Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(21) station Melbourne RO 45 years (1967-2011)| | BoM 86071 (WMO 94868) -37.81° latitude 144.97° longitude 32.2 m alt| | | |It is now 04-Jul-2013 00:54:57 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/21/ME_21_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/21/ME_21_DB.txt (Dry Design Day)| | B: CZ0609_NatHERS_1967-2011_w.txt => NEW33/21/ME_21_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/21/ME_21_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.69) => this Design DB was exceeded 10.0 days/year (incl std dev 3.7 days/year). 35.8 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.1 days/year (incl std dev 3.4 days/year). Design drybulb changes 2.1 °C per century (linear regression R² 0.18) ~> 37.1 °C mid century. 20.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.77) => this Design WB was exceeded 9.9 days/year (incl std dev 4.1 days/year). 20.5 ° 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 3.9 days/year). Design wetbulb changes 1.6 °C per century (linear regression R²=0.29) ~> 21.4 °C mid century. 3.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.95) => this Heating DB was insufficient 9.7 days/year (incl std dev 3.9 days/year). 3.1 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.0 days/year (incl std dev 4.4 days/year). Design heating changes 3.7 °C per century (linear regression R²=0.57) ~> 5.4 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 02:56 followed by maximum temperature at 15:36. Nighttime cooling rate 0.391 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 02:22 ~ Max at 16:06 Nighttime cooling rate 0.711 °/hr from 19:52 to 07:26 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:10 ~ Max at 16:36 Nighttime cooling rate 0.522 °/hr from 19:56 to 06:54 (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 | | 35.5 DDB / 18.2 CWB | 27.5 CDB / 20.3 DWB | 3.9 DB |11.6 DB| 31.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.30 % | 2.67 % | 3.33 % | 0.37 % | 0.38 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.80 % | 3.52 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.64 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=134) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7428| 36.2| 18.2| 18.0| 16:06| 02:22| |+/- 1259|+/- 0.9|+/- 3.4|+/- 3.7|+/-01:06|+/-07:09| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=289) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6180| 20.5| 15.7| 4.9| 16:36| -3:10| |+/- 1956|+/- 0.9|+/- 1.8|+/- 1.8|+/-03:24|+/-09:16| +/- 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 / 20.7 | 37.7 / 21.0 || 3.3 | 4.3 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 34.9 DDB / 18.1 CWB | 27.5 CDB / 20.3 DWB | 3.9 DB | 0.4 % | 32.2 DDB / 17.5 CWB | 26.7 CDB / 19.4 DWB | 5.1 DB | 1.0 % | 29.7 DDB / 17.1 CWB | 25.8 CDB / 18.6 DWB | 6.2 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 668 | 1333 | 108 | 50 | mean annual degrees days |+/- 82 |+/- 117 |+/- 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| | 2590 | 1209 | 13 | 0 | mean annual degrees hours |+/- 659 |+/- 411 |+/- 23 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.2| 20.6| 18.8| 16.0| 13.3| 11.0| 10.3| 11.3| 12.9| 14.9| 16.9| 18.6| Average Temperature (DB) | 1.4| 1.3| 1.0| 1.0| 0.7| 0.8| 0.7| 0.8| 1.1| 0.8| 1.1| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 114| 78| 240| 755| 1681| 2825| 3337| 2808| 1963| 1283| 646| 305| HD-Hr base 15 °C | 86| 62| 126| 271| 334| 509| 500| 475| 474| 264| 218| 155| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 641| 482| 965| 1976| 3460| 4833| 5443| 4808| 3674| 2770| 1784| 1156| HD-Hr base 18 °C | 292| 220| 314| 478| 459| 550| 524| 568| 624| 402| 415| 381| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 690| 682| 364| 66| 2| 0| 0| 0| 8| 84| 243| 450| CD-Hr base 24 °C | 341| 316| 163| 64| 5| 0| 0| 1| 18| 82| 157| 243| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 362| 345| 150| 13| 0| 0| 0| 0| 1| 24| 96| 218| CD-Hr base 27 °C | 217| 198| 95| 21| 0| 0| 0| 0| 5| 35| 86| 153| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7| 5| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 15| 11| 4| 0| 0| 0| 0| 0| 1| 1| 2| 1| +/- 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| 1| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.3| 14.8| 13.6| 11.6| 9.9| 8.1| 7.3| 7.7| 8.7| 10.1| 11.7| 12.9| Average Wet Bulb Temp (WB) | 1.1| 1.0| 0.9| 0.9| 0.6| 0.7| 0.6| 0.6| 0.7| 0.6| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.04% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 38.0| 37.8| 34.2| 28.3| 22.9| 18.1| 17.4| 20.0| 24.1| 29.3| 33.2| 36.0| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.5| 35.6| 32.0| 27.2| 22.2| 17.4| 16.6| 19.4| 22.7| 27.5| 30.9| 33.8| Design maximum DB | 23.7| 24.0| 21.2| 18.5| 15.6| 12.9| 11.8| 12.9| 15.7| 17.6| 20.4| 21.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 11.1| 11.7| 9.5| 6.6| 4.5| 2.4| 2.4| 3.0| 4.3| 5.6| 7.7| 9.6| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.09% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.4| 21.3| 19.6| 17.2| 15.1| 12.8| 11.8| 12.7| 15.1| 17.3| 18.8| 19.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.4| 20.3| 19.1| 16.9| 14.7| 12.2| 11.3| 12.0| 13.8| 16.0| 17.9| 18.9| Design maximum WB | 18.3| 18.6| 17.4| 14.8| 13.1| 10.9| 9.7| 10.0| 11.7| 13.7| 15.5| 16.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.0| 8.5| 7.2| 5.3| 3.6| 1.8| 1.6| 2.1| 2.9| 3.9| 5.6| 6.9| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|