Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(31) station Willis Island 45 years (1967-2011)| | BoM 200283 (WMO 94299) -16.29° latitude 149.97° longitude 8.1 m alt| | | |It is now 04-Jul-2013 01:59:47 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/31/WS_31_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/31/WS_31_DB.txt (Dry Design Day)| | B: CZ0105_NatHERS_1967-2011_w.txt => NEW33/31/WS_31_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/31/WS_31_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 31.9 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.67) => this Design DB was exceeded 9.7 days/year (incl std dev 5.1 days/year). 31.9 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.7 days/year (incl std dev 5.1 days/year). Design drybulb changes 0.4 °C per century (linear regression R² 0.10) ~> 32.2 °C mid century. 27.4 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.99) => this Design WB was exceeded 9.6 days/year (incl std dev 5.1 days/year). 27.4 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 11.9 days/year (incl std dev 5.8 days/year). Design wetbulb changes 0.6 °C per century (linear regression R²=0.23) ~> 27.8 °C mid century. 21.8 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.91) => this Heating DB was insufficient 8.9 days/year (incl std dev 3.9 days/year). 21.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.4 days/year (incl std dev 4.8 days/year). Design heating changes 1.1 °C per century (linear regression R²=0.29) ~> 21.7 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:34 followed by maximum temperature at 14:04. Nighttime cooling rate 0.059 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:07 ~ Max at 14:12 Nighttime cooling rate 0.090 °/hr from 19:32 to 07:3 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:23 ~ Max at 14:24 Nighttime cooling rate 0.058 °/hr from 19:28 to 06:55 (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 | | 31.9 DDB / 25.9 CWB | 29.5 CDB / 27.4 DWB | 21.8 DB | 3.9 DB| 10.1 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.13 % | 5.22 % | 5.37 % | 0.16 % | 1.08 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 5.27 % | 5.40 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.28 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=650) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7045| 31.7| 27.2| 4.5| 14:12| 04:07| |+/- 1133|+/- 0.5|+/- 0.7|+/- 0.7|+/-01:00|+/-03:52| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=751) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6097| 27.2| 25.0| 2.2| 14:24| 00:23| |+/- 1508|+/- 0.5|+/- 0.8|+/- 0.8|+/-03:00|+/-06:47| +/- 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 | | 31.6 / 27.3 | 32.0 / 27.6 || 20.9 | 21.7 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 31.4 DDB / 25.7 CWB | 29.2 CDB / 27.1 DWB | 21.1 DB | 0.4 % | 30.9 DDB / 25.4 CWB | 29.0 CDB / 26.8 DWB | 21.7 DB | 1.0 % | 30.4 DDB / 25.2 CWB | 28.7 CDB / 26.5 DWB | 22.1 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 0 | 0 | 790 | 166 | mean annual degrees days |+/- 0 |+/- 0 |+/- 87 |+/- 33 | +/- 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| | 18957 | 3996 | 15957 | 3053 | mean annual degrees hours |+/- 2079 |+/- 802 |+/- 2696 |+/- 932 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28.0| 27.9| 27.5| 26.7| 25.6| 24.4| 23.8| 23.8| 24.6| 25.7| 26.9| 27.8| Average Temperature (DB) | 0.5| 0.6| 0.5| 0.5| 0.5| 0.5| 0.5| 0.5| 0.5| 0.6| 0.5| 0.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| HD-Hr base 15 °C | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| HD-Hr base 18 °C | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2905| 2579| 2537| 1886| 1203| 529| 292| 328| 621| 1309| 2036| 2731| CD-Hr base 24 °C | 363| 367| 326| 337| 325| 243| 192| 167| 252| 388| 346| 429| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 888| 750| 579| 244| 61| 9| 1| 5| 29| 179| 447| 803| CD-Hr base 27 °C | 286| 291| 192| 138| 53| 15| 3| 10| 38| 120| 168| 304| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2632| 2608| 2525| 1696| 1001| 406| 187| 189| 309| 819| 1426| 2158| NECD-Hr base 21 °C | 473| 331| 362| 577| 529| 252| 172| 209| 299| 485| 464| 562| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 689| 749| 607| 258| 74| 13| 3| 2| 7| 52| 154| 444| NECD-Hr base 24 °C | 289| 243| 235| 258| 152| 30| 7| 7| 17| 66| 160| 275| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.7| 25.0| 24.5| 23.4| 22.0| 20.5| 19.6| 19.6| 20.3| 21.7| 23.0| 24.0| Average Wet Bulb Temp (WB) | 0.7| 0.5| 0.5| 0.9| 1.0| 0.8| 1.0| 0.9| 1.0| 1.0| 0.7| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.01% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 31.7| 31.6| 30.9| 29.6| 28.7| 27.6| 26.9| 27.2| 28.2| 29.6| 31.0| 31.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.0| 31.7| 30.9| 29.8| 28.6| 27.7| 27.0| 27.4| 28.5| 29.9| 31.0| 31.9| Design maximum DB | 28.1| 28.2| 27.9| 27.2| 26.4| 25.5| 24.7| 24.3| 24.8| 26.0| 27.0| 28.0| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.4| 24.5| 24.4| 23.5| 22.7| 21.2| 20.7| 20.8| 21.3| 22.7| 23.6| 24.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.60% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.4| 27.6| 27.3| 26.4| 25.5| 24.3| 23.5| 23.3| 23.8| 24.9| 26.0| 27.0| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.2| 27.5| 27.4| 26.9| 25.9| 24.6| 23.8| 23.9| 24.4| 25.5| 26.2| 27.1| Design maximum WB | 26.2| 26.3| 26.0| 25.7| 25.0| 23.8| 22.8| 22.9| 23.3| 24.5| 25.4| 26.0| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.9| 22.0| 21.1| 19.7| 18.0| 15.9| 15.1| 14.8| 15.9| 17.5| 19.2| 20.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|