Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(61) station Mt Gambier 45 years (1967-2011)| | BoM 26021 (WMO 94821) -37.75° latitude 140.77° longitude 69.0 m alt| | | |It is now 04-Jul-2013 05:02:40 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/61/MG_61_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/61/MG_61_DB.txt (Dry Design Day)| | B: CZ0610_NatHERS_1967-2011_w.txt => NEW33/61/MG_61_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/61/MG_61_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 35.0 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.70) => this Design DB was exceeded 10.1 days/year (incl std dev 3.5 days/year). 35.2 ° 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 3.3 days/year). Design drybulb changes -0.1 °C per century (linear regression R² -0.00) ~> 35.2 °C mid century. 19.4 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.16) => this Design WB was exceeded 9.9 days/year (incl std dev 3.9 days/year). 19.5 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.9 days/year (incl std dev 4.0 days/year). Design wetbulb changes 0.8 °C per century (linear regression R²=0.14) ~> 19.9 °C mid century. 2.5 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.92) => this Heating DB was insufficient 10.3 days/year (incl std dev 3.9 days/year). 1.2 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.4 days/year (incl std dev 4.3 days/year). Design heating changes 0.3 °C per century (linear regression R²=0.06) ~> 1.4 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:23 followed by maximum temperature at 14:48. Nighttime cooling rate 0.297 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 03:23 ~ Max at 15:00 Nighttime cooling rate 0.530 °/hr from 19:49 to 06:39 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 00:57 ~ Max at 15:36 Nighttime cooling rate 0.374 °/hr from 19:45 to 06:42 (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 | | 35.0 DDB / 17.4 CWB | 27.2 CDB / 19.4 DWB | 2.5 DB |14.3 DB| 32.5 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.30 % | 1.79 % | 2.52 % | 0.34 % | 0.64 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 1.91 % | 2.69 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.60 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=143) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7304| 35.3| 14.5| 20.9| 15:00| 03:23| |+/- 1315|+/- 0.9|+/- 3.9|+/- 4.0|+/-01:06|+/-03:55| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=292) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6096| 19.7| 13.6| 6.1| 15:36| 00:57| |+/- 1989|+/- 0.9|+/- 2.4|+/- 2.3|+/-03:18|+/-06:53| +/- 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 | | 35.6 / 19.7 | 37.7 / 20.2 || 1.5 | 4.0 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 34.4 DDB / 17.3 CWB | 27.2 CDB / 19.3 DWB | 2.0 DB | 0.4 % | 31.3 DDB / 16.5 CWB | 26.1 CDB / 18.2 DWB | 3.1 DB | 1.0 % | 28.4 DDB / 15.9 CWB | 24.9 CDB / 17.3 DWB | 4.1 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 1115 | 1920 | 78 | 38 | mean annual degrees days |+/- 72 |+/- 89 |+/- 19 |+/- 12 | +/- 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| | 1877 | 912 | 4 | 0 | mean annual degrees hours |+/- 465 |+/- 284 |+/- 8 |+/- 1 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.7| 18.1| 16.3| 13.8| 11.5| 9.6| 9.0| 9.6| 10.8| 12.3| 14.2| 16.0| Average Temperature (DB) | 1.4| 1.2| 1.0| 1.0| 0.7| 0.7| 0.6| 0.7| 0.8| 0.7| 1.0| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 723| 570| 952| 1636| 2668| 3726| 4233| 3867| 3074| 2533| 1671| 1116| HD-Hr base 15 °C | 240| 188| 239| 395| 410| 450| 410| 443| 467| 314| 317| 272| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1728| 1447| 2168| 3197| 4623| 5777| 6361| 5947| 4984| 4313| 3151| 2381| HD-Hr base 18 °C | 422| 335| 401| 528| 469| 460| 419| 488| 538| 392| 447| 427| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 516| 507| 282| 66| 2| 0| 0| 0| 4| 36| 149| 313| CD-Hr base 24 °C | 288| 248| 167| 60| 7| 0| 0| 0| 12| 40| 115| 189| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 275| 267| 129| 19| 0| 0| 0| 0| 1| 9| 57| 155| CD-Hr base 27 °C | 173| 156| 95| 26| 0| 0| 0| 0| 6| 16| 58| 119| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2| 2| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 4| 6| 2| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 0| 0| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.7| 13.0| 12.1| 10.7| 9.4| 8.0| 7.3| 7.5| 8.3| 9.2| 10.6| 11.6| Average Wet Bulb Temp (WB) | 1.0| 0.9| 0.8| 0.8| 0.7| 0.7| 0.6| 0.6| 0.7| 0.6| 0.9| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.37% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 38.0| 37.7| 34.7| 29.0| 22.2| 17.0| 16.3| 19.0| 23.1| 27.9| 32.5| 35.3| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 34.8| 35.1| 32.0| 27.0| 20.6| 15.6| 15.1| 17.6| 20.7| 24.6| 29.0| 32.4| Design maximum DB | 20.0| 20.8| 18.3| 16.1| 13.7| 11.3| 10.6| 11.0| 12.9| 15.0| 17.0| 17.6| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6.0| 6.3| 5.1| 3.7| 1.7| 0.7| 0.5| 1.3| 1.7| 1.7| 3.1| 5.2| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.44% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.1| 20.0| 18.9| 16.7| 15.3| 13.3| 12.5| 12.8| 14.7| 16.9| 18.4| 19.1| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.5| 19.3| 18.0| 16.2| 14.7| 12.8| 11.8| 12.2| 13.8| 15.5| 17.6| 18.2| Design maximum WB | 16.2| 16.5| 15.5| 14.0| 12.6| 10.5| 9.7| 9.9| 10.8| 12.2| 13.6| 14.6| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 5.3| 5.6| 4.7| 3.2| 1.4| 0.4| 0.2| 0.8| 1.3| 1.3| 2.6| 4.6| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|