Which Compressor is Used in Commercial Refrigerator?

Figure 1: Commercial refrigerator.

Commercial refrigerators are essential appliances for businesses that need to store perishable goods. These refrigerators come in various sizes and designs, but they all have one thing in common - a compressor. The compressor is the heart of the refrigeration system, responsible for circulating refrigerant and removing heat from the refrigerator's interior.

In this article, we'll take a closer look at the different types of compressors used in commercial refrigeration (commercial refrigeration compressors) and their respective benefits and drawbacks, their prices, and how to replace them.

1. Types of Commercial Refrigerator Compressors

1.1 Reciprocating Compressors

Reciprocating compressors, also known as piston compressors, are the most common type of compressor used in commercial refrigeration. They work by using a piston to compress the refrigerant and then expelling it into the system's coils. Reciprocating compressors are available in both hermetic and semi-hermetic designs.

Hermetic reciprocating compressors are sealed units, which means the motor and compressor are housed in a single casing. This design is beneficial in that it reduces the risk of refrigerant leakage and makes maintenance easier. However, hermetic compressors are not as durable as their semi-hermetic counterparts, and they are not capable of handling as much refrigerant.

Semi-hermetic reciprocating compressors, on the other hand, feature a motor and compressor that are housed in separate casings. This design allows for easy maintenance and repair, and semi-hermetic compressors are capable of handling larger amounts of refrigerant than hermetic compressors. However, they are more expensive and can be more difficult to install.

Figure 2: Copeland piston compressor.

1.2 Scroll Compressors

Another type of compressor used in commercial refrigeration is the scroll compressor. Scroll compressors work by using two spiral-shaped scrolls to compress the refrigerant. This design allows for a smoother, quieter operation than reciprocating compressors, and they are also more energy-efficient. Additionally, scroll compressors are capable of handling larger amounts of refrigerant than reciprocating compressors.

However, scroll compressors are more expensive than reciprocating compressors and can be more difficult to repair. They are also not as effective in low-temperature applications as reciprocating compressors.

Figure 3: Copeland scroll compressor.

2. Considerations When Choosing a Compressor for Commercial Refrigerator?

When choosing a compressor for your commercial refrigeration system, it's important to consider several factors, including the size of your system, the type of refrigerant you'll be using, and the cost, etc.

2.1 Size of Your System

For smaller systems, a hermetic reciprocating compressor may be the best choice. They are affordable, easy to install, and require little maintenance. For larger systems, a semi-hermetic reciprocating compressor or a scroll compressor may be more appropriate. These compressors are capable of handling larger amounts of refrigerant and are more energy-efficient than reciprocating compressors.

If you need a compressor for a low-temperature application, a reciprocating compressor is usually the best choice. They are capable of reaching lower temperatures than other types of compressors and are more durable in these applications.

Figure 4: Bristol piston compressor.

2.2 Commercial Refrigerator Compressor Prices

The price of a compressor for a commercial refrigerator can vary significantly depending on the type of compressor, the size of the refrigerator, and the brand of the compressor. In general, reciprocating compressors are less expensive than scroll compressors, but the price difference can be significant.

Reciprocating compressors for commercial refrigerators can range in price from $200 to $800, depending on the size of the compressor and the brand. Scroll compressors, on the other hand, can range in price from $800 to $2,000 or more, depending on the size of the compressor and the brand.

When purchasing a compressor for a commercial refrigerator, it's essential to consider the long-term costs and benefits. While a scroll compressor may be more expensive initially, it can save a business money in energy costs over time. On the other hand, a reciprocating compressor may be a more affordable option upfront, but it may cost more in energy costs in the long run.

Figure 5: Commercial refrigerator.

3. Commercial Refrigerator Compressor Replacement

If a commercial refrigerator's compressor fails, it's essential to replace it as soon as possible to prevent spoilage of perishable goods. When replacing a compressor, it's essential to consider the size and type of compressor needed, as well as the brand and compatibility with the refrigerator.

Replacing a compressor for a commercial refrigerator can be a complex process that requires a professional technician. It's not recommended to attempt to replace a compressor without proper training and experience.

When replacing a compressor, it's also essential to consider the warranty and any potential maintenance or repair costs. Some compressors come with a manufacturer's warranty that can provide peace of mind if the compressor fails again in the future.

Figure 6: Commercial refrigerator compressor.

4. Conclusion

Choosing the right compressor for your commercial refrigeration system is crucial to the success of your business. Whether you choose a reciprocating compressor, a scroll compressor, it's important to consider factors such as system size, refrigerant type, and application.

By taking the time to choose the right compressor and performing regular maintenance, you can ensure that your commercial refrigeration system runs smoothly and efficiently for years to come.

5. FAQs

5.1 How Long Does a Commercial Refrigerator Compressor Last?

The lifespan of a commercial refrigerator compressor can vary depending on several factors, including the quality of the compressor, how well it is maintained, and the frequency of use. In general, a well-maintained and properly used commercial refrigerator compressor can last anywhere from 10 to 15 years or more.

It's important to note that compressors can fail for reasons other than just age. Common reasons for compressor failure include electrical issues, refrigerant leaks, and mechanical problems.

To ensure the longest possible lifespan for a commercial refrigerator compressor, it's essential to have it regularly maintained by a qualified refrigeration technician. Regular maintenance can help identify and address issues before they become more serious and can help extend the lifespan of the compressor.

5.2 Which is the Dominant Refrigerant Used in Commercial Refrigerator?

Figure 7: R290 refrigerant.

The refrigerant used in commercial refrigerators has evolved over time due to concerns over the environmental impact of certain refrigerants. In the past, chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) were commonly used as refrigerants in commercial refrigeration systems. However, these refrigerants have been found to be harmful to the ozone layer and have been phased out.

Currently, the dominant refrigerants used in commercial refrigeration systems are hydrofluorocarbons (HFCs), specifically R-404A and R-134a. These refrigerants have a lower impact on the ozone layer than CFCs and HCFCs, but they have a high global warming potential (GWP), which is the measure of the refrigerant's impact on climate change.

In recent years, there has been a push towards using refrigerants with lower GWPs to reduce the impact of commercial refrigeration systems on the environment. Some of the emerging refrigerants being considered for use in commercial refrigeration systems include hydrofluoroolefins (HFOs) and natural refrigerants such as carbon dioxide (CO2) and propane (R-290).

It's important to note that the choice of refrigerant used in a commercial refrigeration system can impact its performance and efficiency. Businesses should work with qualified refrigeration technicians to determine the appropriate refrigerant for their specific refrigeration needs while also considering environmental impact and regulatory requirements.

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