Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(14) station Armidale (old Tamworth) 45 years (1967-2011)| | BoM 56238 (WMO 95773) -30.53° latitude 151.62° longitude 1079.6 m alt| | | |It is now 04-Jul-2013 00:06:52 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/14/AA_14_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/14/AA_14_DB.txt (Dry Design Day)| | B: CZ0701_NatHERS_1967-2011_w.txt => NEW33/14/AA_14_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/14/AA_14_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 31.2 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.14) => this Design DB was exceeded 9.7 days/year (incl std dev 4.6 days/year). 31.3 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.7 days/year (incl std dev 4.6 days/year). Design drybulb changes -1.7 °C per century (linear regression R² -0.17) ~> 30.3 °C mid century. 19.5 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.60) => this Design WB was exceeded 10.0 days/year (incl std dev 6.2 days/year). 19.2 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 13.0 days/year (incl std dev 7.8 days/year). Design wetbulb changes 8.6 °C per century (linear regression R²=0.57) ~> 24.4 °C mid century. -0.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.87) => this Heating DB was insufficient 9.8 days/year (incl std dev 4.1 days/year). -2.4 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.5 days/year (incl std dev 3.7 days/year). Design heating changes -2.0 °C per century (linear regression R²=-0.30) ~> -3.6 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:34 followed by maximum temperature at 14:60. Nighttime cooling rate 0.445 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:13 ~ Max at 15:12 Nighttime cooling rate 0.552 °/hr from 19:51 to 07:14 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 02:00 ~ Max at 14:42 Nighttime cooling rate 0.400 °/hr from Inf:NaN 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 | | 31.2 DDB / 15.9 CWB | 24.8 CDB / 19.5 DWB | -0.9 DB |11.2 DB| 32.1 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.20 % | 3.92 % | 4.69 % | 0.18 % | 0.74 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 4.01 % | 4.75 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.37 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=241) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7344| 31.3| 17.4| 13.9| 15:12| 04:13| |+/- 936|+/- 0.7|+/- 2.7|+/- 2.8|+/-01:18|+/-03:49| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=178) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6419| 19.8| 14.7| 5.1| 14:42| 02:00| |+/- 1615|+/- 0.7|+/- 2.0|+/- 2.0|+/-02:12|+/-06:14| +/- 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 | | 30.9 / 19.2 | 32.1 / 19.8 || -2.4 | 1.0 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 30.2 DDB / 15.7 CWB | 23.9 CDB / 18.8 DWB | -1.8 DB | 0.4 % | 28.6 DDB / 15.2 CWB | 22.7 CDB / 17.9 DWB | -0.4 DB | 1.0 % | 27.1 DDB / 14.8 CWB | 21.9 CDB / 17.0 DWB | 0.7 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1282 | 1999 | 57 | 15 | mean annual degrees days |+/- 97 |+/- 128 |+/- 23 |+/- 9 | +/- 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| | 1370 | 355 | 1 | 0 | mean annual degrees hours |+/- 564 |+/- 220 |+/- 4 |+/- 1 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.4| 18.7| 16.8| 13.5| 9.9| 7.2| 6.3| 7.6| 10.8| 13.8| 16.2| 18.4| Average Temperature (DB) | 1.3| 1.3| 1.3| 1.2| 1.0| 0.8| 0.9| 1.1| 1.3| 1.3| 1.7| 1.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 365| 329| 747| 1820| 3714| 5356| 6126| 5349| 3313| 2024| 1072| 557| HD-Hr base 15 °C | 213| 193| 295| 482| 649| 568| 595| 692| 680| 476| 461| 268| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1020| 1010| 1791| 3315| 5685| 7409| 8249| 7415| 5062| 3489| 2171| 1349| HD-Hr base 18 °C | 378| 381| 487| 624| 699| 579| 608| 748| 806| 654| 692| 490| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 453| 275| 115| 11| 0| 0| 0| 0| 4| 43| 139| 330| CD-Hr base 24 °C | 228| 168| 122| 21| 0| 0| 0| 1| 9| 73| 142| 251| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 137| 72| 20| 1| 0| 0| 0| 0| 0| 8| 30| 88| CD-Hr base 27 °C | 103| 67| 34| 4| 0| 0| 0| 0| 0| 25| 46| 108| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 2| 2| 2| 0| 0| 0| 0| 0| 0| 0| 0| 2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.2| 13.4| 11.5| 8.3| 5.3| 3.1| 2.1| 2.7| 5.1| 7.6| 10.2| 11.9| Average Wet Bulb Temp (WB) | 1.6| 1.4| 1.5| 1.6| 1.5| 1.8| 1.8| 1.8| 1.8| 1.7| 1.6| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.73% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.0| 30.9| 28.7| 24.6| 20.6| 17.1| 17.0| 19.3| 23.8| 26.7| 28.8| 30.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 31.3| 30.2| 28.2| 24.3| 19.8| 16.1| 15.8| 18.2| 23.1| 26.0| 28.6| 30.6| Design maximum DB | 20.1| 19.8| 17.8| 14.2| 11.0| 8.8| 8.0| 9.0| 12.9| 15.1| 17.9| 19.5| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7.6| 7.9| 5.5| 2.5| -0.7| -2.8| -3.5| -3.6| -1.0| 0.6| 3.7| 5.5| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.68% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.0| 18.0| 16.7| 13.6| 11.1| 9.2| 8.7| 9.6| 12.0| 14.1| 15.8| 17.3| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.5| 19.6| 18.0| 15.2| 12.8| 11.1| 9.4| 10.8| 13.1| 15.3| 17.2| 18.6| Design maximum WB | 17.0| 17.0| 15.2| 12.2| 9.9| 8.1| 7.1| 7.4| 10.0| 11.9| 14.2| 15.4| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6.3| 7.0| 4.7| 1.4| -1.8| -4.0| -5.0| -5.0| -2.3| -0.7| 2.5| 4.2| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|