Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(78) station Sub-Alpine (Cooma Airport) 21 years (1991-2011)| | BoM 70217 (WMO 94921) -36.29° latitude 148.97° longitude 931.0 m alt| | | |It is now 04-Jul-2013 06:40:14 -> computational time was 3 minutes| | OUTPUTS | | INPUTS => NEW33/78/SU_78_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/78/SU_78_DB.txt (Dry Design Day)| | B: CZ0704_NatHERS_1991-2011_w.txt => NEW33/78/SU_78_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/78/SU_78_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 32.5 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.32) => this Design DB was exceeded 10.1 days/year (incl std dev 3.9 days/year). 32.8 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.3 days/year (incl std dev 3.4 days/year). Design drybulb changes 5.3 °C per century (linear regression R² 0.19) ~> 35.4 °C mid century. 19.3 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.34) => this Design WB was exceeded 9.4 days/year (incl std dev 4.7 days/year). 19.3 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 9.4 days/year (incl std dev 4.7 days/year). Design wetbulb changes -3.6 °C per century (linear regression R²=-0.24) ~> 17.6 °C mid century. -6.1 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.69) => this Heating DB was insufficient 9.8 days/year (incl std dev 3.2 days/year). -7.3 ° 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 3.6 days/year). Design heating changes 3.6 °C per century (linear regression R²=0.23) ~> -5.5 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 03:60 followed by maximum temperature at 15:07. Nighttime cooling rate 0.477 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:51 ~ Max at 15:12 Nighttime cooling rate 0.835 °/hr from 19:47 to 06:51 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at 01:37 ~ Max at 15:12 Nighttime cooling rate 0.455 °/hr from 19:58 to 06:53 (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 | | 32.5 DDB / 15.8 CWB | 24.7 CDB / 19.3 DWB | -6.1 DB |15.8 DB| 38.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.27 % | 3.59 % | 4.27 % | 0.24 % | 0.42 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 3.71 % | 4.37 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.49 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=99) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 8015| 32.8| 12.5| 20.4| 15:12| 04:51| |+/- 1203|+/- 0.7|+/- 3.3|+/- 3.3|+/-01:06|+/-01:41| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=66) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 5796| 19.8| 13.1| 6.7| 15:12| 01:37| |+/- 2172|+/- 1.0|+/- 2.6|+/- 2.6|+/-03:18|+/-06:12| +/- 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 | | 32.7 / 19.3 | 33.9 / 20.0 || -6.8 | -3.2 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 31.8 DDB / 15.7 CWB | 24.2 CDB / 18.8 DWB | -6.1 DB | 0.4 % | 29.7 DDB / 14.8 CWB | 23.4 CDB / 17.7 DWB | -5.0 DB | 1.0 % | 27.6 DDB / 14.2 CWB | 22.5 CDB / 16.7 DWB | -3.6 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 2033 | 2861 | 63 | 24 | mean annual degrees days |+/- 93 |+/- 112 |+/- 27 |+/- 13 | +/- 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| | 1513 | 565 | 8 | 1 | mean annual degrees hours |+/- 653 |+/- 301 |+/- 24 |+/- 2 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.9| 17.0| 14.2| 10.1| 6.7| 4.4| 3.5| 4.9| 7.8| 10.5| 13.4| 15.7| Average Temperature (DB) | 1.5| 1.6| 1.1| 1.1| 0.8| 1.2| 0.5| 1.0| 1.0| 1.0| 1.7| 1.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 894| 952| 1976| 3794| 5880| 7213| 8120| 7176| 5101| 3741| 2387| 1559| HD-Hr base 15 °C | 374| 373| 404| 555| 549| 796| 386| 676| 585| 534| 644| 386| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1878| 1959| 3390| 5549| 7950| 9278|10258| 9286| 7016| 5490| 3812| 2804| HD-Hr base 18 °C | 547| 553| 526| 641| 567| 799| 386| 702| 646| 613| 808| 556| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 601| 363| 122| 6| 0| 0| 0| 0| 0| 16| 123| 281| CD-Hr base 24 °C | 287| 253| 130| 13| 0| 0| 0| 0| 0| 22| 140| 268| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 259| 138| 32| 0| 0| 0| 0| 0| 0| 1| 32| 102| CD-Hr base 27 °C | 156| 125| 52| 0| 0| 0| 0| 0| 0| 2| 55| 142| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 7| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 21 °C | 21| 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 24 °C | 2| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 12.6| 12.5| 10.3| 6.9| 4.4| 2.5| 1.4| 2.1| 4.4| 6.5| 9.1| 10.7| Average Wet Bulb Temp (WB) | 1.3| 1.2| 0.9| 1.1| 0.8| 1.0| 0.7| 1.0| 1.1| 0.9| 1.4| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 8.14% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 34.7| 32.2| 28.9| 23.8| 19.4| 15.6| 14.3| 17.6| 21.7| 25.5| 29.0| 31.8| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.6| 31.1| 27.5| 22.4| 18.0| 14.0| 12.8| 15.8| 20.1| 23.7| 27.4| 29.6| Design maximum DB | 16.8| 16.3| 14.1| 10.9| 8.9| 7.1| 5.6| 7.0| 9.4| 11.9| 13.7| 14.7| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2.6| 3.6| 0.4| -3.6| -6.0| -7.5| -8.3| -7.5| -5.5| -3.6| -0.9| 0.5| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 2.76% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.9| 19.5| 17.7| 14.4| 12.0| 9.9| 8.5| 9.9| 12.3| 14.8| 16.9| 18.6| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.5| 19.2| 17.6| 14.5| 11.9| 9.7| 8.1| 9.7| 12.6| 14.3| 16.7| 17.7| Design maximum WB | 16.4| 16.1| 14.4| 10.9| 9.3| 7.6| 5.4| 6.5| 8.9| 11.1| 13.5| 14.5| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1.5| 2.8| -0.2| -3.9| -6.3| -7.8| -8.6| -7.9| -5.9| -4.1| -1.6| -0.1| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|