Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB(54) station Mandurah 24 years (1988-2011)| | BoM 9977 (WMO 94605) -32.52° latitude 115.71° longitude 3.5 m alt| | | |It is now 04-Jul-2013 04:19:08 -> computational time was 4 minutes| | OUTPUTS | | INPUTS => NEW33/54/MD_54_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/54/MD_54_DB.txt (Dry Design Day)| | B: CZ0508_NatHERS_1988-2011_w.txt => NEW33/54/MD_54_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/54/MD_54_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 36.2 °C Design DB = mean of 10th highest 3PM each year + (std dev * 1.09) => this Design DB was exceeded 10.1 days/year (incl std dev 3.8 days/year). 36.5 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 8.7 days/year (incl std dev 3.5 days/year). Design drybulb changes -7.5 °C per century (linear regression R² -0.40) ~> 32.7 °C mid century. 22.1 ° Design WB = mean of 10th highest 3PM each year + (std dev * 2.11) => this Design WB was exceeded 9.6 days/year (incl std dev 4.9 days/year). 22.1 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.3 days/year (incl std dev 5.0 days/year). Design wetbulb changes 1.6 °C per century (linear regression R²=0.16) ~> 22.9 °C mid century. 6.5 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 0.97) => this Heating DB was insufficient 9.9 days/year (incl std dev 4.6 days/year). 4.9 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.1 days/year (incl std dev 4.8 days/year). Design heating changes 16.7 °C per century (linear regression R²=0.80) ~> 13.2 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 04:31 followed by maximum temperature at 15:05. Nighttime cooling rate 0.414 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 04:56 ~ Max at 15:24 Nighttime cooling rate 0.642 °/hr from 19:50 to 06:47 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -1:07 ~ Max at 16:12 Nighttime cooling rate 0.480 °/hr from 19:53 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 | | 36.2 DDB / 19.2 CWB | 28.2 CDB / 22.1 DWB | 6.5 DB |12.6 DB| 29.7 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.23 % | 4.73 % | 5.04 % | 0.29 % | 0.67 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 4.84 % | 5.20 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.51 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=110) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7715| 36.4| 21.0| 15.5| 15:24| 04:56| |+/- 1273|+/- 0.9|+/- 2.8|+/- 2.7|+/-01:06|+/-04:23| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=133) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 6781| 22.3| 17.3| 5.0| 16:12| -1:07| |+/- 1767|+/- 0.8|+/- 1.9|+/- 1.9|+/-03:54|+/-09:24| +/- 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 | | 36.1 / 22.3 | 37.4 / 22.6 || 5.2 | 7.9 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 35.3 DDB / 19.1 CWB | 28.0 CDB / 21.9 DWB | 5.8 DB | 0.4 % | 33.2 DDB / 18.8 CWB | 27.2 CDB / 21.0 DWB | 7.1 DB | 1.0 % | 31.3 DDB / 18.3 CWB | 26.7 CDB / 20.3 DWB | 8.2 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 289 | 717 | 193 | 82 | mean annual degrees days |+/- 87 |+/- 133 |+/- 45 |+/- 24 | +/- 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| | 4642 | 1966 | 78 | 3 | mean annual degrees hours |+/- 1089 |+/- 577 |+/- 95 |+/- 7 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 23.2| 23.6| 22.1| 19.2| 16.4| 14.2| 13.4| 13.8| 14.9| 16.6| 19.3| 21.6| Average Temperature (DB) | 1.0| 1.4| 1.0| 0.9| 1.1| 0.9| 0.9| 1.0| 0.9| 1.1| 1.0| 1.3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 56| 25| 75| 205| 673| 1197| 1524| 1338| 925| 633| 219| 70| HD-Hr base 15 °C | 77| 37| 71| 111| 339| 457| 553| 509| 365| 319| 150| 55| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 229| 158| 324| 724| 1705| 2663| 3270| 2988| 2330| 1681| 768| 377| HD-Hr base 18 °C | 167| 138| 191| 240| 570| 603| 672| 686| 525| 525| 331| 177| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1217| 1237| 834| 213| 14| 0| 0| 0| 5| 68| 303| 751| CD-Hr base 24 °C | 400| 490| 256| 161| 20| 0| 0| 0| 10| 53| 147| 349| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 562| 575| 323| 55| 1| 0| 0| 0| 0| 16| 105| 329| CD-Hr base 27 °C | 250| 292| 137| 66| 2| 0| 0| 0| 0| 18| 66| 183| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20| 36| 13| 3| 0| 0| 0| 0| 0| 0| 0| 7| NECD-Hr base 21 °C | 36| 62| 17| 8| 0| 0| 0| 0| 0| 0| 0| 19| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 2| 0| 0| 0| 0| 0| 0| 0| 0| 0| 1| NECD-Hr base 24 °C | 1| 6| 0| 1| 0| 0| 0| 0| 0| 0| 0| 3| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 16.4| 16.7| 15.9| 14.6| 12.8| 11.2| 10.7| 11.0| 11.6| 12.5| 14.0| 15.2| Average Wet Bulb Temp (WB) | 0.6| 1.2| 1.1| 0.9| 1.0| 1.0| 0.9| 1.1| 1.0| 0.9| 0.7| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 5.65% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 37.8| 37.6| 35.5| 30.9| 25.8| 21.8| 20.5| 21.1| 23.7| 29.2| 33.7| 36.6| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 36.3| 35.9| 33.5| 29.8| 24.7| 20.8| 19.6| 20.1| 22.8| 26.7| 31.0| 35.0| Design maximum DB | 23.7| 24.5| 23.3| 20.7| 19.1| 17.1| 16.3| 15.9| 16.2| 17.6| 19.7| 22.4| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 11.2| 12.9| 11.2| 9.0| 7.1| 5.6| 5.0| 4.8| 6.2| 7.0| 9.5| 11.3| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 3.24% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 22.2| 22.7| 22.0| 20.8| 19.3| 17.2| 16.4| 16.5| 16.7| 18.6| 19.9| 21.4| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 21.7| 22.3| 21.5| 20.1| 18.7| 16.9| 15.7| 16.0| 16.5| 18.4| 19.2| 20.9| Design maximum WB | 19.6| 20.3| 19.9| 18.0| 17.2| 15.1| 14.3| 14.4| 14.2| 15.9| 17.5| 18.5| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 8.0| 9.8| 8.8| 7.3| 5.8| 4.4| 3.9| 3.8| 5.0| 5.5| 7.1| 8.5| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|