Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(52) station Swanbourne 18 years (1994-2011)| | BoM 9215 (WMO 94614) -31.96° latitude 115.76° longitude 41.0 m alt| | | |It is now 04-Jul-2013 04:08:55 -> computational time was 3 minutes| | OUTPUTS | | INPUTS => NEW33/52/SW_52_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/52/SW_52_DB.txt (Dry Design Day)| | B: CZ0506_NatHERS_1994-2011_w.txt => NEW33/52/SW_52_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/52/SW_52_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 37.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 2.62) => this Design DB was exceeded 10.2 days/year (incl std dev 3.6 days/year). 37.3 ° 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 3.6 days/year). Design drybulb changes 7.6 °C per century (linear regression R² 0.36) ~> 40.9 °C mid century. 22.8 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.68) => this Design WB was exceeded 9.5 days/year (incl std dev 5.0 days/year). 23.0 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.3 days/year (incl std dev 5.0 days/year). Design wetbulb changes -4.0 °C per century (linear regression R²=-0.25) ~> 21.1 °C mid century. 6.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.92) => this Heating DB was insufficient 9.8 days/year (incl std dev 3.8 days/year). 5.8 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.6 days/year (incl std dev 4.2 days/year). Design heating changes 1.2 °C per century (linear regression R²=0.11) ~> 6.4 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:52 followed by maximum temperature at 14:21. Nighttime cooling rate 0.350 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:17 ~ Max at 15:12 Nighttime cooling rate 0.446 °/hr from 19:44 to 06:39 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:10 ~ Max at 15:30 Nighttime cooling rate 0.332 °/hr from 19:41 to 06:42 (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 | | 37.3 DDB / 19.5 CWB | 27.9 CDB / 22.8 DWB | 6.0 DB |12.0 DB| 31.3 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.17 % | 6.40 % | 4.69 % | 0.35 % | 0.33 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 6.46 % | 4.85 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.50 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=50) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7782| 38.0| 21.6| 16.4| 15:12| 04:17| |+/- 1196|+/- 1.0|+/- 2.8|+/- 2.5|+/-01:06|+/-05:08| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=107) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 7081| 23.0| 17.2| 5.8| 15:30| 00:10| |+/- 1647|+/- 0.8|+/- 2.4|+/- 2.2|+/-03:06|+/-08:28| +/- 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 | | 36.6 / 23.2 | 38.1 / 23.7 || 5.7 | 7.6 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 35.6 DDB / 19.2 CWB | 27.8 CDB / 22.7 DWB | 6.1 DB | 0.4 % | 33.1 DDB / 18.9 CWB | 26.4 CDB / 21.7 DWB | 7.2 DB | 1.0 % | 31.0 DDB / 18.5 CWB | 25.8 CDB / 21.0 DWB | 8.2 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 278 | 685 | 175 | 73 | mean annual degrees days |+/- 37 |+/- 57 |+/- 40 |+/- 20 | +/- 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| | 4201 | 1756 | 171 | 4 | mean annual degrees hours |+/- 964 |+/- 492 |+/- 167 |+/- 8 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.9| 23.7| 22.2| 19.4| 16.8| 14.5| 13.5| 13.8| 14.9| 16.7| 19.4| 21.5| Average Temperature (DB) | 0.9| 1.1| 0.9| 1.0| 0.9| 0.7| 0.9| 0.8| 0.5| 0.8| 0.9| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18| 8| 48| 167| 580| 1143| 1534| 1427| 949| 578| 158| 54| HD-Hr base 15 °C | 19| 8| 42| 89| 239| 330| 500| 363| 206| 163| 80| 37| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 139| 99| 253| 665| 1548| 2549| 3211| 3048| 2340| 1613| 663| 320| HD-Hr base 18 °C | 81| 53| 129| 227| 436| 446| 601| 502| 292| 323| 215| 170| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 917| 1120| 837| 232| 41| 0| 0| 0| 6| 82| 290| 676| CD-Hr base 24 °C | 319| 414| 243| 138| 40| 1| 1| 1| 9| 54| 174| 349| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 384| 501| 346| 68| 5| 0| 0| 0| 0| 26| 116| 310| CD-Hr base 27 °C | 170| 227| 129| 58| 8| 0| 0| 0| 1| 26| 89| 190| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 44| 83| 25| 4| 0| 0| 0| 0| 0| 0| 1| 14| NECD-Hr base 21 °C | 62| 99| 27| 7| 0| 0| 0| 0| 0| 0| 3| 25| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 3| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 1| 7| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.0| 17.3| 16.2| 14.8| 13.0| 11.4| 10.7| 10.9| 11.6| 12.6| 14.4| 15.7| Average Wet Bulb Temp (WB) | 0.8| 0.9| 0.9| 0.8| 1.1| 0.9| 1.0| 1.0| 0.9| 0.7| 0.8| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.15% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 38.5| 38.7| 37.8| 32.5| 27.7| 23.2| 21.9| 22.4| 25.2| 30.8| 34.8| 37.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.2| 37.5| 36.4| 31.6| 27.4| 22.8| 21.5| 21.6| 24.0| 29.3| 33.9| 36.5| Design maximum DB | 24.7| 25.5| 24.5| 21.4| 19.5| 17.7| 16.3| 16.2| 16.7| 18.8| 21.3| 23.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.9| 13.5| 11.4| 9.7| 7.6| 6.0| 3.8| 5.1| 5.8| 7.2| 9.6| 11.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 6.10% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.8| 23.5| 22.8| 21.5| 19.8| 18.1| 17.0| 17.2| 17.4| 19.0| 20.3| 22.0| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.9| 22.9| 21.7| 20.4| 18.5| 16.8| 15.8| 16.1| 16.6| 18.2| 19.5| 21.1| Design maximum WB | 19.7| 20.0| 19.2| 17.5| 16.2| 14.6| 14.1| 14.0| 14.0| 15.3| 17.1| 18.1| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.9| 9.9| 8.8| 7.7| 6.3| 4.6| 3.0| 4.3| 4.9| 5.7| 7.3| 8.4| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|