Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(60) station Tullamarine (Melbourne Airport) 45 years (1967-2011)| | BoM 86282 (WMO 94866) -37.67° latitude 144.83° longitude 118.8 m alt| | | |It is now 04-Jul-2013 04:55:59 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/60/TU_60_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/60/TU_60_DB.txt (Dry Design Day)| | B: CZ0607_NatHERS_1967-2011_w.txt => NEW33/60/TU_60_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/60/TU_60_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.63) => this Design DB was exceeded 10.0 days/year (incl std dev 3.5 days/year). 35.9 ° 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 3.4 days/year). Design drybulb changes -0.5 °C per century (linear regression R² -0.04) ~> 35.6 °C mid century. 20.4 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.00) => this Design WB was exceeded 10.0 days/year (incl std dev 4.5 days/year). 20.4 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.0 days/year (incl std dev 4.5 days/year). Design wetbulb changes -1.4 °C per century (linear regression R²=-0.23) ~> 19.6 °C mid century. 2.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.76) => this Heating DB was insufficient 9.6 days/year (incl std dev 3.7 days/year). 1.8 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 8.4 days/year (incl std dev 3.6 days/year). Design heating changes 2.8 °C per century (linear regression R²=0.49) ~> 3.5 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:23 followed by maximum temperature at 15:55. Nighttime cooling rate 0.313 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:28 ~ Max at 16:18 Nighttime cooling rate 0.438 °/hr from 19:57 to 06:44 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:33 ~ Max at 16:12 Nighttime cooling rate 0.346 °/hr from 19:44 to 06:55 (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 | | 35.4 DDB / 17.8 CWB | 27.6 CDB / 20.4 DWB | 2.9 DB |12.5 DB| 32.5 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.31 % | 2.59 % | 3.15 % | 0.27 % | 0.49 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.71 % | 3.28 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.56 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=130) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7545| 36.1| 16.6| 19.5| 16:18| 03:28| |+/- 1330|+/- 1.0|+/- 3.8|+/- 4.0|+/-01:30|+/-05:09| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=242) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6236| 20.7| 15.0| 5.8| 16:12| 00:33| |+/- 1912|+/- 0.8|+/- 2.1|+/- 2.1|+/-03:12|+/-08:06| +/- 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 | | 36.0 / 20.5 | 38.0 / 20.9 || 2.0 | 3.6 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 35.0 DDB / 17.6 CWB | 27.5 CDB / 20.1 DWB | 2.2 DB | 0.4 % | 32.0 DDB / 17.0 CWB | 26.6 CDB / 19.1 DWB | 3.4 DB | 1.0 % | 29.5 DDB / 16.7 CWB | 25.4 CDB / 18.2 DWB | 4.5 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 985 | 1730 | 103 | 49 | mean annual degrees days |+/- 87 |+/- 111 |+/- 27 |+/- 17 | +/- 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| | 2474 | 1168 | 10 | 0 | mean annual degrees hours |+/- 655 |+/- 408 |+/- 19 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.2| 19.6| 17.6| 14.7| 11.9| 9.6| 8.9| 9.7| 11.3| 13.3| 15.5| 17.5| Average Temperature (DB) | 1.4| 1.3| 1.1| 1.1| 0.7| 0.8| 0.8| 0.8| 0.9| 0.8| 1.1| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 356| 268| 576| 1299| 2440| 3734| 4328| 3805| 2840| 2058| 1221| 714| HD-Hr base 15 °C | 192| 152| 234| 402| 367| 540| 520| 487| 472| 324| 311| 252| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1142| 924| 1576| 2717| 4352| 5778| 6454| 5874| 4679| 3699| 2528| 1791| HD-Hr base 18 °C | 389| 338| 419| 587| 444| 558| 534| 541| 580| 434| 466| 434| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 692| 662| 349| 57| 2| 0| 0| 0| 5| 59| 208| 439| CD-Hr base 24 °C | 335| 289| 169| 54| 6| 0| 0| 1| 10| 65| 165| 255| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 364| 337| 145| 11| 0| 0| 0| 0| 0| 17| 82| 212| CD-Hr base 27 °C | 216| 183| 100| 18| 0| 0| 0| 0| 2| 26| 91| 159| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5| 4| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 12| 9| 1| 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 24 °C | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.7| 14.1| 12.8| 10.8| 9.1| 7.4| 6.6| 6.9| 8.0| 9.4| 11.1| 12.3| Average Wet Bulb Temp (WB) | 1.2| 1.1| 1.0| 1.0| 0.7| 0.7| 0.7| 0.6| 0.8| 0.7| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.59% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 38.2| 37.7| 33.9| 28.1| 22.3| 17.3| 16.5| 19.0| 23.1| 28.5| 32.7| 35.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.5| 35.1| 32.0| 27.0| 21.4| 16.4| 15.4| 18.0| 21.5| 26.0| 30.1| 33.0| Design maximum DB | 23.0| 23.2| 20.8| 17.7| 14.0| 11.7| 10.8| 11.0| 14.0| 16.1| 19.0| 20.3| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.5| 9.0| 7.2| 4.8| 3.4| 1.2| 0.9| 1.3| 2.2| 3.0| 4.8| 6.9| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.23% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.1| 21.1| 19.5| 17.2| 14.9| 12.5| 11.6| 12.5| 14.5| 17.2| 18.9| 19.8| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.4| 20.5| 19.0| 17.0| 14.6| 12.0| 11.1| 11.9| 14.1| 16.5| 18.2| 19.2| Design maximum WB | 17.7| 18.2| 16.8| 14.4| 12.7| 10.6| 9.2| 9.6| 11.3| 13.3| 15.3| 16.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6.4| 7.1| 5.6| 3.8| 2.5| 0.6| 0.2| 0.6| 1.3| 2.1| 3.8| 5.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|