NOCTI: HVAC Performance and Gas Analysis

An HVAC system uses 5 kW of electrical energy. If the system's efficiency is 80%, how much energy is effectively used for heating or cooling?

• 3 kW

• 4 kW

• 5 kW

• 6 kW

Tags

CCSS.6.RP.A.3C

If an HVAC system consumes 10 kW of electrical energy and the conversion factor from kW to gas is 0.03412, how much gas energy is equivalent to the electrical energy consumed?

• 0.3412 kW

• 3.412 kW

• 34.12 kW

• 341.2 kW

Tags

CCSS.6.RP.A.3D

An HVAC system has a gas consumption rate of 2 cubic meters per hour. If the energy content of the gas is 10 kW per cubic meter, what is the total energy consumption in kW per hour?

• 5 kW

• 10 kW

• 20 kW

• 40 kW

Tags

CCSS.6.RP.A.3B

A building's HVAC system shows a performance drop, consuming 15% more gas than usual. If the normal gas consumption is 100 cubic meters per day, what is the new gas consumption?

• 105 cubic meters

• 115 cubic meters

• 120 cubic meters

• 130 cubic meters

Tags

CCSS.6.RP.A.3C

If an HVAC system's performance is analyzed and found to have a coefficient of performance (COP) of 3, how much heating or cooling energy is produced per kW of electrical energy consumed?

• 1 kW

• 2 kW

• 3 kW

• 4 kW

Tags

CCSS.8.EE.C.7B