Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(64) station Cape Otway 45 years (1967-2011)| | BoM 90015 (WMO 94842) -38.86° latitude 143.51° longitude 83.0 m alt| | | |It is now 04-Jul-2013 05:20:09 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/64/OT_64_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/64/OT_64_DB.txt (Dry Design Day)| | B: CZ0614_NatHERS_1967-2011_w.txt => NEW33/64/OT_64_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/64/OT_64_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 29.0 °C Design DB = mean of 10th highest 3PM each year + (std dev * 3.07) => this Design DB was exceeded 10.3 days/year (incl std dev 3.4 days/year). 29.4 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.4 days/year (incl std dev 3.0 days/year). Design drybulb changes 8.1 °C per century (linear regression R² 0.59) ~> 34.3 °C mid century. 19.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.56) => this Design WB was exceeded 9.5 days/year (incl std dev 3.9 days/year). 19.4 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.5 days/year (incl std dev 3.9 days/year). Design wetbulb changes -1.5 °C per century (linear regression R²=-0.25) ~> 18.5 °C mid century. 7.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.86) => this Heating DB was insufficient 9.0 days/year (incl std dev 3.4 days/year). 6.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.9 days/year (incl std dev 4.2 days/year). Design heating changes -2.0 °C per century (linear regression R²=-0.46) ~> 4.7 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 02:48 followed by maximum temperature at 15:25. Nighttime cooling rate 0.092 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at -3:27 ~ Max at 15:36 Nighttime cooling rate -0.063 °/hr from 19:52 to 06:45 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -1:22 ~ Max at 15:12 Nighttime cooling rate 0.040 °/hr from 19:56 to 07:2 (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 | | 29.0 DDB / 16.9 CWB | 24.0 CDB / 19.3 DWB | 7.0 DB | 5.6 DB| 22.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.56 % | 3.38 % | 2.07 % | 0.47 % | 0.94 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 3.59 % | 2.26 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.92 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=81) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 6127| 30.2| 16.7| 13.5| 15:36| -3:27| |+/- 1697|+/- 1.8|+/- 3.5|+/- 3.6|+/-03:12|+/-07:55| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=292) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5697| 19.4| 14.9| 4.5| 15:12| -1:22| |+/- 1640|+/- 0.8|+/- 2.0|+/- 2.0|+/-02:48|+/-08:18| +/- 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 | | 31.5 / 20.1 | 33.0 / 20.5 || 5.8 | 6.9 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 30.2 DDB / 17.2 CWB | 24.5 CDB / 19.6 DWB | 6.1 DB | 0.4 % | 27.0 DDB / 16.4 CWB | 22.6 CDB / 18.5 DWB | 7.0 DB | 1.0 % | 24.2 DDB / 15.9 CWB | 21.3 CDB / 17.7 DWB | 7.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 804 | 1653 | 27 | 11 | mean annual degrees days |+/- 86 |+/- 104 |+/- 11 |+/- 6 | +/- 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| | 650 | 271 | 12 | 1 | mean annual degrees hours |+/- 259 |+/- 146 |+/- 29 |+/- 5 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.7| 17.4| 16.3| 14.6| 12.9| 11.1| 10.4| 10.8| 11.6| 12.7| 14.0| 15.3| Average Temperature (DB) | 1.1| 1.2| 0.8| 0.9| 0.6| 0.6| 0.6| 0.7| 0.9| 0.6| 0.8| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 322| 186| 385| 951| 1726| 2681| 3248| 3050| 2574| 2081| 1339| 748| HD-Hr base 15 °C | 177| 122| 202| 372| 357| 406| 403| 442| 448| 332| 318| 309| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1528| 1109| 1693| 2572| 3675| 4729| 5378| 5131| 4493| 3975| 3073| 2324| HD-Hr base 18 °C | 439| 376| 399| 515| 433| 419| 413| 496| 539| 383| 436| 506| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 162| 189| 90| 27| 0| 0| 0| 0| 5| 21| 62| 95| CD-Hr base 24 °C | 157| 189| 92| 42| 1| 0| 0| 0| 19| 34| 59| 119| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 75| 89| 32| 4| 0| 0| 0| 0| 1| 4| 21| 46| CD-Hr base 27 °C | 85| 109| 43| 11| 0| 0| 0| 0| 5| 9| 28| 74| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5| 3| 0| 2| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 21 °C | 23| 7| 3| 13| 0| 0| 0| 0| 3| 1| 0| 3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 1| 0| 0| 5| 0| 0| 0| 0| 1| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.4| 13.9| 13.1| 11.6| 10.2| 8.7| 8.0| 8.1| 8.7| 9.7| 11.0| 12.1| Average Wet Bulb Temp (WB) | 1.0| 1.0| 0.9| 1.0| 0.8| 0.7| 0.6| 0.6| 0.7| 0.7| 0.8| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.64% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.5| 32.8| 30.3| 25.8| 21.0| 16.7| 15.8| 18.4| 21.8| 25.8| 29.2| 30.2| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 27.0| 29.3| 25.3| 23.3| 19.0| 15.5| 15.0| 17.0| 20.0| 22.8| 24.6| 24.0| Design maximum DB | 23.0| 23.7| 21.6| 19.7| 16.3| 13.2| 12.3| 13.3| 15.9| 18.5| 20.1| 20.5| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10.3| 11.3| 10.5| 8.3| 7.3| 5.9| 5.4| 5.6| 5.8| 6.3| 7.7| 8.8| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.25% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.2| 20.1| 19.0| 17.7| 15.1| 12.9| 12.0| 12.5| 14.5| 16.8| 17.8| 19.0| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.2| 19.4| 18.5| 16.7| 14.8| 12.6| 11.5| 12.0| 13.3| 15.0| 16.7| 17.8| Design maximum WB | 17.3| 17.6| 16.7| 15.0| 13.4| 11.2| 10.1| 10.3| 11.5| 12.9| 14.5| 15.8| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7.5| 8.1| 7.1| 5.8| 5.3| 3.9| 3.5| 3.6| 3.4| 4.1| 5.3| 6.4| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|