Quote:
Originally Posted by AC_Hacker
Ormston,
A missing piece in our discussion is your local climate conditions.
Heating Degree Days will express this.
THIS _SITE can calculate the heating degree days (HDD) for your particular local. It would be most useful if this were expressed in Metric and also Imperial.
If you would like me to run the calcs for you, I'd be quite happy... I just need to know your location.
Best,
-AC |
AC Location is Hereford, UK
Last winter was remarkably warm, only a few days below freezing. We do struggle for heat when temperatures drop below freezing as the output of the ASHP drops to 2KW by that temp.
Celsius-based heating degree days for a base temperature of 15.5C
Month starting HDD % Estimated
2013-09-01 75 5
2013-10-01 106 4
2013-11-01 269 3
2013-12-01 277 2
2014-01-01 307 0.2
2014-02-01 257 0.1
2014-03-01 257 0.2
2014-04-01 172 0.03
2014-05-01 111 0.06
2014-06-01 48 0.03
2014-07-01 23 0.1
2014-08-01 56 0
Fahrenheit-based heating degree days for a base temperature of 65F
Month starting HDD % Estimated
2013-09-01 259 5
2013-10-01 337 4
2013-11-01 638 3
2013-12-01 656 2
2014-01-01 710 0.2
2014-02-01 606 0.1
2014-03-01 618 0.2
2014-04-01 462 0.03
2014-05-01 341 0.06
2014-06-01 183 0.03
2014-07-01 107 0.1
2014-08-01 219 0