Energy Calculations And Registers E8, E9, E10 And E11 - Kamstrup MULTICAL 803 Technical Description

7.1.5

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
a suitable basis for calculation of volume-based average temperatures of inlet and outlet.
E10 and E11 function in the same way as E8 and E9, but are used for the calculation of the average temperature t3
with either V1 or V2.
E8, E9, E10 and E11 can be used for average calculation during any period of time as long as the volume register is
read at the same time as the energy registers.
E8 = V1[m
E8 is increased by the product of m
E10 = V1[m
E11 is increased by the product of m
Resolution of E8, E9, E10 and E11
E8, E9, E10 and E11 depend on the resolution of
volume [m ]
3
Example 1: Within a year, a heating installation has used 250.00 m
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
2019.06.01
2018.06.01
Yearly
consumptio
n
Kamstrup A/S · Technical description · 5512-2360_A1_GB_02.2019
] x t1
3
3
for V1 x t1
] x t3
3
3 for V1 x t3
Volume E8
534.26 m 3 48236
3
236.87 m 20123
297.39 m 3 28113
E9 = V1[m
E9 is increased by the product of m
E11 = V2[m
E11 is increased by the product of m
Volume resolution
3
0000.001 m
00000.01 m 3
000000.1 m 3
0000001 m 3
3 district heating water and the average
Average of
E9
inlet
18654
7651
28113/297.39
= 94.53 °C 11003
Table 3
MULTICAL® 803
x °C, which makes E8 and E9
3
] x t2
3
3
for V1 x t2
] x t3
3
3
for V2 x t3
E8, E9, E10 and E11
resolutions
x °C x 10
m 3
x °C
m 3
x °C x 0.1
3
m
x °C x 0.01
m 3
Average of
outlet
11003/297.39
= 36.99 °C
105