Kamstrup MULTICAL 603 - Energy Calculations and Registers E8, E9, E10 and E11

MULTICAL®603

KamstrupA/S∙Technicaldescription∙5512‐2029
_
A1_GB
_
06.2017
95

7.1.2 EnergycalculationsandregistersE8,E9,E10andE11
E8andE9areusedasabasisforcalculatingthevolume‐basedaveragetemperaturesofinletandoutletrespectively.
Witheveryintegration,theregistersareaccumulatedbytheproductofm
3
xC,whichmakesE8andE9asuitable
basisforthecalculationofvolume‐basedaverageinletandoutlettemperatures.
E10andE11functioninthesamewayasE8andE9,butareusedforcalculatingtheaveraget3ineitherV1orV2.
E8,E9,E10and
E11canbeusedfortheaveragecalculationduringanyperiodoftimeaslongasthevolumeregister
isreadatthesametimeastheenergyregisters. 

E8=m
3
xt1
E8isincreasedbytheproductofm
3
xt1

E9=m
3
xt2
E9isincreasedbytheproductofm
3
xt2

E10=V1(m
3
)xt3 
E11isincreasedbytheproductofm
3
forV1

xt3

E11=V2(m
3
)xt3 
E11isincreasedbytheproductofm
3
forV2

xt3


ResolutionofE8,E9,E10andE11 

E8,E9,E10andE11depe nd onthevolumeresolution
(m3)


Volumeresolution
E8,E9,E10andE11
resolutions

0000.001m
3

m
3
xCx10

00000.01m
3

m
3
xC

000000.1m
3

m
3
xCx0.1

0000001m
3

m
3
xCx0.01

Example1:Withinayearaheatinginstallationhasused250.00m
3
districtheatingwaterandtheaveragetemperatures
havebeen95Cininletand45Cinoutlet.
E8=23750andE9=11250.

Example2:Theaveragetemperaturesaretobemeasuredtogetherwiththeyearlyreading.Therefore,E8andE9are
includedintheyearlyreading.
Reading
date
Volume E8
Averageof
inlet
E9
Averageof
outlet
2017.06.01 534.26m
3
 4823618654
2016.06.01 236.87m
3
 201237651
Yearly
consumptio
n
297.39m
3
 28113
28113/297.39
=94.53C
11003
11003/297.39
=36.99C
Table4
 