Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(49) station Katanning 45 years (1967-2011)| | BoM 10916 (WMO 94641) -33.69° latitude 117.61° longitude 321.0 m alt| | | |It is now 04-Jul-2013 03:52:54 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/49/KT_49_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/49/KT_49_DB.txt (Dry Design Day)| | B: CZ0412_NatHERS_1967-2011_w.txt => NEW33/49/KT_49_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/49/KT_49_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 36.9 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.37) => this Design DB was exceeded 9.9 days/year (incl std dev 3.5 days/year). 37.1 ° 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 3.3 days/year). Design drybulb changes 1.2 °C per century (linear regression R² 0.13) ~> 37.9 °C mid century. 20.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.72) => this Design WB was exceeded 10.2 days/year (incl std dev 5.1 days/year). 20.4 ° 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 4.9 days/year). Design wetbulb changes -2.4 °C per century (linear regression R²=-0.33) ~> 18.9 °C mid century. 3.1 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.86) => this Heating DB was insufficient 10.0 days/year (incl std dev 4.1 days/year). 1.4 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 8.7 days/year (incl std dev 3.6 days/year). Design heating changes 2.4 °C per century (linear regression R²=0.40) ~> 2.8 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:21 followed by maximum temperature at 15:23. Nighttime cooling rate 0.558 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:37 ~ Max at 15:48 Nighttime cooling rate 0.936 °/hr from 19:54 to 06:48 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 01:28 ~ Max at 15:48 Nighttime cooling rate 0.695 °/hr from 19:44 to 06:48 (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 | | 36.9 DDB / 18.3 CWB | 29.2 CDB / 20.3 DWB | 3.1 DB |16.1 DB| 33.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 1.72 % | 3.57 % | 0.32 % | 0.96 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 1.85 % | 3.72 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.54 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=175) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7237| 37.4| 17.5| 19.8| 15:48| 04:37| |+/- 1135|+/- 0.8|+/- 3.6|+/- 3.7|+/-01:00|+/-03:50| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=253) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6529| 20.5| 14.5| 6.1| 15:48| 01:28| |+/- 1513|+/- 0.9|+/- 2.6|+/- 2.9|+/-02:06|+/-07:25| +/- 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 | | 37.0 / 20.7 | 38.5 / 21.2 || 1.5 | 4.6 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 36.1 DDB / 18.0 CWB | 29.1 CDB / 20.1 DWB | 2.0 DB | 0.4 % | 33.7 DDB / 17.3 CWB | 28.1 CDB / 19.0 DWB | 3.2 DB | 1.0 % | 31.5 DDB / 16.7 CWB | 27.1 CDB / 18.2 DWB | 4.2 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 895 | 1560 | 172 | 81 | mean annual degrees days |+/- 99 |+/- 121 |+/- 32 |+/- 20 | +/- 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| | 4121 | 1942 | 21 | 2 | mean annual degrees hours |+/- 772 |+/- 478 |+/- 35 |+/- 6 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.8| 20.7| 19.1| 16.1| 13.1| 10.7| 9.8| 10.1| 11.3| 13.5| 16.7| 19.4| Average Temperature (DB) | 0.9| 1.2| 1.2| 1.2| 1.0| 0.8| 0.6| 0.8| 0.9| 1.2| 1.4| 1.4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 377| 336| 558| 1027| 1990| 3066| 3726| 3544| 2860| 2176| 1203| 618| HD-Hr base 15 °C | 177| 190| 276| 374| 463| 497| 427| 505| 488| 465| 428| 261| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1009| 890| 1327| 2143| 3659| 5017| 5814| 5591| 4663| 3671| 2261| 1407| HD-Hr base 18 °C | 247| 289| 409| 516| 582| 541| 450| 559| 584| 599| 564| 393| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1143| 958| 604| 140| 10| 0| 0| 0| 4| 85| 375| 802| CD-Hr base 24 °C | 278| 337| 247| 102| 20| 0| 0| 0| 9| 63| 203| 313| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 592| 482| 265| 37| 1| 0| 0| 0| 0| 24| 163| 377| CD-Hr base 27 °C | 189| 224| 142| 42| 5| 0| 0| 0| 1| 24| 109| 185| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6| 6| 3| 1| 1| 0| 0| 0| 0| 0| 2| 2| NECD-Hr base 21 °C | 16| 15| 8| 5| 7| 0| 0| 0| 1| 3| 9| 8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| 1| NECD-Hr base 24 °C | 0| 1| 2| 1| 1| 0| 0| 0| 0| 0| 4| 3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.8| 14.2| 13.3| 11.8| 9.9| 8.4| 7.7| 7.8| 8.5| 9.5| 11.1| 12.8| Average Wet Bulb Temp (WB) | 0.9| 1.0| 0.9| 0.8| 1.0| 0.8| 0.6| 0.7| 0.9| 0.8| 0.9| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.38% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 39.5| 38.6| 35.7| 30.5| 24.9| 19.8| 18.5| 19.9| 24.1| 30.0| 35.0| 37.6| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.0| 36.9| 33.8| 28.8| 23.2| 18.6| 17.3| 18.2| 22.0| 27.3| 32.5| 35.1| Design maximum DB | 20.9| 21.3| 19.9| 17.2| 14.5| 11.8| 10.9| 11.2| 12.0| 14.3| 17.0| 19.9| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7.1| 7.6| 5.9| 4.4| 3.2| 2.0| 1.2| 1.6| 1.4| 1.2| 2.7| 5.8| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.96% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.8| 21.0| 20.1| 18.6| 16.4| 14.5| 13.6| 13.8| 15.2| 17.0| 18.3| 19.8| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.7| 20.4| 19.0| 17.3| 15.4| 13.8| 12.7| 13.0| 14.3| 15.6| 16.9| 19.1| Design maximum WB | 16.5| 17.1| 16.1| 14.6| 13.2| 10.8| 9.8| 10.1| 10.6| 11.9| 13.6| 15.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5.6| 6.2| 5.1| 3.6| 2.6| 1.5| 0.7| 1.0| 0.9| 0.8| 2.0| 4.8| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|