Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(69) station Thredbo (Village) 45 years (1967-2011)| | BoM 71041 (WMO 95908) -36.49° latitude 148.29° longitude 1367.9 m alt| | | |It is now 04-Jul-2013 05:53:31 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/69/TH_69_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/69/TH_69_DB.txt (Dry Design Day)| | B: CZ0802_NatHERS_1967-2011_w.txt => NEW33/69/TH_69_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/69/TH_69_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 26.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.31) => this Design DB was exceeded 10.1 days/year (incl std dev 4.7 days/year). 26.5 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.8 days/year (incl std dev 4.6 days/year). Design drybulb changes 1.7 °C per century (linear regression R² 0.11) ~> 27.5 °C mid century. 16.5 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.40) => this Design WB was exceeded 10.0 days/year (incl std dev 7.1 days/year). 16.3 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.8 days/year (incl std dev 7.6 days/year). Design wetbulb changes 4.7 °C per century (linear regression R²=0.42) ~> 19.1 °C mid century. -11.6 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.99) => this Heating DB was insufficient 12.9 days/year (incl std dev 10.0 days/year). -10.9 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 26.1 days/year (incl std dev 19.8 days/year). Design heating changes 2.6 °C per century (linear regression R²=0.14) ~> -9.3 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:43 followed by maximum temperature at 14:42. Nighttime cooling rate 0.347 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:27 ~ Max at 14:48 Nighttime cooling rate 0.528 °/hr from 20:3 to 06:45 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 02:19 ~ Max at 16:00 Nighttime cooling rate 0.391 °/hr from 19:50 to 06:41 (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 | | 26.4 DDB / 14.6 CWB | 21.7 CDB / 16.5 DWB | -11.6 DB |10.7 DB| 38.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.22 % | 0.94 % | 1.86 % | 0.21 % | 0.43 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 1.00 % | 2.00 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.42 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=138) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6976| 27.0| 12.5| 14.6| 14:48| 03:27| |+/- 1261|+/- 1.0|+/- 3.8|+/- 3.8|+/-01:06|+/-04:39| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=93) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6570| 16.5| 10.3| 6.2| 16:00| 02:19| |+/- 1764|+/- 0.9|+/- 3.2|+/- 3.4|+/-03:06|+/-06:52| +/- 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 | | 26.2 / 16.2 | 27.5 / 17.7 || -12.5 | -8.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 25.3 DDB / 14.2 CWB | 22.4 CDB / 15.5 DWB | -11.6 DB | 0.4 % | 23.4 DDB / 13.7 CWB | 21.3 CDB / 14.6 DWB | -8.9 DB | 1.0 % | 21.5 DDB / 13.0 CWB | 19.6 CDB / 13.8 DWB | -7.2 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 3316 | 4268 | 5 | 1 | mean annual degrees days |+/- 351 |+/- 379 |+/- 6 |+/- 1 | +/- 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| | 122 | 17 | 4 | 0 | mean annual degrees hours |+/- 132 |+/- 32 |+/- 22 |+/- 2 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.3| 13.0| 10.2| 6.2| 2.6| -0.7| -2.0| -0.6| 2.4| 5.9| 9.3| 11.3| Average Temperature (DB) | 2.5| 1.9| 1.9| 1.7| 1.2| 1.9| 1.7| 1.9| 2.0| 1.7| 1.8| 1.7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2350| 2133| 3744| 6067| 8729|10755|12073|11073| 8681| 6495| 4219| 3271| HD-Hr base 15 °C | 1114| 842| 1093| 1160| 836| 1297| 1233| 1354| 1402| 1154| 1021| 874| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3822| 3527| 5576| 8084|10865|12825|14212|13211|10744| 8554| 6033| 4970| HD-Hr base 18 °C | 1402| 1043| 1236| 1188| 838| 1298| 1233| 1354| 1408| 1202| 1153| 1062| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 58| 36| 8| 0| 0| 0| 0| 0| 0| 0| 5| 15| CD-Hr base 24 °C | 71| 58| 23| 0| 0| 0| 0| 0| 0| 1| 14| 23| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9| 6| 1| 0| 0| 0| 0| 0| 0| 0| 1| 1| CD-Hr base 27 °C | 17| 15| 4| 0| 0| 0| 0| 0| 0| 0| 3| 2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| 2| 1| NECD-Hr base 21 °C | 1| 3| 1| 0| 0| 0| 0| 0| 0| 0| 13| 8| +/- 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| 1| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 9.7| 9.8| 7.5| 3.9| 1.1| -1.8| -2.9| -1.8| 0.7| 3.3| 6.3| 7.8| Average Wet Bulb Temp (WB) | 1.8| 1.7| 1.7| 1.6| 1.2| 1.8| 1.7| 1.8| 1.8| 1.4| 1.9| 1.5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.73% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.1| 25.8| 23.3| 18.2| 14.1| 9.9| 7.8| 10.8| 14.2| 19.6| 23.2| 25.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.6| 25.7| 22.6| 17.8| 13.6| 9.1| 7.6| 10.0| 14.1| 18.5| 22.3| 24.4| Design maximum DB | 15.9| 14.8| 12.4| 8.2| 5.2| 2.3| 0.3| 1.9| 4.9| 8.7| 11.9| 13.5| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | -0.3| 0.4| -2.2| -5.7| -7.2| -9.3|-10.1| -9.3| -8.0| -7.4| -4.5| -3.6| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 1.81% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.1| 16.0| 14.6| 10.9| 8.5| 5.9| 4.6| 6.0| 8.1| 11.0| 13.6| 14.8| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.3| 16.6| 15.3| 11.4| 8.9| 6.6| 5.7| 7.0| 8.9| 11.5| 15.4| 14.6| Design maximum WB | 13.0| 13.2| 11.2| 7.2| 5.0| 3.0| 1.0| 2.2| 4.6| 7.9| 11.6| 11.1| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | -1.6| -0.6| -3.2| -6.6| -7.9| -9.9|-10.6| -9.8| -8.5| -8.1| -5.4| -4.5| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|