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LOT 10
to je dokument koji daj eproizvođač o deklariranim kapacitetima i copovima za izračun scopa
rovac je stavljao tu neki dan lot10 od fujitsu
eto ga
http://www.diva-portal.org/smash/get/diva2:962563/FULLTEXT01.pdf
str44 
Lot 10
Air to air heat pumps
The design load of the house is chosen to 8,5kW, which is the design load that best 
corresponds to the size of the house in the field measurement. The house in the field is 
installed in a climate, similar to “colder” climate, therefore “colder” is chosen. The test poin
ts 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.
At +2°Cand +7°C the heat delivered from the heat pump exceeds the required heat from 
the house and is therefore operated in part load.
 COP for part load operation is 
interpolated by using the equation for staged capacity units at page 26 in the standard. At 
+2°C the interpolation is made between full load operation and operation at 47% part 
load, at +7°C the interpolation is made between part load operation at 57% and 44% of 
the heat pump capacity. 
The heat pump is not tested at +12°C. Full load operation at +12°C is extrapolated from 
test data at +7°C and +2°C. 50% part load is extrapolated from 50% part load operation at 
+7°C and +2°C. COP for the required effect is extrapolated by using this data. Each 
extrapolated COP value is corrected with a degradation 
factor of 0.975. 
Default values are used for the degradation factor (Cd=0.1), turndown ratio heating 
(=25%), thermostat off mode (50W), crankcase heater mode (=10W) and off mode 
(=10W). The bin limit is set to 
-20°C
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