2021 July
Winter is here, and so is lockdown version 2.0. In July the split system ran as a heater for most of the month from ~9:45am until 3:30pm, scheduled to take advantage of the solar production during that part of the day. On cooler nights we kept it on set to 19 °C. The HRV is working well and doing a great job of keeping the house in the comfort zone, although the gound floor is consistently a few degrees cooler than the top floor. During July we were all at home in our second significant COVID lockdown (and going a bit crazy).
| Inside / Outside | % < 20 °C | % 20 - 25 °C | % > 25 °C |
|---|---|---|---|
| inside | 39% | 61% | 0% |
| outside | 99% | 1% | 0% |
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 12 wirelessTag sensors spread across every room of the house. Outside is the data from the wirelessTag sensors outside near the cubby house and HRV intake. The water wall and door data are not included.
| Inside / Outside | Min | 5% | 25% | Median | 75% | 95% | Max |
|---|---|---|---|---|---|---|---|
| inside | 17 | 18 | 19 | 20 | 21 | 23 | 24 |
| outside | 0 | 4 | 8 | 11 | 13 | 17 | 24 |
Methods: I have taken the 5 minutely data from the wirelessTag sensors and calculated the median temperature for each hour and determined the indicated quantiles for each sensor (using the R functions 'aggregate' and 'quantile'). Inside includes data from 12 wirelessTag sensors spread across every room of the house. Outside is the data from the wirelessTag sensors in the cubby house, outside, and HRV intake. The water wall and door data are not included.
Monthly electricity data. We generated 306kWh, we used 507kWh, so we were net energy users for the month (4.3kWh/day). Because we don't have batteries, we exported 163.6kWh and imported 296.5kWh. We used more enegy than last year (506kWh vs. 485kWh last year), but we made a little more this year (373kWh vs. 360kWh).
