Device for converting low-temperature heat energy into mechanical energy and using method thereof

Abstract

The invention relates to the technical field of heat engines, in particular to a low-temperature heat energy conversion mechanical energy device which comprises an ammonia heat exchange unit and a pneumatic device for converting heat energy exchanged by the ammonia heat exchange unit into mechanical energy. The ammonia heat exchange unit comprises a plurality of heat energy units connected in series and a container; the heat energy unit is a heat regenerator, an ammonia water heat exchange pipe and a heat source heat exchange pipe are arranged in the heat regenerator, and heat source outlets and heat source inlets of every two adjacent heat regenerators are communicated; the liquid outlets and the liquid inlets of the ammonia water heat exchange pipes in the two adjacent heat regenerators are communicated with each other; a plurality of heat energy units are connected in series and combined, each heat energy unit comprises a heat regenerator, a heat source heat exchange tube and an ammonia water heat exchange tube, and the heat source heat exchange tubes transfer heat energy of hot fluid to the heat energy units; the multiple heat energy units are connected in series and connected with the pneumatic device through the container, high-power equipment operation requirements are met, the structure is simple, and later maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of heat engines, in particular to a low-temperature thermal energy conversion mechanical energy device and a method for using the same. Background technique [0002] At present, low-temperature thermal energy refers to thermal energy of relatively low grade, generally lower than 200°C. These energy sources are of various types, including solar thermal energy, various industrial waste heat, geothermal energy, ocean temperature difference and other renewable energy sources; the total amount is huge, with industrial waste heat as the For example, according to statistics, 50% of the thermal energy utilized by human beings is ultimately discharged directly in the form of low-grade waste heat; the utilization and recovery of this part of energy has a non-negligible impact on energy conservation and emission reduction. [0003] Traditionally, the organic cycle is generally used to realize the conversion of thermal ...

AI Technical Summary

Problems solved by technology

[0003] Traditionally, organic cycles are generally used to convert thermal energy to mechanical energy, but a large amount of thermal energy needs to be taken away in the liquefaction of organic working fluids, so the overall efficiency is not high;

Images