Thermoelectric Power Generation Applied Feasibility On The Ship

With the continuous development of modern shipping technology, energy saving of ships is concerned widely by shipbuilding and shipping industries. Plenty of low temperature exhaust gas from ships is discharged directly into atmosphere, which causes that environment is polluted seriously and most of waste heat is wasted. If it is possible for us to utilize fully waste heat, shipping industry profits will be increased, and meanwhile problem of pollution will be solved. At present, thermoelectric power generation and thermoelectric refrigeration technologies are quite mature so application of these technologies on ships has been studying by many researchers, and there is big breakthrough in studying. However, exhaust gas waste heat has not been utilized fully due to various constraints. Study on waste heat thermoelectric power generation is carried out in this paper, and the following aspects were discussed:First of all, according to steady-state heat conduction equation, thermodynamic analysis of funnel pipe is carried out, funnel pipe model is established, boundary conditions of funnel pipe is determined and temperature field distribution situation of funnel pipe is calculated by using ANSYS software, all of work is prepared for research of funnel waste heat thermoelectric generation.Secondly, based on analysis model of the thermoelectric unit, actual model of thermoelectric devices is established by use of ANSYS software, actual boundary conditions is applied according to actual working state, temperature and electric field distribution regularity of model is obtained, consequently loop current, output power and thermoelectric efficiency of thermoelectric devices is acquired. Model is calculated according to different input temperatures, so principle that thermoelectric performance parameters vary with different hot end temperatures is acquired.Finally, a geometric model of funnel waste heat power generation is established, and the model is simplified. Boundary conditions and finite element model of funnel waste heat power generation are established. Performance of funnel waste heat power generation is analyzed, and total generation capacity produced by exhaust gas from generator diesel engine is calculated. Economy of ship waste heat power generation is also analyzed, and measures used to improve total generation capacity are proposed in this paper. Feasibility plan of ship waste heat power generation is proposed, economic and technological factors are considered in the plan.In this paper, funnel waste heat power generation is simulated and calculated in condition of different boundary conditions and material parameters by using ANSYS software. Analytical results contribute to economic analysis of thermoelectric devices waste heat power generation.