• Seawater is a very stable and reliable cooling source in marine cooling
• Seawater quickly leads to fouling of the cooling system
• Seawater presents major cleaning challenges

• No lack of cooling capacity in critical situations
• Replace elements within minutes
• Clean cooler within an hour
• Maintenance cost reduced by 90%
• No need for expensive service personnel

• Performance just as good as for conventional plate heat exchangers in terms of heat transfer and pressure drop
• The same potential for leakage control and detection as an in-line seawater filter
• The principles of the framework, dimensions and port positions are harmonized with the standards for plate coolers
• Easy to replace a plate cooler with a Sperre Pleat cooler

• Consists of a small number of robust elements
• Lightweight elements with handles are designed for easy handling
• Can easily be cleaned with a high-pressure spray
• Dismantling is not needed.
• Reduces gaskets and replacement parts to a minimum
• No need for expensive expertise to perform maintenance
• Ensures on-going operation for the vessel

• One Sperre Pleat cooling element replaces about 15 to 20 plates in a conventional plate cooler
• Simplifies the maintenance operation from individual cleaning and probably gasket replacement for 15 to 20 plates
• Single high-pressure wash of one element
• Easy to replace elements as needed

• A day's work for one or two people for maintenance of a medium-sized plate cooler
• With Sperre Pleat technology, the job takes less than an hour for one person
• Requires no special qualifications

High efficiency

• Maintenance involves dismantling, high-pressure cleaning, and assembly of a few robust elements that are very easy to get watertight again
• Requires no special qualifications

• Leakage following the assembly of conventional plate coolers is a well-known problem
• With old and worn gaskets, ever greater pressure between the plates is needed to prevent leaks
• This problem is eliminated in a Sperre Pleat cooler because the sealing pressure between the robust cooling elements is ideal when the surfaces of the frames are in contact with each other

• The basic design of the technology involves transferring heat between two fluids, separated by a thin titanium layer
• To achieve a very large surface within a minimal volume, the titanium sheet is pleated into one element

• The element consists of pleated titanium in which the gap between the wall of each pocket forms the channels for the flow
• The titanium element is embossed with a pattern that increases the strength and the efficiency of the cooler

• The pleated titanium element is the core of the Pleat technology, and forms the starting point for refinement as a marine cooler

• After pleating and embossing, the titanium element is sealed at the ends
• To achieve this, the element is lowered into special casting moulds, and a permanent sealing compound is applied

• The sealed elements are placed in frames that contribute physical strength and ensure all the necessary distribution of fluid
• The sealed titanium element is mounted between two frame halves with specially designed gaskets

• One Sperre Pleat cooling element replaces about 15 to 20 plates in a conventional plate cooler

• 4 elements and 5 gaskets in a Sperre Pleat cooler (left) replace 60 plates and the corresponding number of gaskets in a plate cooler (right)

• Features like a plate heat exchangers
• Unique maintenance friendliness
• Easy to change or alternate cooling elements