what cools the air in a household refrigerator?

what cools the air in a household refrigerator?

Inside the refrigerator, the evaporator absorbs heat and cools the inside. Outside, room air cools the condensor coils that are bring heat from the inside of the refrigerator.

a furnace is used to heat?

The air in a household refrigerator is cooled by a combination of processes. The main component responsible for cooling is the refrigeration cycle. Here is a step-by-step explanation of how it works:

1. Compressor: The compressor, located at the back of the refrigerator, is the heart of the refrigeration cycle. It compresses the refrigerant gas, raising its temperature and pressure.

2. Condenser Coils: The hot, high-pressure gas from the compressor then moves to the condenser coils, typically located at the back or underneath the refrigerator. These coils dissipate the heat from the gas to the surrounding room air, which helps to cool down the gas.

3. Refrigerant: The high-temperature, high-pressure gas then flows into a capillary tube or expansion valve, which acts as a restriction. This causes a sudden drop in pressure, leading to the refrigerant gas becoming a low-temperature, low-pressure mixture.

4. Evaporator: The low-pressure refrigerant now enters the evaporator, which is typically located inside the refrigerator compartment. As the refrigerant expands, it absorbs heat from the air inside the refrigerator, causing the temperature to drop. This cools the air in the refrigerator.

5. Fan: A fan inside the refrigerator helps to circulate the cool air throughout the compartment, ensuring an even temperature distribution.

So essentially, the air in the refrigerator is cooled by the evaporator, which absorbs heat from the air inside the fridge. The condenser coils, located outside the fridge, cool down the hot refrigerant gas by dissipating the heat into the surrounding room air.