PESHEAT2V01
2016-01-08
42
Annex A
Application type
Energy calculation formula
For closed or opens heating systems
A1
– For closed heating system with flow sensor in
return pipe or for open heating system for accounting
energy consumption for heating and hot water
preparation with cold water temperature measurement
and with two flow sensors, installed in flow and return
pipes for accounting of supplied heat energy
∑E = E1 + E2 *
E1=V2
2
(h
T1
-h
T2
)
E2=( V1
1
- V2
2
)
(h
T1
-h
T3
) *
M1 =V1
1
M2 =V2
2
A2
- For closed heating systems with flow sensor in
return pipe or for open heating system with two flow
sensors, installed in flow and replenishment pipes
for accounting of supplied heat energy
∑E = E1 + E2 *
E1=V1
2
(h
T1
-h
T2
)
E2= V2
3
(h
T1
-h
T3
)
M1 =V1
2
M2 =V2
3
For closed or opens heating systems
A4
- For closed heating systems with flow sensor in
return pipe or for open heating system with two flow
sensors, installed in flow and replenishment pipes for
accounting of supplied heat energy
∑E = E1 + E2 *
E1=( V1
1
– V2
3
)
(hat
1
-hat
2
) *
E2=V2
3
(hat
1
-hat
3
)
M1 =V1
1
M2 =V2
3
T3
T1
T2
A1
V2
p2
V3
V4
V1
p1
Ši
ld
ymo
k
at
ila
s
T1
T2
A2
V2
V1
T3
p2
V3
V4
p1
Ši
ld
ymo
k
at
ila
s
T2
A4
V2
V1
T3
p2
V3
V4
p1
T1
