Marefsol is one of the leading designers and suppliers of shell and Tube heat Exchangers and has designed and delivered equipment for:

Marine applications, process and off shore industry. 90% of the equipment that has been delivered by Marefsol, is tailor made for refrigeration purposes and delivered to customers all over the world


  • Long term experience and knowhow of Natural refrigerants
  • Low oil carry over due to the application of high efficiency oil separators
  • Complete delivery and assembly of the package, incl.complete 3D design engineering by MAREFSOL BV
  • Tailor made solutions to the requirements of the Customers
  • Delivery incl, P&ID, itemlists and Manuals
  • Delivery including CE-PED declaration of conformity or certification by ships classification society

Titanium Heat Exchangers

Marefsol has great reputation and experience with the production of Titanium Heat exchangers. This material has a very good corrosion resistance and is in many cases applied aboard of seagoing vessels or in the process industry when a corrosive media is to be cooled or heated. Titanium Heat Exchangers Welding of Titanium is a critical job as the welding process is sensitive to draft. Therefore it is common to weld the material in a so called clean room. Welding of the pipes is performed by orbital welding.

CuNi Heat Exchangers

Additionally we have delivered many Cupro Nickel Heat Exchangers such as condensers, seawater coolers or other applications for which CuNi Heat exchangers were required. Besides the heat exchangers we also deliver CuNi Marine boxes for Cruise vessels.

Technical information

Marine, Offshore and shore
Dimensions & Capacities
To customers requirements
Refrigeration data:
Ammonia, HFC’s, CO 2 , Propylene
Brine, Glycol, etc.
Design temperatures
From -50 °C and higher
Design Pressure
Up to 100 Bar
Quality assurance :
Quality assurance :
As pressure vessel and Heat Exchanger Manufacturer
Quality Management System
UNE-EN-ISO 9001:2000
According the requirements of Annex III, Module H&H1 of the Pressure Equipment Directive 97/23/EC. Certified by Lloyds Register
Certified by Classification societies
Det Noske veritas ; Class I& II Certification
Lloyds Register of Shipping; Certification according to class 1, 2.1 and 2.2.
Germanischer Lloyd; Pressure ves- sels welding Certification
Bureau Veritas; Mode II Surveyor certification
Thermal design
Mechanical design
According design code
Product data :
Coolants, gasses, (Sea) water.
To customers requirements
Pipes (o.d)
19,05 & 25 mm (Standard)
Fined tubes
For Copper and Copper alloys
Processed materials
Cu, Fe
CuNi 90/10
CuNi 70/30
Admirality Brass;
Stainless; AISI 304, 316L, 316Ti
Super duplex; SAF2205, SAF2507
Covered standards, design codes
Standards and design codes
ASME (U-Stamp)
AD Merkblatter
Classification societies
Classification societies American Bureau of Shipping Bureau Veritas Det Noske Veritas Germanischer Lloyd Lloyds Register of Shipping Russian register of Shipping Registro Italiano Navale Nippon Kaiji Kyokai Korean Register of Shipping Indian register of Shipping