Abstract: An information processing device includes a processor. The processor is configured to acquire a calculation model, and divide the acquired calculation model at elements constituting the calculation model to generate a plurality of components. The processor is configured to estimate a first index and a second index. The first index is related to a calculation resource at a time when the calculation model is divided into the components. The second index is related to a calculation resource at a time when the calculation model is not divided into the components. The processor is configured to make determination as to whether a third index is smaller than a preset threshold. The third index is calculated based on the first index and the second index. The processor is configured to perform control to output a result of the determination.

Abstract: Apparatus for efficiently producing a wire fin tube for heat transfer which comprises fin-forming means for shaping a plurality of wires to a wavy shape, said fin-forming means including a pair of gears; means for guiding the wavy wires in an upstanding state including guide plates spaced apart a selected distance; means for feeding a revolving tube in a crossing direction, to the wavy wires so that the wires can be wound on the tube; means for controlling the operative speed relation of the fin forming means and the tube feeding means so that the wavy wires may be helically wound on the tube under a moderate tension so as to maintain the upstanding state and the same pitch as the distance of the guiding means; and means for welding the wire fins to the tube.