Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(28) station Richmond 45 years (1967-2011)| | BoM 67105 (WMO 95753) -33.60° latitude 150.78° longitude 20.0 m alt| | | |It is now 04-Jul-2013 01:39:45 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/28/RI_28_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/28/RI_28_DB.txt (Dry Design Day)| | B: CZ0602_NatHERS_1967-2011_w.txt => NEW33/28/RI_28_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/28/RI_28_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 37.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.51) => this Design DB was exceeded 9.8 days/year (incl std dev 4.2 days/year). 37.5 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.8 days/year (incl std dev 4.2 days/year). Design drybulb changes 1.4 °C per century (linear regression R² 0.10) ~> 38.4 °C mid century. 23.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.34) => this Design WB was exceeded 10.5 days/year (incl std dev 4.2 days/year). 23.4 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.7 days/year (incl std dev 4.1 days/year). Design wetbulb changes 1.1 °C per century (linear regression R²=0.21) ~> 24.0 °C mid century. -0.3 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.97) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.8 days/year). -0.8 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.3 days/year (incl std dev 4.8 days/year). Design heating changes -1.7 °C per century (linear regression R²=-0.23) ~> -1.8 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:33 followed by maximum temperature at 15:24. Nighttime cooling rate 0.573 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:04 ~ Max at 15:42 Nighttime cooling rate 0.849 °/hr from 19:48 to 07:18 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:42 ~ Max at 15:42 Nighttime cooling rate 0.482 °/hr from 19:41 to 06:29 (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 | | 37.5 DDB / 20.1 CWB | 29.2 CDB / 23.3 DWB | -0.3 DB |15.1 DB| 37.8 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.23 % | 5.25 % | 3.59 % | 0.28 % | 0.22 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 5.36 % | 3.68 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.49 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=150) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7397| 38.0| 17.9| 20.1| 15:42| 05:04| |+/- 1073|+/- 1.0|+/- 2.9|+/- 3.0|+/-01:00|+/-03:45| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=236) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5871| 23.7| 18.7| 5.0| 15:42| 00:42| |+/- 1749|+/- 0.9|+/- 2.0|+/- 1.9|+/-02:42|+/-07:27| +/- 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 | | 37.4 / 23.4 | 39.0 / 23.9 || -0.2 | 2.1 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 36.1 DDB / 19.8 CWB | 28.8 CDB / 23.0 DWB | 0.3 DB | 0.4 % | 33.6 DDB / 19.6 CWB | 27.4 CDB / 22.1 DWB | 1.7 DB | 1.0 % | 31.3 DDB / 19.1 CWB | 26.6 CDB / 21.4 DWB | 3.0 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 629 | 1120 | 189 | 83 | mean annual degrees days |+/- 67 |+/- 84 |+/- 47 |+/- 29 | +/- 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| | 4529 | 1991 | 250 | 9 | mean annual degrees hours |+/- 1128 |+/- 689 |+/- 163 |+/- 14 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.8| 22.4| 20.5| 17.3| 13.7| 11.0| 10.0| 11.6| 14.6| 17.4| 19.6| 21.7| Average Temperature (DB) | 1.1| 1.1| 1.0| 0.9| 0.8| 0.9| 0.7| 0.8| 0.9| 1.0| 1.2| 1.2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 28| 21| 96| 615| 1815| 3036| 3762| 2988| 1642| 757| 261| 79| HD-Hr base 15 °C | 40| 25| 71| 238| 488| 540| 472| 419| 278| 226| 135| 59| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 191| 161| 458| 1524| 3320| 4841| 5681| 4700| 2966| 1765| 877| 394| HD-Hr base 18 °C | 138| 109| 216| 370| 539| 589| 503| 467| 391| 340| 280| 186| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1141| 851| 481| 134| 8| 0| 0| 13| 101| 322| 549| 929| CD-Hr base 24 °C | 411| 376| 242| 109| 12| 1| 2| 38| 87| 202| 328| 400| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 564| 382| 167| 30| 0| 0| 0| 2| 28| 131| 249| 437| CD-Hr base 27 °C | 263| 239| 133| 43| 2| 0| 0| 10| 35| 109| 203| 249| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 98| 96| 21| 0| 0| 0| 0| 0| 0| 0| 6| 29| NECD-Hr base 21 °C | 88| 95| 32| 1| 0| 0| 0| 0| 0| 0| 11| 42| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4| 5| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 24 °C | 8| 11| 1| 0| 0| 0| 0| 0| 0| 0| 0| 2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.9| 18.2| 16.7| 13.7| 10.7| 8.2| 6.9| 7.7| 10.0| 12.4| 14.6| 16.4| Average Wet Bulb Temp (WB) | 1.0| 0.9| 0.9| 1.1| 1.1| 1.0| 1.0| 1.0| 0.8| 0.9| 1.1| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.16% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 39.6| 37.5| 34.1| 29.7| 25.4| 21.8| 22.0| 25.2| 29.8| 33.8| 35.8| 37.6| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.6| 36.1| 32.7| 28.7| 24.4| 20.8| 20.8| 24.2| 28.6| 32.5| 34.6| 36.1| Design maximum DB | 22.5| 22.1| 20.4| 17.7| 15.0| 13.3| 12.0| 12.8| 15.2| 17.4| 19.6| 21.0| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.4| 12.8| 10.2| 5.7| 1.7| -0.9| -1.7| -0.6| 2.2| 5.2| 8.4| 10.5| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.93% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.4| 24.3| 22.5| 19.7| 17.5| 15.3| 13.9| 15.0| 17.4| 19.6| 21.8| 22.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.3| 23.4| 21.7| 19.3| 17.3| 15.0| 13.4| 14.4| 16.4| 18.5| 20.7| 21.9| Design maximum WB | 20.9| 21.2| 19.6| 16.8| 14.6| 12.5| 10.6| 10.8| 13.3| 15.5| 18.0| 19.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10.4| 11.4| 8.7| 4.9| 1.2| -1.3| -2.0| -1.1| 1.6| 4.2| 6.8| 8.3| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|