GERMANY: Kelvion’s new M-corrugation for its largest GB 1000 series brazed plate heat exchangers is said to be particularly suited to applications in air conditioning or refrigeration systems.
The new M-corrugation (medium corrugation) fits between the H version for maximum specific performance and the L version for low pressure losses.
Kelvion says this new plate is the ideal compromise for many applications. The M corrugation produces a large “thermal length”, so that upcoming heat quantities can be transferred even at the slightest temperature differences. However, it causes lower pressure losses than the H version.
On the other hand, says Kelvion, brazed plate heat exchangers with M-corrugation are more powerful than the same size with L-corrugation. The Kelvion GB 1000M is therefore suited to applications in building services, efficient data centre air conditioning or refrigeration systems.
The M-corrugation makes it possible, for example, to increase the yield of solar thermal systems during seasonal changes, without requiring a high pump capacity.
The plate corrugation also allows the resource-saving operation of heat pumps or refrigeration systems with small temperature differences between the media or optimises the transfer of heat in low-temperature heating systems.
With their large connections, heat exchangers in the GB 1000M series offer the possibility of handling large volume flows of up to 150 m3/h in order to achieve maximum heat transfer values.
Additional features of the GB 1000M heat exchangers are the proven high leakage safety, thanks to the 100% pressure test check as well as a gas leak test at the end of the manufacturing process. In particular, a double sealing provides tightness at the connection points. This involves the nozzles being brazed both on the connection plate and on the first heat exchanger plate, so they are soldered twice.
In addition, Kelvion says the product’s safety chamber takes the misery out of high temperature fluctuations by absorbing thermally-induced stresses, thus reducing the mechanical load on the connections and the heat exchanger.
Equipped in this way, the GB 1000M brazed heat exchangers are suitable for applications ranging from -196ºC to +200°C and, depending on the design, for pressures up to 45bar.