Influence of longitudinal clips in thermal stresses and deflection in solar tubular receivers Articles uri icon

publication date

  • March 2020

start page

  • 224

end page

  • 238

volume

  • 198

International Standard Serial Number (ISSN)

  • 0038-092X

Electronic International Standard Serial Number (EISSN)

  • 1471-1257

abstract

  • The analytical methodology developed in Matlab provides lower computational cost than the numerical model developed in Abaqus. Results show that clip distribution has a significant impact on thermal stress. For clips distance of 2 meters or lower, the generalised plane strain solution provides the stress distribution along the tube accurately, with a tube deflection lower than 1 millimetrer. When clips distance increases, the longitudinal stress distribution differs from the plane strain case, and the deflection increases to non-desirable values. Deflection is greater at tube ends, and aiming strategies that flatten the heat flux increases the displacement in that regions.

keywords

  • analytical model; deflection; longitudinal supports; solar external-cylindrical receiver; thermal stress; tube elbows