Eric Laurentius Peterson, copyright 2013, by author- e.peterson@uq.edu.au) ___________________________________________________________________________ | Analysis of Australian Climate Data Bank (ACDB) version from NIWA 2013 | | ACDB( 4) station Carnarvon 45 years (1967-2011)| | BoM 6011 (WMO 94300) -24.89° latitude 113.67° longitude 8.0 m alt| | | |It is now 03-Jul-2013 22:59:50 -> computational time was 7 minutes| | OUTPUTS | | INPUTS => NEW33/4/CR_4_Table.txt (this print out)| | A: ACDB_in/NatH_CZ.csv => NEW33/4/CR_4_DB.txt (Dry Design Day)| | B: CZ0307_NatHERS_1967-2011_w.txt => NEW33/4/CR_4_WB.txt (Wet Design Day)| | C: ACDB33.m => NEW33/4/CR_4_CR.txt (Critical D Day)| | => NEW33/ACDB_Table1.txt (compare others)| |_________________________________________________________________________| ANALYSIS SUMMARY ___________________________________________________________________________ 38.4 °C Design DB = mean of 10th highest 3PM each year + (std dev * 2.58) => this Design DB was exceeded 10.1 days/year (incl std dev 3.6 days/year). 38.6 ° alternative Design DB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design DB was exceeded 9.7 days/year (incl std dev 3.5 days/year). Design drybulb changes 0.4 °C per century (linear regression R² 0.03) ~> 38.8 °C mid century. 25.8 ° Design WB = mean of 10th highest 3PM each year + (std dev * 1.99) => this Design WB was exceeded 10.0 days/year (incl std dev 6.1 days/year). 25.7 ° alternative Design WB = mean of 10th highest daily maximum each year + (1 std dev) => alternative Design WB was exceeded 10.0 days/year (incl std dev 6.1 days/year). Design wetbulb changes -0.7 °C per century (linear regression R²=-0.13) ~> 25.3 °C mid century. 7.8 ° Heating DB = mean of 10th lowest 8AM each year - (std dev * 1.01) => this Heating DB was insufficient 9.6 days/year (incl std dev 5.4 days/year). 7.1 ° alternative Heating Design = mean of 10th lowest daily minimum each year - (1 std dev) => alternative Heating Design was insufficient 9.0 days/year (incl std dev 4.5 days/year). Design heating changes -3.1 °C per century (linear regression R²=-0.37) ~> 5.2 °C mid century. __________________________________________________________________________ Diurnal patterns generally and coincident with design temperatures General average diurnal minimum temperature at 05:56 followed by maximum temperature at 14:38. Nighttime cooling rate 0.404 °/hr (average of all data). Diurnal pattern of days with 3PM DB ~ Design DB ~ Min at 05:04 ~ Max at 13:48 Nighttime cooling rate 0.535 °/hr from 19:57 to 07:35 (evenings following 3PM design conditions). Diurnal pattern of days with 3PM WB ~ Design WB ~ Min at -4:15 ~ Max at 16:12 Nighttime cooling rate 0.254 °/hr from 19:60 to 07:37 (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 | | 38.4 DDB / 20.2 CWB | 29.8 CDB / 25.8 DWB | 7.8 DB |11.3 DB| 30.6 DB| |_____________________|______________________|___________|_______|________| |percentage of hourly data exceeding levels |hours below| |design DB | coinc WB | coinc DB | design WB | design DB | | 0.19 % | 23.02 % | 5.14 % | 0.18 % | 0.28 % | |__________|__________|__________|___________|___________| |design DB & coinc WB | coinc DB % design WB | | 23.13 % | 5.20 % | |_____________________|______________________| | design DB concurrent with design WB | | 0.36 % | |____________________________________________| Coincident from 3PM DB within degree of DDB (n=95) _______________________________________________________ | dGHI | DBmax | DBmin | DBrng | HmaxDB | HminDB | | 7612| 40.0| 23.7| 16.3| 13:48| 05:04| |+/- 906|+/- 1.6|+/- 2.6|+/- 3.0|+/-01:06|+/-02:45| +/- standard deviation |________|________|________|________|________|________| Coincident from 3PM WB within degree of DWB (n=263) _______________________________________________________ | dGHI | WBmax | WBmin | WBrng | HmaxWB | HminWB | | 7217| 25.8| 21.6| 4.3| 16:12| -4:15| |+/- 1132|+/- 0.6|+/- 2.1|+/- 2.1|+/-03:18|+/-09:19| +/- 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 | | 37.9 / 25.7 | 39.7 / 25.9 || 7.6 | 10.9 | |________________________________________________||_______________________| ASHRAE design temperatures exclude 0.4% 1% and 2% of hours. ___________________________________________________________ | design DB / coinc WB | coinc DB / design WB | heating | | 36.8 DDB / 20.3 CWB | 29.6 CDB / 25.4 DWB | 8.2 DB | 0.4 % | 34.2 DDB / 20.8 CWB | 29.1 CDB / 24.7 DWB | 9.5 DB | 1.0 % | 32.3 DDB / 21.3 CWB | 28.6 CDB / 24.2 DWB | 10.7 DB | 2.0 % |_________________________________________________________| Degree day base temps 15 °C, 18 °C, 24 °C, and 27 °C. ____________________________________________________ |Heating DD15|Heating DD18|Cooling DD24|Cooling DD27| | 93 | 255 | 391 | 142 | mean annual degrees days |+/- 23 |+/- 38 |+/- 75 |+/- 40 | +/- 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| | 9396 | 3400 | 2334 | 158 | mean annual degrees hours |+/- 1805 |+/- 949 |+/- 910 |+/- 191 | +/- 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 | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 26.0| 27.3| 26.3| 23.8| 20.2| 17.4| 16.3| 17.3| 19.2| 21.0| 22.7| 24.4| Average Temperature (DB) | 1.1| 1.2| 1.0| 0.8| 1.0| 0.7| 0.8| 0.9| 0.7| 0.8| 1.0| 0.9| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 0| 6| 161| 525| 829| 534| 158| 26| 1| 0| HD-Hr base 15 °C | 0| 0| 1| 12| 118| 220| 283| 223| 75| 26| 2| 0| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 0| 0| 5| 50| 573| 1361| 1887| 1385| 614| 209| 39| 3| HD-Hr base 18 °C | 1| 0| 11| 53| 277| 339| 408| 362| 178| 115| 36| 5| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 1776| 2285| 2027| 889| 309| 60| 27| 48| 116| 258| 546| 1055| CD-Hr base 24 °C | 623| 693| 578| 319| 164| 46| 29| 48| 99| 185| 300| 382| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 653| 989| 819| 252| 70| 5| 2| 5| 33| 78| 173| 321| CD-Hr base 27 °C | 373| 460| 354| 156| 62| 7| 5| 10| 38| 77| 132| 193| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 530| 868| 595| 146| 19| 1| 1| 0| 0| 1| 18| 155| NECD-Hr base 21 °C | 354| 429| 290| 124| 22| 2| 4| 0| 1| 2| 28| 133| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 33| 90| 31| 2| 0| 0| 0| 0| 0| 0| 0| 3| NECD-Hr base 24 °C | 65| 122| 35| 5| 0| 0| 0| 0| 0| 0| 1| 11| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 20.7| 21.7| 20.6| 18.4| 15.2| 13.1| 12.2| 12.7| 13.9| 15.5| 17.2| 19.1| Average Wet Bulb Temp (WB) | 0.8| 0.9| 0.9| 1.0| 1.4| 1.1| 1.0| 0.9| 0.7| 0.8| 0.9| 0.8| +/- standard deviation |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Dry Design Day => 6.61% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 38.8| 40.3| 39.0| 34.4| 31.5| 27.7| 26.8| 27.7| 31.2| 33.2| 35.7| 37.6| Maximum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 35.6| 38.5| 37.0| 33.0| 30.1| 26.7| 25.3| 26.3| 28.2| 29.9| 31.9| 33.1| Design maximum DB | 25.9| 27.2| 26.0| 23.5| 20.6| 18.7| 17.3| 17.4| 18.7| 20.0| 22.0| 24.0| Design minimum DB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 19.3| 20.1| 17.9| 14.7| 10.1| 7.6| 6.3| 7.5| 9.5| 12.4| 15.1| 17.5| Minimum Temperature (DB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| Wet Design Day => 4.17% from hour/month bins _________________________________________________________________________ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.1| 25.9| 25.4| 23.8| 22.2| 20.4| 19.4| 19.5| 19.6| 20.8| 22.1| 23.9| Maximum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 25.0| 25.9| 24.9| 23.2| 21.4| 19.1| 18.4| 18.3| 18.7| 20.2| 21.6| 23.3| Design maximum WB | 23.4| 24.4| 23.4| 21.5| 19.4| 17.4| 16.2| 16.0| 16.6| 18.2| 19.8| 21.7| Design minimum WB |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____| | 13.4| 14.3| 11.9| 9.6| 6.2| 4.6| 3.6| 4.3| 5.1| 7.1| 9.6| 12.0| Minimum Temperature (WB) |_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|_____|