Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(38) station Tennant Creek 45 years (1967-2011)| | BoM 15135 (WMO 94238) -19.64° latitude 134.18° longitude 377.1 m alt| | | |It is now 04-Jul-2013 02:45:16 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/38/TE_38_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/38/TE_38_DB.txt (Dry Design Day)| | B: CZ0302_NatHERS_1967-2011_w.txt => NEW33/38/TE_38_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/38/TE_38_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 40.6 °C Design DB = mean of 10th highest 3PM each year + (std dev * 0.98) => this Design DB was exceeded 10.8 days/year (incl std dev 5.3 days/year). 41.2 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 5.3 days/year (incl std dev 2.9 days/year). Design drybulb changes 3.3 °C per century (linear regression R² 0.25) ~> 43.2 °C mid century. 24.7 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.54) => this Design WB was exceeded 10.5 days/year (incl std dev 5.1 days/year). 25.1 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 5.8 days/year (incl std dev 3.2 days/year). Design wetbulb changes 4.7 °C per century (linear regression R²=0.53) ~> 27.9 °C mid century. 9.0 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.04) => this Heating DB was insufficient 10.1 days/year (incl std dev 4.5 days/year). 8.7 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.8 days/year (incl std dev 4.4 days/year). Design heating changes -0.8 °C per century (linear regression R²=-0.13) ~> 8.2 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 06:04 followed by maximum temperature at 16:38. Nighttime cooling rate 0.655 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 06:34 ~ Max at 16:24 Nighttime cooling rate 0.849 °/hr from 19:47 to 07:12 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:36 ~ Max at 17:30 Nighttime cooling rate 0.343 °/hr from 19:41 to 07:11 (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 | | 40.6 DDB / 18.8 CWB | 27.7 CDB / 24.7 DWB | 9.0 DB |11.4 DB| 31.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.19 % | 23.56 % | 37.93 % | 0.13 % | 0.31 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 23.63 % | 37.98 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.32 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=354) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 8093| 40.6| 27.6| 13.1| 16:24| 06:34| |+/- 490|+/- 0.7|+/- 1.7|+/- 1.6|+/-01:12|+/-02:08| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=238) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5172| 24.7| 21.9| 2.8| 17:30| -2:36| |+/- 1440|+/- 0.5|+/- 1.3|+/- 1.3|+/-04:06|+/-08:05| +/- 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 | | 40.4 / 24.5 | 41.0 / 24.5 || 9.0 | 10.3 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 40.0 DDB / 18.8 CWB | 27.7 CDB / 24.3 DWB | 9.4 DB | 0.4 % | 39.0 DDB / 18.7 CWB | 27.6 CDB / 23.8 DWB | 10.6 DB | 1.0 % | 38.0 DDB / 18.7 CWB | 27.7 CDB / 23.4 DWB | 11.7 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 63 | 180 | 1243 | 706 | mean annual degrees days |+/- 23 |+/- 51 |+/- 252 |+/- 184 | +/- 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| | 29828 | 16934 | 1448 | 27 | mean annual degrees hours |+/- 6060 |+/- 4407 |+/- 794 |+/- 29 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 30.3| 29.5| 28.3| 25.6| 21.4| 18.1| 17.9| 20.7| 24.8| 28.1| 29.8| 30.7| Average Temperature (DB) | 1.9| 2.0| 1.7| 1.5| 1.6| 1.7| 1.3| 1.4| 1.6| 1.5| 1.4| 1.4| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 3| 96| 525| 597| 239| 38| 4| 4| 0| HD-Hr base 15 °C | 0| 0| 1| 12| 96| 302| 253| 135| 42| 10| 30| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 2| 39| 455| 1341| 1485| 771| 182| 30| 10| 0| HD-Hr base 18 °C | 1| 0| 4| 59| 281| 559| 442| 323| 139| 48| 63| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4581| 3694| 3348| 1963| 693| 237| 231| 696| 1886| 3407| 4229| 4862| CD-Hr base 24 °C | 1312| 1243| 1065| 652| 371| 188| 167| 320| 589| 835| 848| 971| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2835| 2184| 1835| 915| 224| 52| 51| 248| 942| 1980| 2604| 3063| CD-Hr base 27 °C | 1071| 986| 793| 424| 170| 62| 65| 163| 381| 609| 663| 801| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 437| 491| 220| 17| 1| 0| 0| 0| 1| 7| 46| 229| NECD-Hr base 21 °C | 339| 372| 250| 41| 4| 0| 0| 3| 2| 17| 52| 189| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8| 14| 2| 0| 0| 0| 0| 0| 0| 0| 0| 3| NECD-Hr base 24 °C | 12| 23| 5| 0| 0| 0| 0| 0| 0| 0| 1| 7| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.8| 20.0| 17.8| 14.5| 11.7| 9.5| 8.8| 9.9| 12.3| 14.7| 16.9| 18.8| Average Wet Bulb Temp (WB) | 1.6| 1.6| 1.7| 1.4| 1.4| 1.3| 1.3| 1.1| 1.2| 1.3| 1.2| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.59% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.1| 38.8| 36.9| 34.5| 31.4| 29.1| 29.5| 32.7| 35.9| 38.7| 40.0| 40.5| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 40.7| 40.0| 38.0| 35.2| 32.1| 29.7| 29.8| 32.9| 36.0| 38.6| 40.0| 40.6| Design maximum DB | 29.3| 29.0| 27.4| 25.2| 22.5| 19.4| 18.9| 21.4| 25.0| 27.2| 28.5| 29.4| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.3| 21.1| 19.1| 15.6| 11.3| 8.3| 7.8| 9.5| 12.4| 16.1| 18.8| 20.5| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.12% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.4| 24.7| 23.4| 21.0| 18.2| 16.4| 16.1| 17.0| 19.3| 20.9| 22.8| 23.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 24.4| 24.8| 24.1| 21.8| 19.2| 17.3| 16.9| 17.6| 19.4| 21.1| 22.4| 23.8| Design maximum WB | 23.6| 23.9| 23.2| 20.9| 17.2| 14.5| 14.6| 14.7| 17.7| 20.2| 21.7| 23.3| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.3| 13.1| 10.3| 7.9| 5.4| 3.2| 2.6| 3.1| 4.7| 7.0| 9.0| 10.8| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|