Heat exchange components and heat exchangers
A technology of heat exchange components and honeycomb structure, applied in heat exchange equipment, heat exchangers, indirect heat exchangers, etc., can solve the problems of high cost and poor productivity, and achieve the effect of cost reduction
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Embodiment 1～15
[0077] (Examples 1-15, Comparative Examples 1-6)
[0078] Using the honeycomb structure 1 and the casing 21 , the heat exchanger 30 in which the first fluid passage portion and the second fluid passage portion are formed is produced as follows.
[0079] (manufacture of honeycomb structure)
[0080]The clay containing ceramic powder was extruded into a desired shape, dried and sintered to manufacture a honeycomb structure 1 whose material was silicon carbide and whose main body dimensions were listed in Table 1. In addition, regardless of the outer shape of the honeycomb structure 1, the equivalent circle diameter Φ, which is the diameter of a circle having the same area as the area of the heat collecting part, is 40 mm, and the total length L [mm] of the axial length of the honeycomb structure 1 is 100mm. In addition, Table 1 describes the thermal conductivity λ [W / K·m] of the material of the partition wall 4 , the wall thickness t [mm] of the partition wall 4 , and the ce...
Embodiment 16～23、 comparative example 7～9
[0094] Next, a honeycomb structure in which the outer shape of the honeycomb structure 1 (equivalent circle diameter Φ is 45 mm, and the total length L is 100 mm) and the thickness t of the partition wall 4 was made the same, and the thermal conductivity of the material of the partition wall 4 was varied was produced. The results are shown in Table 2.
[0095] 【Table 2】
[0096]
[0097] The heat exchange efficiency is low when the cell density is 100, but tends to increase as the thermal conductivity of the partition wall and the cell density increase. In order to meet the requirements of becoming a heat exchange member with better performance than before, specifically, in order to meet the pressure loss of less than 5.0 [kPa] and the heat exchange efficiency of more than 50%, the thermal conductivity of the partition wall of the honeycomb structure in Table 1 and Table 2 When λ[W / K m], the wall thickness of the above-mentioned partition wall is t[mm], and the compartment...
Embodiment 24～34
[0099] Next, the thermal conductivity λ [W / K·m] of the partition walls of the honeycomb structure 1, the wall thickness t [mm] of the partition walls, and the cell density ρ [pieces / square inch] of the above-mentioned partition walls were made to be the same, and the outer diameter (equivalent A honeycomb structure 1 in which the circle diameter Φ) and the total length (L) vary. The results are shown in Table 3.
[0100] 【table 3】
[0101]
[0102] As the outer diameter (circle-equivalent diameter Φ) increases, the heat exchange efficiency increases, and then decreases again at a certain point, and the pressure loss tends to decrease relative to this tendency. In order to satisfy the above-mentioned volume, pressure loss, and heat exchange efficiency, it is necessary to simultaneously satisfy 20≦Φ≦60 and 1.66≦L / Φ≦7.5.
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