System capable of generating electricity by using low-temperature heat energy

Abstract

The invention discloses a system capable of generating electricity by using low-temperature heat energy. The system comprises a high-temperature high-pressure working medium gas pressure vessel and alow-temperature low-pressure working medium gas pressure vessel which are connected, wherein a refrigeration compressor of a reverse Carnot cycle refrigeration system is arranged in the low-temperature low-pressure working medium gas pressure vessel; an evaporator of the inverse Carnot cycle refrigeration system is arranged in the low-temperature low-pressure working medium gas pressure vessel andis connected to the refrigeration compressor; a radiator of the reverse Carnot cycle refrigeration system is arranged in a working medium storage chamber of an artificial second heat source substancestorage chamber, and pressure potential energy is generated by using a pressure difference between a high-pressure chamber and a low-pressure chamber and is converted into electric energy through anenergy conversion system and the like; the invention provides a new low-temperature heat energy power generation system structure and heat engine cycle and energy-saving ideas, a purpose of generatingthe electricity is realized, a reference for the design idea of the new low-temperature heat energy power generation system is provided for the field, and the progress and application and popularization of the low-temperature heat energy power generation technology are promoted.

Description

technical field [0001] The invention relates to the technical field of low-temperature thermal energy power generation, and more specifically, relates to a system for generating electricity using low-temperature thermal energy. Background technique [0002] Low-temperature thermal energy mainly refers to low-grade thermal energy, generally with a temperature below 200°C, such as industrial waste heat, domestic waste heat, solar thermal energy, temperature difference, geothermal energy, etc. At present, people are mainly concerned about the high-efficiency cycle application of low-temperature thermal working medium, such as the use of mixed working medium cycle, regenerative cycle, ammonia absorption dynamic refrigeration cycle, Kalina cycle, etc., and research and optimization of heat engine control systems, etc. For example, the document "Experimental Research and Analysis of Heat Pump Low-temperature Heat Energy Recovery Unit" (Author: Zhang Shumi, Journal: Clean and Air-C...

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Problems solved by technology

Patent Documents 1 to 3 all disclose three different low-temperature thermal energy power generation system structures, providing different low-temperature thermal energy power generation solutions, but there are still problems that are not involved. The high-efficiency absorption heat pump amplifies and doubles the heat energy, and sends it to the evaporator to generate high-pressure gas. This process itself consumes a lot of power, and this part of power consumption will eventually affect the power generation efficiency; Patent Document 2 realizes the recycling of small and trace heat sources. However, the circulation path is relatively single, and the circulating waste heat of the working fluid gas is not effectively utilized; Patent Document 3 can reduce industrial heat emissions, but it is not effectively recycled, and requires a high external working temperature environment, which is difficult to apply to lower temperature waste heat recovery. Moreover, the whole system will generate a lot of heat loss due to heat release to the external environment when it is working.

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