Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(56) station Mascot (Sydney Airport) 45 years (1967-2011)| | BoM 66037 (WMO 94767) -33.94° latitude 151.17° longitude 5.0 m alt| | | |It is now 04-Jul-2013 04:32:26 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/56/MA_56_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/56/MA_56_DB.txt (Dry Design Day)| | B: CZ0513_NatHERS_1967-2011_w.txt => NEW33/56/MA_56_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/56/MA_56_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 33.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.95) => this Design DB was exceeded 10.1 days/year (incl std dev 3.0 days/year). 33.6 ° 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 2.9 days/year). Design drybulb changes 1.9 °C per century (linear regression R² 0.17) ~> 34.8 °C mid century. 22.8 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.37) => this Design WB was exceeded 10.0 days/year (incl std dev 3.9 days/year). 22.9 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.0 days/year (incl std dev 3.6 days/year). Design wetbulb changes 1.0 °C per century (linear regression R²=0.27) ~> 23.5 °C mid century. 5.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.02) => this Heating DB was insufficient 11.9 days/year (incl std dev 6.0 days/year). 4.6 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.7 days/year (incl std dev 5.3 days/year). Design heating changes 6.4 °C per century (linear regression R²=0.82) ~> 8.4 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:08 followed by maximum temperature at 15:28. Nighttime cooling rate 0.387 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:33 ~ Max at 15:00 Nighttime cooling rate 0.411 °/hr from 19:46 to 06:40 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -4:16 ~ Max at 16:06 Nighttime cooling rate 0.232 °/hr from 19:45 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 | | 33.3 DDB / 18.9 CWB | 26.4 CDB / 22.8 DWB | 5.0 DB |10.1 DB| 28.3 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.32 % | 12.58 % | 3.93 % | 0.29 % | 0.37 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 12.73 % | 4.04 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.58 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=125) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6939| 34.0| 19.3| 14.7| 15:00| 04:33| |+/- 1360|+/- 1.3|+/- 2.7|+/- 2.8|+/-01:18|+/-04:13| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=341) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6239| 22.9| 19.2| 3.7| 16:06| -4:16| |+/- 1779|+/- 0.7|+/- 1.7|+/- 1.7|+/-04:24|+/-08:31| +/- 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 | | 34.0 / 22.9 | 36.0 / 23.2 || 5.0 | 7.0 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 33.0 DDB / 18.8 CWB | 26.3 CDB / 22.7 DWB | 5.3 DB | 0.4 % | 30.0 DDB / 19.2 CWB | 25.3 CDB / 22.0 DWB | 6.4 DB | 1.0 % | 28.0 DDB / 19.1 CWB | 24.9 CDB / 21.4 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| | 336 | 746 | 96 | 31 | mean annual degrees days |+/- 71 |+/- 104 |+/- 24 |+/- 11 | +/- 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| | 2308 | 733 | 220 | 1 | mean annual degrees hours |+/- 578 |+/- 261 |+/- 130 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.6| 22.6| 21.3| 18.6| 15.6| 13.1| 12.1| 13.4| 15.7| 17.9| 19.6| 21.5| Average Temperature (DB) | 0.9| 0.9| 0.8| 0.8| 0.8| 0.9| 0.8| 0.9| 1.2| 0.9| 1.0| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 1| 16| 183| 806| 1714| 2324| 1757| 877| 297| 85| 11| HD-Hr base 15 °C | 3| 3| 23| 119| 294| 435| 517| 420| 342| 148| 72| 14| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 34| 28| 140| 723| 2042| 3435| 4212| 3426| 2117| 1121| 488| 138| HD-Hr base 18 °C | 38| 28| 99| 281| 450| 583| 584| 543| 552| 324| 241| 103| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 555| 460| 270| 82| 8| 0| 0| 7| 66| 180| 245| 434| CD-Hr base 24 °C | 235| 223| 133| 76| 12| 1| 1| 22| 67| 137| 173| 244| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 184| 132| 59| 17| 0| 0| 0| 1| 18| 71| 93| 159| CD-Hr base 27 °C | 115| 107| 48| 29| 1| 0| 0| 5| 27| 71| 94| 128| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 81| 94| 23| 0| 0| 0| 0| 0| 0| 0| 1| 20| NECD-Hr base 21 °C | 66| 86| 30| 1| 0| 0| 0| 0| 1| 1| 3| 26| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 2| 2| 0| 0| 0| 0| 0| 0| 0| 1| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.4| 18.6| 17.3| 14.7| 12.0| 9.7| 8.3| 9.0| 10.9| 13.1| 15.1| 16.8| Average Wet Bulb Temp (WB) | 0.9| 0.8| 0.8| 0.9| 1.0| 1.0| 1.0| 1.0| 0.9| 0.8| 1.0| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 3.80% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.2| 35.0| 32.2| 28.8| 25.2| 21.6| 21.7| 24.3| 29.1| 32.7| 33.9| 35.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 33.4| 33.0| 30.0| 28.0| 24.3| 21.0| 21.0| 23.8| 27.8| 31.3| 32.0| 33.0| Design maximum DB | 23.3| 23.6| 22.2| 20.0| 17.5| 15.5| 14.0| 15.1| 17.8| 19.3| 21.0| 22.2| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 15.6| 15.7| 13.2| 9.6| 6.8| 4.8| 4.1| 4.8| 6.6| 8.9| 11.3| 13.4| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.25% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.6| 23.5| 22.2| 20.3| 18.0| 15.7| 14.5| 15.9| 17.5| 19.6| 21.0| 22.4| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.6| 22.9| 21.5| 19.5| 17.5| 15.1| 13.7| 14.5| 16.4| 18.2| 20.1| 21.5| Design maximum WB | 21.4| 21.6| 20.4| 18.1| 15.8| 13.6| 11.8| 12.7| 14.6| 16.5| 18.5| 20.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 11.4| 12.3| 9.5| 6.7| 4.5| 2.7| 2.1| 2.4| 3.8| 5.7| 7.5| 9.1| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|