Comprehensive heat supply device and comprehensive heat supply control system and method

The invention discloses a comprehensive heat supply device and a comprehensive heat supply control system and method, and relates to the technical field of heat supply. The comprehensive heat supply device comprises a methanol combustion furnace, a solar device and a radiator; the solar device comprises solar heat pipes, a water accumulation-heat exchange integrated water tank and a coiled pipe, the coiled pipe is located in the water accumulation-heat exchange integrated water tank, and the water accumulation-heat exchange integrated water tank is arranged on the solar heat pipes; and a waterinlet of the radiator is connected with a water outlet of the methanol combustion furnace through a pipeline, a water outlet of the radiator is divided into two branches, one branch is connected withone end of the coiled pipe through a pipeline and provided with a first electromagnetic control valve, the other branch is connected with a water inlet of the methanol combustion furnace through a pipeline and provided with a