Internal combustion engine exhaust gas utilization heat energy power system based on working medium cyclic condensation

Abstract

The invention discloses an internal combustion engine exhaust gas utilization heat energy power system based on working medium cyclic condensation. The internal combustion engine exhaust gas utilization heat energy power system comprises a gasification device, a turbine, a condensation device and a unidirectional hydraulic pump which cyclically communicate with one another in sequence through a circulating pipeline, wherein a circulating working medium is accommodated in the circulating pipeline; the heat collection device is mounted outside the gasification device, and communicates with an internal combustion engine exhaust gas pipe; the gasification device comprises a gasification cavity and a preheating cavity pipe; a pre-condensation cavity is arranged at an exhaust opening of the turbine; and the preheating cavity pipe and the pre-condensation cavity are in contact in parallel. The internal combustion engine exhaust gas utilization heat energy power system based on working medium cyclic condensation can accelerate condensation, improve the efficiency of the turbine and reduce the discharging amount of heat energy, so that the heat energy conversion efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of energy utilization equipment, in particular to a heat energy power system utilizing exhaust gas of an internal combustion engine based on circulating condensation of working fluid. Background technique [0002] Energy is an important material basis for the survival and development of human society. Throughout the history of the development of human society, every major progress of human civilization is accompanied by the improvement and replacement of energy. The development and utilization of energy has greatly promoted the development of the world economy and human society. [0003] However, with the continuous development and consumption of energy, non-renewable energy sources such as petroleum, coal mines, and natural gas are gradually reduced, and energy conservation and recycling are gradually being valued. The basic content of my country's current energy strategy is: adhere to the priority of conservation,...

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Problems solved by technology

[0007] However, the common problems of existing thermal power generation equipment are: a. The temperature at the exhaust port of the turbine is relatively high, resulting in high pressure at the exhaust port, and the work conversion efficiency of the turbine is low; b. The heat displacement of the condensing device is relatively large , the waste of heat energy is large, the condensation speed through natural condensation is slow, and the active condensation method (fan air cooling or liquid pump water cooling) requires additional power consumption; c. The temperature requirements for high-temperature heat sources are high, generally above 200 ° C, and The thermal energy conversion efficiency is low, and the thermal energy conversion efficiency is generally 15% to 35%; d. Gasification heat absorption is slow, and the output power of the thermal energy machine is relatively small; e. The heat collection effect of the heat collection device is not good, and the external waste heat absorption rate is small , f. The gasification temperature of the working fluid is unstable, the condensation effect of the working fluid is not good, and the working fluid is easy to deteriorate or appear impurities

[0008] On the other hand, the thermal energy conversion efficiency of the existing internal combustion engine is about 45%, and the exhaust temperature of the internal combustion engine exhaust gas can be as high as 400°C, and there is a large energy waste in the exhaust emission.

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