tisdag 18 november 2014

points for the

points for the calculation are given in a table at page 24 in LOT 10 Annex II. The heat pump is tested according to EN 14511 and CEN/TS 14825 for part load conditions.  
The heat pump is a variable capacity heat pump, but since the heat pump is not tested at exactly the required heat effect (within ±3%), the calculations of COP has to be performed in accordance with a staged capacity unit.  
At -15°C and -7°C the delivered capacity from the heat pump is lower than the house requires; capacity and COP data are taken from operation in full load at these outdoor temperatures. An exception from the standard is made, since the standard proposes a recalculation of the COP at those points. The recalculation does not seem to make sense and is therefore ignored

Inga kommentarer:

Skicka en kommentar