NOVELTY - An electricity generation and hydrogen production linked cyclic system comprises alkali metal thermoelectric conversion sub-system consisting of evaporator (1), high-voltage sodium vapor pipeline (2), alkali metal thermo-electric converter (3), low-voltage sodium vapor pipeline (4) and condenser (5), methanol steam reforming hydrogen production sub-system consisting of reactor, pre-heater, condensation absorber, vaporization super-heater, heat-conducting oil pump, methanol pump, desalted water pump and pressure swing adsorption separation device, and connection pipeline.    USE - An electricity generation and hydrogen production linked cyclic system.    ADVANTAGE - The system is multi-functional energy system with multi-energy (thermal energy and methanol) input and multi-product (power and hydrogen) output, and realizes thermo-electric direct conversion of thermal energy and thermal chemical use of waste heat.    DETAILED DESCRIPTION - An electricity generation and hydrogen production linked cyclic system comprises alkali metal thermoelectric conversion sub-system consisting of evaporator (1), high-voltage sodium vapor pipeline (2), alkali metal thermo-electric converter (3), low-voltage sodium vapor pipeline (4) and condenser (5), methanol steam reforming hydrogen production sub-system consisting of reactor, pre-heater, condensation absorber, vaporization super-heater, heat-conducting oil pump, methanol pump, desalted water pump and pressure swing adsorption separation device, and connection pipeline. The sodium serves as working medium in alkali metal thermoelectric conversion sub-system. The thermal energy is directly converted into electric energy via alkali metal thermo-electric converter. The waste heat of the condenser in alkali metal thermoelectric conversion sub-system serves as thermal source. The waste heat of condenser is converted into chemical energy to be stored in hydrogen via methanol vapor reforming reaction. The methanol steam reforming hydrogen production sub-system is connected with condenser in alkali metal thermoelectric conversion sub-system. The temperature of waste heat of condenser is 400-700 K.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic block diagram of electricity generation and hydrogen production linked cyclic system. (Drawing includes non-English language text).    Evaporator (1)    High-voltage sodium vapor pipeline (2)    Alkali metal thermo-electric converter (3)    Low-voltage sodium vapor pipeline (4)    Condenser (5)