A remote weakening of the meter during peak hours. This will be the tool to force Italians to consume less energy and thus avoid a crisis with no return. This can be done with all utilities equipped with smart meters. For the others for now it is more a question of moral suasion, but it is not certain: the experts are working to find technical solutions in these cases as well. However, energy austerity shouldn’t be a huge sacrifice.
Electricity cuts, the heat pump mockery. “It won’t be easy to warm up”
Energy, cut in electricity consumption
Europe is asking for a 5% cut in peak hours, which change from country to country according to different lifestyles and consumption, but which are generally three to four per day. The goal is a monthly reduction of 10%. Each country will have to issue its own instructions for use. In the meantime, we can already start making assumptions.
What is the peak hour for energy consumption in Italy? In general, there are two times of greatest consumption: between 10 and 12 in the morning and between 16 and 18. Even yesterday’s consumption, reported on the Terna website, confirms the trend: at 10 am consumption has skyrocketed to 47.383 Mw (from 45.046 of 9) to remain more or less on these values until 12 when there was a peak at 47.903 Mw. Then the descent began until 15 (at 14 the consumption was equal to 45.318) to return abundantly above 47 between 16 and 18. The hours of least consumption were between 23 and 7 the next morning.
What will happen during rush hours?
To force Italians to consume less, the available power will be reduced by 5%. Therefore, it is clear that all the appliances cannot be used at the same time, otherwise the counter clicks.
The appliances that consume the most energy while they are running are washing machines and dishwashers. A washing machine typically it has a minimum power of 1.8 kWh and a maximum of 2.7 kWh; a dishwasher typically has a minimum power of 2 kWh and a maximum of 2.2 kWh. However, as everyone knows, consumption changes according to the energy class. The modern ones dishwasher with low consumption of adequate capacity for 10-12 place settings consume, for the longest cycle, between 1.4 and 1.8 kWh. Furthermore, consumption is drastically reduced when using the so-called “rapid cycles”, which consume about 0.7 kWh and allow time savings of up to 60%. In the case of the washing machine, consumption is mainly due to the energy needed to heat the water rather than to the use of the motor, so washing at lower temperatures consumes less.
The other appliances
Another appliance that absorbs a lot of energy is it water heater electric, which typically has a minimum power of 1 kWh and a maximum of 1.2 kWh. Even the oven it consumes a lot: about 2 kWh regardless of the traditional temperature set. The average energy consumption of the microwave oven is around 1.1 kWh to produce 700 W of microwave power. However, if the microwave is used not only for heating but also for cooking, and therefore using the grill function which involves the use of an electric resistance, the energy required is greater: the absorbed energy can reach up to 1.5 kWh .
The iron is another energy-intensive household appliance: the most common irons have powers ranging from 600 to 3000 W. stoves electric: if kept on at maximum power, they consume 1-2 kWh. Also beware of hairdryer: Most hair dryers available on the market have a power between 600 watts and a maximum of 2,400 watts. The fridge instead it is more “thrifty” as regards hourly consumption which, according to the various types, ranges from a minimum of 0.1 kWh to a maximum of 0.3. On the other hand, the fridge never turns off during the day, unlike other appliances.
In the most modern houses we often also find the heat pump for the production of hot water and heating: generally the absorption depends on the power, obviously, for a medium-sized house (120 m2) it is around 2.3 kWh.
To prevent the counter from tripping, it is necessary to program the switching on of the various appliances at non-overlapping times. After all, the calculation is not difficult and depends on the average power required from the supplier. The most common is 3 kW. The contracts, however, allow a flexibility margin of 10%, so the meter does not “jump” up to 3.3 kilowatts. A 5% reduction is not a drama: the cut is in fact about 0.15 kilowatts. It will certainly not be possible to use the fridge, dishwasher, washing machine and oven at the same time. And to tell the truth, with a 3 kW contract it isn’t even now. Even more so if you turn on some light bulbs and the TV.
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Cut to the use of household appliances, from the washing machine to the hairdryer: which ones can be used and at what times
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