Disc type solar power generation comprehensive energy utilization system based on secondary condensing and running method of disc type solar power generation comprehensive energy utilization system

Abstract

The invention discloses a disc type solar power generation comprehensive energy utilization system based on secondary condensing and a running method of the disc type solar power generation comprehensive energy utilization system. A primary reflection mirror is installed on a disc type supporting framework, and a secondary reflection mirror is installed at the end portion of a suspension arm. A heat absorber is installed at the hinge position of the disc type supporting framework and a supporting stand column. A heat absorber pipeline and a flow return pipeline are arranged between the heat absorber and a water-cooled Stirling engine. The two ends of an after-burning bypass are connected with the heat absorber and the water-cooled Stirling engine correspondingly. An after-burning device isarranged on one side of the after-burning bypass and is used for heating the after-burning bypass. Due to the after-burning bypass, the Stirling engine cannot be started and stopped frequently due totemporary cloud shielding, and the service life of the Stirling engine is better prolonged while the running time is prolonged. By means of the disc type solar power generation comprehensive energy utilization system based on secondary condensing and the running method of the disc type solar power generation comprehensive energy utilization system, the energy comprehensive utilization rate of thesystem is obviously increased, the service life of the Stirling engine is better prolonged, in addition, equipment installation and maintenance are facilitated, and the economical efficiency and reliability of the system are greatly improved.

Description

technical field [0001] The invention relates to the technical field of solar heat utilization, in particular to a dish-type solar power generation comprehensive energy utilization system based on secondary concentration and an operating method thereof. Background technique [0002] Dish solar power generation is a type of solar thermal power generation. The dish reflector gathers the sunlight to the absorber near the focal point, converts it into heat energy, and drives the Stirling machine to generate electricity. At present, most of the waste heat of dish-type solar power generation is directly discharged to the atmosphere by fan air cooling. The energy used is only the power generation part, and the power generation efficiency generally does not exceed 30%, which causes a lot of waste of energy and a low comprehensive utilization rate. Although there are some reports on the use of water-cooled Stirling machines to recycle waste heat, the water pipes with insulation layer ...

AI Technical Summary

Problems solved by technology

At present, most of the waste heat of dish-type solar power generation is directly discharged to the atmosphere by means of fan air cooling. The energy used is only the power generation part, and the power generation efficiency generally does not exceed 30%, which causes a lot of waste of energy and a low comprehensive utilization rate.

Although there are some reports on the use of water-cooled Stirling machines to recycle waste heat, the water pipes with insulation layer are arranged along the cantilever, which is cumbersome and increases the burden on the cantilever and drive system, and the heat loss is also large. If there is a problem, it needs maintenance. Very inconvenient

In addition, the frequent start and stop of the Stirling engine in cloudy weather has a great impact on the overall efficiency of the system, and it is easy to cause fatigue and damage to equipment materials

Chinese patent with application publication number 109059315 and application publication date of 2018.12.21: a butterfly solar thermal power generation system, which discloses a power generation system that greatly reduces production costs, but in cloudy weather, its power generation efficiency is not high

[0003] To sum up, there is currently no dish solar power generation system that can solve the problems of comprehensive and efficient energy utilization of dish solar power generation systems and frequent start and stop of Stirling engines in cloudy weather with simplicity, economy, and high controllability.

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