13
The electrical storage water heater
D15-15VDO / D15-15VDU
of the company
Midea
was tested
with a declared load profile of the size
that correspond to the water heating efficiency class
The product fulfills and corresponds to the requirements of the commission regulation standards (No
814/2013) for electrical storage water heater and achieved a water heating energy efficiency of
In accordance with Annex
Ⅱ
Enercy Efficiency Classes article 1 of the commission regulation (No
812/2013)
The evaluation of the result of this report with respect of conformity with the related commission
regulation (No 812/2013 and 814/2019) is only a part of the conformity assessment to achieve the
ErP-Label.
Electricity consumption
Q
elec
、
water heating energy efficiency
η
wh
and mixed water at 40
℃（
V40
）
“XXS”
“B”
η
wh
=35%
kWh
kWh
kWh
kWh
kWh
℃
℃
kg
L
kWh
kWh
℃
℃
℃
℃
L
L
Description
Parameter
Value
Unit
k-Value
k
Smart control compliance
smart
Smart control factor
SCF
Conversion coefficient
CC
Ambient correction term
Q
cor
Referenct energy
Q
ref
Useful energy content
Q
H2O
Correction ratio of reference and useful energy
Q
ref/
Q
H2O
Daily electricity consumption (measured)
Q
test_elec
Water temperature at the beginning of the 24h measurement cycle
T3
Water temperature at the end of the 24h measurement cycle
T5
Storage volume
M
act
Storage volume
C
act
Daily electricity consumption (corrected)
Q
elec
Water heating energy efficiency
η
wh
Annual Electricity Consumption
AEC
Water heating energy efficiency class
Water temperature without tapping
T
set
Average water temperature of outlet warm water
θ
'
p
Average water temperature of inlet cold water
θ
c
Normalised value of the average temperature
θ
p
Volume that delivered water of at least 40
℃
V
40exp
Calculated volume that delivered hot water of at least 40
℃
V
40
0.23
0
0
2.5
-0.208
2.1
2.134
0.984
2.478
49.6
48.3
15.6
15.6
2.462
35.3
522
A
50
49.2
10.6
49.2
12
16
