If you are interested in the question of how many watts are in kilowatts, then you will find the answer by reading this article. What is a watt? This is a power unit adopted by the International System for Measuring Units (SI). It got its name thanks to the mechanical inventor of Scottish-Irish descent, James Watt, who created the universal steam engine. Until 1882, in most calculations, horsepower was used as the main unit of measurement, and only after the invention of mechanics, a new unit of power - watt - was adopted everywhere (primarily in electrical engineering). In physics, power is the process of energy consumption per unit time, respectively, one watt will be equal to one joule per second (W = J / s).
How many watts to kilowatts
People are constantly confronted with the concept of electrical power in everyday life. All household appliances in the passport indicate the value of power consumption. Even on an elementary incandescent light bulb, on a glass bulb, it says: 40 W, 60 W, 100 W, etc. As for the microwave oven or washing machine, here the value considered will be much higher: 500-1000 W and 2-2, 5 kW respectively.
As in other physical quantities, the prefix "kilo" means a multiple of a thousand. That is, the numerical value of the power, measured in kilowatts, must be multiplied by 1000 or moved to the right by a comma by three digits: so we get the value of electric power in watts.
Thus, to the question of how many watts per kilowatt, we received a definite answer: in one kilowatt a thousand watts (1 kW = 1000 watts). Next, we will analyze examples of recording electric power. Here are some examples of how to translate the indicated quantities:
- 2.5 kW = 2500 watts.
- 0.2 kW = 200 watts.
- 3.095 kW = 3095 W.
Sometimes a unit of power, expressed in watts, is converted to kilowatts. We remember how many watts are in kilowatts, so we divide the known value by a thousand. Or the comma is moved three digits to the left.
- 2750 W = 2.7 kW.
- 70 W = 0.07 kW.
- 150 W = 0.15 kW.
Let's analyze the concept of “kilowatt hour”
In kilowatt hours (or in watt hours), the energy consumption of an electric device is measured in one hour of operation. As an example, take a conventional computer with a power of 0.65 kW. Suppose he worked for one hour. How do you know how much electricity he consumed during this period? Very simple: we multiply 0.65 kW by 1 hour of work, we get 0.65 kW * h. A conventional 100-watt incandescent lamp consumes 100 watts of energy in one hour, therefore, it will cost 2.4 kW per day of continuous operation. How many watts in kW, we have already considered above.
Major household electricity consumers
Currently, even wealthy people began to think about saving energy - they refuse incandescent lamps and replace them with economical bulbs or LEDs. When choosing household appliances, the main parameter that is especially paid attention to is the efficiency of the devices. In every house or apartment you can find such equipment as a refrigerator, TV, computer, iron, electric kettle. Consider the energy consumption of these units. The refrigerator usually operates around the clock, its energy consumption will be from 0.7 to 1.3 kW per day - everything will depend on the size of the device and the ambient temperature. The computer, provided that it did not turn off, can consume up to 13.5 kW per day. A television consumes an average of 2.5 kW in 24 hours. However, the biggest "spenders" are heating appliances: electric kettles, boilers, electric stoves and others. For example, an electric kettle consumes 1-1.2 kW in 20-25 minutes, which can be compared with a continuously working refrigerator. And how much electricity do you spend?