Abstract: A heating medium composition for solar thermal power generation system, the heating medium composition including a silane coupling agent represented by formula (1) shown below and a heating medium containing diphenyl ether: (1) wherein each of OR1, OR2 and OR3 may be the same or different, and represents an alkoxy group of 1 to 5 carbon atoms, and X is a group selected from a 3-glycidoxypropyl group, a 3-methacryloxypropyl group, a 3-aminopropyl group, an N-phenyl-3-aminopropyl group and an N-2-(aminoethyl)-3-aminopropyl group.

Abstract: A heating medium composition for solar thermal power generation system, the heating medium composition including a silane coupling agent represented by formula (1) shown below and a heating medium containing diphenyl ether: (1) wherein each of OR1, OR2 and OR3 may be the same or different, and represents an alkoxy group of 1 to 5 carbon atoms, and X is a group selected from a 3-glycidoxypropyl group, a 3-methacryloxypropyl group, a 3-aminopropyl group, an N-phenyl-3-aminopropyl group and an N-2-(aminoethyl)-3-aminopropyl group.

Abstract: The invention relates to a portable mixing platform for producing a heat-transfer fluid on site and on an industrial scale, said fluid consisting of a eutectic mixture of diphenyl (DP) and diphenyl oxide (DPO). The platform includes a device that stores DPO in liquid state, a device for supplying DP in solid state, a mixing device in which both components are mixed in liquid state and in the right amount for forming a eutectic mixture, and a device for inerting and treating gases which maintains the DPO and mixing devices under inert atmosphere, as well as drawing the gases vented from both devices to pass said gases through an activated-carbon filter prior to expelling same into the atmosphere. The present invention also relates to the method for producing the eutectic mixture of DP and DPO using the described portable mixing platform.