RADIATOR AND HEAT EXCHANGER REGENERATION
Radiators and heat exchangers: what are they?
• A vehicle's radiator is a device that allows the exchange of heat between two fluids and is used to stabilize the temperature of the engine's coolant, often exploiting the air currents that strike the moving vehicle.
Similarly, it is also used for opposite purposes, that is, to heat the passenger compartment, maximizing the heat release from the superheated liquid circulating inside it.
Made up of a radiant mass made up of numerous tubes placed side by side, it is able to increase heat exchange in relation to its size (the larger the surface area of the radiant mass, the higher the heat exchange capacity).
• Heat exchangers are devices designed to facilitate the exchange of thermal energy between two fluids at different temperatures, allowing the passage of heat from the heat-transfer liquid to another heat-receiving liquid.
These are chemical devices widely used in the industrial sector as well as in vehicle radiators which, through different technologies, have evolved over time.
In cars, the exchangers work with oil and are an integrated component of the radiator cooling circuit.
The engine oil is cooled while it is contained in the special sump, which is positioned below the bodywork, to maintain constant contact with the wind.
In this way the exchanger is able to exploit a natural and very effective form of energy.
How does the heat exchanger work?
Depending on the type of contact with the current, exchangers can be of five types, namely:
• direct contact exchanger, when the fluids that change color come into direct contact with each other;
• indirect contact exchanger, if the fluids do not come into direct contact with each other but are separated by a surface crossed by the heat flow;
• mixed exchanger, when a preliminary mixing of the fluids occurs which are then brought to the same temperature;
• surface exchanger, which is the most commonly used type, in which the currents absorb heat from the separation surfaces through which the fluids flow;
• direct radiation exchanger, which uses heat in the form of radiant energy.
In the automotive industry, heat exchangers are used to cool or heat the passenger compartment.
What are the main interventions on the exchanger?
The auto exchanger is made up of a series of metal plates that form two separate circuits: for it to function at its best, it is essential that the seal of the plates does not deteriorate.
The main cause of such a malfunction is related to the oil (when it is not of good quality) or to the habit of using water instead of coolant (a condition responsible for the oxidation of the plates).
Even infrequent oil changes or the use of oils unsuitable for the type of vehicle, combined with the repeated presence of thermal or mechanical stress, are factors that can cause the device to break.
It's not easy to tell when the exchanger has broken, and for this very reason, it's important to contact specialized technicians who can identify the problem using specific equipment.
CDR, in Italy, is a leading company that builds and repairs automotive heat exchangers using the SuperAction® patent, an exclusive regeneration process.
To check whether the oil is not flowing properly through the cooling channels, technicians must bypass the circuit for a certain period of time, during which the flow of coolant to the engine is cut off.
This is a specialized intervention that can precede the attempt to dismantle the exchanger to wash it and subject it to the traditional pressure tightness test.
You can try to bypass the oil-water heat exchanger by performing a repair that allows you to check the engine's operation at much higher temperatures.
The most comprehensive but also most demanding procedure, which yields the best results, involves flushing the refrigerant circuit and then refrigerating it after identifying the faulty circuit.
If these options prove ineffective, the option of replacing the used exchanger with a new one remains valid.
How to regenerate car radiators
Car radiator regeneration involves completely disassembling the device, cleaning it, grinding it, and desoldering it. The individual components are then sandblasted and treated with anti-corrosion and anti-wear products to increase their durability.
Subsequently, we proceed with re-welding after targeted reinforcement interventions on the points that have shown functional deficits.
Following the assembly of such reconstructed devices, a practically new product is obtained, tested with special machinery that ensures its reliability.
CDR owns the exclusive SuperAction® patent, which is used to enhance the radiant masses and obtain larger radiators with superior performance.
This service is especially advantageous for its customization, which allows operations to be adapted to the individual needs of the vehicle.
After a functional test aimed at assessing the radiator's performance, a three-year warranty is issued.
This exclusive radiator and heat exchanger regeneration process, which is offered by CDR, makes the equipment as good as new.
Remanufactured car radiators offer customers all the guarantees they need, both in terms of functionality and longevity of the devices, always referring to a personal repair code that allows the type of work performed to be identified at any time.
The company also provides 24-hour SOS assistance, which can be contacted by filling out the form on the website.
Operations of this kind guarantee significant savings, capable of containing expenses up to 80% compared to the cost of new appliances.
What does SuperAction® consist of?
In keeping with its corporate philosophy, focused on environmental protection and energy saving, CDR Italia has patented a series of exclusive treatments, including SuperAction®, which is aimed at regenerating radiators and heat exchangers.
During these operations, the devices are completely dismantled into all their parts and reconditioned until they are as good as new, using state-of-the-art machinery; each intervention is certified by the company.
The advantages offered by SuperAction® concern first of all the greater longevity of the heat exchanger, whose performance continues for double the time compared to the initial conditions.
Furthermore, you can obtain real savings on both ordinary and extraordinary maintenance (repairs for any faults).
The regeneration also includes the reinforcement of all parts subjected to the SuperAction® treatment, which follows a meticulous analysis of the entire mechanical components.
The regeneration process is aimed at ensuring maximum performance of the heat exchangers when they show any problems, especially those deriving from the accumulation of limescale during the water/air exchange.
Thanks to scheduled maintenance interventions, it is possible to avoid compromises of the appliances not only in terms of performance but also in terms of safety.
To contact CDR, simply fill out the form on the website, where you can receive a free consultation.
To contact the CDR company, simply fill in the form on the website, which allows you to request a free consultation or quote.