2008-02-14

Last edit

Changed:

< 2008-02-21: No wind; house at 21°C, outdoor -8°C; 9-minute burn every 2 hours.

to

> 2008-02-21:
> * Evening: no wind; house at 21°C, outdoor -8°C; 9-minute burn every 2 hours.
> * Overnight: average outdoor -9°C, two 9 minute burns
> * Morning: 29-minute, 12-minute, 10-minute burn totalling 51 minutes
> "Overnight and Morning" burns are in minutes.
> || '''Date''' || '''Outdoor °C''' || '''Wind''' || '''Overnight''' || '''Morning''' ||
> ||2008-02-14|| +6|| 20|| none|| 2, total 30||
> ||2008-02-18|| +9|| 4|| none||1, total 8||
> ||2008-02-22|| -9|| 0|| 2 x 9||3, total 51||

Furnace nozzle = 1.0 US GPH = 3.785L/h @ 0.97$/L = 3.7$/h

2008-02-14: Overnight outdoor temperature 6°C, wind avg 20km/h

The furnace didn't come on overnight.
At 5:45 it came on for 20 minutes, cycled off, then came back on for about 8 minutes, making a 30-minute burn to go from 19° to 21°. 30 min = $1.85 to warm up the house in the morning.

2008-02-18: Overnight outdoor temp 11°C - 7°C. Wind avg 4km/h, gusting to 30.

Furnace didn't come on overnight
5:45: Burner: 0.17h --> 8-minute --> $0.61

2008-02-21:

Evening: no wind; house at 21°C, outdoor -8°C; 9-minute burn every 2 hours.
Overnight: average outdoor -9°C, two 9 minute burns
Morning: 29-minute, 12-minute, 10-minute burn totalling 51 minutes

"Overnight and Morning" burns are in minutes.

Date	Outdoor °C	Wind	Overnight	Morning
2008-02-14	+6	20	none	2, total 30
2008-02-18	+9	4	none	1, total 8
2008-02-22	-9	0	2 x 9	3, total 51