Cuts made on the side plates of the core of various heat exchanger models are not a defect but part of a specific product design incorporated to reduce impact of the thermal stress occurring during heat exchanger operation.
To secure the product’s best performance and extended durability, Nissens’ heat exchangers are designed with several performance and durability features.
One of them is side panel cuts, which may be seen on various models of Nissens’ radiators and intercoolers on the core’s side panel surface. These cuts, however, are not a defect or damage but part of a product-specific design.
Thermal expansion of the material is a normal process during the operation of most heat exchangers.
High and frequent temperature fluctuations, caused by the coolant flowing through the core, causes the material to expand and contract.
The expansion might lead to the core’s structure deformation and the parts’ and welds’ loosening. Thus, the side panel cuts are incorporated into the design to prevent the core’s mechanical failures.
NB! The cuts are designed to leave a free space allowing long core components, such as tubes, to expand without the risk of core breakdown through element decomposition.
The side panel cuts are a solution for securing proper performance and durability, thus a long lifespan of the heat exchanger, when its elements like the core, are subjected to a high-temperature impact. Despite the cuts, the overall function of the component remains unchanged, and the cuts do not affect the flow of the coolant in the core tubes.
Cut design
