New Compact Heat Exchanger From Kelvion
By Jack Burke14 July 2020
Kelvion said its new ComFinSafety heat exchanger merges the company’s double tube safety technology with its compact fin system.
This system is designed for applications requiring high safety levels, combined with a compact design and where the media properties are significantly different, such as oil cooling by water. Applications include power, grid, marine, transportation, heavy industry or HVAC, the company said.
Since 1974 Kelvion has been developing double tube safety heat exchange technology for industries and applications where preventing media mixing in the event of a leak is critical. They include transformer cooling systems, chemical and gas treatment and machine cooling onboard ships and in hydropower plants.
The ComFinSafety systems expand Kelvion’s shell & tube heat exchanger portfolio in terms of cost efficiency and compactness, the company said. It is available in both standardized and customized coolers in the product lines Shell & Tube Double Safety and Transformer Cooling Systems (Transformer Oil Water Coolers).
The tube system consists of copper outer tubes and inner tubes which can be manufactured from CuNi alloys or stainless steel, with an optional inside coating. Between inner and outer tube there are leakage channels, connected to a leakage detection system which triggers an alarm in the case of leakage. In such a case, one of the tubes would be damaged – the other tube would continue working.
The compact fins are made of aluminum or copper. Fin pitches are available in variable configurations. Tube bundles come in diameters of 100 – 600 mm and lengths of 250 – 3600 mm. The heat exchangers are designed for a pressure of up to 60 bar g and temperatures between -10°C and 200°C. Water, sea water, oil, refrigerants or air can be used as media.