To save energy, we must also know how much electricity an appliance consumes. Consumption are shown in kilowatt hours (kWh) and as such are recorded by the meter, while the power of the appliance is expressed in kilowatts (kW). The kilowatt hour is none other than the power drawn from the appliance. For example, an iron may have a power of 1 kW or 1.5 kW in the first case, power consumption, consumption that is marked by the counter, will be 1 kW per hour (1 kWh) in the second of 1.5 kW per hour (1.5 kWh). If an iron works at the same time an electric oven which has a capacity of 2.5 kW, it is likely that the counter does not handle the load and, therefore, the switch will drop automatically stopping the flow of current. However, to make sure that the ASR consumption of an appliance, just read the label on each device that indicates the power or the instruction booklet. Sometimes the claim is in watts (W), which corresponds to one thousandth kilowatt (kW).
Below, the National Consumers Union provides some tips for saving electricity with all components, both bills have a "lighter" and to avoid an excessive load that may cause power outages.
washing. Normally consume about 2 kWh.
To save money, use the washing machine only at full load, or use the button "half load" (if present). Sort your laundry according to type of fabric and dirt, and then the program correctly.
For the laundry is not too dirty, avoid pre-wash: in this will save energy, water and detergent. Prefer washing programs at high temperatures. Wash laundry at 90 ° only very very dirty and very strong: this temperature, in fact, leads to high consumption of water, detergent and electricity (to raise the water temperature).
Dishwasher. Normally consume about 2 kWh.
To conserve electricity to avoid using the car for a few dishes and to exclude from the program, the drying step: opening the door and allows air to circulate will get the same results with 45 percent less electricity. Reserve intensive course loads only with pots, pans and oven dishes heavily soiled.
lighting. The consumption depends on the amount and type of lamps .
Prefer energy saving light bulbs, compact fluorescent . They cost more but last up to eight times more than normal incandescent bulbs and, above all, consume up to 70 percent less. The same is true for so-called neon, but they are only suitable in certain environments. The halogen lamps have a longer duration than traditional bulbs, but for the type of light that emit light are more suitable for precise locations, because otherwise they lose 20 percent of brightness. In environments where you need maximum lighting, replace the common switches with a dimmer. There are also circuit breakers that operate the lights only in the presence of people, and then to stop the shift. In general, remember that a 100 watt light bulb as 6 to 25 watts, but they consume 50 percent more. Better then a single lamp in the center of the room with only one bulb. Paint the walls with light colors that reflect light.
TV and HiFi.Consumo around 0.2 kWh.
Place the TV on a very stable, so as to leave a space of at least 10 cm between the wall and the back of the machine to allow ventilation. Avoid stand-by, at least where you can. The same goes for the hi-fi. In video recorders, however, to maintain the functions of remote control, clock, and we must respect the memory function of stand-by and sacrifice about 0.1 kW per hour.
Refrigerator and freezer. Consumption around 0.25 kWh.
Place the refrigerator in the most cool kitchen, away from heat, making sure to leave a space of at least 10 cm between the wall and the back of the unit, so that is well ventilated. Store all food in the fridge neatly and only once they have cooled to prevent the formation of frost on the walls. Adjust the thermostat to intermediate positions. Positions are cooler to increase consumption of 10-15 percent. The minimum required to open the refrigerator door, above all, make sure to keep it open as little as possible to avoid the dispersion of the cold and, consequently, the waste of energy. Check the good condition of the door seals. Defrost the fridge before the ice sheet interior exceed 5 mm: the frost increases consumption. At least once a year, to better maintain the efficiency of the device and prevent the increase of fuel consumption, clean the condenser coils.
electric oven. consumption of around 2.3 kWh.
open the door during cooking the bare minimum. Turn off the oven just before cooking is complete and exploit the residual heat. Thoroughly clean the oven every time you use it.
electric water heaters. The consumption depends on the type of device, but normally is around 1 to 1.5 kWh.
Install the unit near the point of use to prevent heat loss when the hot water through long pipes. Do periodically check and clean the coil to eliminate the calcium deposits, which reduce heat transfer by increasing consumption. Set the thermostat to 45 ° C in summer and 60 ° C in winter.
vacuum. about 2 kWh consumption.
not leave the vacuum on "empty" before aspiring to bring order to provide the environment to make it easier and faster cleaning. If the vacuum cleaner than steam, with higher consumption compared to traditional ones and requiring a heating time, try to devote to this task when the whole house is in order and ready to be "vaporized." Also in the case of a steam cleaner take care of the maintenance: the real enemy is limestone.
conditioner. Average consumption around 2.3 kWh.
While the air conditioner is in use, do not open the windows. The mechanism of operation of the conditioner, in fact, is very similar to that of a normal fridge and energy expenditure occurs at each change in temperature. If possible, obtain a timer can be programmed to operate only in the hours and the time required to cool Home.
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