NOVELTY - A heat-absorption emission capsule (10) comprises a film-like capsule wall (1) which forms sealing space inside, and a phase-transition substance (2) (70 vol.% or more) dissolved in a water-soluble intermediate agent, sealed by the sealing space of capsule wall.    USE - For manufacture of heat absorption emission capsule dispersion liquid (both claimed) used as coolant of fuel cell and automobile engine, and heat transfer medium of thermal storage system.    ADVANTAGE - The heat absorption emission capsule has high content of phase transition substance, and provides heat absorption emission capsule dispersion liquid and heat absorption emission agent with large thermal capacity and high heat absorption emission capability.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacture of the heat absorption emission capsule, which involves dispersing phase transition substance in non water-soluble intermediate agent and forming a dispersion liquid, mixing polymerization initiator, monomer of capsulation agent and dispersion liquid, carrying out polymerization of monomer in the surface of phase-transition substance and non-water-soluble intermediate agent, and forming capsule wall on the phase transition substance;    (2) heat absorption emission capsule dispersion liquid comprising a dispersion medium and the heat absorption emission capsule dispersed in the dispersion medium; and    (3) manufacture of the heat absorption-emission capsule dispersion liquid, which involves substituting non water-soluble intermediate agent in capsulation dispersion liquid and water-soluble dispersion medium, and dispersing heat absorption emission capsule in the water-soluble dispersion medium.    DESCRIPTION OF DRAWING(S) - The figure shows the model sectional drawing of the heat absorption-emission capsule. (Drawing includes non-English language text)    Capsule wall (1)    Phase transition substance (2)    Heat absorption emission capsule (10)