Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(53) station Ceduna 45 years (1967-2011)| | BoM 18012 (WMO 94653) -32.13° latitude 133.70° longitude 15.7 m alt| | | |It is now 04-Jul-2013 04:15:35 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/53/CE_53_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/53/CE_53_DB.txt (Dry Design Day)| | B: CZ0507_NatHERS_1967-2011_w.txt => NEW33/53/CE_53_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/53/CE_53_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 40.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.89) => this Design DB was exceeded 10.1 days/year (incl std dev 3.7 days/year). 40.4 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 10.1 days/year (incl std dev 3.7 days/year). Design drybulb changes 1.5 °C per century (linear regression R² 0.15) ~> 41.3 °C mid century. 21.2 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.90) => this Design WB was exceeded 9.8 days/year (incl std dev 4.4 days/year). 21.3 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.8 days/year (incl std dev 4.4 days/year). Design wetbulb changes 0.4 °C per century (linear regression R²=0.06) ~> 21.5 °C mid century. 1.8 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.98) => this Heating DB was insufficient 9.8 days/year (incl std dev 4.9 days/year). 0.8 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.8 days/year (incl std dev 4.7 days/year). Design heating changes -0.2 °C per century (linear regression R²=-0.03) ~> 0.7 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:19 followed by maximum temperature at 14:49. Nighttime cooling rate 0.475 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:25 ~ Max at 15:18 Nighttime cooling rate 0.679 °/hr from 19:54 to 06:46 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 01:55 ~ Max at 15:30 Nighttime cooling rate 0.526 °/hr from 19:59 to 06:51 (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 | | 40.4 DDB / 18.6 CWB | 28.9 CDB / 21.2 DWB | 1.8 DB |15.5 DB| 38.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 2.86 % | 5.21 % | 0.35 % | 0.34 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.96 % | 5.41 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.60 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=151) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7656| 41.1| 19.4| 21.7| 15:18| 03:25| |+/- 1117|+/- 0.9|+/- 4.1|+/- 4.1|+/-01:18|+/-04:52| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=226) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6601| 21.6| 15.6| 6.0| 15:30| 01:55| |+/- 1907|+/- 1.0|+/- 2.7|+/- 2.5|+/-03:48|+/-06:57| +/- 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 | | 40.6 / 21.6 | 42.2 / 22.1 || 1.3 | 4.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 39.5 DDB / 18.3 CWB | 28.9 CDB / 21.1 DWB | 2.0 DB | 0.4 % | 36.7 DDB / 17.5 CWB | 28.2 CDB / 20.0 DWB | 3.2 DB | 1.0 % | 33.8 DDB / 16.9 CWB | 27.1 CDB / 19.2 DWB | 4.5 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 591 | 1119 | 229 | 128 | mean annual degrees days |+/- 44 |+/- 63 |+/- 37 |+/- 25 | +/- 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| | 5486 | 3063 | 40 | 2 | mean annual degrees hours |+/- 884 |+/- 606 |+/- 50 |+/- 5 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.8| 21.7| 19.7| 17.4| 14.4| 11.9| 11.4| 12.2| 14.5| 16.7| 19.1| 20.6| Average Temperature (DB) | 1.4| 1.4| 1.0| 1.0| 0.9| 1.0| 0.9| 0.9| 1.0| 0.9| 1.1| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 129| 113| 332| 753| 1566| 2532| 2909| 2561| 1636| 998| 441| 217| HD-Hr base 15 °C | 79| 66| 140| 255| 325| 533| 504| 340| 282| 208| 116| 72| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 459| 411| 892| 1641| 2977| 4268| 4768| 4314| 3068| 2160| 1193| 709| HD-Hr base 18 °C | 202| 169| 256| 366| 439| 604| 567| 461| 431| 322| 242| 166| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1141| 993| 675| 320| 64| 3| 3| 34| 169| 443| 717| 923| CD-Hr base 24 °C | 475| 453| 342| 178| 69| 8| 12| 50| 125| 201| 291| 384| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 697| 585| 373| 138| 17| 0| 1| 7| 68| 228| 407| 543| CD-Hr base 27 °C | 327| 310| 229| 96| 29| 0| 5| 15| 65| 127| 201| 264| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15| 14| 4| 0| 0| 0| 0| 0| 0| 0| 0| 6| NECD-Hr base 21 °C | 25| 33| 10| 1| 0| 0| 0| 0| 0| 1| 2| 14| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 24 °C | 1| 2| 0| 0| 0| 0| 0| 0| 0| 1| 1| 5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.3| 15.5| 14.2| 12.3| 10.4| 8.7| 8.1| 8.4| 9.7| 10.9| 12.7| 14.1| Average Wet Bulb Temp (WB) | 1.1| 0.9| 1.1| 0.9| 0.7| 0.9| 0.8| 0.6| 0.7| 0.6| 0.7| 0.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.02% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 43.2| 41.5| 39.0| 34.4| 28.7| 23.6| 23.5| 26.7| 32.7| 36.8| 39.9| 41.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.5| 40.0| 36.9| 32.8| 27.7| 22.5| 22.4| 25.9| 30.6| 34.3| 37.4| 39.0| Design maximum DB | 25.0| 24.2| 22.5| 19.9| 17.0| 14.1| 13.4| 14.4| 17.0| 20.7| 22.5| 23.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.3| 9.4| 6.7| 4.9| 2.5| 0.8| 0.6| 0.5| 1.6| 2.8| 5.3| 7.3| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.59% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.0| 22.0| 20.7| 18.9| 17.1| 15.4| 14.4| 14.6| 16.2| 18.1| 19.9| 21.2| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.3| 20.9| 19.8| 17.7| 16.0| 14.3| 13.5| 13.7| 15.3| 16.7| 18.2| 19.6| Design maximum WB | 18.7| 18.9| 17.6| 15.9| 13.6| 11.6| 10.7| 11.1| 12.5| 14.1| 16.0| 17.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7.5| 7.6| 5.7| 4.0| 1.8| 0.2| 0.1| 0.1| 1.1| 2.2| 4.3| 5.8| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|