| 摘要 |
PURPOSE:To improve efficiency of heat exchanging operation by a method wherein a resisting member is placed at an upstream side of an initial pipe passage in an advancing direction of a primary fluid to generate a disturbance of flow and a heat exchanging operation between the primary fluid and the fluid within the pipe passage is efficiently performed. CONSTITUTION:A resisting element 29 is fixed to a fuel blowing cylinder 30 at an upper part of a combustion chamber and arranged in such a way as it may be positioned in pipe passages 23 arranged in cylindrical form and at an intermediate position of each of the pipe passages 23. A part of the upstream side in an advancing dtiection of a hot combustion gas indicated by an arrow A in the pipe passages 23 of inverted-U shape is defiend as a first stage pipe passage 23a and a part of the downstream side is defined as a second stage pipe passage 23b. In case that the fluid is passed through the resisting element 29, the flow of hot combustion gas is disturbed, in particular the thermal conduction to the first stage pipe passage 23a is highly promoted and then the thermal conduction for the second stage pipe passage 23b is also promoted. Since the resisting element 29 itself shows a high temperature, the first stage pipe passage 23a and the second stage pipe passage 23b are also heated by the radiation heat and the thermal conduction is promoted.
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