Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(35) station Mackay 45 years (1967-2011)| | BoM 33119 (WMO 94367) -21.12° latitude 149.22° longitude 36.3 m alt| | | |It is now 04-Jul-2013 02:25:13 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/35/MK_35_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/35/MK_35_DB.txt (Dry Design Day)| | B: CZ0201_NatHERS_1967-2011_w.txt => NEW33/35/MK_35_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/35/MK_35_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 32.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.66) => this Design DB was exceeded 10.1 days/year (incl std dev 5.4 days/year). 32.4 ° 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 5.4 days/year). Design drybulb changes 2.7 °C per century (linear regression R² 0.44) ~> 34.0 °C mid century. 26.8 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.96) => this Design WB was exceeded 10.2 days/year (incl std dev 5.0 days/year). 26.8 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.2 days/year (incl std dev 5.0 days/year). Design wetbulb changes 1.9 °C per century (linear regression R²=0.47) ~> 27.9 °C mid century. 10.2 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.89) => this Heating DB was insufficient 9.8 days/year (incl std dev 4.1 days/year). 9.0 ° 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 4.1 days/year). Design heating changes 1.7 °C per century (linear regression R²=0.25) ~> 10.1 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:58 followed by maximum temperature at 14:36. Nighttime cooling rate 0.304 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:34 ~ Max at 14:06 Nighttime cooling rate 0.269 °/hr from 19:40 to 07:4 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:28 ~ Max at 14:48 Nighttime cooling rate 0.189 °/hr from 19:41 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 | | 32.4 DDB / 25.0 CWB | 29.5 CDB / 26.8 DWB | 10.2 DB | 5.7 DB| 22.2 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.16 % | 3.38 % | 3.23 % | 0.19 % | 0.56 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 3.44 % | 3.27 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.32 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=359) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7725| 32.5| 24.8| 7.7| 14:06| 05:34| |+/- 787|+/- 0.7|+/- 1.5|+/- 1.5|+/-00:54|+/-02:46| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=434) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6690| 26.7| 23.7| 3.1| 14:48| 00:28| |+/- 1463|+/- 0.5|+/- 1.2|+/- 1.2|+/-02:36|+/-07:55| +/- 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 | | 32.1 / 26.7 | 32.8 / 27.1 || 9.1 | 12.3 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 31.7 DDB / 24.7 CWB | 29.2 CDB / 26.5 DWB | 9.7 DB | 0.4 % | 30.8 DDB / 24.4 CWB | 28.6 CDB / 25.9 DWB | 11.1 DB | 1.0 % | 30.1 DDB / 24.0 CWB | 28.2 CDB / 25.5 DWB | 12.4 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 44 | 140 | 404 | 89 | mean annual degrees days |+/- 15 |+/- 35 |+/- 54 |+/- 27 | +/- 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| | 9687 | 2138 | 6797 | 737 | mean annual degrees hours |+/- 1299 |+/- 660 |+/- 1111 |+/- 319 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.8| 26.6| 25.6| 23.6| 20.8| 18.0| 17.2| 18.5| 21.0| 23.5| 25.3| 26.4| Average Temperature (DB) | 0.7| 0.7| 0.5| 0.6| 0.7| 0.9| 0.9| 0.7| 0.7| 0.7| 0.6| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 1| 57| 287| 425| 234| 47| 1| 0| 0| HD-Hr base 15 °C | 0| 0| 0| 3| 60| 171| 195| 129| 45| 3| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 17| 263| 865| 1179| 768| 245| 30| 1| 0| HD-Hr base 18 °C | 0| 0| 2| 24| 170| 357| 409| 267| 138| 25| 3| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2103| 1749| 1378| 503| 71| 8| 4| 27| 161| 603| 1193| 1886| CD-Hr base 24 °C | 439| 405| 330| 204| 63| 13| 7| 37| 102| 248| 300| 494| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 573| 406| 225| 39| 1| 0| 0| 1| 12| 90| 267| 524| CD-Hr base 27 °C | 261| 220| 128| 42| 2| 2| 0| 3| 16| 76| 126| 273| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1609| 1586| 1115| 368| 77| 9| 1| 4| 33| 216| 553| 1226| NECD-Hr base 21 °C | 413| 367| 353| 261| 81| 21| 2| 9| 58| 179| 276| 497| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 223| 227| 95| 13| 0| 0| 0| 0| 0| 3| 29| 147| NECD-Hr base 24 °C | 140| 149| 88| 27| 1| 0| 0| 0| 0| 7| 46| 132| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.2| 23.4| 22.3| 20.5| 18.0| 15.3| 14.5| 15.5| 17.4| 19.5| 21.1| 22.5| Average Wet Bulb Temp (WB) | 0.6| 0.6| 0.6| 0.7| 1.0| 1.1| 1.2| 1.0| 1.0| 0.9| 0.7| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.87% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.6| 31.8| 30.9| 29.0| 26.6| 24.9| 24.8| 26.0| 28.4| 30.3| 31.4| 32.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.5| 31.7| 30.6| 29.0| 26.4| 24.2| 23.7| 25.6| 27.9| 29.9| 31.1| 32.3| Design maximum DB | 26.8| 27.0| 26.3| 24.8| 22.5| 19.8| 19.0| 19.7| 21.5| 23.8| 25.1| 26.3| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.0| 21.2| 19.3| 16.4| 11.7| 8.6| 7.5| 8.8| 12.0| 15.4| 18.5| 19.8| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.80% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.9| 26.9| 26.1| 24.4| 22.9| 21.1| 20.2| 21.0| 22.3| 23.9| 25.1| 26.5| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.9| 26.8| 26.1| 24.6| 22.9| 21.2| 20.4| 21.0| 22.3| 24.1| 25.3| 26.6| Design maximum WB | 25.3| 25.3| 24.5| 23.2| 21.3| 19.3| 18.7| 19.1| 20.8| 22.5| 23.6| 24.8| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.6| 19.6| 17.6| 14.1| 9.2| 6.4| 5.3| 5.9| 8.6| 12.4| 15.4| 17.5| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|