Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(80) station Coldstream 17 years (1995-2011)| | BoM 86383 (WMO 94864) -37.72° latitude 145.41° longitude 83.9 m alt| | | |It is now 04-Jul-2013 06:45:52 -> computational time was 3 minutes| | OUTPUTS | | INPUTS => NEW33/80/CS_80_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/80/CS_80_DB.txt (Dry Design Day)| | B: CZ0608_NatHERS_1995-2011_w.txt => NEW33/80/CS_80_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/80/CS_80_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.33) => this Design DB was exceeded 10.0 days/year (incl std dev 4.2 days/year). 35.9 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.9 days/year (incl std dev 3.7 days/year). Design drybulb changes 10.7 °C per century (linear regression R² 0.29) ~> 40.9 °C mid century. 22.6 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.22) => this Design WB was exceeded 10.1 days/year (incl std dev 5.3 days/year). 22.8 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.9 days/year (incl std dev 5.4 days/year). Design wetbulb changes -15.6 °C per century (linear regression R²=-0.56) ~> 15.5 °C mid century. -1.1 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.92) => this Heating DB was insufficient 10.5 days/year (incl std dev 3.5 days/year). -1.6 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.7 days/year (incl std dev 3.8 days/year). Design heating changes 3.8 °C per century (linear regression R²=0.27) ~> 0.1 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:29 followed by maximum temperature at 15:39. Nighttime cooling rate 0.452 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:37 ~ Max at 16:00 Nighttime cooling rate 0.992 °/hr from 19:48 to 06:53 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 02:53 ~ Max at 15:36 Nighttime cooling rate 0.736 °/hr from 19:59 to 06:54 (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 | | 35.5 DDB / 18.8 CWB | 27.5 CDB / 22.6 DWB | -1.1 DB |14.6 DB| 36.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.28 % | 2.78 % | 3.68 % | 0.23 % | 0.42 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.90 % | 3.80 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.50 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=60) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7605| 36.0| 12.7| 23.3| 16:00| 04:37| |+/- 1427|+/- 1.0|+/- 3.9|+/- 4.2|+/-01:12|+/-03:50| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=35) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6393| 23.0| 12.8| 10.1| 15:36| 02:53| |+/- 2190|+/- 1.1|+/- 5.0|+/- 5.5|+/-03:42|+/-06:32| +/- 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 | | 35.8 / 22.5 | 37.5 / 23.8 || -1.6 | -0.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 34.7 DDB / 18.8 CWB | 27.4 CDB / 21.7 DWB | -1.1 DB | 0.4 % | 32.3 DDB / 18.5 CWB | 27.3 CDB / 20.4 DWB | 0.0 DB | 1.0 % | 30.0 DDB / 18.0 CWB | 26.5 CDB / 19.3 DWB | 1.1 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1215 | 1960 | 117 | 54 | mean annual degrees days |+/- 91 |+/- 117 |+/- 36 |+/- 22 | +/- 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| | 2804 | 1297 | 102 | 25 | mean annual degrees hours |+/- 864 |+/- 532 |+/- 107 |+/- 39 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.3| 19.2| 16.7| 13.1| 10.4| 8.8| 8.3| 9.3| 11.2| 12.9| 15.7| 17.0| Average Temperature (DB) | 1.2| 1.7| 1.0| 1.3| 0.9| 0.9| 0.6| 0.7| 0.8| 0.9| 1.4| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 624| 554| 1157| 2294| 3453| 4332| 4756| 4136| 3025| 2383| 1353| 1105| HD-Hr base 15 °C | 247| 209| 282| 518| 486| 629| 423| 448| 405| 423| 430| 294| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1393| 1269| 2268| 3814| 5374| 6351| 6882| 6172| 4782| 3985| 2574| 2187| HD-Hr base 18 °C | 390| 408| 407| 663| 579| 647| 430| 498| 495| 521| 609| 467| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 844| 757| 408| 54| 1| 0| 0| 0| 5| 45| 230| 461| CD-Hr base 24 °C | 341| 376| 211| 60| 2| 0| 0| 0| 6| 49| 172| 232| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 432| 382| 172| 10| 0| 0| 0| 0| 0| 9| 81| 211| CD-Hr base 27 °C | 232| 241| 133| 18| 0| 0| 0| 0| 0| 16| 84| 130| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32| 28| 12| 0| 0| 0| 0| 0| 1| 3| 6| 19| NECD-Hr base 21 °C | 38| 31| 26| 1| 0| 0| 0| 0| 5| 13| 14| 49| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5| 8| 4| 0| 0| 0| 0| 0| 0| 0| 1| 7| NECD-Hr base 24 °C | 14| 14| 8| 0| 0| 0| 0| 0| 0| 1| 4| 21| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.4| 14.5| 12.6| 10.3| 8.5| 7.1| 6.6| 7.2| 8.4| 9.8| 12.0| 12.7| Average Wet Bulb Temp (WB) | 1.1| 1.1| 0.9| 1.0| 0.7| 0.8| 0.6| 0.6| 0.9| 0.9| 1.2| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.50% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.8| 36.9| 34.0| 27.7| 21.9| 18.2| 16.7| 19.5| 23.8| 27.9| 31.6| 35.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.6| 35.3| 32.7| 26.5| 21.1| 17.2| 15.6| 18.8| 21.8| 25.6| 30.4| 33.6| Design maximum DB | 21.0| 20.2| 17.7| 15.3| 13.9| 12.4| 11.5| 12.9| 16.0| 16.8| 17.1| 18.2| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3.7| 4.8| 2.5| 0.1| -1.3| -2.7| -2.6| -1.6| -0.8| 0.2| 2.3| 3.1| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.47% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.9| 25.0| 22.0| 18.4| 15.4| 13.5| 12.1| 13.9| 16.6| 18.5| 21.5| 22.2| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.7| 22.3| 21.3| 18.1| 15.1| 13.3| 12.2| 13.9| 15.9| 18.2| 20.5| 21.5| Design maximum WB | 19.1| 19.0| 16.9| 14.5| 12.9| 11.6| 9.8| 10.7| 13.4| 14.4| 16.0| 16.9| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3.3| 4.4| 2.1| -0.1| -1.5| -2.9| -2.8| -1.8| -0.9| -0.0| 2.0| 2.7| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|