Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(26) station Hobart 45 years (1967-2011)| | BoM 94029 (WMO 94970) -42.89° latitude 147.33° longitude 51.4 m alt| | | |It is now 04-Jul-2013 01:26:21 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/26/HO_26_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/26/HO_26_DB.txt (Dry Design Day)| | B: CZ0709_NatHERS_1967-2011_w.txt => NEW33/26/HO_26_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/26/HO_26_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 28.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.87) => this Design DB was exceeded 10.3 days/year (incl std dev 2.9 days/year). 28.7 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.5 days/year (incl std dev 2.8 days/year). Design drybulb changes 3.0 °C per century (linear regression R² 0.31) ~> 30.5 °C mid century. 18.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.76) => this Design WB was exceeded 9.4 days/year (incl std dev 4.1 days/year). 18.2 ° 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 4.3 days/year). Design wetbulb changes -0.7 °C per century (linear regression R²=-0.13) ~> 17.8 °C mid century. 2.2 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.01) => this Heating DB was insufficient 10.2 days/year (incl std dev 3.8 days/year). 1.6 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.0 days/year (incl std dev 3.4 days/year). Design heating changes 0.5 °C per century (linear regression R²=0.10) ~> 1.9 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 02:46 followed by maximum temperature at 15:10. Nighttime cooling rate 0.284 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 02:14 ~ Max at 15:12 Nighttime cooling rate 0.317 °/hr from 19:48 to 07:20 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -4:29 ~ Max at 16:12 Nighttime cooling rate 0.265 °/hr from 19:48 to -Inf:NaN (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 | | 28.3 DDB / 16.3 CWB | 24.1 CDB / 18.3 DWB | 2.2 DB | 9.6 DB| 26.1 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.38 % | 1.96 % | 1.55 % | 0.35 % | 0.47 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.09 % | 1.71 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.65 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=135) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6295| 28.9| 14.4| 14.5| 15:12| 02:14| |+/- 1648|+/- 1.2|+/- 2.5|+/- 2.6|+/-01:30|+/-06:48| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=293) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5525| 18.5| 13.0| 5.5| 16:12| -4:29| |+/- 2015|+/- 0.7|+/- 1.9|+/- 1.9|+/-02:54|+/-09:10| +/- 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 | | 29.5 / 18.7 | 31.6 / 19.1 || 1.7 | 2.4 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 28.2 DDB / 16.3 CWB | 23.9 CDB / 18.2 DWB | 2.1 DB | 0.4 % | 25.4 DDB / 15.6 CWB | 22.5 CDB / 17.2 DWB | 3.1 DB | 1.0 % | 23.4 DDB / 15.0 CWB | 21.3 CDB / 16.3 DWB | 4.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1201 | 2054 | 17 | 6 | mean annual degrees days |+/- 96 |+/- 117 |+/- 6 |+/- 3 | +/- 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| | 411 | 144 | 1 | 0 | mean annual degrees hours |+/- 144 |+/- 75 |+/- 5 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.5| 16.6| 15.2| 13.1| 10.9| 8.6| 8.2| 9.1| 10.5| 12.1| 13.6| 15.1| Average Temperature (DB) | 0.9| 1.0| 0.8| 0.8| 0.9| 0.9| 0.7| 0.9| 1.0| 0.7| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 602| 548| 970| 1796| 3043| 4411| 4809| 4193| 3256| 2496| 1653| 1041| HD-Hr base 15 °C | 193| 214| 274| 398| 535| 637| 499| 578| 586| 376| 369| 316| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1770| 1598| 2376| 3487| 5058| 6469| 6941| 6292| 5195| 4347| 3286| 2482| HD-Hr base 18 °C | 380| 400| 414| 506| 594| 644| 505| 609| 654| 455| 489| 488| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 119| 121| 51| 7| 0| 0| 0| 0| 2| 14| 38| 59| CD-Hr base 24 °C | 87| 89| 41| 9| 0| 0| 0| 0| 8| 21| 36| 66| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 43| 46| 16| 0| 0| 0| 0| 0| 0| 3| 13| 22| CD-Hr base 27 °C | 43| 47| 19| 2| 0| 0| 0| 0| 2| 7| 15| 38| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 3| 3| 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 | 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 11.6| 12.0| 11.1| 9.4| 7.8| 6.0| 5.6| 6.0| 6.8| 8.0| 9.4| 10.5| Average Wet Bulb Temp (WB) | 0.8| 1.0| 0.9| 0.8| 0.7| 0.8| 0.6| 0.7| 0.8| 0.6| 0.8| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.35% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.4| 32.4| 29.5| 24.9| 20.4| 16.5| 16.1| 18.4| 21.5| 26.0| 28.6| 29.7| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.9| 28.5| 26.0| 23.0| 19.1| 15.5| 15.0| 17.0| 19.4| 23.1| 24.2| 25.3| Design maximum DB | 18.5| 18.9| 17.2| 15.7| 14.0| 11.8| 10.9| 11.3| 12.7| 14.0| 15.5| 16.8| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.3| 8.1| 6.8| 4.6| 3.0| 1.0| 0.7| 1.7| 2.6| 3.7| 5.4| 7.0| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.88% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.2| 19.1| 18.3| 15.7| 13.7| 11.7| 10.8| 11.3| 12.7| 15.1| 16.6| 17.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.8| 18.4| 17.2| 14.9| 13.0| 10.8| 9.9| 10.5| 11.8| 13.8| 15.6| 16.6| Design maximum WB | 15.3| 15.8| 14.8| 13.0| 11.1| 9.1| 8.2| 8.6| 9.4| 11.1| 12.8| 14.0| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5.3| 5.4| 4.4| 3.0| 1.9| 0.4| 0.0| 0.6| 1.0| 1.8| 3.1| 4.2| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|