Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(34) station Learmonth 36 years (1976-2011)| | BoM 5007 (WMO 94302) -22.24° latitude 114.10° longitude 5.5 m alt| | | |It is now 04-Jul-2013 02:18:32 -> computational time was 5 minutes| | OUTPUTS | | INPUTS => NEW33/34/LM_34_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/34/LM_34_DB.txt (Dry Design Day)| | B: CZ0111_NatHERS_1976-2011_w.txt => NEW33/34/LM_34_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/34/LM_34_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 42.3 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.30) => this Design DB was exceeded 9.7 days/year (incl std dev 3.7 days/year). 42.3 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 10.2 days/year (incl std dev 4.0 days/year). Design drybulb changes 0.2 °C per century (linear regression R² 0.03) ~> 42.4 °C mid century. 26.5 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.31) => this Design WB was exceeded 10.2 days/year (incl std dev 6.0 days/year). 26.4 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.9 days/year (incl std dev 6.2 days/year). Design wetbulb changes 0.7 °C per century (linear regression R²=0.10) ~> 26.8 °C mid century. 9.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.03) => this Heating DB was insufficient 9.1 days/year (incl std dev 5.1 days/year). 8.0 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 8.8 days/year (incl std dev 4.3 days/year). Design heating changes -3.4 °C per century (linear regression R²=-0.33) ~> 6.1 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 06:08 followed by maximum temperature at 15:40. Nighttime cooling rate 0.571 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:55 ~ Max at 15:24 Nighttime cooling rate 0.643 °/hr from 19:47 to 07:18 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -5:50 ~ Max at 15:48 Nighttime cooling rate 0.341 °/hr from Inf:NaN to 07:8 (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 | | 42.3 DDB / 20.5 CWB | 30.2 CDB / 26.5 DWB | 9.0 DB |15.4 DB| 33.3 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.18 % | 21.09 % | 17.38 % | 0.13 % | 0.36 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 21.17 % | 17.43 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.31 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=196) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 8216| 42.5| 23.9| 18.6| 15:24| 05:55| |+/- 714|+/- 0.7|+/- 2.6|+/- 2.5|+/-00:48|+/-03:00| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=173) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6622| 26.5| 21.9| 4.5| 15:48| -5:50| |+/- 1507|+/- 0.5|+/- 2.6|+/- 2.6|+/-03:36|+/-08:04| +/- 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 | | 41.9 / 26.2 | 43.0 / 26.5 || 8.5 | 12.7 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 41.1 DDB / 20.2 CWB | 29.9 CDB / 26.0 DWB | 9.0 DB | 0.4 % | 39.4 DDB / 20.2 CWB | 29.7 CDB / 25.4 DWB | 10.3 DB | 1.0 % | 37.9 DDB / 20.3 CWB | 29.6 CDB / 24.8 DWB | 11.5 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 68 | 201 | 945 | 519 | mean annual degrees days |+/- 20 |+/- 35 |+/- 80 |+/- 59 | +/- 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| | 22673 | 12459 | 2837 | 325 | mean annual degrees hours |+/- 1920 |+/- 1423 |+/- 1220 |+/- 302 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 29.2| 29.6| 28.9| 26.4| 22.0| 18.6| 17.6| 19.0| 21.1| 23.7| 25.4| 27.6| Average Temperature (DB) | 1.0| 1.0| 0.9| 0.7| 1.1| 0.9| 0.8| 0.8| 0.8| 1.1| 1.1| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 77| 380| 623| 390| 136| 22| 1| 0| HD-Hr base 15 °C | 1| 0| 0| 1| 91| 215| 235| 185| 70| 26| 3| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 1| 13| 343| 1019| 1486| 1097| 603| 212| 47| 5| HD-Hr base 18 °C | 2| 0| 4| 19| 240| 357| 351| 296| 155| 112| 39| 5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 3971| 3791| 3748| 2280| 775| 106| 71| 256| 729| 1610| 2163| 3174| CD-Hr base 24 °C | 623| 644| 565| 327| 304| 68| 57| 137| 250| 455| 479| 504| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2445| 2240| 2172| 1126| 234| 6| 4| 43| 248| 809| 1200| 1931| CD-Hr base 27 °C | 499| 539| 450| 247| 160| 8| 8| 45| 144| 330| 372| 395| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 588| 1014| 740| 237| 59| 11| 3| 0| 0| 2| 19| 163| NECD-Hr base 21 °C | 495| 544| 442| 244| 73| 14| 10| 1| 1| 5| 24| 198| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 69| 139| 90| 19| 0| 0| 0| 0| 0| 0| 0| 9| NECD-Hr base 24 °C | 148| 149| 100| 48| 1| 0| 0| 0| 0| 0| 0| 29| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.8| 22.0| 20.9| 19.0| 15.9| 13.9| 12.5| 13.0| 14.0| 15.6| 17.2| 19.0| Average Wet Bulb Temp (WB) | 1.1| 1.1| 1.1| 1.0| 1.7| 1.4| 1.4| 1.0| 0.8| 0.8| 0.8| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.81% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 43.5| 42.4| 41.2| 37.5| 32.7| 27.9| 27.4| 29.9| 33.9| 37.5| 39.7| 42.5| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 42.4| 41.3| 40.0| 36.6| 32.0| 27.0| 26.5| 29.2| 32.4| 36.5| 38.5| 41.0| Design maximum DB | 27.0| 27.7| 27.2| 25.0| 21.9| 20.1| 18.0| 17.6| 18.0| 20.3| 22.5| 25.1| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.0| 20.7| 18.9| 16.7| 11.4| 8.4| 7.0| 8.3| 10.4| 12.7| 15.1| 17.1| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 1.87% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.7| 26.4| 26.3| 24.9| 23.0| 21.5| 20.1| 20.3| 20.0| 21.1| 22.5| 24.3| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.1| 26.6| 26.2| 25.1| 23.1| 21.7| 20.2| 20.4| 19.8| 20.9| 22.1| 24.4| Design maximum WB | 25.3| 25.5| 25.1| 23.6| 21.7| 20.7| 19.0| 17.6| 17.7| 18.7| 20.9| 22.9| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 14.2| 16.0| 13.8| 11.6| 7.5| 5.6| 4.2| 4.5| 6.0| 8.0| 10.9| 12.7| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|