CEM practice Quiz 01
CEM Practice Quiz: Energy Efficiency
Welcome to the CEM Practice Quiz! This quiz is designed to test your knowledge on energy consumption and efficiency in various applications, particularly focusing on fuel types and their economic impact.
Participants will engage with multiple choice questions that cover:
- Energy conversion calculations
- Comparative cost analysis of fuel sources
- Understanding boiler efficiencies
How many MMBtu are in 20 gallons of gasoline?
160 MMBtu
160 MBtu
2.5 MMBtu
2.5 MBtu
How many MMBtu did you consume if your natural gas bill shows a usage of 245 Therms?
25.4 MMBtu
2,450 MMBtu
2,450 MBtu
24.5 MMBtu
How many MMBtu did your electric boiler consume if the electric sub-meter on the boiler showed a usage of 68,500 kWh?
Gas
Oil
A steam boiler for a facility can operate on natural gas or oil. • Using natural gas at $0.65 per Therm, the boiler is 75% efficient. • Using oil at $2.50 per gallon and 140,000 Btu per gallon, the boiler is 78% efficient. Which fuel source provides the lowest operating cost?
Your facility currently operates a natural gas (methane) boiler with an efficiency of 82% and a natural gas cost of $1.25 per Therm. A vendor is trying to sell you a boiler that uses light fuel oil and has an efficiency of 89%. What would be the equivalent fuel oil cost per gallon to make these two boilers operate at the same operating cost?
$8.03/gallon
$15.24/MMMBtu
$1.90/gallon
$1.25/gallon
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