Alfa Laval LNG heat exchanger
Sweden-based Alfa Laval is furthering its commitment to sustainability with its DuroShell plate-and-shell heat exchanger.
Optimised for use as an LNG vaporiser, the DuroShell is said to provide higher thermal efficiency than conventional plate-and-shell designs and can now be used in more compact installations thanks to new research into glycol freezing.
“The continued rise in the number of vessels sailing with LNG is one of the most significant trends in today’s marine industry,” said Jonny Hult, head of marine heat transfer equipment at Alfa Laval.
“With more and more ships relying on LNG as fuel, we are seeing greater demand for vaporiser technology that can dependably resist freezing and the fatigue caused by pressure and temperature. DuroShell is exceptional in this regard.”
With its 100% stainless steel design, DuroShell can resist LNG entry temperatures that approach -170°C or lower.
“Extreme low temperatures are not an issue for DuroShell, but a glycol mix with a freezing point of around -50°C has the potential to freeze when it meets plate surfaces as cold as -90°C,” Mr Hult explained.
“Solving this problem with a higher glycol flow is a very expensive solution for our customers, so Alfa Laval has worked with SINTEF Energy Research to find the correlation of flows on both sides and thereby avoid freezing of fluid on the hot side.”
Mr Hult concluded that this will let shipbuilders use a more compact plate-and-shell design with smaller pumps and pipes, which, in turn, will mean CAPEX and OPEX savings for the ship owner.
LATEST PRESS RELEASES
DESMI Ocean Guard wins Frame Agreement for Supply of Ballast Water Management Systems for the Existing Fleet of French Company Sea Tankers
Aalborg, DK, May 7, 2019 – DESMI Ocean Guard A/S is pleased to announce that Sea Tankers have select... Read more
Vickers Oils has opened its 1,700 square metre state-of-the-art R&D laboratory, as well refurbishing... Read more
Gloryholder has been awarded the contract to design and supply the LNG cargo handling and fuel gas s... Read more
DESMI Ocean Guard’s CompactClean Ballast Water Management System Receives US Coast Guard Type Approval
Aalborg, DK, April 17, 2019– DESMI Ocean Guard A/S is pleased to announce that its CompactClean Ball... Read more
DESMI KaziCat is a true Multi-Purpose Catamaran Vessel despite its compact size; just below 24 meter... Read more
When the UK’s Royal Navy realised that the water pumps for firefighting on a number of its vessels w... Read more