Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(18) station Nowra 45 years (1967-2011)| | BoM 68072 (WMO 94750) -34.95° latitude 150.54° longitude 105.0 m alt| | | |It is now 04-Jul-2013 00:33:39 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/18/NO_18_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/18/NO_18_DB.txt (Dry Design Day)| | B: CZ0604_NatHERS_1967-2011_w.txt => NEW33/18/NO_18_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/18/NO_18_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 33.7 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.82) => this Design DB was exceeded 10.0 days/year (incl std dev 3.7 days/year). 33.9 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.8 days/year (incl std dev 3.7 days/year). Design drybulb changes 1.5 °C per century (linear regression R² 0.13) ~> 34.8 °C mid century. 22.7 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.63) => this Design WB was exceeded 10.4 days/year (incl std dev 4.2 days/year). 22.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.6 days/year (incl std dev 3.9 days/year). Design wetbulb changes 0.1 °C per century (linear regression R²=0.02) ~> 22.8 °C mid century. 4.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.94) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.0 days/year). 3.7 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.6 days/year (incl std dev 4.0 days/year). Design heating changes -0.8 °C per century (linear regression R²=-0.19) ~> 3.2 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:05 followed by maximum temperature at 14:47. Nighttime cooling rate 0.338 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:40 ~ Max at 15:00 Nighttime cooling rate 0.459 °/hr from 19:47 to 07:20 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 01:05 ~ Max at 15:30 Nighttime cooling rate 0.396 °/hr from 19:41 to 06:30 (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 | | 33.7 DDB / 19.2 CWB | 27.2 CDB / 22.7 DWB | 4.9 DB |12.4 DB| 28.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.30 % | 6.20 % | 2.74 % | 0.30 % | 0.74 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 6.34 % | 2.83 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.58 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=121) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7034| 34.3| 16.3| 18.0| 15:00| 03:40| |+/- 1292|+/- 1.2|+/- 3.0|+/- 3.1|+/-01:54|+/-02:22| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=318) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6524| 22.8| 17.2| 5.6| 15:30| 01:05| |+/- 1704|+/- 0.7|+/- 1.8|+/- 1.7|+/-01:54|+/-07:38| +/- 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 | | 34.2 / 22.9 | 36.5 / 23.5 || 3.9 | 6.4 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 33.0 DDB / 19.2 CWB | 27.0 CDB / 22.5 DWB | 4.3 DB | 0.4 % | 30.3 DDB / 19.1 CWB | 25.8 CDB / 21.6 DWB | 5.2 DB | 1.0 % | 28.2 DDB / 18.9 CWB | 24.8 CDB / 20.8 DWB | 6.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 586 | 1163 | 85 | 32 | mean annual degrees days |+/- 49 |+/- 71 |+/- 26 |+/- 14 | +/- 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| | 2043 | 765 | 149 | 5 | mean annual degrees hours |+/- 625 |+/- 331 |+/- 114 |+/- 13 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.7| 20.7| 19.2| 16.6| 13.8| 11.5| 10.6| 11.7| 13.8| 15.9| 17.6| 19.5| Average Temperature (DB) | 0.9| 1.0| 0.9| 0.8| 0.7| 0.7| 0.7| 0.7| 1.0| 0.8| 1.0| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 51| 35| 137| 562| 1525| 2558| 3221| 2674| 1713| 977| 449| 160| HD-Hr base 15 °C | 40| 34| 90| 230| 332| 402| 418| 341| 353| 225| 179| 99| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 356| 289| 676| 1611| 3145| 4466| 5233| 4539| 3244| 2259| 1372| 712| HD-Hr base 18 °C | 147| 135| 249| 391| 424| 454| 466| 432| 497| 355| 333| 245| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 519| 414| 228| 68| 3| 0| 0| 5| 46| 153| 229| 380| CD-Hr base 24 °C | 234| 233| 141| 65| 6| 0| 0| 15| 53| 119| 181| 214| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 212| 161| 68| 14| 0| 0| 0| 0| 12| 58| 92| 148| CD-Hr base 27 °C | 131| 129| 68| 23| 0| 0| 0| 2| 20| 60| 100| 116| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 52| 61| 17| 0| 0| 0| 0| 0| 0| 0| 2| 17| NECD-Hr base 21 °C | 52| 64| 31| 2| 0| 0| 0| 0| 0| 2| 5| 26| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 2| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 8| 8| 3| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.1| 17.4| 16.0| 13.3| 10.8| 8.6| 7.4| 8.0| 9.8| 11.9| 13.8| 15.5| Average Wet Bulb Temp (WB) | 0.9| 0.9| 0.9| 1.0| 0.9| 0.8| 0.8| 0.9| 0.9| 0.9| 1.0| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.37% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.6| 35.5| 32.0| 28.8| 24.2| 20.6| 20.4| 23.5| 28.1| 31.8| 33.0| 35.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 33.8| 33.3| 30.5| 27.6| 23.6| 19.8| 19.4| 22.5| 26.7| 30.3| 31.2| 32.7| Design maximum DB | 21.4| 21.7| 20.2| 17.9| 15.7| 13.6| 12.5| 13.5| 16.0| 17.4| 19.0| 20.2| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 11.7| 12.3| 10.4| 7.6| 5.6| 3.9| 2.9| 2.9| 4.4| 5.7| 8.0| 9.8| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 5.04% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.6| 23.6| 22.1| 19.6| 17.0| 14.6| 13.5| 14.8| 16.8| 19.2| 20.9| 22.6| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.6| 22.8| 21.5| 18.9| 16.7| 14.0| 12.9| 13.9| 16.0| 17.9| 19.9| 21.5| Design maximum WB | 19.7| 20.2| 18.7| 16.2| 14.0| 11.7| 9.9| 10.5| 12.7| 14.9| 16.9| 18.4| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.7| 10.4| 8.2| 5.6| 3.9| 2.5| 1.7| 1.7| 2.8| 4.1| 6.2| 7.7| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|