Waste heat utilization internal combustion heat engine

Abstract

The invention discloses a waste heat utilization internal combustion heat engine, which comprises a compressing mechanism, an acting mechanism, an internal combustion chamber and a heat exchanger, wherein the working medium outlet of the compressing mechanism is communicated with the heated fluid inlet of the heat exchanger; the heated fluid outlet of the heat exchanger is communicated with the working medium inlet of the acting mechanism through the internal combustion chamber; the working medium outlet of the acting mechanism is communicated with the working medium inlet of the compressing mechanism through a cooled fluid passage of the heat exchanger to form a working medium closed circulation loop; a working medium guide outlet is arranged on a communicating channel between the heat exchanger and the working medium inlet of the compressing mechanism; and the bearing capacity of the working medium closed circulation loop is greater than 0.5MPa. According to the waste heat utilization internal combustion heat engine disclosed by the invention, the problem that the efficiency of the heat engine is influenced due to the fact that the working medium temperature and pressure of a traditional heat engine are hard to reach a higher level is solved. The waste heat utilization internal combustion heat engine has the characteristics that the efficiency is high, and the energy is saved.

Description

[0001] technical field [0002] The invention relates to the field of thermal energy and power, in particular to a heat engine. Background technique [0003] In recent years, heat generators have been widely valued. However, traditional heat generators are powered by external combustion heating. The external combustion method requires heat transfer through heat transfer components (usually the wall of the heated container). The mass is heated, and a large part of the heat is dissipated in the environment during the external combustion heating process, and the external combustion heating method is limited by the pressure and temperature resistance of the heat transfer wall, the heat transfer efficiency is limited, and the temperature and pressure of the working fluid are difficult. To reach a higher level, so that the efficiency and power density of the traditional heat engine is severely limited, therefore, it is necessary to invent a new type of heat engine. Contents of ...

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Problems solved by technology

[0004] The invention provides a waste heat utilization internal combustion heat engine with high efficiency and power density, which solves the problem that the efficiency and power density of the traditional heat engine are difficult to reach a higher level due to the temperature and pressure of the working medium, and adopts heat exchange at the same time The method transfers the heat of the gas with a high temperature when the work is completed to the gas with a lower temperature that is about to enter the internal combustion chamber after being compressed by the compression mechanism, so that the temperature of the gas with a lower temperature that is about to enter the internal combustion chamber can be increased, and at the same time When the work is done, the temperature of the hot gas is reduced, so that the energy of internal combustion can be fully utilized

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