Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB( 7) station Rockhampton 45 years (1967-2011)| | BoM 39083 (WMO 94374) -23.38° latitude 150.48° longitude 15.1 m alt| | | |It is now 03-Jul-2013 23:19:56 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/7/RO_7_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/7/RO_7_DB.txt (Dry Design Day)| | B: CZ0202_NatHERS_1967-2011_w.txt => NEW33/7/RO_7_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/7/RO_7_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 36.1 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.35) => this Design DB was exceeded 9.6 days/year (incl std dev 4.1 days/year). 36.2 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.6 days/year (incl std dev 4.1 days/year). Design drybulb changes 0.6 °C per century (linear regression R² 0.07) ~> 36.5 °C mid century. 25.6 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.14) => this Design WB was exceeded 9.1 days/year (incl std dev 3.9 days/year). 25.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.1 days/year (incl std dev 3.9 days/year). Design wetbulb changes 0.9 °C per century (linear regression R²=0.21) ~> 26.2 °C mid century. 6.7 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.85) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.2 days/year). 4.9 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.3 days/year (incl std dev 4.2 days/year). Design heating changes 1.8 °C per century (linear regression R²=0.20) ~> 6.0 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:40 followed by maximum temperature at 15:09. Nighttime cooling rate 0.501 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:36 ~ Max at 15:36 Nighttime cooling rate 0.570 °/hr from 19:46 to 07:22 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -2:12 ~ Max at 15:42 Nighttime cooling rate 0.316 °/hr from Inf:NaN to 06:51 (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 | | 36.1 DDB / 21.7 CWB | 29.0 CDB / 25.6 DWB | 6.7 DB |10.9 DB| 29.4 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.20 % | 16.17 % | 9.54 % | 0.21 % | 0.65 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 16.26 % | 9.63 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.41 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=267) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7493| 36.3| 22.6| 13.6| 15:36| 05:36| |+/- 795|+/- 0.7|+/- 2.2|+/- 2.3|+/-00:48|+/-01:55| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=307) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5836| 25.7| 22.5| 3.1| 15:42| -2:12| |+/- 1541|+/- 0.6|+/- 1.3|+/- 1.3|+/-03:48|+/-07:18| +/- 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 | | 35.8 / 25.6 | 37.1 / 25.8 || 5.4 | 10.0 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 35.1 DDB / 21.8 CWB | 28.7 CDB / 25.3 DWB | 6.0 DB | 0.4 % | 33.7 DDB / 21.7 CWB | 28.2 CDB / 24.8 DWB | 7.5 DB | 1.0 % | 32.5 DDB / 21.5 CWB | 27.9 CDB / 24.3 DWB | 9.1 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 127 | 291 | 479 | 179 | mean annual degrees days |+/- 32 |+/- 52 |+/- 61 |+/- 37 | +/- 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| | 11500 | 4287 | 3020 | 173 | mean annual degrees hours |+/- 1471 |+/- 877 |+/- 948 |+/- 122 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.7| 26.2| 25.2| 22.9| 19.8| 16.9| 16.2| 17.6| 20.2| 23.0| 24.8| 26.2| Average Temperature (DB) | 0.7| 0.9| 0.7| 0.6| 0.9| 1.0| 1.0| 0.9| 0.8| 1.0| 0.9| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 16| 243| 794| 1058| 703| 211| 22| 1| 0| HD-Hr base 15 °C | 0| 0| 1| 33| 176| 332| 428| 285| 139| 29| 2| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 4| 85| 672| 1691| 2116| 1576| 682| 151| 15| 1| HD-Hr base 18 °C | 0| 0| 9| 84| 339| 488| 585| 412| 267| 104| 22| 2| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2162| 1742| 1469| 759| 240| 51| 34| 135| 449| 985| 1449| 2023| CD-Hr base 24 °C | 455| 472| 372| 181| 105| 47| 26| 114| 196| 361| 420| 477| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 899| 668| 518| 189| 22| 2| 2| 22| 120| 361| 596| 887| CD-Hr base 27 °C | 307| 304| 236| 92| 22| 6| 3| 43| 89| 211| 267| 324| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 875| 787| 430| 90| 11| 1| 0| 0| 4| 44| 177| 600| NECD-Hr base 21 °C | 362| 368| 283| 117| 21| 4| 1| 1| 10| 52| 149| 367| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 61| 58| 18| 1| 0| 0| 0| 0| 0| 0| 3| 32| NECD-Hr base 24 °C | 61| 64| 25| 4| 0| 0| 0| 0| 0| 1| 6| 47| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.8| 21.8| 20.6| 18.3| 15.6| 12.7| 11.9| 12.8| 15.0| 17.5| 19.3| 21.0| Average Wet Bulb Temp (WB) | 0.8| 0.8| 0.9| 1.0| 1.3| 1.2| 1.5| 1.2| 1.1| 1.0| 0.9| 1.0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 4.52% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.8| 35.0| 34.3| 32.1| 29.1| 26.9| 26.9| 29.0| 32.1| 34.7| 36.0| 36.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.8| 34.7| 33.9| 31.6| 28.6| 26.8| 26.2| 28.5| 31.7| 34.3| 35.5| 36.2| Design maximum DB | 25.7| 25.5| 24.4| 22.4| 20.2| 18.1| 17.1| 17.8| 19.6| 22.3| 24.0| 25.3| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.0| 20.0| 17.7| 13.7| 8.5| 4.8| 4.2| 5.1| 8.6| 12.5| 16.4| 18.6| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.28% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.0| 25.7| 24.9| 23.0| 21.3| 19.5| 18.6| 19.4| 20.8| 22.6| 24.1| 25.4| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.6| 25.7| 24.8| 23.3| 21.5| 19.4| 19.1| 19.4| 20.6| 22.7| 23.9| 25.2| Design maximum WB | 24.6| 24.8| 24.0| 22.1| 20.0| 17.8| 16.9| 17.6| 19.3| 21.2| 22.7| 24.2| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.4| 17.3| 15.0| 11.5| 6.7| 3.3| 2.9| 3.1| 6.0| 9.8| 12.7| 15.2| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|