Thornleigh Passivhaus

February was definitely summer but very overcast with much higher humidity and overnight temperatures than other months in recent memory (median temperature 21.7 °C). The HRV was in the cooling season and we were often not able to cool the house by openning the windows in the evening / night as the overnight temperature didn't drop far enough. The split system was cooling during peak solar production and even overnight when the temperature did not drop. Outside temperatures ranged from 14 to 38 °C, while inside we were a comfortable 20 to 25 °C. The month was quite overcast which decreased our solar production... and running the A/C overnight resulted in higher energy consumption relative to last year. Temperature from inside and outside the house as the percentage of hours in 0.5 °C bins. I've scaled the temperature in hope that I will be able to use the temperature range for all months. Methods:  I have taken the 5 minutely data from the wirelessTag sensors and calculat...

January was definitely summer but very overcast with much higher humidity and overnight temperatures than other months in recent memory (median temperature 22.3 °C). The HRV was in the cooling season and we were often not able to cool the house by openning the windows in the evening / night as the overnight temperature didn't drop enough. The split system was cooling during peak solar production and even overnight when the temperature did not drop. Outside temperatures ranged from 15 to 38 °C, while inside we were a comfortable 21.6 to 25.9 °C. The month was quite overcast which decreased our solar production... and running the A/C overnight resulted in higher energy consumption relative to last year. Temperature from inside and outside the house as the percentage of hours in 0.5 °C bins. I've scaled the temperature in hope that I will be able to use the temperature range for all months. Methods:  I have taken the 5 minutely data from the wirelessTag sensors and calculate...

Decembers's weather was definitely summer but not super hot (median temperature 21.4 °C). The HRV was in the cooling season and we openned the windows a fair bit in the evening / night when it was cool out, and the split system was typically cooling during peak solar production. Outside temperatures ranged from 14 to 42 °C, while inside we were a comfortable 19.7 to 25.1 °C. The last half of the month was quite overcast which decreased our solar production... and with six of us for the holidays energy consumption was up relative to last year when we were away for the last half of the month. Temperature from inside and outside the house as the percentage of hours in 0.5 °C bins. I've scaled the temperature in hope that I will be able to use the temperature range for all months. Methods:  I have taken the 5 minutely data from the wirelessTag sensors and calculated the median temperature for each hour and determined the proportion of hours falling inside of the 20 - 25 °C ta...

I'ver splashed out and picked up a pair of Purple Air Flex air quality monitors. These sensors measure temperature, humidity, pressure, PM2.5 concentrations, and total volatile organic compounds (VOC). (The VOC readings are currently experimental.) The sensor outside data are publically viewable on the purple air map , but the inside sensor data is not disclosed in real time. I will however be doing some experiments with it. One of these days I'll find the ideal sensor package, but until then I just keep collecting!

November's weather was more spring like (median temperature 19.3 °C). The HRV was mostly in the cooling season and we openned the windows a fair bit in the evening / night when it was cool out, and the split system was typically cooling during peak solar production. At the end of the month when we had significant rain the dehumidifier ran for a week or so during the day to help dry clothes. Outside temperatures ranged from 10 to 34 °C, while inside we were a comfortable 20.1 to 24.7 °C. Temperature from inside and outside the house as the percentage of hours in 0.5 °C bins. I've scaled the temperature in hope that I will be able to use the temperature range for all months. Methods:  I have taken the 5 minutely data from the wirelessTag sensors and calculated the median temperature for each hour and determined the proportion of hours falling inside of the 20 - 25 °C target temperature (using the R functions 'aggregate' and 'hist'). Inside includes data from...

We had about 20 people visit. Thanks to Andy from Envirotecture , and Trent from Red Cedar Constructions  who were on hand to help with the specialist questions.   The next IPHA Open Days are November 10 - 12th .

October's weather alternated between summer and winter with very little time near the average (median temperature 17.3 °C, but low of 8 °C and a high of 36 °C). The HRV flipped between neutral and cooling seasons, and the split system on sparatically cooling during peak solar production. Outside temperatures ranged from 8 to 36 °C, while inside we were a comfortable 18.6 to 24.5 °C. Temperature from inside and outside the house as the percentage of hours in 0.5 °C bins. I've scaled the temperature in hope that I will be able to use the temperature range for all months. Methods: I have taken the 5 minutely data from the wirelessTag sensors and calculated the median temperature for each hour and determined the proportion of hours falling inside of the 20 - 25 °C target temperature (using the R functions 'aggregate' and 'hist'). Inside includes data from the wirelessTag sensors spread across nearly every room of the house. Outside is the data from the wirele...