Kamstrup MULTICAL 603 - Measurement of a Heat Pumps Coefficient of Performance; Coefficient of Performance

MULTICAL®603
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KamstrupA/S∙Technicaldescription∙5512‐2029
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A1_GB
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06.2017
97
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7.2 Measurementofaheatpump'scoefficientofperformance
7.2.1 CoefficientofPerformance(CP)
Inhouseswithheatpumps,withacommonheatcircuit,itisappropriatetomeasureboththereleasedthermalenergy
andthegainedelectricalenergy,bas edonwhichthecoefficientofperformance(COPorCP)canbecalculated.CPis
theabbreviationof“CoefficientOfPerformance”.
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Thecalculationisbasedonsimpleproportionalnumbersbetweenthecalculatedthermalenergy(E1)andtheelectrical
energy,whichismeasuredviapulseinputB(In‐B1):
 
  󰇟1󰇠
  󰇟 1󰇠
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Theelectricalenergy(In‐B1)isalwaysregisteredinkWhorMWh,whereasthethermalenergy(E1)iseitherregistered
inkWh,MWh,GcalorGJdependingontheselectedB‐code.Nomatterwhichunityou choose,themetercalculates
CPcorrectly.TheCPvalueisdisplayedwithone
decimalandisavalueintheinterval0.0…19.9.
TheCPvaluecanbedisplayed,respectively,asacurrentvalue,amonthlyvalueorayearlyvalue(SCOP,Seasonal
CoefficientOfPerformance).Inaddition,theaveragingperiodofthecurrentCPvalueaswellasthecurrentpower
measuredat
pulseinputB1canbedisplayed.
CurrentCPisaveragedoveranumberofdaysandnightsselectedinthemeter’sconfiguration.Theaveragingperiod
canbeselectedintheinterval5…30daysandnights.Theaveragingperiodissetat7daysandnights,unless
otherwisestatedbythecustomer.
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Note:IfdataofE1orIn‐B1ismissingforaloggingperiod,thecurrentCPisdisplayedas0.0untilthedatabasisis
sufficient.
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CPdisplayrea dings 
ThetablebelowshowstheCPreadingsintheTECHloop.
Primaryreading
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Secondary
reading
Displayno.
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Displayreading 
CP
(movingaverage)
 2‐023‐00
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 Current
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power
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ofIn‐B1
2‐023‐01
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 Averaging
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period
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ofCP
2‐023‐02
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 Yearly
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date
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2‐023‐03
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