Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(33) station Broome 45 years (1967-2011)| | BoM 3003 (WMO 94203) -17.95° latitude 122.24° longitude 9.0 m alt| | | |It is now 04-Jul-2013 02:13:11 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/33/BM_33_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/33/BM_33_DB.txt (Dry Design Day)| | B: CZ0108_NatHERS_1967-2011_w.txt => NEW33/33/BM_33_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/33/BM_33_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 38.6 °C Design DB = mean of 10th highest 3PM each year + (std dev * 2.11) => this Design DB was exceeded 9.9 days/year (incl std dev 3.9 days/year). 38.6 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 10.4 days/year (incl std dev 4.2 days/year). Design drybulb changes -0.3 °C per century (linear regression R² -0.04) ~> 38.4 °C mid century. 28.1 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.27) => this Design WB was exceeded 9.6 days/year (incl std dev 4.4 days/year). 28.2 ° 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 0.5 °C per century (linear regression R²=0.17) ~> 28.5 °C mid century. 12.3 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.98) => this Heating DB was insufficient 10.2 days/year (incl std dev 5.1 days/year). 9.2 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.5 days/year (incl std dev 5.1 days/year). Design heating changes 0.2 °C per century (linear regression R²=0.01) ~> 9.3 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:60 followed by maximum temperature at 14:21. Nighttime cooling rate 0.392 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:19 ~ Max at 14:42 Nighttime cooling rate 0.503 °/hr from 19:32 to 07:12 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:19 ~ Max at 16:30 Nighttime cooling rate 0.159 °/hr from Inf:NaN to 06:58 (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 | | 38.6 DDB / 19.8 CWB | 31.2 CDB / 28.1 DWB | 12.3 DB |10.3 DB| 26.3 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.17 % | 61.72 % | 14.00 % | 0.23 % | 1.14 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 61.83 % | 14.10 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.40 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=197) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7159| 38.9| 24.0| 14.9| 14:42| 05:19| |+/- 827|+/- 0.8|+/- 2.9|+/- 3.0|+/-01:00|+/-01:34| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=459) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6985| 28.0| 24.4| 3.6| 16:30| -3:19| |+/- 788|+/- 0.5|+/- 1.7|+/- 1.7|+/-04:30|+/-08:26| +/- 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 | | 38.1 / 28.1 | 39.3 / 28.2 || 9.8 | 16.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 37.3 DDB / 20.3 CWB | 31.1 CDB / 27.9 DWB | 10.5 DB | 0.4 % | 36.0 DDB / 20.8 CWB | 30.8 CDB / 27.5 DWB | 12.1 DB | 1.0 % | 34.7 DDB / 21.8 CWB | 30.6 CDB / 27.1 DWB | 13.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 27 | 85 | 1247 | 579 | mean annual degrees days |+/- 16 |+/- 37 |+/- 112 |+/- 80 | +/- 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| | 29935 | 13892 | 15622 | 4131 | mean annual degrees hours |+/- 2677 |+/- 1913 |+/- 1694 |+/- 929 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 29.4| 29.0| 29.2| 27.9| 24.4| 21.6| 20.9| 22.2| 24.8| 27.2| 28.9| 29.6| Average Temperature (DB) | 0.7| 0.8| 0.8| 1.0| 1.1| 1.2| 1.1| 0.8| 0.7| 0.8| 0.7| 0.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 32| 172| 273| 145| 16| 0| 0| 0| HD-Hr base 15 °C | 0| 0| 0| 2| 52| 144| 177| 115| 21| 1| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 13| 168| 528| 751| 478| 92| 4| 0| 0| HD-Hr base 18 °C | 0| 0| 0| 26| 165| 313| 355| 252| 70| 8| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3911| 3311| 3773| 3093| 1705| 832| 749| 1034| 1551| 2545| 3430| 4000| CD-Hr base 24 °C | 517| 530| 534| 527| 397| 235| 219| 218| 299| 513| 457| 435| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1910| 1539| 1888| 1600| 770| 277| 239| 393| 653| 1100| 1561| 1962| CD-Hr base 27 °C | 441| 458| 441| 372| 255| 130| 112| 137| 204| 348| 364| 408| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3002| 2761| 2694| 1251| 255| 46| 17| 28| 218| 975| 1757| 2617| NECD-Hr base 21 °C | 292| 325| 450| 478| 212| 61| 42| 41| 152| 464| 482| 434| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 973| 909| 859| 256| 15| 1| 0| 0| 4| 88| 301| 725| NECD-Hr base 24 °C | 242| 282| 320| 164| 23| 3| 1| 0| 7| 98| 213| 278| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.2| 25.2| 24.7| 21.6| 17.5| 14.7| 14.0| 15.6| 18.7| 21.6| 23.4| 24.6| Average Wet Bulb Temp (WB) | 0.4| 0.5| 0.7| 1.3| 1.6| 1.7| 1.6| 1.4| 1.1| 1.0| 0.8| 0.7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.37% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.5| 35.8| 37.3| 37.3| 35.5| 32.6| 32.6| 34.6| 37.3| 39.0| 40.0| 38.0| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.5| 35.0| 37.1| 37.2| 35.6| 32.5| 32.4| 34.1| 36.5| 38.6| 38.7| 36.5| Design maximum DB | 29.7| 29.5| 29.2| 28.3| 24.8| 21.9| 20.6| 21.5| 24.3| 26.9| 28.4| 29.4| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.0| 22.5| 21.9| 17.2| 12.8| 9.5| 8.6| 9.7| 13.2| 18.0| 21.7| 23.1| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.15% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28.1| 28.2| 28.3| 27.2| 24.9| 22.3| 21.6| 22.5| 24.4| 25.7| 26.8| 27.7| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.7| 27.9| 28.2| 26.7| 24.7| 22.6| 21.5| 22.0| 23.9| 25.6| 26.5| 27.4| Design maximum WB | 26.8| 27.1| 27.1| 25.7| 22.8| 19.9| 18.8| 19.9| 22.3| 24.5| 25.6| 26.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.2| 19.9| 17.8| 12.5| 8.6| 5.8| 4.8| 5.9| 8.5| 13.0| 15.8| 18.6| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|