Pronounce physicus
For example, for a typical nuclear reactor with a thermal power of 3000 MWth, about ~1000MWe of electrical power is generated in the generator. In this field, the megawatt-day refers to the thermal power of the reactor, not the fraction which is converted to electricity. Therefore fuel burnup of nuclear fuel is normally have units of megawatt-days per metric tonne ( MWd/MTU), where tonne refers to a metric ton of uranium metal (sometimes MWd/tU HM as Heavy Metal). The most commonly used measure of fuel burnup is the fission energy release per unit mass of fuel. This unit (MWd) was also used to derive unit of fuel burnup. At nuclear power plants there are also gigawatt-days, because it approximately corresponds to energy produced by power plant over a period of one day.
One megawatt-day is equal to one megawatt of power produced by power plant over a period of one day (megawatts multiplied by the time in days). It is used to measure energy produced, especially in power engineering. Megawatt-day is a derived unit of energy. When we use the brakes to stop a car, that kinetic energy is converted by friction back to heat, or thermal energy. The mechanical energy has been converted to kinetic energy. The chemical energy in gasoline is converted to thermal energy, which is then converted to mechanical energy that makes the car move. It is one of the elementary properties of the universe.įor example, burning gasoline to power cars is an energy conversion process we rely on. Moreover, when transformed from one type to another and transferred from one object to another, the total amount of energy is always the same. One of the most wonderful properties of the universe is that energy can be transformed from one type to another and transferred from one object to another. It must be added, this interpretation can be misleading because energy is not necessarily available to do work. To do 1 kilojoule of work, you must expend 1 kilojoule of energy. Sometimes it is like the “currency” for performing work. Energy is generally defined as the potential to do work or produce heat. Technically, energy is a scalar physical quantity that is associated with the state of one or more objects. The term energy is very very broad and it has many definitions. In its core, the Sun fuses 620 million metric tons of hydrogen each second.
What is Energy The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium.