Question

which of these can cool air in summer, heat air in winter, and control the amount of moisture in the air?
answer options:
select one of four
electrical heating system heat pump
air conditioner radiator
feedback:
incorrect. review the functions of these devices in practical applications of the change of state. try again.

Explanation:

1. Analyze each option:

• Electrical heating system: Only heats, no cooling or moisture control.
• Heat pump: Can reverse cycle to cool in summer, heat in winter, and dehumidify (control moisture).
• Air conditioner: Cools and controls moisture but typically not for heating (some modern ones can, but heat pump is more specialized for both).
• Radiator: Only heats, no cooling or moisture control.

1. The heat pump meets all three requirements: cool in summer, heat in winter, and control moisture.

Answer:

Heat pump