Pressure loss detection method of heat collection pipe network

Abstract

The present invention discloses a pressure loss detection method of a heat collection pipe network, belonging to the technical field of solar thermal power generation. The method comprises a step of simplifying a solar thermal power generation system heat collection field pipe network as a resistance network, a step of allowing the resistance factors of two solar heat collection array loops in the mother pipe in the heat collection field pipe network to be equivalent to R2, allowing the pipe on-way resistance factors between a cold oil mother pipe and a hot coil mother pipe as R1 and R3, and forming an infinite network by an infinite pipeline loop, a step of calculating the on-way pressure drop in the pipeline, calculating the friction resistance factor of each segment of the pipeline, and obtaining the resistance value in the resistance network, a step of obtaining the pressure loss value of the heat collection pipe network in the solar thermal power generation heat collection field pipe network according to the resistance value in the resistance network. Through the pressure loss equivalent calculation of a solar thermal power generation infinite pipe network, the accuracy of solar thermal power generation system modeling data is greatly improved, the data bias is reduced, and the control stability of the solar thermal power generation system is ensured.

Description

technical field [0001] The invention relates to the technical field of photothermal power generation, in particular to a pressure loss detection method of a heat collection pipe network. Background technique [0002] With the serious environmental pollution and the depletion of energy sources, the new energy power generation market has begun to be valued and widely used in countries all over the world, especially in developed countries such as Europe and the United States. With the development of new energy, solar thermal power generation has also begun to rise day by day, especially in developed countries such as Germany and Spain. As a country rich in solar energy, my country has also begun to gradually develop the solar thermal power generation industry. However, due to the influence of environmental factors, there are still many problems in the solar thermal power generation system, especially in some calculation data, the calculation accuracy is poor, and the accurate e...

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Problems solved by technology

[0004] The heat collection efficiency test and analysis algorithm of the concentrator of the trough solar concentrating thermal power station disclosed in this patent document can finally obtain the heat collection efficiency and the curve of the concentrator by combining the test data with the least squares method to fit the curve, but it cannot be accurately tested The pressure loss data of the CSP infinite pipe network is obtained. In the control of the CSP system, the effect deviation is large, and the system operation will be greatly affected, resulting in poor system control stability.

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