Gas working medium circulation energy-saving device in power generation heat engine

Abstract

The invention discloses a gas working medium circulation energy-saving device in a power generation heat engine. The device comprises a low-temperature low-pressure working medium gas pressure vesseland a high-temperature high-pressure working medium gas pressure vessel, wherein the low-temperature low-pressure working medium gas pressure vessel is connected with the high-temperature high-pressure working medium gas pressure vessel, a gas compressor is mounted in the low-temperature low-pressure working medium gas pressure vessel, an exchange cavity of high-temperature low-density gas and low-temperature high-density gas is mounted in the high-temperature high-pressure working medium gas pressure vessel, a free separation piston is arranged in the exchange cavity of the high-temperature low-density gas and the low-temperature high-density gas, and a refrigerating compressor, an evaporator and the like of a reverse Carnot cycle refrigerating system are mounted in the low-temperature low-pressure working medium gas pressure vessel. Through the device, energy consumption during circulation of the working medium gas compressed by the gas compressor is reduced, and the energy-saving effect is obvious.

Description

technical field [0001] The invention relates to the technical field of power generating heat engines, and more specifically, to an energy-saving device for circulating a gas working medium in a power generating heat engine. Background technique [0002] At present, the working fluid gas circulation technology in the heat engine system has the following problems: [0003] All kinds of low-pressure working fluids are directly compressed and cycled back to the high-pressure area by the compressor, which will consume a lot of high-quality work. High-quality work such as the electrical energy and mechanical energy output by the system will consume the external output of the heat engine system. Net power, resulting in low thermal efficiency, generally low thermal energy utilization. For example, industrial waste heat power generation heat engine systems, geothermal power generation systems, high-temperature steam thermal power generation systems, etc., currently have low comprehe...

AI Technical Summary

Problems solved by technology

[0003] All kinds of low-pressure working fluids are directly compressed and cycled back to the high-pressure area by the compressor, which will consume a lot of high-quality work. High-quality work such as the electrical energy and mechanical energy output by the system will consume the external output of the heat engine system. Net power, resulting in low thermal efficiency and generally low utilization rate of thermal energy

For example, industrial waste heat power generation heat engine systems, geothermal power generation systems, high-temperature steam thermal power generation systems, etc., currently have low comprehensive thermal efficiency and poor economic benefits, and have not been widely used, and industrial waste heat power generation heat engine systems and geothermal power generation systems exist The minimum operating temperature limit of thermal energy is mostly required to be above 60°C, and the utilization rate of thermal energy by the system shall not exceed 20%.

The temperature of the waste heat released by the high-temperature steam thermal power generation system during operation is mostly higher than 60°C, so the waste heat is not used, and the whole system will release heat to the external environment during operation, resulting in heat loss

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