Heat-transport medium including latent heat storage material, mixture for heat transport, and heat transport method

A heat transport medium to be transported with a fluid that is liquid in an operating temperature range, the heat transport medium comprising:

• a porous material having pores and
• a latent heat storage material penetrated in the pores of the porous material,
• wherein the porous material has a liquid repellency to the fluid, an affinity for the latent heat storage material, an open-cell structure, macropores having an average pore size of 3 to 200 μm, an apparent density of 0.05 to 0.5 g/cm3, and a sponge hardness of not more than 50,
• the porous material has a polyorganosiloxane skeleton containing a difunctional unit and a tri- or more-functional unit and the molar ratio of the difunctional unit relative to the tri- or more-functional unit is 1/10 to 5/1, and
• the latent heat storage material is incompatible with the fluid and has a melting point within the operating temperature range.