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Energy in the form of heat flows from a source through a heat engine (such as a steam turbine or an internal combustion engine), producing mechanical energy, and exiting as low quality thermal energy that cannot be used and is lost to the environment. Obviously the energy produced by the fuel is spent and the fuel is destroyed in the process. The low quality energy lost to the environment can't be used to reconstitute the fuel, so a cycle is not possible. Similarly with nuclear power, once the U235 nucleus is split, you can't put it together again. Some of the energy is usefully used, and some is lost to the environment.
One form of 'recyclable' energy is hydro power, in that the water used eventually returns to the reservoir in new rainfall, but this uses an external source of energy, the sun, to replenish the water used. Similarly for biomass, provided you replant enough crop to replace what has been burned, the process can continue, making use of the sun's energy to regrow the supply of fuel. In these processes though you are not actually recycling the energy, you are using an external source of energy to renew the fuel. So you should not call this recyclable energy, it is renewable energy.
What else can I help you with?
What provides energy in the water cycle?
The sun provides energy in the water cycle.
What provides the energy for the water cycle?
The sun provides the energy for the water cycle.
What type of energy do you gain as you cycle up a hill?
You gain Potential Energy as you cycle up a hill.
What provides most of the energy for the water cycle to occur?
The sun provides most of the energy for the water cycle to occur.
Does Calvin cycle use energy?
Yes, the Calvin cycle requires energy in the form of ATP and NADPH, which are produced during the light-dependent reactions of photosynthesis. These energy molecules are used to drive the chemical reactions in the Calvin cycle that ultimately result in the synthesis of glucose.
Where does the energy cycle comes from?
Sun is the source of energy. Energy cycle comes from it.
What is the energy source that drives the watre cycle?
The energy source behind the water cycle is solar energy. It is the only energy which initiates water cycle.
What is the source of energy the carbon cycle?
Solar energy is the source of energy behind the carbon cycle.
What provides energy in the water cycle?
The sun provides energy in the water cycle.
What provides the energy for the water cycle?
The sun provides the energy for the water cycle.
Where does energy for the water cycle come from?
Source of energy is the sun.
What is the source of energy that the water cycle?
The sun is the source of energy that creates the water cycle.
How does food and energy pass around a cycle?
The matter of the food passes in a cycle; the energy does NOT. The energy comes from the Sun, is used here on Earth, and most of the energy is eventually radiated out into space. There is no cycle there.
What is the source of energy behind the carbon cycle?
Solar energy is the source of energy behind the carbon cycle.
What supplies the energy that drives the energy cycle?
Energy from the sun
What provieds energy for earths water cycle?
Sun provides energy for earth's water cycle. It provides thermal energy for evaporation.
What is energy cycle related to ecosystem?
The energy cycle related to ecosystem is the transformation of bio-geochemical energy. This is able to link biotic and abiotic factors and cycle nutrients which forms the ecosystem.
