We constructed and evaluated the process of the liquid-phase method methanol open cycle system. In this system, the methanol is decomposed by waste heat, and the pipe transportation of the decomposition gas is done, and it is made to burn in the heat demand area directly, and it converts into heat of combustion. It is an important element to clarify the selection of the catalyst which is optimum for the system construction, catalysis performance, catalyst life, recovery of the catalyst and behavior of the by-product of the catalyst in order to study the energy transfer system using chemical reaction. From liquid phase methanol decomposition experimental result, Cu-Cr Mn-Ba catalyst which was optimum for the system construction of the liquid-phase method methanol open cycle system (heat of combustion increase ratio 1.2 at the lower heating value) was found. On the basis of the experimental result, system examination (473 K, 5.86-7.07 MPa) which built in turboexpander and Carina cycle was carried out, and system efficiency in the heat recovery system was estimated with 59.3-73.4% (Carina cycle; 10.6-12.2%) to generate electric power. The liquid-phase method methanol open cycle system can efficiently convert the thermal energy of industry waste heat into chemical energy of heat quantity of the fuel, and can transport over long distance the thermal energy in the condition without heat loss. It was indicated that the liquid-phase method methanol open cycle system was a system for conjugating for the effective utilization of energy resource.