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Insight Into The Refrigeration System Of Refrigerator Trucks

Imagine driving down the highway on a hot summer day when suddenly, a big truck pauses behind you. Despite its gleaming exterior and distinctive branding, the sizeable refrigeration unit on the rear is what draws your attention. The perishable foods inside the refrigerator truck that you are currently looking at are kept fresh and suitable for ingestion by the refrigeration system. Perishable goods are transported thanks to a variety of refrigeration methods safely. Additionally, a sizable portion of refrigerator trucks is made up of refrigeration equipment. Let’s look at these systems to see how they keep our meals flavorful and fresh even on the hottest days.

Understanding Refrigeration-Based Cooling Systems With Its Factors

 For refrigerator trucks, refrigeration systems are essential because they uphold the desired temperature range for shipping perishable products. Some of the refrigeration methods used in refrigerated vehicles include thermoelectric cooling, absorption refrigeration, and vapour compression refrigeration. Each approach has particular advantages and disadvantages. When choosing a refrigeration system, the type of cargo, vehicle size, and desired temperature range are all crucial factors.

Different Kinds Of Refrigeration System In Vehicles

  • Vapor Compression (VC) Refrigeration System

 Vapour compression refrigeration is the most commonly used refrigeration system in refrigerator trucks. Many trucks have these refrigeration systems that can be customised. Mahindra Truck, like Bolero and Furio series, can be customised with this type of refrigeration system. This system removes heat from the cargo area by compressing and expanding a refrigerant gas. The compressor, condenser, expander and evaporator are the four basic components of a vapour compression refrigeration system.

The compressor increases the temperature and pressure of the refrigerant gas in a vapour compression refrigeration system. The hot refrigerant gas then passes through the condenser, releasing heat and condensing into a liquid. The liquid refrigerant is then forced through the expansion valve, where its pressure and temperature are reduced. The low-pressure liquid refrigerant is then introduced into the evaporator, which absorbs heat from the cargo area and evaporates into a gas. The cycle is repeated, with the compressor drawing in low-pressure gas and compressing it again.

Many advantages exist for VC refrigeration systems, including excellent dependability, parts availability, and a workforce for maintenance and repair. Furthermore, they require external power from the truck’s engine or a separate generator and may be more useful in extreme heat.

  • Absorption Refrigeration System

The refrigeration cycle in absorption refrigeration is driven by a heat source. This system is also an alternative to vapour compression refrigeration. An absorber, a generator, a condenser, and an evaporator are the four essential components.

In an absorption refrigeration system, the refrigerant gas is absorbed into a liquid known as the absorbent. The absorbent is then fed into a generator heated with a heat source such as natural gas or propane. Because of the heat generated, the refrigerant gas separates from the absorbent and turns into vapour. The refrigerant vapour then passes through a condenser, releasing heat and condensing into a liquid. The liquid refrigerant is forced through a valve of expansion, where its temperature and pressure are decreased. This low-pressure refrigerant liquid is then entered into the evaporator, which absorbs heat from the cargo body and evaporates it into a gas. The cycle is then completed by absorbing the refrigerant vapour back into the absorbent in the absorber.

The ability to use alternative heat sources is one of the benefits of absorption refrigeration systems. They are also capable of operating in harsh environments. However, they are less efficient than VC refrigeration systems and necessitate more maintenance and repairs.

  • Thermoelectric Cooling Refrigeration System

 The Peltier effect is used in thermoelectric cooling, a relatively new technology. This makes it easier to create a temperature gradient within the semiconductor material. The temperature difference can keep the cargo body at the desired temperature by removing heat. As a result, for small refrigeration systems, thermoelectric cooling is the best option. Mahindra Jeeto can be a good option for customising mini-fridges and portable coolers. 

 An electrical current is passed through a semiconductor material in a thermoelectric cooling system. Because of the electricity, one side warms up while the other cools down. As a result, the cold side is in direct contact with the cargo body. In the meantime, a heat sink, such as a fan or a heat exchanger, cools the hot side created by electricity.

Thermoelectric cooling systems have benefits such as compact size, low noise, and no mechanical components, making them easier to maintain and repair. Furthermore, because they can maintain a specific temperature range, they are ideal for transporting temperature-sensitive cargo. However, they have a lower cooling capacity and are less efficient than VC and Absorption Refrigeration Systems. As a result, they are only suitable for carrying lighter cargo loads.

Different Factors Affecting To Select Refrigeration System In Vehicles 

 Several elements, including the cargo type, the truck’s size, the ideal temperature range, and the operating circumstances, are factors when choosing a refrigeration system for a refrigerator truck. Shipping frozen items necessitates a lower temperature range than transporting fresh food, which may influence the refrigeration system chosen.

  • Refrigerator Vehicle’s Size

The size of the truck is also important when choosing a refrigeration system. To maintain a consistent temperature range, larger trucks may require more powerful refrigeration systems. Smaller trucks, on the other hand, may be better suited to thermoelectric cooling systems.

  • Preferred Temperature Range

 Another important consideration is the ideal temperature range. Some refrigeration technologies, for example, absorption refrigeration, are better suited to extremely high temperatures. Others, such as VC refrigeration, on the other hand, are better at maintaining a consistent temperature range in moderate conditions.

  • Operating Situation

The refrigeration method chosen may also be determined by using the refrigerator truck. Stronger refrigeration systems, for example, may be required for trucks operating in warm climates to account for higher ambient temperatures.

Thoughts At Conclusion

 Refrigeration systems are required for refrigerator trucks in order to maintain a consistent temperature range when transporting perishable commodities. The three most common refrigeration techniques used in refrigerator trucks are VC refrigeration, absorption refrigeration, and thermoelectric cooling, each with its own set of advantages and disadvantages. The type of cargo, the size of the truck, the ideal temperature range, and the operating conditions all impact the refrigeration system selection. As a result, selecting the proper refrigeration system is critical for transporting perishable commodities efficiently and safely.

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