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Understanding the Refrigeration System Diagram for Cooling

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This diagram represents the cooling cycle in a refrigeration system, commonly found in heat pumps and air conditioning units. The process involves circulating refrigerant to transfer heat, ensuring efficient cooling. Let’s break down how this works step by step:

1. High Temperature and High-Pressure Gas

The cycle begins with the refrigerant being compressed by the rotary compressor. This increases the refrigerant's pressure and temperature, turning it into a high-temperature, high-pressure gas. The gas then flows to the next stage in the system.

2. Finned Heat Exchanger (Condenser)

The hot gas enters the finned heat exchanger, where it releases heat to the surrounding air. This exchange cools the refrigerant down, causing it to condense into a liquid form. At the same time, warm air is expelled from the system, and ordinary temperature air flows in to aid the cooling process.

3. Medium Temperature and High-Pressure Liquid

After the gas releases its heat and condenses, it transforms into a medium temperature and high-pressure liquid. At this stage, it is still mixed with a small amount of gas. The refrigerant continues moving through the system for further cooling.

4. Electronic Expansion Valve (EEV)

Next, the refrigerant flows through the electronic expansion valve (EEV). This valve lowers the pressure of the refrigerant, causing it to cool down further and form a low temperature and low-pressure gas-liquid mixture. This step is critical for the refrigerant to absorb heat during the next phase.

5. Low Temperature and Low-Pressure Gas-Liquid Mixture

The refrigerant mixture then enters the plate heat exchanger, where it absorbs heat from the warm water passing through the system. As a result, the water is cooled down, and the refrigerant evaporates back into a gaseous state.

6. Low Temperature and Low-Pressure Gas

Now, the refrigerant has fully evaporated into a low temperature and low-pressure gas. It moves through the system toward the compressor, ready to repeat the cycle. A pressure sensor monitors the refrigerant to ensure it maintains the proper conditions for optimal cooling performance.

7. Rotary Compressor

The refrigerant returns to the rotary compressor, where it is once again compressed into a high-temperature, high-pressure gas. This begins the cooling cycle again, maintaining a continuous loop of heat absorption and dissipation.

8. 4-Way Valve

The 4-way valve is a key component that allows the system to switch between cooling and heating modes, depending on the requirements of the environment.

Conclusion

This refrigeration system effectively transfers heat from the water to the air, cooling the water in the process. The continuous cycle of compression, heat exchange, and expansion enables the system to maintain a constant flow of cooled air or water.

Domestic air source heat pump selection should be combined with climate conditions and house conditions

Heat Pump Refrigeration System Diagram for Heating & Hot Water