A standard air conditioner involves a refrigerant that is typically now a fluorinated hydrocarbon, such as CH₂F₂. An air-conditioner refrigerant has the property that it readily vaporizes at atmospheric pressure and is easily compressed to its liquid phase under increased pressure. The operation of an air conditioner can be thought of as a closed system made up of the refrigerant going through the two stages shown here (the air circulation is not shown in this diagram).
During expansion, the liquid refrigerant is released into an expansion chamber at low pressure, where it vaporizes. The vapor then undergoes compression at high pressure back to its liquid phase in a compression chamber. (c) In a central air-conditioning system, one chamber is inside the home and the other is outside. Which chamber is where, and why?

검증된 단계별 안내

Identify the two chambers involved in the air conditioning system: the expansion chamber and the compression chamber.

Understand the function of each chamber: the expansion chamber allows the refrigerant to vaporize, absorbing heat, while the compression chamber condenses the refrigerant, releasing heat.

Consider the purpose of each chamber in relation to the environment: the expansion chamber should be where cooling is needed, and the compression chamber should be where heat can be dissipated.

Determine the location of each chamber based on their functions: the expansion chamber should be inside the home to absorb heat and cool the air, while the compression chamber should be outside to release the absorbed heat into the environment.

Conclude that the expansion chamber is inside the home to provide cooling, and the compression chamber is outside to expel heat.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Phase Changes

Phase changes refer to the transitions between solid, liquid, and gas states of matter. In the context of air conditioning, the refrigerant undergoes phase changes from liquid to gas during expansion and from gas to liquid during compression. Understanding these transitions is crucial for grasping how refrigerants absorb and release heat, which is fundamental to the cooling process.

Thermodynamics

Thermodynamics is the study of energy transfer and the laws governing heat and work. In air conditioning systems, the principles of thermodynamics explain how energy is conserved and transformed as the refrigerant circulates. The concepts of pressure, temperature, and enthalpy are essential for understanding how the refrigerant operates within the system, particularly during the compression and expansion processes.

Closed System

A closed system is a physical system that does not exchange matter with its surroundings but can exchange energy. In the case of an air conditioner, the refrigerant circulates within a closed loop, allowing it to absorb heat from the indoor environment and release it outside. Recognizing the closed system nature of the air conditioning process helps in understanding how the refrigerant's properties are utilized to achieve efficient cooling.