STIEBEL ELTRON Heat pumps, Technical Manual

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ExpEndItUrE of EnErgy valUES of HEat pUmpS
EnEV – calculation to DIN V 4701-10
the eneV provides three possible
certification processes:

Diagram process
 tabular process
 Detailed process
For the detailed certification process,
verification can be provided using
standard values or manufacturer's
details. Generally, the certification
process with standard values is
sufficient for heat pumps, since their
high efficiency level allows results to
fall below the required expenditure of
energy value.
where better expenditure of energy
values are demanded by more
stringent subsidy stipulations, e.g.
KFw 40 or KFw 60, these may possibly
be achieved with verification based on
the manufacturer's details.
it programs or the calculation process
of the eneV should be applied where
manufacturer's details are to be used.
For calculating the ep figure, stiebel
eltron offers the software "energy
efficiency in residential buildings".
where the certification utilises the
tabular process, draw the expenditure
of energy value eg from the
Din V 4701-10 according to "table
C3-4c expenditure of energy value eg
and drive auxiliary energy qg, He for
heat pumps with electric drive".
Electrically operated heating heat pumps
the heat generation expenditure of energy value is calculated using the annual
performance factor in accordance with the following equation:
e
H,g
= 1 : β
HP
e
H,g
= expenditure of energy value for the heat pump
β
HP
= seasonal performance factor of the heat pump, calculated subject to
type of heat pump
Brine | water heat pumps
the seasonal performance factor of brine | water heat pumps is calculated in
accordance with the following equation:
β
HP
=
ε
n
x F
ϑ
x F
∆
ϑ
β
HP
= Annual performance factor of heat pump
ε
n
= Coefficient of performance to en 14511 at b0/w35
F
ϑ
= Correction factor to table 5.3.7
F
∆
ϑ
= Correction factor to table 5.3.8
Water | water heat pumps
the annual performance factor of water | water heat pumps is calculated in
accordance with the following equation:
β
HP
=
ε
n
x F
ϑ
x F
∆
ϑ
β
HP
= Annual performance factor of heat pump
ε
n
= Coefficient of performance to en 14511 at w10/w35
F
ϑ
= Correction factor to table 5.3.7
F
∆
ϑ
= Correction factor to table 5.3.8
Air | water heat pumps
the annual performance factor of air | water heat pumps is calculated in
accordance with the following equation:
β
HP
= (
ε
n
(A-7/w35)
x F
ϑ
+
ε
n
(A2/w35)
x F
ϑ
2
+
ε
n
(A10/w35)
x F
ϑ
10
) x F
∆
ϑ
β
HP
= Annual performance factor of heat pump
ε
n
= Coefficient of performance to en 14511 at A-7/w35
ε
n
= Coefficient of performance to en 14511 at A2/w35
ε
n
= Coefficient of performance to en 14511 at A10/w35
F
ϑ
-7
= Correction factor to table 5.3.10
F
ϑ
2
= Correction factor to table 5.3.10
F
ϑ
10
= Correction factor to table 5.3.10
F
∆ ϑ
= Correction factor to table 5.3.8