Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(25) station Cabramurra (old Alpine) 45 years (1967-2011)| | BoM 72161 (WMO 95916) -35.94° latitude 148.38° longitude 1482.4 m alt| | | |It is now 04-Jul-2013 01:19:40 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/25/CM_25_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/25/CM_25_DB.txt (Dry Design Day)| | B: CZ0801_NatHERS_1967-2011_w.txt => NEW33/25/CM_25_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/25/CM_25_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 25.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.07) => this Design DB was exceeded 9.8 days/year (incl std dev 4.4 days/year). 25.7 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.3 days/year (incl std dev 4.3 days/year). Design drybulb changes 3.2 °C per century (linear regression R² 0.30) ~> 27.6 °C mid century. 16.2 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.75) => this Design WB was exceeded 9.9 days/year (incl std dev 5.9 days/year). 16.0 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 11.3 days/year (incl std dev 6.8 days/year). Design wetbulb changes 9.3 °C per century (linear regression R²=0.73) ~> 21.6 °C mid century. -3.3 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.89) => this Heating DB was insufficient 10.6 days/year (incl std dev 4.5 days/year). -4.1 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.9 days/year (incl std dev 4.9 days/year). Design heating changes 0.8 °C per century (linear regression R²=0.17) ~> -3.6 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:56 followed by maximum temperature at 15:25. Nighttime cooling rate 0.222 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:54 ~ Max at 15:42 Nighttime cooling rate 0.321 °/hr from 19:50 to 07:22 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:56 ~ Max at 15:30 Nighttime cooling rate 0.297 °/hr from Inf:NaN 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 | | 25.5 DDB / 13.6 CWB | 20.4 CDB / 16.2 DWB | -3.3 DB | 7.7 DB| 28.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 1.74 % | 3.32 % | 0.23 % | 1.13 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 1.83 % | 3.42 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.47 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=224) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7275| 25.6| 16.1| 9.5| 15:42| 03:54| |+/- 1286|+/- 0.8|+/- 2.4|+/- 2.4|+/-00:54|+/-04:31| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=168) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5760| 16.5| 11.2| 5.3| 15:30| 00:56| |+/- 2172|+/- 0.9|+/- 2.0|+/- 1.9|+/-02:24|+/-07:52| +/- 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 | | 25.6 / 16.2 | 26.9 / 16.7 || -4.7 | -3.8 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 24.9 DDB / 13.4 CWB | 20.0 CDB / 15.6 DWB | -4.3 DB | 0.4 % | 23.2 DDB / 12.8 CWB | 19.7 CDB / 14.5 DWB | -3.4 DB | 1.0 % | 21.7 DDB / 12.2 CWB | 19.4 CDB / 13.4 DWB | -2.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 2663 | 3592 | 4 | 0 | mean annual degrees days |+/- 156 |+/- 172 |+/- 4 |+/- 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| | 93 | 11 | 0 | 0 | mean annual degrees hours |+/- 90 |+/- 20 |+/- 3 |+/- 0 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.0| 15.1| 12.1| 8.4| 4.9| 2.2| 0.9| 1.8| 4.3| 7.2| 10.4| 12.7| Average Temperature (DB) | 1.8| 1.5| 1.3| 1.3| 1.1| 1.0| 1.0| 1.2| 1.3| 1.4| 1.5| 1.4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1432| 1157| 2503| 4526| 7127| 8797|10051| 9428| 7381| 5619| 3525| 2358| HD-Hr base 15 °C | 649| 508| 713| 882| 766| 711| 689| 868| 888| 987| 806| 670| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2705| 2323| 4251| 6554| 9265|10867|12190|11567| 9445| 7709| 5345| 3985| HD-Hr base 18 °C | 932| 727| 862| 908| 768| 711| 689| 868| 896| 1016| 949| 858| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 48| 33| 3| 0| 0| 0| 0| 0| 0| 0| 1| 8| CD-Hr base 24 °C | 59| 51| 7| 0| 0| 0| 0| 0| 0| 0| 3| 15| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7| 4| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| CD-Hr base 27 °C | 12| 11| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 3| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- 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| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10.1| 10.2| 7.9| 4.5| 2.6| 0.1| -0.8| -0.4| 1.8| 3.8| 6.4| 8.1| Average Wet Bulb Temp (WB) | 1.2| 0.9| 0.9| 1.2| 0.8| 1.1| 0.8| 0.9| 1.0| 1.0| 1.2| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 7.10% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.7| 26.1| 23.0| 17.7| 13.6| 9.6| 7.5| 9.9| 14.4| 18.1| 22.2| 24.5| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.6| 25.3| 21.8| 16.6| 12.1| 8.5| 6.7| 8.7| 13.2| 16.5| 20.9| 23.0| Design maximum DB | 17.9| 17.7| 14.7| 11.0| 7.9| 5.1| 3.3| 4.8| 8.1| 10.9| 14.0| 15.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2.5| 4.0| 1.4| -1.2| -2.8| -4.0| -4.5| -4.5| -4.1| -3.4| -1.3| 0.2| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.73% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.6| 15.3| 13.3| 9.8| 7.8| 5.0| 3.8| 4.8| 7.8| 10.0| 12.6| 13.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.3| 16.0| 13.8| 10.5| 8.1| 5.9| 3.9| 5.2| 8.1| 10.4| 13.2| 14.2| Design maximum WB | 13.1| 13.2| 11.1| 7.8| 6.0| 4.0| 2.1| 2.6| 5.7| 7.7| 10.6| 11.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1.2| 2.7| 0.3| -2.2| -3.6| -4.9| -5.4| -5.4| -5.0| -4.4| -2.2| -0.9| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|