Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(59) station Mt Lofty 24 years (1988-2011)| | BoM 23842 (WMO 95678) -34.98° latitude 138.71° longitude 685.0 m alt| | | |It is now 04-Jul-2013 04:49:19 -> computational time was 4 minutes| | OUTPUTS | | INPUTS => NEW33/59/ML_59_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/59/ML_59_DB.txt (Dry Design Day)| | B: CZ0606_NatHERS_1988-2011_w.txt => NEW33/59/ML_59_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/59/ML_59_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 30.9 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.49) => this Design DB was exceeded 9.9 days/year (incl std dev 4.5 days/year). 30.8 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 10.6 days/year (incl std dev 4.6 days/year). Design drybulb changes 10.9 °C per century (linear regression R² 0.55) ~> 36.3 °C mid century. 17.8 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.94) => this Design WB was exceeded 10.1 days/year (incl std dev 5.0 days/year). 17.8 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.1 days/year (incl std dev 5.0 days/year). Design wetbulb changes -2.2 °C per century (linear regression R²=-0.13) ~> 16.7 °C mid century. 2.9 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.85) => this Heating DB was insufficient 9.5 days/year (incl std dev 3.8 days/year). 2.2 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 10.1 days/year (incl std dev 4.2 days/year). Design heating changes 1.1 °C per century (linear regression R²=0.15) ~> 2.8 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 00:27 followed by maximum temperature at 16:55. Nighttime cooling rate 0.109 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at -6:17 ~ Max at 16:36 Nighttime cooling rate -0.044 °/hr from 19:48 to 06:47 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -3:59 ~ Max at 16:42 Nighttime cooling rate -0.006 °/hr from 19:42 to 06:50 (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 | | 30.9 DDB / 14.9 CWB | 24.7 CDB / 17.8 DWB | 2.9 DB | 5.4 DB| 28.0 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.37 % | 2.46 % | 4.07 % | 0.26 % | 0.81 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 2.59 % | 4.22 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.60 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=87) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7848| 31.4| 21.3| 10.1| 16:36| -6:17| |+/- 1180|+/- 0.8|+/- 4.1|+/- 4.1|+/-02:18|+/-08:28| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=85) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6597| 18.3| 12.9| 5.4| 16:42| -3:59| |+/- 1748|+/- 0.8|+/- 2.1|+/- 2.2|+/-05:24|+/-07:49| +/- 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 | | 31.6 / 17.9 | 32.5 / 18.2 || 2.1 | 2.5 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 30.8 DDB / 14.8 CWB | 24.4 CDB / 17.4 DWB | 2.4 DB | 0.4 % | 28.9 DDB / 14.1 CWB | 23.8 CDB / 16.3 DWB | 3.0 DB | 1.0 % | 27.1 DDB / 13.5 CWB | 23.0 CDB / 15.3 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| | 1653 | 2492 | 53 | 17 | mean annual degrees days |+/- 138 |+/- 161 |+/- 24 |+/- 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| | 1262 | 398 | 2 | 0 | mean annual degrees hours |+/- 573 |+/- 278 |+/- 7 |+/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.6| 16.9| 15.0| 12.4| 9.7| 7.4| 6.6| 7.1| 9.0| 10.8| 13.1| 14.8| Average Temperature (DB) | 1.8| 1.9| 1.5| 1.4| 0.9| 0.8| 0.6| 1.2| 1.2| 1.5| 1.9| 1.6| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1313| 1116| 1699| 2418| 3810| 5254| 5988| 5672| 4360| 3590| 2538| 1919| HD-Hr base 15 °C | 511| 444| 391| 615| 593| 584| 410| 873| 717| 753| 714| 558| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 2479| 2104| 3064| 4078| 5868| 7320| 8127| 7789| 6288| 5379| 4019| 3294| HD-Hr base 18 °C | 745| 667| 589| 794| 642| 588| 410| 893| 788| 900| 922| 738| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 403| 348| 165| 8| 0| 0| 0| 0| 1| 30| 115| 194| CD-Hr base 24 °C | 247| 260| 240| 23| 0| 0| 0| 0| 1| 76| 168| 160| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 152| 110| 37| 1| 0| 0| 0| 0| 0| 8| 31| 59| CD-Hr base 27 °C | 129| 113| 85| 3| 0| 0| 0| 0| 0| 33| 79| 68| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| NECD-Hr base 21 °C | 7| 1| 0| 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 | 1| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 10.7| 10.8| 9.8| 8.2| 6.9| 5.5| 4.6| 4.6| 5.7| 6.8| 8.3| 9.4| Average Wet Bulb Temp (WB) | 1.3| 1.3| 1.0| 1.0| 0.9| 0.9| 0.7| 1.1| 0.9| 1.3| 1.3| 1.1| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.11% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 32.9| 31.4| 28.6| 23.3| 18.1| 14.3| 12.9| 15.9| 21.2| 25.8| 28.2| 30.0| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 31.0| 30.4| 27.8| 22.4| 17.3| 12.5| 11.9| 15.2| 18.8| 23.4| 27.0| 28.9| Design maximum DB | 25.6| 26.1| 23.6| 18.8| 14.6| 10.7| 9.6| 11.6| 15.5| 18.8| 22.3| 23.5| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 6.6| 6.6| 5.9| 4.7| 3.4| 2.6| 1.9| 1.8| 2.0| 2.6| 4.0| 5.2| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.39% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 18.3| 17.7| 16.4| 13.8| 12.0| 10.3| 8.8| 9.6| 12.0| 14.3| 15.8| 17.1| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 17.5| 17.9| 15.8| 13.5| 11.7| 9.7| 8.5| 9.5| 11.1| 13.6| 15.6| 15.6| Design maximum WB | 15.9| 15.9| 13.9| 11.8| 10.6| 8.7| 7.4| 7.7| 9.3| 11.4| 13.3| 14.0| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 4.2| 4.6| 4.0| 2.7| 1.9| 1.2| 0.6| 0.3| 0.6| 1.0| 2.2| 3.2| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|