Parabolic groove type composite power generation system with solar heat collector and chemical heat pump being combined together

Abstract

The invention discloses a parabolic groove type composite power generation system with a solar heat collector and a chemical heat pump being combined together. The parabolic groove type composite power generation system with the solar heat collector and the chemical heat pump being combined together comprises a parabolic groove type heat collecting unit, a chemical heat pump temperature rising and energy storing unit and a dynamic power generation unit. The parabolic groove type heat collecting unit is used for receiving and collecting solar radiation energy, the received solar radiation energy is converted into medium temperature heat energy of about 380 DEG C, the medium temperature heat energy is used as a heat source and starts an endothermic chemical reaction, heat is absorbed or released in the chemical reaction, the medium temperature heat energy is converted into chemical energy and stored or generates high temperature heat energy which is higher than 500 DEG C, and the high temperature heat energy is transmitted to the dynamic power generation unit. The dynamic power generation unit converts the received heat energy into electric energy and outputs the electric energy through power equipment such as a turbine and a power generation set. The parabolic groove type composite power generation system with the solar heat collector and the chemical heat pump being combined together solves the problems that the power cycle efficiency is low due to the fact the steam parameter of an independent groove type solar thermal power generation system is low, the solar energy is used efficiently, and the parabolic groove type composite power generation system is suitable for solar thermal power generation technologies.

Description

technical field [0001] The invention relates to the technical field of renewable energy application, in particular to a compound power generation system combining parabolic trough solar heat collection and chemical heat pump. Background technique [0002] Solar thermal power generation technology uses solar concentrating technology to convert solar radiation energy into high-temperature heat energy, and then generates electricity through a thermal cycle. According to different concentrating technologies, solar thermal power generation systems are divided into three types: trough type, tower type, and dish type. At present, trough type solar thermal power generation technology is relatively mature, and commercial power plants have been in operation. However, the heat transfer working medium is usually heat transfer oil, which has a low vaporization point, which leads to deterioration under high temperature working conditions. The maximum working temperature of the currently u...

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Problems solved by technology

However, the heat transfer working medium is usually heat transfer oil, which has a low vaporization point, which leads to deterioration under high temperature working conditions. The maximum working temperature of the currently used heat transfer oil should not be higher than 400°C, and the maximum steam parameter of the turbine inlet is about 370°C to 380°C, the low main steam parameters seriously restrict the improvement of the power generation efficiency of the system, and greatly affect the development of trough solar thermal power generation technology

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