Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB( 2) station Pt Hedland 45 years (1967-2011)| | BoM 4032 (WMO 94312) -20.37° latitude 118.63° longitude 8.4 m alt| | | |It is now 03-Jul-2013 22:46:23 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/2/HE_2_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/2/HE_2_DB.txt (Dry Design Day)| | B: CZ0110_NatHERS_1967-2011_w.txt => NEW33/2/HE_2_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/2/HE_2_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 42.0 °C Design DB = mean of 10th highest 3PM each year + (std dev * 2.20) => this Design DB was exceeded 9.6 days/year (incl std dev 3.7 days/year). 42.1 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.6 days/year (incl std dev 3.7 days/year). Design drybulb changes 0.2 °C per century (linear regression R² 0.03) ~> 42.2 °C mid century. 27.9 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.86) => this Design WB was exceeded 10.9 days/year (incl std dev 4.7 days/year). 27.9 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.3 days/year (incl std dev 4.0 days/year). Design wetbulb changes 0.7 °C per century (linear regression R²=0.23) ~> 28.4 °C mid century. 11.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.10) => this Heating DB was insufficient 10.1 days/year (incl std dev 5.9 days/year). 9.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.1 days/year (incl std dev 4.1 days/year). Design heating changes 2.2 °C per century (linear regression R²=0.28) ~> 10.3 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:33 followed by maximum temperature at 14:15. Nighttime cooling rate 0.514 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:30 ~ Max at 14:12 Nighttime cooling rate 0.652 °/hr from 19:48 to 07:38 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -4:07 ~ Max at 15:42 Nighttime cooling rate 0.366 °/hr from Inf:NaN to 07:20 (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 | | 42.0 DDB / 20.2 CWB | 32.0 CDB / 27.9 DWB | 11.0 DB |14.9 DB| 31.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.17 % | 43.26 % | 15.90 % | 0.19 % | 0.85 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 43.34 % | 15.97 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.36 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=169) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7893| 42.5| 24.8| 17.7| 14:12| 05:30| |+/- 713|+/- 0.8|+/- 2.4|+/- 2.6|+/-00:54|+/-01:26| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=302) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 7424| 27.9| 23.1| 4.8| 15:42| -4:07| |+/- 893|+/- 0.6|+/- 2.3|+/- 2.4|+/-03:54|+/-09:01| +/- 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 | | 41.5 / 27.8 | 42.8 / 28.0 || 9.5 | 15.2 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.8 DDB / 20.5 CWB | 31.9 CDB / 27.6 DWB | 10.0 DB | 0.4 % | 39.3 DDB / 20.8 CWB | 31.4 CDB / 27.1 DWB | 11.3 DB | 1.0 % | 37.9 DDB / 21.2 CWB | 30.9 CDB / 26.6 DWB | 12.7 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 40 | 131 | 1276 | 695 | mean annual degrees days |+/- 16 |+/- 34 |+/- 109 |+/- 84 | +/- 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| | 30623 | 16677 | 9638 | 2275 | mean annual degrees hours |+/- 2608 |+/- 2022 |+/- 1348 |+/- 649 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 30.3| 30.1| 29.9| 27.6| 23.4| 20.2| 19.3| 20.7| 23.3| 26.3| 28.3| 29.7| Average Temperature (DB) | 0.7| 0.8| 0.8| 0.9| 1.0| 1.1| 1.0| 0.7| 0.9| 1.3| 1.2| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 37| 234| 410| 227| 56| 3| 0| 0| HD-Hr base 15 °C | 0| 2| 0| 1| 36| 168| 203| 121| 46| 5| 1| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 14| 210| 716| 1091| 755| 308| 49| 2| 0| HD-Hr base 18 °C | 0| 2| 0| 22| 125| 341| 369| 237| 134| 38| 7| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4545| 4025| 4360| 3024| 1325| 476| 417| 762| 1513| 2630| 3340| 4206| CD-Hr base 24 °C | 488| 540| 525| 477| 390| 178| 164| 225| 366| 679| 696| 585| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2583| 2248| 2518| 1683| 571| 110| 87| 245| 736| 1504| 1964| 2429| CD-Hr base 27 °C | 426| 484| 440| 376| 257| 80| 60| 119| 271| 521| 548| 469| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2439| 2351| 1886| 629| 76| 25| 6| 5| 7| 166| 517| 1531| NECD-Hr base 21 °C | 494| 441| 518| 246| 76| 39| 13| 16| 12| 147| 267| 457| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 671| 706| 499| 79| 1| 0| 0| 0| 0| 6| 45| 269| NECD-Hr base 24 °C | 278| 266| 263| 56| 4| 2| 0| 0| 2| 12| 56| 165| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.3| 24.5| 23.2| 19.9| 15.9| 13.4| 12.2| 13.4| 15.5| 18.3| 20.4| 22.8| Average Wet Bulb Temp (WB) | 0.8| 0.8| 1.0| 1.2| 1.5| 1.8| 1.4| 1.2| 1.1| 1.0| 0.8| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.70% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 43.0| 41.9| 41.0| 38.7| 35.0| 31.1| 30.9| 33.0| 37.3| 40.3| 42.5| 42.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 41.5| 41.2| 40.6| 39.0| 35.2| 31.2| 30.7| 32.7| 37.0| 40.8| 42.1| 41.7| Design maximum DB | 29.2| 29.3| 28.7| 26.7| 23.7| 21.4| 19.8| 19.7| 21.4| 25.1| 27.2| 28.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.8| 22.1| 21.1| 17.1| 12.3| 9.3| 7.8| 9.5| 11.5| 14.7| 17.9| 20.7| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.83% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28.0| 28.4| 28.1| 26.5| 23.4| 21.8| 20.5| 20.9| 21.9| 24.4| 25.9| 27.2| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.6| 28.0| 27.6| 26.0| 23.0| 21.9| 20.4| 20.3| 21.3| 24.1| 25.6| 26.8| Design maximum WB | 26.6| 26.7| 26.3| 24.5| 21.3| 20.4| 17.9| 17.8| 18.6| 21.7| 23.9| 25.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.3| 17.2| 14.6| 11.0| 6.8| 5.0| 3.4| 4.3| 6.1| 8.8| 11.8| 14.9| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|