Cool storage in private homes
(Opbevaring på køl i private hjem)
|
Denmark
2002 |
Process description
The present data refer cool storage in modern household
refrigerators and freezers in Denmark. The considered refrigerators are build-in type and do
not provide other functions than cooling. All considered freezers are
up-right type and do not provide other functions than freezing.
Data collection and treatment
Producers of cooling
equipment for private households provide information about electricity
consumption per year as well as capacity in terms of internal storage volume. This
information has been collected by
NVE
for a
number of brands and put together in at table in order to identify energy
marks for various products available in the Danish market.
The electricity consumption for a given product Ep
can be
roughly estimated by following formula:
Ep = Ed/SC × 100%/u × Vp
× t
Where
Ed is the electricity consumption of the refrigerator or
freezer (kWh
per day)
SC is the storage capacity of the refrigerator or
freezer (litres)
u is the degree of utilisation of the refrigerator (%)
Vp is the volume of the considered product (litres)
t is the time of the storage (days) and
Ed/SC
= Evd (the daily electricity consumption
per l storage capacity, wh per liter per day).
Technical scope
Electricity consumption for maintaining the cool is included.
Cooling from room temperature to storage temperature has not been
taken into account.
Saving of house
heating during winter time due to
heat production from the cooling aggregate
has not been
taken into account. Other inputs and
outputs have not been included.
Representativity
Energy consumption for
cool storage in private households
has decreased significantly during the last decades and
since the data are derived from new equipment (2002) the present data are
only representative to new equipment. The data do only represent a small
selection of equipment with different capacity and energy mark.
Validation
Electricity consumption for cool storage per unit of stored product
is determined by five
main factors: the storage temperature and room temperature, the daily
praxis
of the user, the applied cooling
technology, the condition of the equipment and the
utilisation of the cooling capacity and electricity
consumption can vary a lot depending on the actual conditions. The
present the data are measured under standard conditions
and do only provide an order of magnitude of electricity consumption.
Electricity consumption
Electricity consumption and storage capacity of various refrigerators and
freezers available in the Danish market in 2002.
| |
Energy mark |
Storage
Capacity, SC |
Electricity consumption,
Ed kWh per day |
Electricity consumption,
Evd
Wh per litre per day |
| Refrigerators |
A |
145 |
0.39 |
2.7 |
| B |
146 |
0.57 |
3.9 |
| C |
146 |
0.65 |
4.5 |
| A |
251 |
0.45 |
1.8 |
| B |
257 |
0.59 |
2.3 |
| C |
255 |
0.70 |
2.7 |
| |
|
|
|
| Freezers |
A |
95 |
0.57 |
6.0 |
| B |
94 |
0.77 |
8.2 |
| C |
90 |
0.90 |
10 |
| D |
93 |
1.03 |
11 |
| A |
263 |
0.82 |
3.1 |
| B |
263 |
1.11 |
4.2 |
| C |
269 |
1.34 |
5.0 |
References:
Markedsoversigt med EU's energimærkning:
Fryseskabe, indbygning. Can be obtained from
NVE.
In Danish.
Markedsoversigt med EU's energimærkning:
Køle-/svaleskabe, indbygning. Can be obtained from
NVE.
In Danish.
Administrative information:
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