Heat pipe type solar energy ORC (organic Rankine cycle) low-temperature thermal power generating system

Abstract

The invention relates to a heat pipe type solar energy ORC (organic Rankine cyle) low-temperature thermal power generating system which comprises an ORC power generating system, a heat storage system and a heat pipe collector system. The power generating system comprises working medium evaporation sleeves, a turbine, a power generator, a heat regenerator, a condenser and the like. The heat pipe collector system is composed of more than three heat pipe collector modules; each module includes a heat pipe, a vacuum pipe and a CPC (composite parabolic) reflector; the condensing section of the heat pipe is embedded in the working medium evaporation sleeves, and the evaporating section of the heat pipe is arranged at the bottom part in the CPC reflector; and the more than three working medium evaporation sleeves are connected in series. In the invention, the heat pipe, the CPC reflector and an ORC are combined to form the heat pipe type solar energy low-temperature thermal power generating system based on the ORC. Compared with the traditional solar energy low-temperature thermal power generating system, the invention not only has high heat efficiency and strong pressure bearing capacity, but also innovatively utilizes the phase inversion heat exchanging principle of the heat pipe to reduce a heat conduction oil loop and realizes the high-efficiency heat exchanging between an organic working medium and the heat collector.

Description

technical field [0001] The invention belongs to the technical field of solar power generation, and in particular relates to a solar organic Rankine cycle low-temperature thermal power generation system. Background technique [0002] my country has a vast territory, a large population, and energy shortages. The development and utilization of solar energy is of great significance to the national economy and people's livelihood. Due to its many characteristics, the heat pipe has a very wide application prospect in the utilization of solar energy. The heat pipe relies on the phase change of its internal working liquid to transfer heat, and has the following basic characteristics: [0003] (1) High thermal conductivity The heat pipe mainly relies on the vapor-liquid phase change of the working liquid to transfer heat, and the thermal resistance is very small. Compared with silver, copper, aluminum and other metals, the heat pipe per unit weight can transfer several orders of mag...

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Problems solved by technology

[0010] In order to solve the problem of poor pressure bearing capacity of the solar low temperature thermal power generation system, solve the problem of secondary heat exchange medium (such as heat transfer oil) and heat exchange equipment between the collector and the ORC cycle of the solar low temperature thermal power generation system, and reduce the heat collector The temperature difference between the working temperature and the cycle temperature of the organic working fluid, the invention proposes a heat pipe solar organic Rankine cycle low-temperature thermal power generation system

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