Converting a van into a used freezer van should be undertaken as a DIY project. There are many things at stake, especially if you are dealing with items for human consumption. A poorly converted van could end up being harmful to your clients, and the reputation of your organisation can be adversely affected.
At Glacier Vehicles, we convert vans using an insulation lining kit with 75mm thick material. Our used freezer vans have two chief elements: the mechanical cooling part, and the insulation part. The function of the mechanical cooling system is to extract heat that has accumulated inside the chamber of the van, while insulation prevents external heat from coming in. Mechanisms such as the compressor, evaporator, and condenser cannot function without insulation.
Thermal insulation is a key element of a used freezer van because it helps in the reduction of heat transfer. There are so many cheap insulation materials in the market today that aren’t suitable, and can be detrimental to your business if they’re installed in your fridge van.
At Glacier Vehicles we pride ourselves on offering the best-quality freezer vans for sale. The insulation material used in our temperature-controlled vehicles is much denser than that used in household freezers. The entire surface area of our used freezer vans is framed with thick layers of impenetrable polymer foam that prevents external heat from getting into the cooling compartment.
Once the insulation foam has been fitted, the inside is then further padded with a coating that prevents the polymer foam from getting destroyed while storing and unloading your merchandise from the van.
There are two distinct types of protective coating:
- Wet lay: This coat is like resin flooring – it uses a liquid polymer that solidifies immediately upon contact with air. Once this coat is dry, it turns into a tight and smooth white layer that is 100% hygienic and washable.
- Dry lay: This coat is somewhat different from the wet lay. It involves installing solid tiles in the insulated compartment. Dry lay is less efficient because it doesn’t fill in gaps in the same way as wet lay does. After installation, there are tiny spaces between the tiles which can easily foster mould and bacteria.
Our vans use a direct drive mechanism to run the refrigeration compartments, using the power generated by the vehicle’s engine. The freezer unit in our used freezer van is simple enough that anyone can understand how to use it. On the interior cover of the freezer van, you will find an evaporator, a compressor, and a condenser arranged in a case.
The condenser, which is similar in shape to a radiator, functions as a backward radiator. Instead of emitting heat, it sucks up and traps heat into a thin metal pipe which is filled with a coolant liquid that circulates through it. The liquid is then transformed into a gas as it heats up, and is transferred to the compressor. The compressor compresses the gas until it reaches high pressure, and then passes it to the evaporator.
The evaporator’s job is to maintain a low temperature in the van by forcing external air through the pressured gas, which then chills, turning it back into a liquid, which is cycled back through the system. The accumulated heat in the thin metal pipe of the condenser is then discharged into the environment.
The freezing units in each of our used freezer vans at Glacier Vehicles have high standards of reliability and safety, allowing our chilling compartment to maintain precise conditions of around 30⁰C to -18⁰C. We install temperature data logging units that actively record the temperature level of the van, and they can be found in the loading space of our freezer van.
We use lightweight, durable and hard-wearing GRP sheeting stuffed with a roving coating to cover the surface of the insulation. This allows us to minimise the van’s weight, which is better than using large timber components. During this process, the durability and strength of our vans are not jeopardised. We can also fit extra finishing options of your choice, and a load-bearing floor panel. The inner surface of the insulated panels will be the only visible part, as we install treated wood boarding that prevents rot and keeps your cargo safe.