Efficiency is the effective operation as measured by a comparison of production with cost
The term energy efficiency refers to the measure of the useful energy.
An energy efficient appliance would convert the energy supplied to it with a minimal amount of heat returned as energy.
The 2nd Law of Thermodynamics states that in any spontaneous change, the entropy of the universe must increase; which means that the quality of energy deteriorates gradually over time.
Entropy is the measure of randomness or disorder in a system and is also a measure of unusable energy within a closed or isolated system
During a chemical reaction, energy is converted from one form to another.There is also a certain amount of energy that is converted into heat. Heat is a form of energy of lower quality and not as ―usable‖
Input is all components (matter and/or energy) entering the system.
Throughput is the flow of all components within the system.
Output is all components leaving the system.
A feedback loop is a circular process
A feedback loop is how the output becomes input and affects the system.
Negative feedback: reverses the direction of the flow.
Positive feedback: changes the rate of the throughput, but not the direction.
A feedback loop in which output of one type acts as input that moves the system in the same direction.
The input and output drive the system further toward one extreme or another.
A feedback loop in which the output of one type acts as input that moves the system in the opposite direction. The input and output essentially neutralize each other’s effects and stabilizes the system.
A high throughput economy is one that has a high output.
A Low Throughput economy is one that has a balance of input and output.
Hybrid gasoline-electric engines with an extra plug-in battery could be powered mostly by electricity produced by wind and get twice the mileage of current hybrid cars
Fuel-efficient vehicles powered by a fuel cell that runs on hydrogen gas are being developed.
We can save energy in existing buildings by insulating them, plugging leaks, and using energy-efficient heating and cooling systems, appliances, and lighting.
Strawbale is a superinsulator that is made from bales of low-cost straw covered with plaster or adobe. Depending on the thickness of the bales, its strength exceeds standard construction.
Low-priced fossil fuels and few government tax breaks or other financial incentives for saving energy promote energy waste
A variety of renewable-energy resources are available but their use has been hindered by a lack of government support compared to nonrenewable fossil fuels and nuclear power.
The term energy efficiency refers to the measure of the useful energy.
An energy efficient appliance would convert the energy supplied to it with a minimal amount of heat returned as energy.
The 2nd Law of Thermodynamics states that in any spontaneous change, the entropy of the universe must increase; which means that the quality of energy deteriorates gradually over time.
Entropy is the measure of randomness or disorder in a system and is also a measure of unusable energy within a closed or isolated system
During a chemical reaction, energy is converted from one form to another.There is also a certain amount of energy that is converted into heat. Heat is a form of energy of lower quality and not as ―usable‖
Input is all components (matter and/or energy) entering the system.
Throughput is the flow of all components within the system.
Output is all components leaving the system.
A feedback loop is a circular process
A feedback loop is how the output becomes input and affects the system.
Negative feedback: reverses the direction of the flow.
Positive feedback: changes the rate of the throughput, but not the direction.
A feedback loop in which output of one type acts as input that moves the system in the same direction.
The input and output drive the system further toward one extreme or another.
A feedback loop in which the output of one type acts as input that moves the system in the opposite direction. The input and output essentially neutralize each other’s effects and stabilizes the system.
A high throughput economy is one that has a high output.
A Low Throughput economy is one that has a balance of input and output.
Hybrid gasoline-electric engines with an extra plug-in battery could be powered mostly by electricity produced by wind and get twice the mileage of current hybrid cars
Fuel-efficient vehicles powered by a fuel cell that runs on hydrogen gas are being developed.
We can save energy in existing buildings by insulating them, plugging leaks, and using energy-efficient heating and cooling systems, appliances, and lighting.
Strawbale is a superinsulator that is made from bales of low-cost straw covered with plaster or adobe. Depending on the thickness of the bales, its strength exceeds standard construction.
Low-priced fossil fuels and few government tax breaks or other financial incentives for saving energy promote energy waste
A variety of renewable-energy resources are available but their use has been hindered by a lack of government support compared to nonrenewable fossil fuels and nuclear power.