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AssigneeLinde Aktiengesellschaft
InventorsReinhold Hölzl, Jürgen Spreeman, Adriana Stefanescu
Estimating the term…
A method for determining a stiffness of a tube bundle heat exchanger. The heat exchanger has a core tube and a plurality of coil tubes coiled around the core tube to form a tube bundle having a plurality of coil layers at a respective layer coiling angle. The method determines a geometric strength parameter for a coil layer, the strength parameter being an area ratio of a coil-tube cross-sectional area to a cell cross-sectional area resulting from the axial spacing of the coil tubes and an outer diameter of the coil tubes. The area ratio is corrected by a correction factor taking the orientation of the coil tubes of the coil layer in relation to the force of gravity acting on the coil tubes into consideration. The stiffness of the respective coil layer is determined from the corrected area ratio and a modulus of elasticity of the coil-tube material.
Method for determining a stiffness of a tube bundle heat exchanger, which comprises a core tube and coil tubes coiled around the core tube to form a tube bundle, wherein the coil tubes are coiled in a plurality of coil layers and at a respective layer coiling angle around the core tube, comprising the steps of:
Method for determining a state of a tube bundle heat exchanger for the purpose of a lifetime analysis thereof, said heat exchanger comprising a core tube and coil tubes coiled around the core tube to form a tube bundle, wherein the coil tubes are coiled in a plurality of coil layers and at a respective layer coiling angle around the core tube, wherein a stiffness of the tube bundle heat exchanger is determined by a method comprising:
Method for producing a tube bundle heat exchanger in which coil tubes are coiled in a plurality of coil layers and at a respective layer coiling angle around a core tube, wherein, during the coiling, a stiffness of the tube bundle heat exchanger is monitored by a method comprising:
Dependencies are inferred from the claim text.