Heat exchanger module and methods of using thereof

A heat exchanger module comprising:

• a) a thermally conductive support comprising a surface defining a plane;
• b) at least one thermally conductive hollow tubular member having its longitudinal axis substantially parallel with the plane;
• c) a thermally conductive matrix at least partially embedding the at least one tubular member, the conductive matrix being supported by the support;
• and
• d) a case at least partially enwrapping the support, the at least one tubular member and the conductive matrix,
• wherein the heat exchanger module is flexible, wherein the at least one tubular member comprises at least two elongated hollow bodies or body sections such that a minimum normalised spacing between the elongated hollow bodies or body sections is defined as s/d, where s is the centre-to-centre spacing between any two adjacent elongated hollow bodies or hollow body sections and d their external diameter, and wherein s/d is at least 6.