Corrosion resistant shell and tube heat exchanger and a method of repairing the same

An apparatus for exchanging heat between two fluids comprising:

• a plurality of elongated tubes for carrying a first fluid, each tube having a first end and a second end and being formed of a thermally conductive fiber-reinforced polymer matrix material having corrosion resistance and erosion resistance properties;
• a shell means for housing said tubes and for establishing a flow path for a second fluid, said shell means comprising a first tubular member and a second tubular member, each of said tubular members having an inlet end region, an outlet end region and an intermediate region therebetween, said first tubular member being concentrically disposed within said second tubular member, wherein each of said tubular members formed of a thermally insulating fiber-reinforced polymer material having corrosion and erosion resistance properties;
• a first transverse member coupled to said inlet end regions of said tubular members for supporting the first end of each tube, said first transverse member defining a plurality of apertures for receiving a respective first end of a tube and being formed of a thermally insulating cotton reinforced phenolic resin material having corrosion and erosion resistance properties;
• and
• a second transverse member coupled to said outlet end regions of said tubular members for supporting the second end of each tube, said second transverse member defining a plurality of apertures for receiving a respective second end of a tube and being formed of said thermally insulating cotton reinforced phenolic resin material.