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A design method of dish solar Stirling heat engine tube cluster heat absorber

A design method and technology of solar energy, applied in the direction of solar thermal power generation, mechanical power generated by solar energy, mechanical equipment, etc.

Active Publication Date: 2019-03-15
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no complete heat absorber design method, so there is an urgent need for a complete design method for the dish solar Stirling heat engine tube cluster heat absorber. guide

Method used

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  • A design method of dish solar Stirling heat engine tube cluster heat absorber
  • A design method of dish solar Stirling heat engine tube cluster heat absorber
  • A design method of dish solar Stirling heat engine tube cluster heat absorber

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Embodiment

[0086] 1: known parameter effective power P 0 1Kw, P m is 2MPa, the rotational speed n is 500r / min, the working fluid power conversion coefficient ζ is 0.34, the swash plate inclination θ is 20°, the temperature of the hot chamber T E is 700 degrees, the cold chamber temperature T C is 45 degrees; calculated to get B n =0.168,D CY =5.62cm, V E =88.67cm 3 , V C =77.36cm 3 .

[0087] 2: First calculate Stirling heat engine cycle work W CE =2.676Kw, basic input heat Q E =4.048, calculate the total basic heat input as Q H =4.448kW; M fhmax =0.3453, M fhmin =0.1230,F ht =0.284, m H = 1.545g / s, then the calculation formula for the number of heat absorber tubes and tube length based on the basic input heat can be obtained as

[0088] 3: First calculate the regenerator volume flow rate correction factor F Cr =0.65, cooler volume flow rate correction factor F Ck = 0.717. Then calculate the four intermediate variables Finally, the formula for calculating the numb...

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Abstract

The invention discloses a design method of a tube bundle type heat absorber of a dish type solar Stirling heat engine. The design method comprises the following steps of (1) determining of calculation of main design parameters of the Stirling heat engine, (2) calculation of the tube number and the tube length of heating tubes of the heat absorber and (3) design of the space positions and shapes of the heating tubes of the tube bundle type heat absorber of the dish type solar Stirling heat engine. The practical calculation method is provided for design of the tube bundle type heat absorber of the dish type solar Stirling heat engine, and starting from the main design parameters of the Stirling heat engine, calculation of the tube number and the tube length of the heating tubes of the tube bundle type heat absorber based on basic input heat and the optimal length-diameter ratio can be provided; and the tube bundle type heat absorber designed through the method is high in reliability and good in maintainability, and it can be guaranteed that the heat exchange amount of heating tube bundles can meet the design requirement.

Description

technical field [0001] The invention belongs to the technical field of solar energy Stirling heat engine heat absorbers, and in particular relates to a design method for a dish-type solar energy Stirling heat engine tube cluster heat absorber. Background technique [0002] The performance of the heat exchanger assembly of the dish solar Stirling heat engine is the key to ensure the performance of the whole machine. As the interface of light-to-thermal energy conversion, the performance of heat absorber is one of the determinant factors reflecting the performance of heat exchanger components. Compared with heat sinks for other purposes, the technical requirements of heat sinks for solar thermal power generation are higher, which is mainly reflected in the fact that the heat sinks for solar thermal power generation are subjected to greater heat flux density, and the distribution of heat flux density is more uneven and reliable. The performance and maintainability requirements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02G1/055F03G6/06G06F17/50
CPCF02G1/055F02G2254/30F03G6/068G06F30/17Y02E10/46
Inventor 刘繁茂张磊蒋彭罗芳芝
Owner HUNAN UNIV OF SCI & TECH
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