Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(51) station Forrest 45 years (1967-2011)| | BoM 11052 (WMO 95646) -30.84° latitude 128.11° longitude 160.0 m alt| | | |It is now 04-Jul-2013 04:06:15 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/51/FO_51_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/51/FO_51_DB.txt (Dry Design Day)| | B: CZ0504_NatHERS_1967-2011_w.txt => NEW33/51/FO_51_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/51/FO_51_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 41.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.30) => this Design DB was exceeded 10.2 days/year (incl std dev 3.2 days/year). 41.5 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.4 days/year (incl std dev 3.0 days/year). Design drybulb changes 1.2 °C per century (linear regression R² 0.13) ~> 42.2 °C mid century. 21.4 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.05) => this Design WB was exceeded 10.1 days/year (incl std dev 4.6 days/year). 21.4 ° 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 4.4 days/year). Design wetbulb changes 2.9 °C per century (linear regression R²=0.42) ~> 23.2 °C mid century. 3.4 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.95) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.8 days/year). 1.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.9 days/year (incl std dev 4.9 days/year). Design heating changes 2.8 °C per century (linear regression R²=0.44) ~> 2.6 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:53 followed by maximum temperature at 15:01. Nighttime cooling rate 0.725 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:44 ~ Max at 14:54 Nighttime cooling rate 1.129 °/hr from 19:41 to 06:35 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:02 ~ Max at 15:36 Nighttime cooling rate 0.641 °/hr from 19:34 to 06:32 (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 | | 41.4 DDB / 18.5 CWB | 30.0 CDB / 21.4 DWB | 3.4 DB |18.2 DB| 38.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.28 % | 3.09 % | 6.98 % | 0.33 % | 1.20 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 3.19 % | 7.18 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.60 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=224) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7878| 41.7| 19.6| 22.1| 14:54| 04:44| |+/- 1085|+/- 0.8|+/- 3.3|+/- 3.3|+/-01:06|+/-01:51| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=221) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6403| 21.8| 15.9| 5.9| 15:36| 00:02| |+/- 1898|+/- 0.9|+/- 2.4|+/- 2.4|+/-03:36|+/-06:52| +/- 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 | | 41.6 / 21.8 | 43.0 / 22.2 || 1.4 | 6.9 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.7 DDB / 18.4 CWB | 30.1 CDB / 21.2 DWB | 1.9 DB | 0.4 % | 38.3 DDB / 17.9 CWB | 30.1 CDB / 20.1 DWB | 3.1 DB | 1.0 % | 35.9 DDB / 17.3 CWB | 29.1 CDB / 19.2 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| | 617 | 1111 | 379 | 212 | mean annual degrees days |+/- 61 |+/- 82 |+/- 53 |+/- 38 | +/- 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| | 9104 | 5091 | 45 | 3 | mean annual degrees hours |+/- 1273 |+/- 908 |+/- 62 |+/- 9 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.5| 23.2| 21.0| 18.3| 14.8| 11.8| 11.1| 12.4| 15.2| 17.8| 20.4| 22.1| Average Temperature (DB) | 1.3| 1.6| 1.1| 1.2| 1.4| 0.8| 0.8| 1.2| 1.3| 1.2| 1.3| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 93| 83| 252| 661| 1572| 2727| 3253| 2731| 1736| 1017| 471| 205| HD-Hr base 15 °C | 63| 58| 108| 240| 446| 412| 421| 450| 382| 213| 142| 79| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 444| 387| 795| 1497| 2900| 4404| 5035| 4348| 2967| 2015| 1172| 709| HD-Hr base 18 °C | 178| 178| 211| 371| 632| 474| 515| 591| 538| 328| 243| 186| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2027| 1656| 1101| 501| 109| 6| 7| 70| 277| 661| 1122| 1566| CD-Hr base 24 °C | 514| 622| 418| 262| 111| 15| 10| 76| 158| 281| 411| 476| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1234| 998| 601| 223| 29| 1| 0| 18| 115| 338| 627| 905| CD-Hr base 27 °C | 395| 460| 292| 143| 45| 3| 1| 24| 85| 176| 291| 349| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15| 20| 5| 0| 0| 0| 0| 0| 0| 0| 0| 5| NECD-Hr base 21 °C | 37| 39| 10| 1| 0| 0| 0| 0| 0| 0| 2| 9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 9| 4| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.1| 15.6| 14.4| 12.4| 10.0| 7.9| 7.0| 7.5| 9.1| 10.7| 12.6| 14.1| Average Wet Bulb Temp (WB) | 1.0| 1.0| 0.9| 1.0| 1.0| 1.1| 1.0| 0.8| 0.8| 0.7| 0.7| 0.7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.38% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 43.8| 42.3| 39.9| 35.2| 29.6| 24.4| 24.7| 28.8| 33.9| 38.3| 40.6| 41.9| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.5| 41.0| 38.0| 33.8| 28.3| 23.3| 23.5| 27.2| 31.8| 35.4| 37.9| 39.6| Design maximum DB | 23.3| 23.3| 20.7| 18.1| 15.6| 12.5| 11.6| 12.4| 14.9| 17.8| 20.0| 22.1| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10.9| 11.1| 9.1| 6.5| 3.5| 0.8| 0.2| 1.0| 2.4| 4.5| 6.7| 9.1| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.09% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.9| 22.1| 20.9| 19.2| 17.1| 14.9| 14.2| 14.9| 16.6| 18.1| 19.8| 21.3| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.9| 21.5| 19.9| 18.1| 16.4| 14.4| 13.2| 13.8| 15.7| 17.1| 18.3| 19.9| Design maximum WB | 18.2| 18.8| 17.8| 16.1| 14.0| 11.6| 10.6| 10.6| 12.2| 13.3| 15.4| 17.2| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.4| 8.8| 7.2| 4.5| 1.9| -0.6| -1.3| -0.6| 0.9| 2.8| 4.8| 6.9| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|