Carnot-Rankine dual-cycle hybrid efficient power generating equipment

Abstract

The invention provides Carnot-Rankine dual-cycle hybrid efficient power generating equipment. The power generating equipment comprises a Rankine cycle circuit and a Carnot cycle circuit, wherein the Rankine cycle circuit comprises a water feed pump, a high-pressure steam boiler, a heat-work power conversion machine, a condenser and a gas-liquid separator which are sequentially connected into a ring; the Carnot cycle circuit comprises a group of compressors which are connected in series sequentially and a heat exchanger, and a cooler is arranged between every two compressors; and an inlet of the group of compressors is connected with a gas outlet of the gas-liquid separator, and an outlet of the heat exchanger is arranged between the high-pressure steam boiler and the heat-work power conversion machine. According to the equipment, the Rankine cycle and the Carnot cycle are directly combined, and the low-efficiency Rankine cycle is improved by using the advantage of high efficiency of the Carnot cycle, so that the heat efficiency of the Rankine cycle is increased substantially.

Description

technical field [0001] The invention belongs to the field of power equipment, in particular to a Carnot-Rankine double-cycle hybrid power generation equipment. Background technique [0002] The power industry is a major energy-consuming household in my country. The energy consumption of the power industry accounts for about 1 / 3 of the country's total energy consumption, and sulfur dioxide emissions account for half of the country's total. The national power generation in 2011 was 4.7 trillion kWh, of which thermal power generation was 3.8 trillion kWh. Since thermal power in China is basically coal power, coal power accounts for about 80% of the total power generation. In 2011, thermal power consumed 1.9 billion tons of primary energy (standard coal), and the national coal consumption was 3.57 billion tons. Coal consumption in the power industry accounted for more than 50% of the country's total coal consumption. China's coal-fired power plants have low efficiency in conver...

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Problems solved by technology

The higher the temperature of the steam, the higher the ratio of sensible heat to latent heat of condensation, and the higher the thermal efficiency of the Rankine cycle, so increasing the temperature of steam is an effective means to improve the efficiency of thermoelectric conversion; however, there is a problem of high pressure when steam operates at high temperature, In actual use, due to the strength of equipment materials, the increase of steam temperature is limited, which inhibits the improvement of thermal efficiency of Rankine cycle thermal power generation equipment

The second is to reduce the emission of condensation heat. However, this method can only be achieved theoretically and has little practical application.

Although the thermal efficiency of the Carnot cycle is high, it is difficult to realize a heat engine that works completely according to the Carnot cycl

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