Answer :
The metering device in a modern room air conditioner is typically a thermostatic expansion valve (TXV) or a capillary tube. These devices regulate the flow of refrigerant into the evaporator coil, allowing for efficient cooling.
Final answer:
The metering device in a modern room air conditioner is typically a thermostatic expansion valve. It controls the rate of refrigerant flow into the evaporator, essential for cooling air and the overall efficiency of the unit.
Explanation:
The metering device in a modern room air conditioner is typically a thermostatic expansion valve (TEV or TXV). This vital component controls the amount of refrigerant flowing into the evaporator. As the refrigerant leaves the condenser, it arrives at the thermostatic expansion valve, where it is reduced to a lower pressure. This process causes the refrigerant to cool down before it enters the evaporator, where it absorbs heat from the room and cools the air. The thermostatic expansion valve plays a crucial role in the efficiency of the air conditioning unit.
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