Gas Consumption and Measurement Quiz

What does the gas rate refer to in the context of gas consumption?

• The amount of gas used in cubic meters per hour

• The amount of heat generated in kilowatts

• The cost of gas per cubic meter

• The efficiency of gas appliances

How is the gross heat input expressed and calculated?

• In kilowatt hours, by multiplying the gas rate in m³ by the calorific value and dividing by 3.6

• In cubic meters, by dividing the gas rate by the calorific value

• In kilowatt hours, by multiplying the gas rate in m³ by 3.6

• In cubic meters, by multiplying the gas rate by the calorific value

What is the conversion factor used to convert ft³/h into m³/h?

• 35.3

• 3.6

• 30

• 10

How do you find the gas rate over an hour using a metric meter?

• Multiply the difference in readings over two minutes by 30

• Divide the difference in readings over two minutes by 30

• Multiply the difference in readings over two minutes by 3.6

• Divide the difference in readings over two minutes by 3.6

What is the formula to find the heat input when 0.84 m³/h of gas is consumed with a calorific value (CV) of 38.5?

• 0.84 × 38.5 ÷ 3.6

• 0.84 × 39.1 ÷ 3.6

• 0.84 × 38.5 × 3.6

• 0.84 ÷ 38.5 ÷ 3.6

How do you find the net heat input from the gross input?

• Divide the gross input by 1.1

• Multiply the gross input by 1.1

• Subtract 1.1 from the gross input

• Add 1.1 to the gross input

If the gross input is 9.12 kW, what is the net heat input?

• 8.29 kW

• 9.29 kW

• 8.98 kW

• 9.98 kW

What is the calorific value (CV) used for the gas rate/heat input tables?

• 38.6

• 40.0

• 35.0

• 37.5

What should be done to determine the gas rate/heat input of an appliance?

• Turn off all other appliances and run the appliance for about 10 minutes

• Increase the calorific value

• Use a different type of gas meter

• Record the reading immediately

How is the gas volume measured for meters reading in m³?

• By observing the test dial for 1 ft³

• By recording a reading over a two-minute period

• By using a stopwatch

• By calculating the calorific value