Heat Pump Working Principles Quiz

What is the main function of the reversing valve in a typical Air Source heat pump?

• To control the speed of the compressor

• To regulate the flow of refrigerant

• To allow both heating and cooling modes

• To adjust the temperature of the outdoor unit

Which component is responsible for driving the refrigerant around the heat pump system?

• Heat exchanger

• Expansion valve

• Check valve

• Compressor

What is the purpose of the outdoor unit in a heat pump system when it is in cooling mode?

• To reject unwanted heat into the air

• To compress the refrigerant

• To regulate the flow of refrigerant

• To expand the refrigerant

Tags

NGSS.HS-PS3-4

In heating mode, which unit acts as the evaporator in a heat pump system?

• Compressor

• Indoor unit

• Outdoor unit

• Expansion valve

What is the boiling point of refrigerant R410A, commonly used in heat pumps?

• -48 degrees Celsius

• -26 degrees Celsius

• 0 degrees Celsius

• 100 degrees Celsius

Tags

NGSS.HS-PS3-4

What is the main source of power for the compressor in a heat pump system?

• Diesel fuel

• Electricity

• Solar energy

• Natural gas

Tags

NGSS.HS-PS3-3

What happens to the refrigerant as it passes through the expansion valve in cooling mode?

• It is rejected into the air

• It expands and becomes a low pressure, low temperature, liquid vapor mixture

• It becomes a high pressure, high temperature, saturated vapor

• It condenses and becomes a liquid

What is the function of the fan in the outdoor unit of a heat pump system?

• To speed up heat exchange

• To expand the refrigerant

• To compress the refrigerant

• To regulate the flow of refrigerant

Tags

NGSS.HS-PS3-4

What is the purpose of the check valve in a heat pump system?

• To prevent backflow of refrigerant

• To expand the refrigerant

• To compress the refrigerant

• To regulate the flow of refrigerant

Why is it still possible to extract energy from the air in winter for a heat pump system?

• Because the air temperature is always above 100 degrees Celsius

• Because the air temperature is always above 0 degrees Celsius

• Because the air temperature is always above -26 degrees Celsius

• Because the air temperature is always above -273 degrees Celsius

Tags

NGSS.HS-PS3-4