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A dried van sometimes referred to as a box trailer is the most common kind of semi-trailer discovered in phibìc American commercial roadway transport. A semi-trailer has actually legs that assistance the structure’s weight as soon as it is uncoupled from the fifth wheel attachment. Dry vans typically measure 48 feet come 53 feet in length and also are generally used to transport dry freight such together appliances, furniture, and also electronics. Many loading docks are constructed to accommodate dry van trailers but some situations may exist where added arrangements are required such as a lift door or a portable loading ramp. Other functions that can be equipped to a dry van trailer incorporate insulation/heating, roll-up-doors, rub rails, aerodynamic skirts, and an e-track system.

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A van trailer deserve to be insulated in numerous ways. One option is to install an exterior heating unit such as a warmth King which is make by Thermo King. Another method to carry out it is to download a block foam behind the wall surface lining. Cove molding and interior corner closeouts additionally are included features that have the right to be used to insulate dried van trailers.

What is a Reefer?

A reefer formally referred to as a refrigerated trailer is generally a dry van with insulation and also refrigeration capabilities. They typically measure in between 48 and also 55 feet customs in length and also are designed to haul multiple LTL shipments within one run.

A reefer unit’s significant components are the engine, compressor, evaporator and condenser. Various other parts the a reefer unit incorporate a valve for fresh wait flow, temperature recorder, step-up power transformer, controller display/keypad, and also heater accessibility panel.

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Reefers space designed to move perishable and temperature-sensitive products such together frozen food products, produce, pharmaceuticals, and also chemicals.

Prior to shipment, a reefer requirements to be pre-cooled come ensure the products are ceded in great condition. The is critical to know that reefers are not meant to cool or warmth the goods however only to maintain the pre-set temperature. Diesel engines administer power come the refrigeration mechanism throughout the haul. There space reefers that enable for different sections the the trailer come be collection to various temperatures.

Fully electric trailer refrigeration units (eTRU) are generally used for standby storage purposes however reefer devices using a combination of power resources are available. Because that example, the hybrid-diesel-electric Vector 8600MT is a reefer unit v all-electric capability.

Physical attributes that refrigerated trailers consist of incorporate a roof come reflect heat-generating UV waves, tear-resistance translucent roof layering, impact-absorbing sidewall liner, and scuff plate.

How does a refrigerated trailer work?

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There are three main parts that variable into the functions of a refrigerated trailer.

The compressor functions to absorb and compress gas refrigerant. The compressor pressurizes the gas into a liquid refrigerant provides off heat to the body of the compressor and also to the surrounding air.


The condenser take away the warm liquid refrigerant native the compressor and transfers it into a heat ex-changer. Indigenous there, the fluid refrigerant flows to the tube walls and into the fin of the tubing. The large surface area top top the fins helps come cool outside air. Through this stage, the initial warm refrigerant has actually lost many of its warmth in the condenser.

Next, the cool refrigerant flows from the condenser right into a metering valve and then right into the evaporator wherein the refrigerant increases quickly. At this stage the refrigerant has converted into gaseous form and circulates right into the trailer to keep the items at the desired temperature.

There are differences in the way that hybrid reefer units and conventional reefer units work. A commonality lock both re-publishing is that the refrigerated trailers have an insulated foam coating on the trailer walls.

Some states in the United states have already moved and also some room still relocating towards creating emissions requirements for trailer units. Therefore, we will certainly cover the modern technology mechanism the hybrid reefers.

Conventional reefers that are powered just by diesel engine have belt-driven mechanical transmissions which have actually some downsides. For example, when the engine is began the unit will repeatedly run whether refrigeration is essential or not. Moreover, typical units mainly use belts and pulleys to motor the evaporator and also condenser fans, conversely, hybrid devices are thrust by maintenance totally free electric motors. Various other electric contents such together the semi-hermetic compressor replaces the compressor driveshaft and with it, the problems of shaft seal leaks. Fewer components in hybrid-electric reefers way there is less cost connected with maintaining and replacing contents such as suction/discharge vibrasorbers, mechanical pan shafts, alternators, the gear box, and more.

Further speaking, traditional units use warm gas systems which have displayed to be much less effective during cold problems when heating is many needed. In contrast, hybrid units utilize electric resistance strips which carry out greater durability amongst the refrigeration circuit and at the same time use less refrigerant.

Reefer units are equipped with sensors to monitor things other than cargo temperature such as compressor discharge pressure, electrical voltage because that diagnostics, and engine coolant temperature. Many hybrid electrical trailer refrigeration systems feature electrical standby which adds come the palliation in diesel cost.

Today’s refrigeration devices for trailers space equipped through microprocessors the do every little thing from running pre-trip inspections to detecting and alarming any kind of system issues.

Dimensions of dried Van Trailer
Specs 48 feet high cube dry van 53 feet high cube dried van 
Length 48 feet  53 feet 
Internal Length 47 foot 4 inches 52 foot 4 inches 
Height 13 foot 6 inches 13 foot 6 inches 
Internal Height 9.17 feet 9.17 feet 
Door Opening 9.17 feet elevation 8.18 feet width 9.17 feet elevation 8.18 feet width 
Width 8.5 feet 8.5 feet 
Internal Width 8.225 feet in ~ scuff 8.225 feet at scuff 
Dock Height 4.16 feet 4.16 feet 
Max Capacity 45,000 lbs. 44,000 lbs.
 Dimension the Reefer Trailer
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Typical reefer interior
Spec 48 Feet Reefer 53 Feet Reefer 
Overall Length  48 feet  53 feet 
Internal Length 46 foot 6 inches 51 foot 6 inches 
Overall Height 13 foot 6 inches 13 foot 6 inches 
Internal Height 8.625 feet 8.625 feet 
Door opening Size 8.48 feet 8.48 feet 
Overall Width 8.5 feet 8.5 feet 
Internal Width 8.08 feet scuff 8.08 feet scuff 
Coupler Height 47 inches 47 inches  
Dock height 51.5 inches 51.5 inches 
Max Capacity 44,000 lbs. 43,500 lbs.  

Note: these dimensions are basic dimensions and any certain trailer may have slightly various metrics. And also if you’re wanting to know just how much deserve to a reefer scale? then the max volume rating should administer you with the answer. If you’re wondering just how much go a 53-foot trailer weigh (dry van)? the weighs roughly 15,000 pounds tare weight meaning without any kind of accounted fuel or fill weight. Exactly how much go a reefer trailer weigh? approximately 15,500 pounds tare weight as soon as it is empty.

Concluding Breakdown: Reefer vs dried Van

Both share plenty of similarities yet are yet various at the exact same time as soon as comparing reefer vs dried van trailers . If the in its entirety usage and numbers that trailers is discussed, follow to plot Research, over there are approximately 1.7 million dry vans and close come 400,000 reefers operation in the united States. Dry Vans provide good versatility since they have the right to be supplied for moving numerous kinds of dried bulk. V dry vans, the freight is protected from the elements, damage, theft, and also the trailers are suitable for long-haul runs. However, dried vans with hardwood floors are fragile to damage caused by moisture leakage. Reefers provide many that the benefits that dry vans do yet the ability to deliver perishable items that require heating or cooling is an added bonus. However, reefer malfunctions deserve to spoil the product and also the extra fuel intake of the refrigeration unit adds to the operating costs. Top top the to add side, reefer trailers execute yield greater freight rates.

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