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∙ 11y agoEt = pt /Pt-1
Et = ecological efficiency at trophic level t
Pt = net productivity at trophic level t
Pt-1 = net productivity at trophic level t-1
Productivity can be measured either in kcal energy or in grams of biomass
Wiki User
∙ 12y agoefficiency=(useful energy output/ total enerygy)*100
Wiki User
∙ 14y agoEfficiency= (output/input)*100
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What is the equation used to work out energy efficiency?
a+b=c/3
What compares the energy output of a system with its energy input?
Is it's Energy Efficiency.
How do you interpret a sankey diagram?
It is a means of saying how much energy is useful and wasted. Has the appliance represented on the diagram got a high or low efficiency; i.e, is there a larger proportion of useful energy compared to that of wasted energy, making the it more efficient. Can you work out the efficiency as a percentage using your knowledge of the equation, Efficieny = useful energy out/ total energy in?
When was British Energy Efficiency Federation created?
British Energy Efficiency Federation was created in 1996.
What is the percentage of energy used to do work called?
The term EFFICIENCY is defined as useful work, divided by total energy expenditure.
What is the equation used to work out energy efficiency?
a+b=c/3
What is the equation for efficieny?
efficiency =the useful (energy for example) The total put in (energy put in/available)
What compares the energy output of a system with its energy input?
Is it's Energy Efficiency.
How is the law of conservation of energy related to efficiency?
Efficiency can never be greater than one because it is the ratio between work you got out of the system and the total energy. Because of conservation of energy, the equation ΔE = Q + W reduces to Q + W = 0.
How do you interpret a sankey diagram?
It is a means of saying how much energy is useful and wasted. Has the appliance represented on the diagram got a high or low efficiency; i.e, is there a larger proportion of useful energy compared to that of wasted energy, making the it more efficient. Can you work out the efficiency as a percentage using your knowledge of the equation, Efficieny = useful energy out/ total energy in?
What is the coal energy efficiency?
If it is burned - which is the way such fuels are usually used - the energy efficiency is the energy efficiency of a heat engine. The theoretical maximum efficiency is the Carnot efficiency; the real efficiency will usually be considerably less than that.
How do you calculate efficiency and how is it expressed?
For efficiency, you have to consider the energy or work that you get out of the machine, compared to the energy or work that you put into the machine. Its what you get out, divided by what you put in. By multiplying the result by 100, you should then get the efficiency expressed as a percentage, which is the normal way of describe how efficient a machine or process is. efficiency = (Work out/Work in) x 100 Sometimes you are given the efficiency in a problem, but then have to calculate either the work out or work in, so then its just a case of rearranging the equation above.
The percentage of energy from a fuel that is actually used to perform work is its?
That is called efficiency. An efficiency of 1 (or 100%) means that all the energy is converted into useful work.That is called efficiency. An efficiency of 1 (or 100%) means that all the energy is converted into useful work.That is called efficiency. An efficiency of 1 (or 100%) means that all the energy is converted into useful work.That is called efficiency. An efficiency of 1 (or 100%) means that all the energy is converted into useful work.
What is mean of pump efficiency?
The ratio between the energy efficiency of pumps and pump uses the energy that does. Pump efficiency is determined by the manufacturer. In the calculation of pump efficiency is 70%.
When was British Energy Efficiency Federation created?
British Energy Efficiency Federation was created in 1996.
Why can't the efficiency of a device or a process be greater than 100?
Efficiency cannot be greater than 100% because efficiency measures energy, and since energy is not made, only transfered (conservation of energy) then we cannot gain energy. Hence the energy out must be at most the energy in. Thus efficiency can be at most 100%
What is the percentage of energy used to do work called?
The term EFFICIENCY is defined as useful work, divided by total energy expenditure.
