Heat Transfer and Pressure Loss Characteristics of a Channel Flow with Fibrous Metal
Kenji TANI*, Keisuke OKAZAKI*, Mamoru SENDA* and Kyoji INAOKA*
(Received on April 11, 2012)
Heat transfer experiment and pressure loss measurement have been done for the channel flow with the insertion of fibrous metal materials in order to investigate their effectiveness as an insertion device to improve the heat exchanger’s performance. Fibrous metals focused in this paper are composed of aluminum fibers of 100 micron meters diameter, once laminated as a non-woven fabric, and then hardened by diffusion bonding as a bulk insertion body. Perfect heat conduction from the wall to the fibrous metal should be one of the factors for better heat transfer enhancement, therefore, the diffusion bonding was also applied for the connection of the wall and the insertion body. It was found that the fibrous metal is effective to enhance the wall heat transfer, that is, heat transfer of eight times as large as that of the non insertion case is obtained.
Since the diffusion bonding revealed relatively large heat transfer enhancement keeping low pressure loss penalty, fibrous metal is a promising device to improve the heat exchanger’s performance.
.H\ZRUGV㸸Heat transfer, Heat exchangers, Heat transfer enhancement, Fibrous metal, Pressure loss
࣮࣮࢟࣡ࢻ㸸⇕ఏ㐩㸪⇕ჾ㸪ఏ⇕ಁ㐍㸪⧄⥔≧㔠ᒓ㸪ᅽຊᦆኻ
⧄⥔≧㔠ᒓࢆタ⨨ࡋࡓὶ㊰ࡢ⇕ఏ㐩ᅽຊᦆኻ≉ᛶ
㇂ ㈼㸪ᒸᓮ ᆂభ㸪༓⏣ ⾫㸪✄ᒸ ᜤ
ࡣࡌࡵ
࢚ࢿࣝࢠ࣮ࢆ᭷ຠ⏝ࡍࡿࡣ㸪┠ⓗᛂࡌࡓ
ྛ⇕ὶయᶵჾࡢ⏝ຠ⋡ࢆୖࡆࡿྠ㸪ࡇࢀࡲ
࡛ぢ㏨ࡋ࡚࠸ࡓ⇕࢚ࢿࣝࢠ࣮ࢆᅇࡋ㸪⏝ࢆᅗ
ࡿᚲせࡀ࠶ࡿ㸬ࡇࡢᅇຠ⋡ࢆୖࡆࡿࡣ㸪⇕ᅇ
⇕ჾࡢ㧗ຠ⋡ࡀᚲ㡲࡛࠶ࡿ㸬୍⯡㸪⇕
㔞ࢆቑࡉࡏࡿࡓࡵࡣ㸪⇕※ࡢ࡛ࡁࡿࡔࡅ㏆ࡃ
࠾࠸࡚㸪ࡑࡋ࡚࡛ࡁࡿࡔࡅከࡃࡢ㠃✚࡛⇕ࢆఏ࠼
ࡿࡇࡀᮃࡲࡋ࠸㸬ࡇࡢほⅬࡽ㸪⇕ჾ࠾࠸
࡚ࡣ㸪ᵝࠎ࡞ᙧ≧ࡢᣑఏ⇕㠃㸦ࣇࣥ㸧ࡢせ⣲㛤
Ⓨࡀ㐍ࡵࡽࢀ࡚ࡁࡓ㸬ࣇࣥࡢከࡃࡣຍᕤᛶࡢ㧗࠸
㔠ᒓ࡛〇సࡉࢀ㸪⇕ࡣࡑࡢᣑఏ⇕㠃ࢆ⇕ఏᑟ࡛⛣
ືࡋ㸪᭱⤊ⓗὶయ⇕ఏ㐩࡛ఏࢃࡿ㸬
ⴭ⪅ࡽࡣ㸪ᣑఏ⇕㠃ࡢ✲ᴟࡢᙧࡋ࡚㸪㔠ᒓ⧄
⥔ࡢࣇࣥὀ┠ࡋ࡚࠸ࡿ㸬ᮏㄽᩥ࡛ᢅ࠺⧄⥔≧㔠 ᒓࡣ㸪㔠ᒓࢆ⣽⥺≧ຍᕤࡋࡓࡶࡢࢆ㞟ࡵ㸪ຍᅽࡋ
࡚ᙧ≧ࢆᩚ࠼ࡓࡶࡢ࡛࠶ࡾ㸪࣐ࢡࣟⓗぢࢀࡤ࠸ࢃ
ࡺࡿከᏍ㉁ᛶࢆᣢࡘ㸬ࡇࢀࢆ⇕ὶ㊰ᩜࡁワࡵ
ࢀࡤ㸪ὶయࡢࡼࡾ㏆ࡃ࡛ཷ⇕ᨺ⇕ࡀྍ⬟࡛࠶ࡿ㸬 ࡍ࡞ࢃࡕ㸪ఏ⇕㠃ࡢ⇕ࡣ㧗࠸⇕ఏᑟᛶࢆࡶࡘ㔠ᒓ⧄
*Department of Mechanical Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321 Telephone: +81-774-65-6463, Fax: +81-774-65-6802, E-mail: kinaoka@mail.doshisha.ac.jp
⥔ࢆ㏻ࡋ࡚ὶ㊰ࡢྛᡤ⛣ືࡋ㸪ὶయࡼࡾከࡃࡢ
⇕ࢆఏ࠼ࡿࡇࡀᮇᚅ࡛ࡁࡿ㸬ከᏍ㉁㔠ᒓࢆ⇕
⏝ࡍࡿሗ࿌ࡣከࡃ࡞ࡉࢀ࡚࠸ࡿ1, 2)ࡀ㸪ࢇ
ࡀⓎἻ㸪ࡶࡋࡃࡣ↝⤖ࡼࡾ〇సࡉࢀࡓࡶࡢ࡛㸪⧄
⥔≧㔠ᒓࡢሗ࿌ࡣࡇࢀࡲ୍࡛ 3)ࢆ㝖࠸࡚ぢ࠶ࡓ
ࡽ࡞࠸㸬⧄⥔≧㔠ᒓࡣ㸪ᙎຊᛶᐩࡳ㸪᪤Ꮡࡢఏ⇕
⟶タ⨨࡛ࡁࡿ࣓ࣜࢵࢺࢆ᭷ࡍࡿⅬ࡛㸪ࡑࡢ㐺⏝ᛶ
ࢆㄪࡿࡇࡣᕤᏛୖ᭷ព⩏࡛࠶ࡿ㸬ࡑࡇ࡛ᮏㄽᩥ
࡛ࡣ㸪⧄⥔≧㔠ᒓࢆタ⨨ࡋࡓὶ㊰ࡢᒁᡤ⇕ఏ㐩≉ᛶ
ࢆᐇ㦂ⓗㄪᰝࡋࡓ㸬ࡇࡢ✀ࡢ≀యࢆఏ⇕㡿ᇦタ
⨨ࡍࡿ㝿ࡣ㸪ࡑࡢఏ⇕㠃ࡢタ⨨᪉ἲࡼࡾ⇕
ᛶ⬟ࡀኚࡍࡿࡢሗ࿌ࡀ࠶ࡿ 4)㸬ࡑࢀࡣࡋ
࡚ఏ⇕㠃≀యࡢ᥋ゐ⇕ᢠࡢᑠ㉳ᅉࡍࡿࡶ
ࡢ⪃࠼ࡽࢀࡿ㸬ᕤᴗ〇ရࡢከࡃࡣࣟ࢘ࡅࡼࡿ
⁐╔ࡀ⾜ࢃࢀ࡚࠸ࡿࡀ㸪ࡇࢀࡲ࡛ࡢ◊✲࡛ࡣ↓᥋
ྜࡢࡶࡢࡸ᫂グࡋ࡚࠸࡞࠸ࡶࡢࡶከᩘ࠶ࡾ㸪࠸ࡎࢀ
ࡋ࡚ࡶ᥋ྜ᪉ἲᑐࡍࡿ⤫୍ⓗ࡞ࢹ࣮ࢱࡣぢ࠶ࡓ
ࡽ࡞࠸㸬ᮏ◊✲࡛ࡣఏ⇕㠃ᑐࡋ࡚㸪⧄⥔≧㔠ᒓࢆ
ศᏊⓗᣑᩓ᥋ྜ 5)ࡍࡿሙྜὀ┠ࡋ㸪௦⾲ⓗ࡞ࣟ
࢘ࡅࡼࡿ᪉ἲ㸪ࡑࢀࡽࢆ⏝࠸࡞࠸タ⨨᪉ἲ
ࡘ࠸࡚ࡶᐇ㦂ࢆ⾜࠸㸪ఏ⇕㠃ࡢ⇕ఏ㐩ὶ㊰ࡢᅽຊ ᦆኻཬࡰࡍᙳ㡪ࢆ᳨ウࡋࡓ㸬⇕ఏᑟ≀యࢆタ⨨ࡋ
ࡓሙྜࡢఏ⇕ಁ㐍ᛶ⬟ࡢホ౯࠾࠸࡚ࡣ㸪㠃ὶ㊰
ᑐࡍࡿẚࢆᇶ⪃ᐹࡋࡓ㸬ࡲࡓ㸪ྠࡌఏ⇕ಁ㐍ࡢ
┠ⓗ࡛ࢃࢀ㸪ᮏᐇ㦂౪ࡋࡓᑍἲẚ㍑ⓗ㏆࠸
Haack ࡽ 6)ࡀ⏝࠸ࡓⓎἻ㔠ᒓࡢ⤖ᯝẚ㍑ࡋ㸪⧄⥔
≧㔠ᒓࡢఏ⇕ಁ㐍ᑐࡍࡿ᭷ຠᛶࡘ࠸࡚ㄪࡓ㸬 ᐇ㦂᪉ἲ
ᐇ㦂⨨࠾ࡼࡧࢸࢫࢺࣔࢪ࣮ࣗࣝ
ᐇ㦂ࡣ㸪✵Ẽࢆసືὶయࡍࡿ྿ࡁฟࡋᘧὶ㊰ࢆ
⏝࠸࡚⾜ࡗࡓ㸬ఏ⇕ᐇ㦂౪ࡍࡿຍ⇕⏝ࢸࢫࢺ㒊ࡢ ὶ㊰ࡣ㧗ࡉ10mm㸪ᖜ150mmࡢ▴ᙧ᩿㠃࡛࠶ࡾ㸪ὶ
ࢀ᪉ྥ㛗ࡉࡣ 150mm ࡛࠶ࡿ㸬ࡇࡢࢸࢫࢺ㒊ࡣⓎ
㐩ࡋࡓὶࢀࡀὶධࡍࡿ㸬ࣆࢺ࣮⟶ࢆ⏝࠸ࡓணഛᐇ㦂
ࡼࡾ㸪⧄⥔≧㔠ᒓࢆタ⨨ࡋ࡞࠸ሙྜ࠾࠸࡚㸪᥋
㏆ὶࡢ㸰ḟඖᛶࡀὶ㊰ࡢ୰ኸഃ85%࠾࠸࡚ಖࡓࢀ㸪 ᥋㏆ὶ㏿ᗘࡢ㧗ࡉ᪉ྥࡢศᕸࡀ༑ศⓎ㐩ࡋ࡚࠸ࡿ
ࡇࢆ☜ㄆࡋࡓ㸬
Fig. 1 ♧ࡍࡼ࠺㸪ὶ㊰ୗቨࢆఏ⇕㠃ࡋ㸪ཌ
ࡉ20ȣmࡢࢫࢸࣥࣞࢫ⟩ࢆ㈞ࡾ㸪㏻㟁ࡼࡾ➼⇕ὶ ᮰ຍ⇕ࡍࡿ㸬ࢸࢫࢺ㒊タ⨨ࡍࡿ㔠ᒓ⧄⥔ࡢࢸࢫࢺ
ࣔࢪ࣮ࣗࣝࡣ㸪ቨ㠃ᣑᩓ᥋ྜࡍࡿሙྜࡣ୍య
࡞ࡗ࡚࠸ࡿ㸬ࣔࢪ࣮ࣗࣝࢫࢸࣥࣞࢫ⟩ࡢ㛫ఏ⇕
Al 86.5 + A Al 86.5 + B Al 86.5 㸫 Al 86.5 Al 81.5 + Cu 86.5 +
Material Aluminum Copper
Porosity [%] 86.5 86.5 86.5 86.5 81.5 86.5
Installation type Diffusion bonding Brazing Not adhere Diffusion bonding Fig. 1. Schematic view of a test section.
Table 1. Specifications of the test samples.
Fig. 2. SEM image of aluminum fibrous metal.
Fibrous metal
Diffusion bonding
Convection
Heat transfer wall
Conduction Fibrous metal
Diffusion bonding
Convection
Heat transfer wall
Conduction
ぢࡅࡢᒁᡤ⇕ఏ㐩⋡ ᐃᅽຊᦆኻ ᐃ
ᐇ㦂⤖ᯝ⪃ᐹ ᒁᡤ⇕ఏ㐩⋡≉ᛶᅽຊᦆኻ≉ᛶ
ࢩ࣮ࢺࢆᣳࡳ㸪ຍ⇕ࡋࡓ⇕ࡀὶ㊰ࡢୗቨ㸦ఏ⇕㠃㸧
ࡴࡽ↓ࡃఏࢃࡿࡼ࠺⇕ᢠࢆ㜵࠸ࡔ㸬ࡲࡓ㸪ࢸࢫ ࢺࣔࢪ࣮ࣗࣝࡢୖࡣ᩿⇕ࢩ࣮ࢺࢆタ⨨ࡋ㸪ࢡࣜ
ࣝࡢୖቨࡢ⇕ࡢ㏨ࡆࢆ↓ࡃࡋࡓ㸬ࢫࢸࣥࣞࢫ⟩ࡢ
㠃ࡣᒁᡤ⇕ఏ㐩⋡ࡢ ᐃ⏝⇕㟁ᑐࢆ 14 ⟠ᡤ 10mm 㛫㝸࡛タ⨨ࡋࡓ㸬ࡲࡓὶయ ᗘࢡࣜࣝୖ
ୗቨ㠃ࡢ ᗘࡶࡑࢀࡒࢀ⇕㟁ᑐࡼࡾ ᐃࡋࡓ㸬ᗙ ᶆ⣔ࡣຍ⇕ୖὶ➃ࡽୗὶྥࡗ࡚x㍈ࢆࡿ㸬 ࢸࢫࢺࣔࢪ࣮ࣗࣝࡣ⧄⥔≧㔠ᒓᇶᯈࡽᵓᡂࡉࢀ㸪 ᇶᯈࡣὶ㊰ࡢୗቨ㠃㸦ఏ⇕㠃㸧┦ᙜࡍࡿ㸬⧄⥔≧
㔠ᒓ㒊ࡣ✵Ẽࡀὶࢀࡿὶ㊰ྠࡌ 150mm150mm
10mmࡢᑍἲࢆᣢࡕ㸪ᇶᯈࡢཌࡉࡣ1.5mm࡛࠶ࡿ㸬 ࡇࡢᇶᯈࡣቨ㠃⧄⥔≧㔠ᒓࡢᣑᩓ᥋ྜࡢ┠ⓗ㸪 ቨ㠃ࡢᖹ㠃ᛶࢆ☜ಖࡍࡿࡘࡢ┠ⓗࡀ࠶ࡿ㸬ࡇࡢᇶ ᯈࡼࡾ㸪࠼ࡓ⇕ࡢ୍㒊ࡣᇶᯈ㠃ෆ᪉ྥࡶఏᑟ ࡋ㸪ὶࢀ᪉ྥࡢᒁᡤ⇕ఏ㐩⋡ࡶᑡ࡞ࡽࡎᙳ㡪ࢆ
ཬࡰࡍ 7)㸬≀యࢆタ⨨ࡋ࡞࠸㠃ὶ㊰࠾࠸࡚⾜ࡗ ࡓணഛᐇ㦂ࡼࡾ㸪ࡇࡢᙳ㡪ࡣ᭱ୖὶ⨨᭱ୗὶ
⨨࡛᭱࡞ࡾ㸪ᇶᯈࡢ↓࠸ሙྜᑐࡋ࡚ࡑࢀࡒࢀ
ซࡑ10%పࡃ㸪10%㧗ࡃぢ✚ࡶࡿࡇ࡞ࡿ㸬ࡓࡔ ࡋ㸪ᐇᶵࡢ㐺⏝ࡢ㝿ࡶࡇࡢᇶᯈࡣᚲ㡲࡛࠶ࡿࡓ
ࡵ㸪ࡑࡢᙳ㡪ࢆྵࡴ⤖ᯝࢆ⪃ᐹࡍࡿࡇࡋࡓ㸬࡞
࠾㸪ᇶᯈࢆྲྀࡾ㝖ࡁ㸪⧄⥔≧㔠ᒓࡀ↓࠸ሙྜᚓࡓ ᒁᡤ⇕ఏ㐩⋡ศᕸࡣ㸪㏵୰ຍ⇕ࡋࡓᖹᯈୖࡢ⇕ఏ㐩
⋡ศᕸᑐࡍࡿ⤒㦂ᘧࡢᕪࡣ┦ᑐ್࡛ 3%ᮍ‶࡛
࠶ࡾ㸪Ⰻዲ୍⮴ࡍࡿࡇࢆ☜ㄆࡋ࡚࠶ࡿ㸬
⏝ࡍࡿ⧄⥔≧㔠ᒓࡣ㸪ᖹᆒ┤ᚄ 100ȣmࡢ⁐⼥
⣳⣒ࡽ〇సࡉࢀࡓ⧊ᕸࢆὶ㊰ࡢୖୗቨᖹ⾜
✚ᒙࡋࡓࡶࡢ࡛㸪ࡉࡽᣑᩓ᥋ྜࢆࡋᡂᙧࡋ࡚࠶
ࡿ㸬⧄⥔≧㔠ᒓࡢࢸࢫࢺࢧࣥࣉࣝࡋ࡚㸪Table 1
♧ࡍࡼ࠺㸪ᮦ㉁㸦࣑ࣝ㸸Al㸪㖡㸸Cu㸧㸪✵㝽
ྜ㸦86.5%㸪81.5%㸧㸪ᇶᯈࡢタ⨨᪉ἲ㸦ศᏊᣑᩓ
᥋ྜ㸸㸩㸪ࣟ࢘ࡅ᥋ྜ㸸㸫㸪᥋ྜຍᕤࢆࡉ࡞࠸
᥋ゐࡢࡳ㸸✵ḍ㸧ࢆኚ᭦ࡋࡓ㸴✀㢮ࢆࢸࢫࢺࡋࡓ㸬 ࡇࡇ࡛㸪᭱ᚋࡢA㸪Bࡢ㆑ูࡣ㸪ಶయᕪࢆぢࡿࡓࡵ
ྠࡌ᮲௳࡛సᡂࡋࡓࢧࣥࣉࣝࡢ⤖ᯝࢆ⾲ࡋ࡚࠸ࡿ㸬 㟁Ꮚ㢧ᚤ㙾ࡼࡿ⧄⥔≧㔠ᒓ㸦࣑ࣝ㸧ࡢ┿ࡢ୍
ࢆFig. 2♧ࡍ㸬ὶ㊰ࡢୖୗቨᖹ⾜࡞㠃ෆ࠾
࠸࡚㸪ࢸࢫࢺࢧࣥࣉࣝࢆὶࢀᑐࡋ࡚㸲᪉ྥኚ᭦
ࡋ࡚ᚓࡓᒁᡤ⇕ఏ㐩ᅽຊᦆኻࡣྛࠎ4%௨ෆ୍࡛
⮴ࡋ㸪⏝ࡋࡓ⧄⥔≧㔠ᒓࡣỈᖹ㠃ෆ࠾࠸࡚ࡣᴫ ࡡྠᵝ࡞ᵓ㐀ࢆᣢࡘࡶࡢ⪃࠼ࡽࢀࡿ㸬࡞࠾㸪ᮏ◊
✲࡛ὀ┠ࡍࡿ⧄⥔≧㔠ᒓࡣ㸪ࡑࡢ⧄⥔ࡢ㓄⨨᪉ྥ
౫Ꮡࡋ࡚⇕ఏᑟᑐࡍࡿ␗᪉ᛶࢆᣢࡘ8, 9)ࡀ㸪ࡑࡢ␗
᪉ᛶᑐࡍࡿ᳨ウࡣ㸪ᚋὀព῝ࡃ⾜࠺ணᐃ࡛࠶ࡿ㸬 ぢࡅࡢᒁᡤ⇕ఏ㐩⋡ ᐃᅽຊᦆኻ ᐃ
⇕ఏ㐩ࡢホ౯ࡣぢࡅࡢᒁᡤ⇕ఏ㐩⋡ࢆ⏝࠸ࡓ㸬 ぢࡅࡢᒁᡤ⇕ఏ㐩⋡ࡣ㸪⪅ࡢ◊✲ 6)ྠᵝ
ᇶᯈࡢ⇕ఏᑟࡢᙳ㡪ࢆྵࡴᒁᡤ⇕ఏ㐩⋡࡛࠶ࡾ㸪ຍ
⇕ቨ㠃ࡽὶయఏࢃࡿ⇕ὶ᮰ࢆࢫࢸࣥࣞࢫ⟩㠃 ࡢᒁᡤ ᗘὶయࡢධཱྀ ᗘࡢᕪ࡛㝖ࡋ࡚ồࡵࡓ㸬
࡞࠾㸪⏝ࡋࡓ⇕ὶ᮰ࡣ㸪ຍ⇕⇕ὶ᮰ࡽࢸࢫࢺ㒊
ୗቨ㏨ࡆࡿ⇕ఏᑟᦆኻࢆィ⟬ࡋᕪࡋᘬ࠸࡚ồࡵ
ࡓ㸬ᅽຊᦆኻࡣ㸪ࢸࢫࢺ㒊ࡢୖὶ㸪ୗὶࡑࢀࡒࢀ
40mm ࡢ⨨㟼ᅽᏍࢆタࡅ㸪୧⪅ࡢᕪᅽࡼࡾồࡵ
ࡓ㸬ᐇ㦂ࡣ㸪᩿㠃ᖹᆒ㏿ᗘࢸࢫࢺ㒊᩿㠃ࡢ➼౯┤
ᚄࡽィ⟬ࡉࢀࡿࣞࣀࣝࢬᩘࢆ 2300㹼5750 ኚ
᭦ࡋ࡚⾜ࡗࡓ㸬
ᐇ㦂⤖ᯝ⪃ᐹ ᒁᡤ⇕ఏ㐩⋡≉ᛶᅽຊᦆኻ≉ᛶ
Fig. 3ࣞࣀࣝࢬᩘࡀ4600࠾ࡅࡿࢧࣥࣉࣝ
ࡢぢࡅࡢᒁᡤ⇕ఏ㐩⋡ࡢὶࢀ᪉ྥศᕸࢆ♧ࡍ㸬ᅗ
ࢆᴫほࡍࡿ㸪࡚ࡢሙྜ࠾࠸࡚㸪⇕ఏ㐩⋡ࡣ ᐃࡢୖὶ➃⨨࠾࠸್࡚᭱ࢆ♧ࡋ㸪ୗὶྥ
࠺ࡘࢀ࡚ḟ➨ῶᑡࡍࡿࡇࡀศࡿ㸬ࡇࢀࡣ㸪
ୖὶഃ࡛ࡣ᪂㩭࡞ὶయࡢ⇕ࡀάⓎ⾜ࢃࢀ㸪 ὶయഃࡼࡾከࡃࡢ⇕ࡀ⛣ືࡍࡿ୍᪉࡛㸪ὶయࡣୗ
ὶྥ࠺ࡶ ࡵࡽࢀ࡚ ᗘࡀୖ᪼ࡍࡿࡓࡵ㸪
⧄⥔≧㔠ᒓࡢ ᗘᕪࡀḟ➨ᑠࡉࡃ࡞ࡾ⇕ࡀ ᢚไࡉࢀࡿࡓࡵ⪃࠼ࡽࢀࡿ㸬
Fig. 3 ࡢࢹ࣮ࢱࢆ⧄⥔≧㔠ᒓࢆタ⨨ࡋ࡞࠸㠃ࡢ
ሙྜồࡵࡓ⇕ఏ㐩⋡࡛㝖ࡋ࡚㸪ᒁᡤఏ⇕ಁ㐍⋡
ࡋ࡚Fig. 4♧ࡍ㸬ఏ⇕ಁ㐍⋡ࡣඛ➃࠾࠸࡚᭱
࡛⣙8ಸࢆ㉺࠼㸪⧄⥔≧㔠ᒓࡢタ⨨ࡀఏ⇕ಁ㐍ୖ᭷
ຠ࡛࠶ࡿࡇࡀศࡿ㸬ఏ⇕ಁ㐍⋡ࡢ್ࡣୗὶྥ
࠺ࡶపୗࡍࡿࡶࡢࡢ㸪᭱ୗὶ࠾࠸࡚ࡶ᭱
࡛⣙ 5.5 ࡞ࡾ㸪౫↛ࡋ࡚㧗࠸ఏ⇕ಁ㐍ຠᯝࢆ
ಖࡘࡇࡀศࡿ㸬࡞࠾㸪ࢧࣥࣉࣝ[Al 86.5㸩A][Al 86.5㸩B]ࡢᕪࡣ㸪࡛᭱ࡶ┦ᑐⓗ3.5%௨ෆ୍࡛⮴
ࡋ㸪ಶయᕪࡣᑠࡉ࠸㸬
Fig. 5 ᅽຊᦆኻࡢࣞࣀࣝࢬᩘᑐࡍࡿኚࢆ
♧ࡍ㸬ᴫほࡍࡿ㸪⧄⥔≧㔠ᒓࡢタ⨨ࡼࡾ㸪࡚
ࡢࢧࣥࣉࣝ࠾࠸࡚㸪ᅽຊᦆኻࡣࣞࣀࣝࢬᩘࡢቑ ຍࡶቑࡍࡿഴྥࢆᣢࡘࡇࡀศࡿ㸬ᆒ㉁
࡞⊃࠸✵㛫ࡽ࡞ࡿ⌮ⓗ࡞ከᏍ㉁య࡛ࡣ㸪⢓ᛶࡏ
ࢇ᩿ຊࡀᙉࡃ㸪ᅽຊᦆኻࡀ㏿ᗘࡢ୍ẚࡍࡿࢲ
ࣝࢩ࣮ࡢᢠἲ๎ࡀᡂ❧ࡍࡿ㸬ࡋࡋ㸪ᅽຊᦆኻࡢ
≉ᛶࡣ㸪㏿ᗘࡢቑຍࡶ✵㛫ࡢ࠶ࡾ᪉ᛂࡌ࡚
័ᛶຊࡢᙳ㡪ࢆཷࡅ㸪㏿ᗘࡢࢆ⪃៖ࡋࡓಟṇࢲ
ࣝࢩ࣮๎6)࡛ㄝ᫂ࡉࢀࡿ㸬Fig. 5ࡼࡾ㸪ᅽຊᦆኻࡣࣞ
ࣀࣝࢬᩘࡢ㸰ḟ㛵ᩘ⾲⌧ࡉࢀ㸪⧄⥔≧㔠ᒓࢆタ
⨨ࡋࡓሙྜࡶ័ᛶࡀᙳ㡪ࡍࡿࡇࡀぢ࡚ྲྀࢀࡿ㸬 ௨ୗ࡛ࡣྛࣃ࣓࣮ࣛࢱࡢᙳ㡪ࡘ࠸࡚ぢࡿ㸬 ᮦ㉁ࡢᙳ㡪
✵㝽⋡ࡀ➼ࡋ࠸ࢧࣥࣉࣝ[Al 86.5㸩A]㸦ۑ༳㸧[Cu 86.5㸩]㸦ۃ༳㸧ࢆẚ㍑ࡍࡿ㸬⇕ఏ㐩࠾࠸࡚ࡣ㖡ࡢ ࢧࣥࣉࣝࡢ᪉ࡀ㧗ࡃ㸪ᒁᡤ⇕ఏ㐩⋡ࡢ್᭱ࡢẚࡣ㸪
࣑ࣝࡢ⣙ 1.4 ಸཬࡪ㸬ࡇࢀࡣ㸪ᇶᮏⓗࡣ㖡ࡢ
⇕ఏᑟ⋡ࡀ㧗࠸ࡓࡵ⪃࠼ࡽࢀࡿ㸬ࡲࡓ㖡ࡣᣑᩓ᥋
ྜࡢ〇సୖࡢᐜ᫆ࡉࡶඃࢀ࡚࠾ࡾ㸪ࡑࡢⅬࡢᙳ㡪
ࡶ࠶ࡿࡶࡢᛮࢃࢀࡿ㸬ᮏ◊✲࡛ࡣ㸪〇సୖࡢᐜ᫆
ࡉ㸪㍍㔞ᛶ㸪ࡲࡓᐇ⏝ୖࡢ㞺ᅖẼࢆᐃࡋࡓ⪏⭉㣗 ᛶࢆ⥲ྜⓗ⪃៖ࡋ࡚㸪࣑ࣝࢆࡓࡿᮦᩱ⪃࠼
᳨࡚ウࢆ⾜ࡗ࡚࠸ࡿࡀ㸪⇕⛣ືࡢ⤒㊰➼ࢆྵࡵ࡚㸪 ୧⪅ࡢ㐪࠸ࢆᚋ᭦ワࡵ࡚࠸ࡃᚲせࡀ࠶ࡿ㸬ᅽຊ ᦆኻࡶ㖡ࡢࢧࣥࣉࣝࡢ᪉ࡀ⣙ 1.7 ಸ㧗࠸㸬ࡇࢀࡣ㸪 㖡⧄⥔ࡣᣑᩓ᥋ྜࡀ⾜࠸᫆࠸ᮦᩱ࡛㸪᥋ྜ⟠ᡤࡀከ ࡃ࡞ࡾὶయࡢ㛢ሰ⟠ᡤࡀቑ࠼ࡿࡓࡵ᥎ᐹࡉࢀࡿ㸬 ✵㝽⋡ࡢᙳ㡪
✵㝽⋡ࡀ␗࡞ࡿࢧࣥࣉࣝ[Al 86.5㸩A]㸦ۑ༳㸧[Al
81.5㸩]㸦ە༳㸧ࢆẚ㍑ࡍࡿ㸪Fig. 3ࡢᒁᡤ⇕ఏ㐩
⋡Fig. 5ࡢᅽຊᦆኻࡶᚋ⪅ࡢࢧࣥࣉࣝࡀ㧗࠸
್ࢆ♧ࡋࡓ㸬ᇶᮏⓗࡣ⧄⥔≧㔠ᒓ㔞ࡀቑຍࡍࡿ
ࡶᅽຊᦆኻࡀቑࡍࡿ㸬ࢧࣥࣉࣝ[Al 86.5㸩A]
ࢆ࣮࣋ࢫ⪃࠼ࡿ㸪[Al 81.5㸩]࡛ࡣ㔠ᒓ⧄⥔ࡢ㉁
㔞ẚࡀ 1.4 ಸቑຍࡍࡿࡢᑐࡋ㸪ᒁᡤ⇕ఏ㐩⋡࡛ࡣ ᴫࡡ1.3ಸ㸪ᅽຊᦆኻ࡛ࡣ1.6ಸ⛬ᗘࡢቑຍ࡞ࡗࡓ㸬 タ⨨᪉ἲࡢᙳ㡪
ቨ㠃ࡢᣑᩓ᥋ྜࢆࡋࡓࢧࣥࣉࣝ[Al 86.5㸩A]
㸦ۑ༳㸧ᣑᩓ᥋ྜࢆࡋ࡚࠸࡞࠸[Al 86.5]㸦ڧ༳㸧 ࡢ⤖ᯝࢆẚ㍑ࡍࡿ㸬Fig. 3 ࡼࡾ㸪⇕ఏ㐩⋡࡛ࡣ [Al
86.5㸩A]ࡢ᪉ࡀ㧗࠸㸬≉ୖὶ➃࡛ࡣᚋ⪅ᑐࡋ1.5
ಸ㧗࠸㸬࠸ࡗࡱ࠺࡛ᅽຊᦆኻࡣ୧⪅ࡶࢇ
ᕪࡀ⏕ࡌ࡞࠸㸬ࡇࡢࡇࡣ㸪⧄⥔≧㔠ᒓࡢෆ㒊ᵓ 㐀ᕪࡀ↓࠸ࡇࢆ㋃ࡲ࠼ࡿ㸪ቨ㠃⧄⥔≧㔠ᒓ Fig. 3. Distribution of local heat transfer coefficient.
Fig. 4. Distribution of heat transfer enhancement ratio.
Fig. 5. Pressure drop v.s. Reynolds number.
㻜㻚㻜㻜㻜 㻜㻚㻜㻡 㻜㻚㻝㻜 㻜㻚㻝㻡
㻝㻜㻜 㻞㻜㻜 㻟㻜㻜 㻠㻜㻜 㻡㻜㻜
㻾㼑㻩㻠㻢㻜㻜
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㼤 㻌㻔㼙㻕
㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻭 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻮 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻙 㻌㻭㼘㻌㻤㻢㻚㻡 㻌㻭㼘㻌㻤㻝㻚㻡㻌㻗 㻌㻯㼡㻌㻤㻢㻚㻡㻌㻗
㻜㻚㻜㻜 㻜㻚㻜㻡 㻜㻚㻝㻜 㻜㻚㻝㻡
㻜 㻞 㻠 㻢 㻤 㻝㻜
㻾㼑㻩㻠㻢㻜㻜 㻌㻭㼘㻌㻤㻢㻚㻡 㻌㻭㼘㻌㻤㻝㻚㻡㻌㻗 㻌㻯㼡㻌㻤㻢㻚㻡㻌㻗 㻌
㻌
㼔
㼤㻌㻛 㻌 㼔 㼤㻜
㼤 㻌㻔㼙㻕
㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻭 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻮 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻙
㻜 㻞㻜㻜㻜 㻠㻜㻜㻜 㻢㻜㻜㻜
㻜 㻞 㻠 㻢 㻤 㻝㻜 㻝㻞
㻌
㻌
㻼㼞㼑㼟㼟㼡㼞㼑㻌㻰㼞㼛㼜㻌㻔㼗㻼㼍㻕
㻾㼑
㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻭 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻮 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻙 㻌㻭㼘㻌㻤㻢㻚㻡 㻌㻭㼘㻌㻤㻝㻚㻡㻌㻗 㻌㻯㼡㻌㻤㻢㻚㻡㻌㻗
⥲ྜᛶ⬟ホ౯
◊✲ࡢẚ㍑
ࡢᣑᩓ᥋ྜࡀᅽຊᦆኻࢆቑຍࡉࡏࡿࡇ࡞ࡃ㸪ቨ㠃
⧄⥔≧㔠ᒓࡢ᥋ゐ⇕ᢠࢆ㍍ῶࡍࡿୖ࡛ᴟࡵ࡚᭷
ຠ࡛࠶ࡿࡇࢆ♧၀ࡋ࡚࠸ࡿ㸬ࡲࡓ㸪Fig. 3 ࡼࡾ㸪
ࣟ࢘ࡅ᥋ྜࢧࣥࣉࣝ[Al 86.5 㸫]ࡢ⇕ఏ㐩⋡ࡣ㸪ᣑ ᩓ᥋ྜࢧࣥࣉࣝ[Al 86.5 +A]ẚ㍑ࡋ࡚᭱⣙9%
㧗࠸㸬ࡇࢀࡣ㸪ࣟ࢘ᮦࡀ⧄⥔≧㔠ᒓࢆそ࠺ࡶ
㸪ఏ⇕㠃ࡢࡍࡁ㛫ᾐ㏱ࡋ࡚ᅛࡋ㸪㔠ᒓ㒊ࡢ タ⨨㠃✚ࡀቑຍࡋࡓࡓࡵ࡛࠶ࡿ㸬ࡇࡢࡇࡣ㸪⇕ఏ 㐩ࢆⰋዲࡍࡿ㠃㸪᥋ྜ㠃㏆ࡃࡢὶ㊰ࢆ㛢ሰࡋ㸪 ᅽຊᦆኻࢆቑຍࡉࡏࡿ㸬ࡑࡢቑຍ㔞ࡣ㸪ࣞࣀࣝࢬ
ᩘࡢቑຍࡶ㢧ᅾࡋ㸪ᣑᩓ᥋ྜᑐࡋ࡚᭱
⣙10%㐩ࡍࡿ㸬 ⥲ྜᛶ⬟ホ౯
ࡇࡇ࡛ࡣ㸪ࣞࣀࣝࢬᩘࡀ4600ࡢሙྜࡘ࠸࡚㸪 ᒁᡤ⇕ఏ㐩⋡ࡽồࡵࡽࢀࡿᒁᡤࢾࢵࢭࣝࢺᩘ Nu
ᅽຊᦆኻಀᩘCpࡢẚࢆồࡵ㸪⥲ྜⓗ࡞ᛶ⬟ホ౯ࢆ
⾜ࡗࡓ㸬ࡇࡇ࡛㸪ᒁᡤࢾࢵࢭࣝࢺᩘ Nu ࡢ௦⾲㛗ࡉ ࡣࢲࢡࢺࡢ➼౯┤ᚄࡋ㸪ࡇࢀᒁᡤ⇕ఏ㐩⋡ࢆ
ࡅࡓࡶࡢࢆ✵Ẽࡢ⇕ఏᑟ⋡࡛㝖ࡋ࡚ồࡵࡓ㸬ࡲࡓ㸪 ᅽຊᦆኻಀᩘ Cpࡣᅽຊᦆኻࢆ᩿㠃ᖹᆒὶ㏿ࡢືᅽ
࡛㝖ࡋ࡚ồࡵࡓ㸬
Fig. 6 ୖ㏙ࡋࡓ୧⪅ࡢẚ Nu/Cpࡢὶࢀ᪉ྥኚ
ࢆ♧ࡍ㸬ᅗࡼࡾ㸪ࢧࣥࣉࣝ[Al 86.5㸩A]࠾ࡼࡧ[Al 86.5 㸩B]ࡀⰋዲ࡛࠶ࡿࡇࡀศࡿ㸬ࣟ࢘ࡅຍᕤࢆ
ࡋࡓࢧࣥࣉࣝ[Al 86.5㸫]ࡣ㸪ᣑᩓ᥋ྜྠ⛬ᗘࡢᛶ
⬟ࢆ♧ࡍࡇࡶศࡿ㸬⇕ఏ㐩ࡀⰋዲ࡛࠶ࡗࡓ[Cu 86.5㸩]࠾ࡼࡧ[Al 81.5㸩]ࡣ㸪ᅽຊᦆኻࡀࡁࡃ㸪⥲
ྜᛶ⬟ⓗࡣప࠸ࡇࡀศࡿ㸬ࡲࡓ㸪ᣑᩓ᥋ྜࢆ
ࡋ࡚࠸࡞࠸ࢧࣥࣉࣝ[Al 86.5]ࡢᛶ⬟್ࡣ᭱ࡶపࡃ㸪 ᣑᩓ᥋ྜࡣ⥲ྜⓗ࡞ᛶ⬟ホ౯ࡢほⅬࡽࡶ᭷ຠ࡛࠶
ࡿࡇࡀ☜ㄆ࡛ࡁࡿ㸬 ◊✲ࡢẚ㍑
ࡇࡇ࡛ࡣ㸪FeCrAlYྜ㔠〇ࡢⓎἻ㔠ᒓࢆఏ⇕㠃
ࣟ࢘ࡅ᥋ྜࡋᐇ㦂ࢆ⾜ࡗࡓHaackࡽ6)ࡢᩚ⌮᪉ἲ
⩦ࡗ࡚㸪ᮏᐇ㦂࡛ᚓࡓ⤖ᯝᙼࡽࡢ⤖ᯝࢆẚ㍑ࡍ
ࡿࡇࡋࡓ㸬Haack ࡽࡀᩚ⌮⏝ࡋ࡚࠸ࡿࣃࣛ
࣓࣮ࢱࡣ㸪ቨ㠃ࡢᖹᆒࢾࢵࢭࣝࢺᩘNum㏱㐣ࣞ
ࣀࣝࢬᩘReK6)࡛࠶ࡿ㸬ࡇࡇ࡛㸪๓⪅ࡢᖹᆒࢾࢵࢭࣝ
ࢺᩘࡣࢸࢫࢺ㒊ࡢᒁᡤࡢ್ࢆ✚⟬ࡋ㛗ࡉ࡛㝖ࡋ࡚ồ
ࡵࡿࡇࡋࡓ㸬ࡲࡓ㸪ᚋ⪅ࡢ㏱㐣ࣞࣀࣝࢬᩘReK
ࡣ㸪ᙼࡽྠᵝḟᘧ(1)࡛࠼ࡓ㸬
(1)
ࡓࡔࡋ㸪K ࡣከᏍ㉁≀య࠾࠸࡚ᙧ≧ᢠࢆ⪃៖ࡋ ࡓḟᘧ(2)ࡢಟṇࢲࣝࢩ࣮๎࠾࠸࡚♧ࡉࢀࡿ㏱㐣
⋡࡛࠶ࡾ㸪Haack ࡽྠᵝ㸪ᐇ㦂ࡽᚓࡓᅽຊᦆ ኻ᩿㠃ᖹᆒ㏿ᗘUࡢ㛵ಀࡽᐃࡵࡓ㸬 K ࡣ✵㝽
࠾ࡅࡿᣑᩓࡢ✵㛫௦⾲ࢫࢣ࣮ࣝ┦ᙜࡍࡿ㸬
(2)
ࡇࡇ࡛㸪ȝࡣ✵Ẽࡢ⢓ᛶಀᩘ㸪Icࡣ័ᛶಀᩘ࡛࠶ࡿ㸬 lࡣᅽຊᦆኻࡢ ᐃ㊥㞳ࡢ㛗ࡉࢆ⾲ࡍ㸬
Fig. 7㸪ᶓ㍈㏱㐣ࣞࣀࣝࢬᩘReK㸪⦪㍈ᖹ ᆒࢾࢵࢭࣝࢺᩘNumࢆࡗ࡚㸪ᮏ◊✲࡛ᚓࡽࢀࡓ⤖
ᯝࢆࡲࡵ࡚♧ࡋࡓ㸬ᅗࡣ㸪Haack ࡽࡢ◊✲⤖ᯝ ࡢ࠺ࡕ㸪㧗࠸ᛶ⬟ࢆ♧ࡋࡓᮦᩱࡢ⤖ᯝࢆྠࣉࣟ
ࢵࢺࡋ࡚࠶ࡿ㸬Table 2 㸪Fig. 7 ࣉࣟࢵࢺࡋࡓ
HaackࡽࡢFeCrAlYྜ㔠〇ⓎἻ㔠ᒓࡢ✵㝽⋡ⓎἻ
Porosity Pore size
Sample 2 85 % 10 PPI
Sample 4 90 % 30 PPI
Sample 5 95 % 60 PPI
Sample 6 85 % 60 PPI
K
Re U K Q
Fig. 6. Total performance of exchanger elements.
Table 2. Specifications of the test samples used by Haack et al.(2001)
1 1 IC
p U
l U K U K
P P
'
㻜㻚㻜㻜 㻜㻚㻜㻡 㻜㻚㻝㻜 㻜㻚㻝㻡
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㻺㼡 㻌 㻛㻌 㻯
㼜㼤 㻌㻔㼙㻕
㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻭 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻗㻌㻮 㻌㻭㼘㻌㻤㻢㻚㻡㻌㻙 㻌㻭㼘㻌㻤㻢㻚㻡 㻌㻭㼘㻌㻤㻝㻚㻡㻌㻗 㻌㻯㼡㻌㻤㻢㻚㻡㻌㻗
ࢧࢬ㸦1 ࣥࢳ❧᪉ᙜࡓࡾࡢⓎἻಶᩘ㸧ࢆ♧ࡍ㸬
Fig 7ࡼࡾ㸪ᮏ◊✲ࡢ⧄⥔≧㔠ᒓࡢఏ⇕㔞ࡣ㸪Haack
ࡽࡢࢧࣥࣉࣝྠᵝReKᑐࡋ୍࡚ḟ㛵ᩘⓗቑ ຍࡍࡿࡇࡀศࡿ㸬✵㝽⋡ࡀᮏ◊✲㏆࠸Sample 6 ẚ㍑ࡍࡿ㸪࠼ࡤReK㸻20࡛ࡣ1.5ಸ௨ୖ㧗
࠸್ࢆ♧ࡍ㸬⧄⥔≧㔠ᒓࡣ㸪Haack ࡽࡢࢧࣥࣉࣝ
ྠ➼㸪ࡶࡋࡃࡣቨ㠃ࡢタ⨨ᣑᩓ᥋ྜࢆ⏝ࡍࡿ
ሙྜࡣࡑࢀ௨ୖࡢᛶ⬟ࢆ♧ࡍ㸬ࡇࡢ✀ࡢከᏍ㉁㔠 ᒓࡢఏ⇕≉ᛶࡀ✵㝽⋡ࡁࡃ౫Ꮡࡍࡿࡇࢆ⪃៖
ࡍࡿ㸪Fig. 7 ࡢ⤖ᯝࡣᮏ◊✲ࡢ⧄⥔≧㔠ᒓࡢᵓ㐀
ࡀఏ⇕ಁ㐍ᑐࡋ࡚᭷ຠ࡛࠶ࡿࡇࢆ♧ࡋ࡚࠸ࡿ㸬
⏝࠸ࡓ⧄⥔≧㔠ᒓࡣ〇㐀ࣉࣟࢭࢫ࠾ࡅࡿಙ㢗ᛶࡶ
༑ศ☜ಖࡉࢀ࡚࠾ࡾ㸪⇕ჾࢆ㧗ᛶ⬟ࡍࡿᇶ
♏せ⣲ࡋ࡚㐺ࡋࡓᮦᩱ࡛࠶ࡿ⤖ㄽࡅࡽࢀࡿ㸬 㸲⤖ゝ
⇕ჾࡢఏ⇕ಁ㐍ࢆ┠ⓗࡋ࡚㸪⧄⥔≧㔠ᒓࢆ
ὶ㊰ෆタ⨨ࡍࡿሙྜὀ┠ࡋ㸪ఏ⇕㠃ࡢᒁᡤ⇕ఏ 㐩⋡ὶ㊰ࡢᅽຊᦆኻࢆ ᐃࡋ㸪௨ୗࡢ⤖ㄽࢆᚓࡓ㸬 (1) ⧄⥔≧㔠ᒓࡢタ⨨ࡣఏ⇕ಁ㐍ୖ᭷ຠ࡛࠶ࡿ㸬 (2) ᒁᡤ⇕ఏ㐩⋡ࡣὶ㊰ୖὶ㧗ࡃ㸪㠃ᑐࡍ
ࡿఏ⇕ಁ㐍⋡ࡣ㸪ᮏᐇ㦂ࡢ ᐃ⠊ᅖ࠾࠸࡚᭱
⣙8ಸ㐩ࡍࡿ㸬ఏ⇕ಁ㐍⋡ࡣ᭱ୗὶ⨨
࠾࠸࡚ࡶ᭱⣙5ಸ㐩ࡍࡿ㸬
(3) ⧄⥔≧㔠ᒓቨ㠃ࡢᣑᩓ᥋ྜࡣ㸪ᅽຊᦆኻࢆቑ ຍࡉࡏࡿࡇ࡞ࡃ᥋ゐ⇕ᢠࢆῶࡌ㸪⇕ఏ㐩ᛶ
⬟ࢆ㧗ࡵࡿࡇࡀྍ⬟࡛࠶ࡾ㸪ఏ⇕ಁ㐍ἲࡋ
࡚᭷ຠ࡛࠶ࡿ㸬
(4) ᮏ◊✲࡛⏝࠸ࡿ⧄⥔≧㔠ᒓࡢ⇕ఏ㐩⋡ࡣ㸪⪅
ࡢ௦⾲ⓗ࡞ⓎἻ㔠ᒓࡼࡾ㧗ࡃ㸪⇕ჾࡢ㧗ᛶ
⬟ᴟࡵ࡚᭷ຠ࡛࠶ࡿ㸬
ᮏ◊✲ࡣᩥ㒊⛉Ꮫ┬⛉Ꮫ◊✲㈝ᇶ┙◊✲(C)ࠕࣇ
࣓ࣥࢱࣝ⇕ჾࡼࡿ⇕ᅇಁ㐍㸦ㄢ㢟␒ྕ
22560210㸧ࠖࡼࡾ⾜ࢃࢀࡓ㸬୍㒊ࡣᩥ㒊⛉Ꮫ┬⚾❧
Ꮫᡓ␎ⓗ◊✲ᇶ┙ᙧᡂᨭᴗࠕࢮ࢚࣑ࣟࢵࢩࣙ
ࣥᢏ⾡ࢆᇶ┙ࡋࡓ⎔ቃㄪᆺ࢚ࢿࣝࢠ࣮ࢢࣜࢵࢻ ࡢ᭱㐺◊✲ࠖࡢᨭࢆཷࡅࡓ㸬⧄⥔≧㔠ᒓࡢ〇స
ࡣ㜰ୖ㞞Ặ㸦ኴ┒ᕤᴗᰴᘧ♫㸧ࡢ༠ຊࢆᚓࡓ㸬 ࡇࡇグࡋ࡚ㅰពࢆ⾲ࡍࡿ㸬
ཧ⪃ᩥ⊩
1) K. Boomsma, D. Poulikakos and F. Zwick, “Metal foams as compact high performance heat exchangers”, Int. J. of Heat and Mass Transfer, 35, 1161-1176(2003).
2) Shadi Mahjoob and Kambiz Vafai, “A synthesis of fluid and thermal transport models for metal foam heat exchangers”, Int. J. of Heat and Mass Transfer, 51, 3701–3711(2008).
3) ᑠᯇ႐⨾㸪Ⳣཎᚁὒ㸪బ⸨ᐶᡯ㸪⸨⏣ ᛅ㸪“↝
⤖࣑ࣝࢽ࣒࢘⧄⥔ࣄ࣮ࢺࢩࣥࢡࡢఏ⇕ᛶ⬟ᐇ㦂”㸪
᪥ᮏ෭✵ㄪᏛㄽᩥ㞟㸪26-3, 217-224(2009).
4) V.V. Calmidi and R.L. Mahajan, “Forced convection in high porosity metal foams”, J. of Heat Transfer, 122, 557-565(2000).
5) ⸨ྜྷᩄ⏕㸪᭱᪂᥋ྜຍᕤᢏ⾡ࡑࡢᛂ⏝㸦᪥หᕤ ᴗ᪂⪺♫㸪ᮾி㸪1993㸧, p.36-42.
6) D.P. Haack, K.R. Butcher, T.Kim, T.J. Lu, “Novel lightweight metal foam heat exchangers”, Porvair Fuel Cell Technology Inc, USA, 2001.
7) ᑠ⏣ ㇏㸪ᒾ ⿱㸪㕥ᮌ㑻㸪ྜྷ⏣ⱥ⏕㸪“ከ Ꮝ㉁యෆ⇕ὶືᅛయቨෆ⇕ఏᑟࡢ㐃ᡂゎᯒ”㸪᪥ᮏ ᶵᲔᏛㄽᩥ㞟㸦B⦅㸧㸪69-679, 674-681(2003).
8) Ⳣཎᚁὒ㸪ྜྷᮌ♸ஓ㸪“⧊࣑ࣝࢽ࣒࢘⧄⥔ᒙ ࡢ᭷ຠ⇕ఏᑟ⋡ࡢࡁ࡞␗᪉ᛶ”㸪᪥ᮏᶵᲔᏛㄽᩥ
㞟㸦B⦅㸧㸪70-696, 2105-2109(2004).
9) ᮌ┤ே㸪ᇼ㒊᫂ᙪ㸪ᕝᮏ⿱ኴ㸪✄ⴥⱥ⏨㸪“⇕ ఏᑟ␗᪉ᛶࢆ᭷ࡍࡿྛ✀㔠ᒓ⧄⥔ᒙࡢ⇕ఏᑟ≉ᛶ”㸪
⇕≀ᛶ㸪24-1, 9-14(2010).
Fig. 7. Num v.s. Rek including the results of Haack et al.
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