Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(11) station Coffs Harbour 45 years (1967-2011)| | BoM 59040 (WMO 94791) -30.31° latitude 153.12° longitude 6.0 m alt| | | |It is now 03-Jul-2013 23:46:46 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/11/CH_11_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/11/CH_11_DB.txt (Dry Design Day)| | B: CZ0207_NatHERS_1967-2011_w.txt => NEW33/11/CH_11_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/11/CH_11_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 30.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 3.36) => this Design DB was exceeded 10.1 days/year (incl std dev 3.6 days/year). 30.6 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.2 days/year (incl std dev 3.3 days/year). Design drybulb changes 3.1 °C per century (linear regression R² 0.41) ~> 32.5 °C mid century. 24.0 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.93) => this Design WB was exceeded 9.9 days/year (incl std dev 4.2 days/year). 24.0 ° 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 4.2 days/year). Design wetbulb changes 0.2 °C per century (linear regression R²=0.06) ~> 24.1 °C mid century. 4.7 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.92) => this Heating DB was insufficient 10.0 days/year (incl std dev 4.4 days/year). 3.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 8.2 days/year (incl std dev 3.9 days/year). Design heating changes -0.2 °C per century (linear regression R²=-0.03) ~> 2.8 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:53 followed by maximum temperature at 14:36. Nighttime cooling rate 0.348 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:13 ~ Max at 14:18 Nighttime cooling rate 0.309 °/hr from 19:45 to 07:21 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:36 ~ Max at 15:18 Nighttime cooling rate 0.234 °/hr from 19:46 to 06:44 (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 | | 30.4 DDB / 20.9 CWB | 26.8 CDB / 24.0 DWB | 4.7 DB | 6.6 DB| 25.7 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.26 % | 7.53 % | 2.64 % | 0.23 % | 0.60 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 7.67 % | 2.69 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.46 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=98) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6903| 31.5| 20.3| 11.2| 14:18| 04:13| |+/- 1443|+/- 1.7|+/- 3.0|+/- 3.5|+/-02:24|+/-03:27| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=409) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6523| 24.0| 19.9| 4.1| 15:18| 00:36| |+/- 1707|+/- 0.6|+/- 1.8|+/- 1.7|+/-02:30|+/-07:57| +/- 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 | | 30.5 / 24.0 | 32.1 / 24.3 || 3.4 | 8.3 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 29.6 DDB / 21.2 CWB | 26.6 CDB / 23.7 DWB | 4.0 DB | 0.4 % | 28.0 DDB / 21.3 CWB | 26.1 CDB / 23.1 DWB | 5.5 DB | 1.0 % | 27.1 DDB / 21.0 CWB | 25.5 CDB / 22.5 DWB | 7.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 275 | 606 | 85 | 13 | mean annual degrees days |+/- 47 |+/- 66 |+/- 21 |+/- 7 | +/- 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| | 2033 | 306 | 662 | 11 | mean annual degrees hours |+/- 496 |+/- 157 |+/- 280 |+/- 14 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.2| 23.0| 21.7| 19.3| 16.3| 14.0| 13.1| 14.2| 16.7| 18.7| 20.4| 22.1| Average Temperature (DB) | 0.7| 0.6| 0.7| 0.6| 0.8| 0.8| 0.8| 0.8| 0.8| 0.8| 0.8| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 1| 8| 112| 651| 1398| 1959| 1517| 688| 210| 50| 11| HD-Hr base 15 °C | 6| 3| 16| 77| 335| 379| 498| 377| 233| 91| 40| 23| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23| 18| 86| 538| 1685| 2853| 3579| 2935| 1627| 782| 318| 102| HD-Hr base 18 °C | 26| 24| 73| 186| 467| 495| 573| 486| 359| 212| 142| 64| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 542| 462| 270| 68| 5| 1| 1| 7| 43| 95| 179| 361| CD-Hr base 24 °C | 224| 199| 113| 52| 9| 2| 2| 16| 46| 105| 153| 226| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 73| 56| 24| 4| 0| 0| 0| 1| 9| 25| 49| 63| CD-Hr base 27 °C | 79| 59| 22| 11| 1| 0| 0| 5| 16| 47| 78| 71| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 240| 215| 87| 8| 0| 0| 0| 0| 0| 1| 13| 97| NECD-Hr base 21 °C | 132| 179| 65| 11| 0| 0| 0| 0| 1| 2| 16| 104| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3| 5| 1| 0| 0| 0| 0| 0| 0| 0| 0| 2| NECD-Hr base 24 °C | 4| 11| 2| 0| 0| 0| 0| 0| 0| 0| 0| 7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.7| 19.8| 18.6| 16.1| 13.3| 10.9| 9.6| 10.2| 12.4| 14.7| 16.6| 18.4| Average Wet Bulb Temp (WB) | 0.8| 0.7| 0.8| 0.8| 1.1| 1.0| 1.2| 1.1| 1.1| 0.8| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 2.87% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 31.4| 30.6| 29.9| 27.8| 25.0| 23.0| 23.4| 25.0| 28.5| 30.3| 31.9| 31.9| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 30.2| 30.0| 29.0| 27.4| 24.5| 22.7| 22.3| 24.0| 27.3| 28.5| 29.8| 30.5| Design maximum DB | 24.3| 24.2| 23.0| 21.0| 18.7| 16.8| 16.3| 16.6| 18.8| 20.5| 22.0| 23.9| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.9| 15.7| 13.5| 10.1| 6.3| 3.1| 1.6| 3.1| 5.0| 7.9| 11.0| 13.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.17% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.3| 24.3| 23.9| 21.8| 19.1| 17.1| 16.4| 17.0| 19.2| 20.6| 22.2| 23.7| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.9| 24.1| 23.0| 21.4| 18.9| 16.7| 15.9| 16.6| 18.7| 20.0| 21.7| 23.0| Design maximum WB | 21.9| 22.1| 20.8| 18.6| 16.7| 14.6| 13.5| 13.6| 15.5| 17.4| 19.0| 20.8| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.6| 13.9| 11.6| 8.6| 5.3| 2.3| 0.9| 2.0| 3.6| 6.0| 8.8| 11.4| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|