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.
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
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
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).
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.
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.
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, Ed kWh per day
Wh per litre per day
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.