Energy efficiency can be defined as:
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Reducing the amount of energy used while maintaining outcomes: doing
more with less
What is the energy dilemma?
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Energy demand is forecast to double, while emissions have to be cut by
half to avoid dramatic climate change
A resistance of 500 ohms has a measured voltage drop of 120v. How much power is
driving the current?
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28.8 watts
A factory uses 3000 therms / 8330 cubic metres of natural gas each month. The gas
costs 72 cents per therm / 26 cents per cubic metre. The energy value of the gas is
10.5 kWh per cubic metre. A kWh of electricity costs 7c. Should the site switch from
natural gas to electricity, assuming that the efficiency remains the same?
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No, the same energy value of electricity costs more
Which of the following is the name for an analysis of a building's energy use where
opportunities for reducing energy consumption are identified and prioritized?
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Energy audit
Give this one a try later!
Reducing the amount of energy used while maintaining outcomes: doing
more with less
What is the energy dilemma?
, Give this one a try later!
Energy demand is forecast to double, while emissions have to be cut by
half to avoid dramatic climate change
A resistance of 500 ohms has a measured voltage drop of 120v. How much power is
driving the current?
Give this one a try later!
28.8 watts
A factory uses 3000 therms / 8330 cubic metres of natural gas each month. The gas
costs 72 cents per therm / 26 cents per cubic metre. The energy value of the gas is
10.5 kWh per cubic metre. A kWh of electricity costs 7c. Should the site switch from
natural gas to electricity, assuming that the efficiency remains the same?
Give this one a try later!
No, the same energy value of electricity costs more
Which of the following is the name for an analysis of a building's energy use where
opportunities for reducing energy consumption are identified and prioritized?
Give this one a try later!
Energy audit
