 15.0| 17.5| 18.8| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.0| 8.2| 6.5| 3.9| 2.1| 0.7| -0.1| 0.0| 1.5| 3.0| 4.9| 6.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|