Analysis of Performance of Cross-Flow Fan with Various Rear Guiders

(1)

⌴⼼ᖈー᳜ 㾝⩉♈㿜⽘ Ẹ⌀ 䀩⋠㿼 ⪹ᰭ㻼⪥

卆壟毖^̐ · 決渆筚^*· 愛昷分^*· 卆氪洢^**

Analysis of Performance of Cross-Flow Fan with Various Rear Guiders

D.-W. Kim, J.-H. Lee, S.-K. Park and Youn J. Kim

Key Words :

Archimedes spiral(㞚⯊䋺Ⲫ◆㓺 ⋮㍶), Cross-flow fan(䣷⮮䣊), Fan performance ( 䣊

㎇⓻), Rearguider(Ⰲ㠊Ṗ㧊▪), Stabilizer(㓺䌲ア⧒㧊㪎)

Abstract

A cross-flow fan is widely used on many industrial fields: mining industry, automobile and home appliances, etc. The design point of the cross-flow fan is generally based on the region within low static pressure and high flow rate. It relatively makes high dynamic pressure at low speed because a working fluid passes through an impeller blade twice. However, it has low static pressure efficiency between 30% and 40%

because of relative high impact loss. Recently, in the air-conditioning systems, the operating behaviors at the off-design points are highly regarded to broaden the application area for various air-cooling loads. Especially, at the lower flow rate, there exists a rapid pressure head reduction, a noise increase and an irregular flow field against a rearguider as a scroll of centrifugal fan. Numerical analyses are carried out for investigating the flow characteristics in a cross-flow fan including the impeller, the rearguider and the stabilizer. Especially, various types of rearguiders are estimated by numerical and experimental methods to insure the stable operation in the region of lower flow rate. Numerical domains are discretized by hexahedral cells. Three-dimensional, unsteady governing equations are solved using FVM, PISO algorithm, sliding grid system and standard k - H turbulence model. ASHRAE standard fan tester is also used to estimate the performance of the modeled cross- flow fan.

匶笾昪律 b 䙃[mm]

C 㥶☯㦮㌗╖㏣☚[m/s]

C

p

㞫⩻䣢⽋Ἒ㑮 k ㏦㔺Ἒ㑮

Q 㼊㩗㥶⨟[m

³

/min, CMM]

r ⹮ἓ[mm]

U 㧚䗶⩂ 㤦㭒㏣☚[m/s]

W 㥶☯㦮㌗╖㏣☚[m/s]

Greek Symbols D 㧚䗶⩂ 㥶☯ṗ[degree]

E 㧚䗶⩂ ⋶Ṳṗ[degree]

H Ⰲ㠊Ṗ㧊▪ Ṛ⁏[mm]

1

H 㓺䌲ア⧒㧊㪎 Ṛ⁏[mm]

2

O 㓺㤪Ἒ㑮 T ṗ☚[degree]

橊岞熮沖

2 㧚䗶⩂㿲ῂ

3 Ⰲ㠊Ṗ㧊▪ ₆㽞㤦

m ⹮ἓ⹿䟻

r Ⰲ㠊Ṗ㧊▪

s 㓺䌲ア⧒㧊㪎

T 㩧㍶⹿䟻

̐

㎇‶ὖ╖䞯ᾦ ₆ἚὋ䞯⿖ ╖䞯㤦

E-mail : [email protected]

TEL : (031)290-7448 FAX : (031)290-5849

*

㌒㎇㩚㧦 DA 㽳὚ ₆⹮₆㑶㡆ῂ㏢

**

㎇‶ὖ╖䞯ᾦ ₆ἚὋ䞯⿖

(2)

1. 昢嵦

Ⱔ㦖ٻ ㌆㠛₆₆ٻ ⿚㟒㠦ٻ ㌂㣿♮ἶٻ 㧞⓪ٻ 䣷⮮䣊 ڃھۍۊێێڈہۇۊےٻہڼۉڄ㦖ٻ㧚䗶⩂ٻ㧛ബ㿲ῂṗ㦮ٻῂ⿚ٻ㠜㧊ٻ㥶㼊Ṗٻ⋶Ṳڃڽۇڼڿۀڄ⯒ٻ⚦ٻ⻞ٻ䐋ὒ䞮₆ٻ➢ⶎ㠦ٻ

⏨㦖ٻ☯㞫ڃڿ۔ۉڼۈۄھٻۋۍۀێێېۍۀڄ㦚ٻ㠑㦚ٻ㑮ٻ㧞ἶڇٻ㩚䟻ₙ㦚ٻ㺚㣿䞮₆ٻ➢ⶎ㠦ٻ㤦㭒㏣☚Ṗٻ䋆ٻ䔏㎇㦚ٻṬ ἶٻ㧞┺ډٻ➆⧒㍲ڇٻ☯㧒ٻ䛣⨟㠦㍲ٻ㤦㭒ٻ㏣☚Ṗٻ┺

⯎ٻ䣊⽊┺ٻ㧧㞚☚ٻ♮⸖⪲ٻ㏢䡫ڇٻἶ䛣⨟㦚ٻ㣪ῂ䞮

⓪ٻὋ₆㫆䢪ٻ㍺゚⿚㟒㠦ٻⰤ㧊ٻ㩗㣿♮ἶٻ㧞┺ډٻ䣾㥾㦖ٻ⋶Ṳ㦮ٻ㍺䂮ṗڃ T ڄ㧊ٻ䋊㑮⪳ٻ⏨㦒⸖⪲ٻ㩚䟻

₁

ₙ㦚ٻṬ⓪ٻ䣷⮮䣊㦖ٻ⋶Ṳ㦮ٻ㿿☢ٻ㏦㔺㧊ٻ䄺㍲ٻڎڋ ૫ڏڋڀ㦮ٻ⌄㦖ٻ㩫㞫䣾㥾㦚ٻ⽊㧎┺ډٻٻ⁎⩂⋮ٻ㩚䟻ₙ 㧒㑮⪳ٻ 㾲ἶ䣾㥾㩦㠦㍲ٻ㩚㞫ὒٻ 䛣⨟㧊ٻ 䋂⸖⪲ٻ䣾㥾㧊ٻ ⌄▪⧒☚ٻ ㏢䡫䢪䞮₆ٻ 㥚䟊㍲ٻ㩚䟻ₙ㦚ٻ㌂㣿䞲┺ډٻ 㤦㕂䣊㠦㍲ٻ 㓺䋂⪺ڃێھۍۊۇۇڄٻ 㡃䞶㦚ٻ 䞮☚⪳ٻ

㍺Ἒ♲ٻ Ⰲ㠊Ṗ㧊▪ڃۍۀڼۍۂېۄڿۀۍڄ㢖ٻ 㓺䌲ア⧒㧊㪎 ڃێۏڼڽۄۇۄەۀۍڄ㦮ٻ 䡫㌗㦖ٻ䣊㦮ٻ ㎇⓻㠦ٻ ⹎䂮⓪ٻ ㌗䢎㧎ὒٻὖἚṖٻ䄺㍲ٻ㩫㞫ڃێۏڼۏۄھٻۋۍۀێێېۍۀڄڈ䛣⨟ٻἷ

㍶ٻ⹥ٻ䣾㥾ٻ䔏㎇ٻ⻪㥚⯒ٻ┺㟧䞮Ợٻ㫆㩞䞶ٻ㑮ٻ㧞⓪ٻ 䔏㰫㦚ٻ Ṭ⓪┺ډٻ ⡦䞲ٻ ⁎ٻ 㦧㣿⿚㟒Ṗٻ ὧ⻪㥚䞮㡂ٻ ὧ㌆㣿ٻ ❇㦮ٻ ㌆㠛㣿ٻ 䢮₆䣊ὒٻ 㧦☯㹾㣿ٻ 䢮₆䣊㠦ٻ

㌂㣿♮㠊ٻ㢪ἶڇٻ㾲⁒㠦⓪ٻ㠦㠊䄾ٻ㔺⌊₆㠦㍲☚ٻ㧒

⹮㩗㦒⪲ٻ㧻㹿♮㠊ٻ㌂㣿♮ἶٻ㧞⓪ٻ㔺㩫㧊┺ډٻ 㧒⹮㩗㦒⪲ٻ 䣷⮮䣊㦖ٻ 㧚䗶⩂ڇٻ 㓺䌲ア⧒㧊㪎ڇٻ Ⰲ㠊Ṗ㧊▪⪲ٻ ῂ㎇♮⓪◆ڇٻ 㠦㠊䄾㠦ٻ 㩗㣿♶ٻ ἓ㤆ٻ 㯳⹲₆☚ٻ䙂䞾䞲┺ٻڃڡۄۂډٻڌٻ㺎㫆ڄډٻ䣷⮮䣊㦮ٻ㧧☯

㤦Ⰲ⓪ٻ㤦㕂䗢䝚㢖ٻṯ┺ἶٻ⽒ٻ㑮ٻ㧞⓪◆ڇٻ⌊⿖㥶

☯㦖ٻ 㧚䗶⩂㢖ٻ 㓺䌲ア⧒㧊㪎ٻ ㌂㧊㦮ٻ 㡃⮮㠦ٻ 㦮䟊ٻ 䘎㕂㢖㥶☯ڃۀھھۀۉۏۍۄھٻ ۑۊۍۏۀۓڄ㧊ٻ 䡫㎇♮Ⳇڇٻ 㧚䗶

⩂ٻ⌊⿖㠦㍲☚ٻ䗢䝚ٻ⹥ٻ䎆ゞٻ㡗㡃㦚ٻṗṗٻṬ⓪┺ډٻ 䔏䧞ڇٻ䘎㕂㢖㦮ٻṫ☚ٻ⹥ٻ㥚䂮ٻ㩲㠊Ṗٻ䣷⮮䣊㦮ٻ㎇

⓻ὒٻ㰗ἆ♲┺ډٻ⁎⩂⋮ٻ㍺Ἒٻ㧊⪶㧊ٻ䢫Ⱃ♮㠊ٻ㧞㰖ٻⴑ䞮ἶٻ䘎㕂㢖㠦ٻὖ⩾䞮㡂ٻ㌗䢎ٻ㡗䟻㦚ٻ⹎䂮⓪ٻ 䡫㌗⼖㑮Ṗٻⰺ㤆ٻ┺㟧䞮㰖Ⱒٻ㧊㠦ٻ╖䞲ٻ㡆ῂṖٻ⹎

㟓䞲ٻ㔺㩫㧊┺ډٻ

㡆ῂٻ⹿⻫㠦ٻ㧞㠊㍲☚ٻ㧊⪶㩗ٻ㡆ῂ⽊┺⓪ٻ⹮⽋

㩗㧎ٻ㔺䠮ὒٻ㑮䂮䟊㍳㠦ٻ㦮䞲ٻἓ䠮㩗ٻ㡆ῂṖٻ㭒⪲ٻ 㧊⬾㠊㪎ٻ㢪┺ډٻڠھۆ

^ڃڌڄ

⓪ٻ䣷⮮䣊㦮ٻ㩚⹮㩗㧎ٻ㧊⪶

㦚ٻ㔺䠮㦚ٻ䐋䟊ٻ㡆ῂ䞮㡖┺ډٻڣۄۍۊۈې ❇

^ڃڍڄ

㦖ٻ䣷⮮

䣊ٻ⌊⿖㥶☯㦚ٻۋڼۍۏۄھۇۀٻۏۍڼھۆۄۉۂٻۑۀۇۊھۄۈۀۏۍ۔ٻ ڃګگڱڄ⯒ٻ㌂㣿䞮㡂ٻṖ㔲䢪ٻ㔺䠮㦚ٻ䞮㡂ٻ㏣☚ٻ⿚䙂ٻ

⹥ٻἓ⪲㍶ڃۋڼۏۃٻۇۄۉۀڄ㦚ٻῂ䞮㡖┺ډٻڝۀۍۏ ❇

^ڃڎڄ

㦖ٻ 䣷⮮䣊㠦ٻ╖䞲 ڍ 㹾㤦ٻڡڠڨٻ゚㩫㌗ٻ㥶☯䟊㍳㦚ٻ㑮䟟䞮㡖㦒Ⳇٻ㔺䠮ἆὒ㢖ٻ゚ᾦ䞮㡂ٻ䌖╏㎇㦚ٻỖ㯳䞮㡖

┺ډٻگۊۃۍې ❇

^{ڃ ڏڄ}

ٻ㦖ٻڿۄۍۀھۏٻڽۊېۉڿڼۍ۔ٻۀۇۀۈۀۉۏٻ ۈۀۏۃۊڿ 㢖ٻڿۄێھۍۀۏۀٻۑۊۍۏۀۓٻۈۀۏۃۊڿ ⯒ٻ㌂㣿䞮㡂ٻڍ 㹾㤦ٻ゚㩦㎇ٻ゚㞫㿫㎇ٻ㥶☯㠦ٻ╖䞲ٻ䟊㍳㦚ٻ㑮䟟䞮㡖┺ډٻῃ⌊㠦㍲⓪ٻῂ䡫⳾ٻ❇

^ڃڐڄ

㧊ٻ㔺䠮㦚ٻ䐋䞲ٻ䣷

⮮䣊ٻ㍺Ἒ㣪㏢ٻ⼖ἓ㠦ٻ➆⯎ٻ㎇⓻䔏㎇㦚ٻἶ㺆䞮㡖㦒Ⳇڇٻ㰚㕂㤦ٻ❇

^ڃڑڄ

㦖ٻ䣷⮮䣊㦮ٻ㠦㠊䄾ٻ㩗㣿㠦ٻ➆

⯎ٻ䣾㥾ٻ⹥ٻ㩫㞫ڈ䛣⨟ἷ㍶㦚ٻ㍺Ἒ⼖㑮⯒ٻ⼖ἓ䟊ٻ

Fig. 1 Schematic diagram of a cross-flow fan.

ٻ

ṖⳆٻ㔺䠮㦚ٻ㑮䟟䞮㡖┺ډٻₖ㨂㤦ٻ❇

^ڃڒڄ

㦖ٻ䘟‶㥶㍶

⻫㦚ٻ㧊㣿䞮㡂ٻ䣷⮮䣊㦮ٻ㎇⓻ٻ㡞䁷ٻ⹿⻫㦮ٻ䌖╏㎇

㦚ٻ Ỗ㯳䞮㡖┺ډٻ 䠞⋾Ịٻ ❇

^ڃړڄ

㦖ٻ 䣷⮮䣊㦮ٻ 㧚䗶⩂ٻ 㧛ബ㿲ῂṗ㦮ٻ ⼖䢪⯒ٻ 䐋䞲ٻ ㎇⓻ٻ 䔏㎇㦚ٻ 㑮䂮䟊㍳

ὒٻ㔺䠮㦚ٻ䐋䟊ٻ゚ᾦ䞮㡖┺ډٻ㧊⩂䞲ٻ㡆ῂ⯒ٻ䐋䟊ٻ 䣷⮮䣊㦮ٻ㎇⓻㦖ٻ㎎Ṗ㰖ٻῂ㎇㣪㏢ٻ⳾⚦Ṗٻ㍲⪲ٻ㌗

䢎㧧㣿ٻ䞮⓪ٻộ㦒⪲ٻٻ⹳䡖㪢㰖Ⱒڇٻ㔺㩲ٻ㎎Ṗ㰖ٻ㍺

Ἒ⼖㑮㦮ٻ㥶₆㩗ٻὖἚ⓪ٻ㩫Ⱃ♮㰖ٻ㞠㦖ٻ㔺㩫㧊┺ډٻ

⽎ٻ㡆ῂ㠦㍲⓪ٻ䣷⮮䣊㦮ٻⰂ㠊Ṗ㧊▪ٻἷ㍶㦮ٻ㍺

Ἒ㧊⪶㦚ٻ㩫Ⱃ䞮ἶڇٻ㔺䠮ὒٻ㑮䂮䟊㍳㦚ٻ䐋䟊ٻ㍺Ἒٻ 䡫㌗㠦ٻ╖䞲ٻ㎇⓻䘟Ṗ⯒ٻ㑮䟟䞮ἶ㧦ٻ䞲┺ډ

2. 笛旇昪凊愯憛

䣷⮮䣊 ⌊⿖㥶☯㦖゚㞫㿫㎇㥶☯( M 0 . 3 )㧊

⸖⪲ 㤦㕂䗢䝚㦮㧧☯㤦Ⰲ㢖 ṯ┺ἶ 䞶㑮㧞┺.

䔏䧞, 㧧☯㥶㼊Ṗ 㧚䗶⩂⯒ ⚦ ⻞䐋ὒ䞮Ⳋ㍲㠦

⍞㰖⯒ Ὃ  ⹱Ợ ♮Ⳇ, 㧚䗶⩂㦮䔏㩫⻪㥚㠦㍲

Ⱒ Ⰲ㠊Ṗ㧊▪⪲ 䏶㿲㧊㧊⬾㠊㰖Ợ ♲┺. 㥶㼊₆ Ἒ㠦㍲㧚䗶⩂ ┺㦢㦒⪲ Ṗ㧻䋆㏦㔺㦚 Ṗ㪎㡺⓪ Ⰲ㠊Ṗ㧊▪㦮䡫㌗㦖 ⰺ㤆㭧㣪䞮┺. ⽎㡆ῂ㠦㍲

⓪ ₆㫊㥶㼊₆Ἒ㦮㓺䋂⪺ 㡃䞶㦚䞮⓪ Ⰲ㠊Ṗ㧊

▪㦮 ἷ㍶㔲㧧⿖㠦㍲䏶㿲ῂ₢㰖㞚⯊䋺Ⲫ◆㓺 ⋮

㍶(Archimedes spiral)㦚㧊㣿䞮㡂㍺Ἒ䞮㡖┺. 㞚⯊

䋺Ⲫ◆㓺 ⋮㍶㦖 ₆㫊㥶㼊₆Ἒ㦮㓺䋂⪺ ㍺Ἒ ⹿

⻫㦮䞮⋮⪲ 㤆㑮䞲㞫⩻䣢⽋㎇⓻㦚 Ṭ⓪ ộ㦒⪲

㞢⩺㪎㧞┺. 㩚㑶䞲 ⹪㢖 ṯ㧊㧚䗶⩂㦮䔏㩫ṗ

☚㠦㍲Ⱒ 䏶㿲㧊㧊⬾㠊㰖₆ ➢ⶎ㠦 T 㦮 Ṩ㦖

_o

360

^o

Ṗ 㞚┢ ἓ䠮㩗㑮䂮⯒ ㌂㣿䞮㡖㦒Ⳇ, ㎇⓻ 䘟Ṗ⯒ 㥚䟊 S ㌂㦮 ₆㫊 ⳾◎ὒ ゚ᾦ䞮㡖┺.

)]

/(

exp[

)

(

₃ ₂ ₂ ₂

4

r Q

d

C r b

o

r T T

_T

T (1) Heat Exchanger

Air In

AirOut

Impeller

Rear Guider

Stabilizer

(3)

㡂₆㍲,

1 2 3

r H r

2 2

2

/ tan D

T

C

m

C

)]

cos /(

sin [

tan

¹ ₂ ₂

2

E E

D

W U W 60

/ DN U

S

) sin / ( sin

/

₂ ₂

2

E

_d _exit

E

m

Q A

C W

㧊Ⳇ, ㌂㣿♲ ṗ㫛⼖㑮⓪ Fig. 2 㠦 ☚㔲䞮㡖┺.

3. 朞獞空昣愯憛

3.1 滆愶愯洛柣

㡆㏣⹿㩫㔳ὒٻ ゚㩫㌗㌗䌲ٻ ⋲⮮ٻ 㩦㎇㥶☯㦚ٻ 䟊㍳

䞮₆ٻ㥚䞮㡂ٻ⹎⊚⩒ٻỿ㧦⯒ٻ㌂㣿䞮⓪ٻἓ㤆ٻ㰖⺆⹿

㩫㔳㦚ٻڞڼۍۏۀێۄڼۉٻۏۀۉێۊۍ ⪲ٻ䚲䡚䞮Ⳋٻ┺㦢ὒٻṯ 㧊ٻ䚲₆䞶ٻ㑮ٻ㧞┺ډٻ

ٻ

0 ) ( ) 1 (

w

w w

w

j j

x u t g

g U U ٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻڃڍڄٻ

~ ) ( ) 1 (

ij i j j

i

u u

u x t g

g U U W

w

w w

w ٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻ

i i

x s P w

w ٻٻٻڃڎڄٻ ٻ

㡂₆㍲ٻ t ⓪ٻ㔲Ṛڇٻ g ⓪ٻⲪ䔎Ⰳٻ䎦㍲㦮ٻ䟟⪂㔳ڇٻ U ⓪ٻ⹖☚ڇٻ u ⓪ٻ㏣☚ڇٻ⁎Ⰲἶٻ s ⓪ٻ㤊☯⨟ٻ㏢㓺

_i

㧊┺ډ ٻ

㥚㢖ٻ ṯ㦖ٻ ゚㍶䡫ٻ 㰖⺆⹿㩫㔳㦮ٻ 䟊⯒ٻ ῂ䞮₆ٻ 㥚䟊ٻ㥶䞲㼊㩗⻫ڃہۄۉۄۏۀٻۑۊۇېۈۀٻۈۀۏۃۊڿڄ㦚ٻ㌂㣿䞮㡂ٻ㧊㌆䢪䞮㡖ἶڇٻ╖⮮ٻ⹥ٻ䢫㌆䟃㦮ٻ㻮Ⰲ⓪ٻ⽋䞿

☚㔳ڃۃ۔ڽۍۄڿٻێھۃۀۈۀڄ㦚ٻ㌂㣿䞮㡖┺ډٻ⡦䞲ڇٻ⋲⮮䟊

㍳㦚ٻ㥚䞮㡂ٻ⼓䞾㑮⯒ٻ㧊㣿䞲ٻ䚲㭖ٻ k ڈ H ٻ⳾◎㦚ٻ

㌂㣿䞮㡖㦒Ⳇڇٻ䣷⮮䣊ٻ⌊㦮ٻ㥶☯㧊ٻ㩫㌗㌗䌲㠦ٻ☚

╂䞮⓪ٻ㔲㩦₢㰖ٻ㑮䂮䟊㍳㦚ٻ㑮䟟䞮㡖┺ډٻ ٻ

3.2 昪凊懆朞愕冯沖凊割昷

䣷⮮䣊㦮 ╖䚲㩗㧎㍺Ἒ ⼖㑮㢖㌂㣿♲ 㫢䚲Ἒ

⓪ Table 1 ὒ Fig. 2 㠦 ₆㑶䞮㡖┺. Ⰲ㠊Ṗ㧊▪ 㔲㧧 ἷ㍶㦮䡫㌗㦚⼖ἓ䞮Ⳋ㍲㥶⨟㠦 ➆⯎ 㹾㞫㎇

⓻㦚㔺䠮㦚䐋䟊䁷㩫䞮㡖ἶ, 㑮䂮䟊㍳㦚䐋䟊

⌊⿖㥶☯ὒ 㹾㞫㦚゚ᾦ䞮㡖┺.

⽋㧷䞲䣷⮮䣊㦮䡫㌗㦖 ┺㭧な⩃(multi-block)

₆⻫㦚㧊㣿䞮㡂㧧㎇䞮㡖㦒Ⳇ, 䣢㩚㼊㦮゚㩫㌗

䟊㍳㧊゚ᾦ㩗㩫䢫䞲 STAR-CD

⁽⁹⁾

⯒ 㧊㣿䞮㡂㑮䂮䟊㍳㦚㑮䟟䞮㡖┺. ỿ㧦㌳㎇㦚㥚䟊䣷⮮䣊㦮㧛ῂ⿖⿚, 㧚䗶⩂, 㓺䋂⪺(scroll) 㡃䞶㦚㑮䟟䞮⓪ Ⰲ㠊Ṗ㧊▪㢖㓺䌲ア⧒㧊㪎⯒ 䡫㌗䢪䞮㡖┺. 㧊⩂

䞲 ỿ㧦㌳㎇㦖㎇⓻㠦 ╖䞲㍺Ἒ㧎㧦㦮㌗䢎 ὖ ἚṖ 䋆䣷⮮䣊㦮㑮䂮䟊㍳㦚㥚䟊䞚㑮㩗㧊┺.

Table 1 Design parameters of the modeled cross flow fan.

Fig. 2 Design parameters of the modeled cross-flow fan.

㥶☯⼖䢪Ṗ  ỿ䞲 Ⰲ㠊Ṗ㧊▪㢖㧚䗶⩂ ㌂㧊㦮 Ṛ⁏ ( H )ὒ 㓺䌲ア⧒㧊㪎㢖㧚䗶⩂ ㌂㧊㦮 Ṛ⁏

₁

( H )㠦㫆⹖ỿ㧦(enhanced grid)⯒ 㩗㣿䞮㡖┺. 䣢㩚

₂

䞮⓪ 㧚䗶⩂㠦 ╖䞲゚㩫㌗㑮䂮⳾㌂⯒ 㥚䟊䟊㍳

䆪✲㠦㍲㩲Ὃ♮⓪ ⹎⊚⩒ỿ㧦(sliding grid)⯒ 㧊㣿䞲㧊⻺䔎 ⳾✞(event module)㦚㌂㣿䞮㡖┺. 䞲䘎, STAR-CD 㠦㍲㩲Ὃ䞮⓪ ⹎⊚⩒ỿ㧦⓪ ỿ㧦㦮䡫䌲㢖㑮Ṗ ⼖䞮⓪ ộ㧊㞚┞ἶ, 㡺㰗㔲Ṛ㠦 ╖䞲 ỿ㧦㦮㥚䂮⯒ ⼖䢪㔲䋺⓪ ộ㦒⪲ 䣢㩚㦚 ⳾㌂䞮

⓪ 䔏㎇㦚 Ṭἶ 㧞┺. ỿ㧦Ἒ⓪ 䣷⮮䣊 ⌊⿖㥶☯

㦚 2 㹾㤦㦒⪲ Ṗ㩫䞮㡂㧧㎇䞮㡖㦒Ⳇ, 㩚㼊 ỿ㧦㑮⓪ 65,000 Ṳ⯒ ㌂㣿䞮㡖┺. ỿ㧦㑮㦮⼖䢪㠦 ➆

⯎ 㡺㹾⯒ 㾲㏢䢪䞮₆ 㥚䟊 80,000 Ṳ₢㰖 ỿ㧦⯒

㯳Ṗ 㔲䆆㦒⋮ Ἒ㌆ Ṩ㦮⼖䢪Ṗ 㠜㠊⽎㡆ῂ㠦

㍲⓪ Ἒ㌆㔲Ṛ㦚 ┾㿫䞮₆ 㥚䞮㡂 65,000 Ṳ⪲ 䞮㡖┺ (Fig. 3 㺎㫆).

D

2

95mm

E

1

29

^o

H

1

5.9mm

T

2

19

^o

T

3

100

^o

T1

E1

E2

D1

D2

H

2

T

5

T

4

T

2

r

4

H

1

T

3

(4)

Fig. 3 Grid systems of the modelled cross-flow fan.

3.3 凃凊浶兺

㑮䂮㡗㡃㦮㧛ῂ㢖㿲ῂ⓪ Fig. 3 㠦㍲⽒㑮㧞

⓪ ộὒ ṯ㧊㾲╖ 㥶⨟㩦㠦㍲⓪ 㞫⩻ἓἚ㫆Ị (pressure boundary condition), ⁎㣎㥶⨟㩦㠦㍲⓪ 㧛 ῂ㫆Ị㠦䔏㩫㰞⨟ 䝢⩃㓺⯒ 㧛⩻䞮㡖┺. 㾲╖

㥶⨟㫆Ị㠦㍲㧛ബ㿲ῂ ⳾⚦ ╖₆㞫㫆Ị㧊 Ṗ䟊㰖⓪ 䣷⮮䣊㦮䔏㎇㌗㞫⩻㹾⓪ 㡗㦒⪲ 䞮㡖┺.

㧚䗶⩂ ⌊⿖㦮䣢㩚㡗㡃 ỿ㧦㢖㭒⼖㦮 ἶ㩫㫢䚲 Ἒ㠦 ἶ㩫♲ ỿ㧦㌂㧊⓪ ἓἚ㩧㹿㫆Ị㦚㌂㣿䞮㡖㦒Ⳇ, 㔲Ṛ㧊 ἓὒ䞾㠦 ➆⧒ 㞴㴓㦮 ỿ㧦㢖 ⰴ ⶒⰂⳊ㍲㌞⪲㤊㡗㡃㧊㡆ἆ♮☚⪳ 䞮㡖┺. ⼓Ⳋ 㠦㍲⓪ 㩦㹿㫆Ị(no-slip condition)㦚㌂㣿䞮㡖ἶ,

⼓Ⳋ㠦㑮㰗䞲 ⹿䟻㦒⪲㦮㰞⨟㥶⨟㦖㫊㨂䞮㰖㞠⓪ ộ㦒⪲ 䞮㡖┺. ⡦䞲, ⼓ ⁒㻮㠦㍲㦮 ỿ㧦㑮

⯒ 㭚㧊₆ 㥚䟊⼓䞾㑮⯒ ㌂㣿䞮㡖┺.

4. 柪竞沫獞愕愯憛

䣷⮮䣊㦮㎇⓻㔲䠮㦚㥚䟊㍲ ASHRAE 䚲㭖㠦

⿖䞿䞲㩚⹿䦷㧛䡫㦒⪲ 㔺䠮㧻䂮⯒ ῂ㎇䞮㡖㦒Ⳇ Fig. 4 㠦㧊⯒ ⋮䌖⌊㠞┺. 䣊㠦㦮䟊 ⹲㌳♮⓪ 㩫㞫㦖㔺䠮㧻䂮㌗⮮㠦㥚䂮䞲㞞㩫㔺㦮㩫㞫䍃㦚䐋䟊䁷㩫䞮㡖㦒Ⳇ, 㥶⨟㦖㔺䠮㧻䂮 ⌊㠦㍺䂮♲

⏎㯦㩚䤚㦮㩫㞫㹾⯒ 䁷㩫䞮㡂 ἓ䠮㔳㦚㌂㣿䞮㡂 Ἒ㌆䞮㡖┺. 㹾㞫㎇⓻ 䁷㩫 ⹥ 㥶⨟䁷㩫㦚㥚䟊 micromanometer(FCO510)⯒ ㌂㣿䞮㡂㞫⩻㦚䁷㩫䞮㡖┺. Micromanometer 㦮䁷㩫㡺㹾⓪ ധ0.25%

㧊Ⳇ, 㥶⨟㦮⿞䢫☚⓪(uncertainty)⓪ ധ2.83%㧊┺.

䣊㎇⓻㔺䠮㧻䂮㠦㧻㹿♲ ⏎㯦㦖㩫⹿䡫㔺䠮

┾Ⳋ㦮㭧㕂㠦㍲ ╖䃃㦒⪲ ⳾⚦ ┺㎅Ṳ㦮 ⏎㯦㧊

㍺䂮♮㠊, 㥶⨟ ⼖䢪㠦 ➆⧒ 㩗䞿䞲 ⏎㯦✺㧊 Ṳ

Fig. 4 Schematic apparatus of a fan tester.

⹿ ⡦⓪ 䘦㐚♮☚⪳ 㩲㧧䞮㡖┺.

䣊㠦㡆ἆ♲ ⳾䎆 ☯⩻㦖䣢㩚㿫㠦 torquemeter

⯒ 㧻㹿䞮㡂䁷㩫䞲䤚㧊㠦䣢㩚㑮⯒ ὇䞮㡂 ῂ 䞮⓪ ộ㧊㧒⹮㩗㧊㰖Ⱒ, ⽎㡆ῂ㠦㍲⓪ digital power meter(Yokogawa, WT1000 series)⯒ ㌂㣿䞮㡂 ῂ☯ ⳾䎆㦮㧧☯ ☯⩻㦚䁷㩫䞲䤚 ⳾䎆㦮㎇⓻ ἷ㍶㦚㧊㣿䞮㡂㧊⯒ ⽊㩫䞮㡖┺.

5. 冶刂愕処然

⽎㡆ῂ㠦㍲⓪ 䣷⮮䣊㦮 Ⰲ㠊Ṗ㧊▪ 䡫㌗㦚⼖䢪㔲䅲ṖⳊ㍲䣷⮮䣊 ⌊⿖㠦㍲ ⹲㌳䞮⓪ 㥶☯ ⼖䢪⯒ 㑮䂮䟊㍳ὒ 㔺䠮㦚䐋䟊 ἶ㺆䞮㡖┺.

₆㫊⳾◎⪲ Ⰲ㠊Ṗ㧊▪ ἷ㍶㦚 ┾㑲㤦䢎⯒ ㌂㣿䞲䡫䌲㭧㠦㍲ ⹮ἓ 56(R56)㠦 ╖䞲䟊㍳ἆὒ

⯒ Fig. 5 㠦 ☚㔲䞮㡖┺. Figure 5(a)㠦㍲⽒㑮㧞

⓪ ⹪㢖 ṯ㧊㧛ῂ ἓἚⳊ 㩚㼊㠦㍲㥶㧛㧊 ⹲㌳

䞮⓪ ộ㧊㞚┞⧒ 䞮┾⿖㧒⿖㠦㍲Ⱒ 㥶☯㧊 ⹲㌳

䞮⓪ ộ㦚㞢㑮㧞┺. 㧊⩂䞲㥶☯㦖㧚䗶⩂ ⁒ 㻮㠦㍲㦮㥶☯㦚㧦㎎䧞䚲䡚䞲 Fig. 5(b)㠦㍲ ⁎㤦㧎㦚㺔㦚㑮㧞┺. 㧚䗶⩂ 㭒㥚㠦㍲㥶☯㧊㧒㠊

⋶ ἓ㤆 ⁎Ⱂ㠦䚲㔲䞲◆⪲ ⚦Ṳ㦮䗢䝚㡗㡃ὒ

⚦Ṳ㦮䎆ゞ㡗㡃㧊 ⹲㌳䞮Ợ ♮⓪◆, 㧊㭧䏶㿲㴓㦮㓺䌲ア⧒㧊㪎 ⁒㻮㠦 ⹲㌳䞮⓪ 㡗㡃㦖䘎㕂㢖Ṗ ⹲㌳䞮⓪ 㡗㡃㦒⪲ 㧊㦮䋂₆⋮ 㥚䂮Ṗ 䣷⮮

䣊㦮㎇⓻㠦 ⹎䂮⓪ 㡗䟻㧊䋂┺⓪ ộ㦖㭒㰖㦮

㌂㔺㧊┺. ⡦ 䞮⋮㦮䎆ゞ㡗㡃㦖⽎䣷⮮䣊㦮㩚㼊㥶☯㧊 Ὴἷ㧊㕂䞮㡂䋂Ợ ⹲㌳䞮⓪ ộ㦚㞢㑮㧞⓪◆, 䎆ゞ㡗㡃㠦㍲ ⹲㌳䞲㥶☯㧊㧛ῂ⪲

┺㔲䏶㿲 ♾㦚㞢㑮㧞┺. 㧊⩂䞲䎆ゞ㡗㡃㦖

㎇⓻㦚㩖䞮㔲䋺⓪ 㤦㧎㧊 ♲┺. ⡦䞲, 䗢䝚㡗㡃㦒

⪲⿖䎆䏶㿲♲ 㥶☯㦖 Ⰲ㠊Ṗ㧊▪㦮 ┾㑲㤦䢎⿖

⯒ 㰖⋮ 䏶㿲䁷㦒⪲ 㧊㏷♮⓪◆, ┾㑲㤦䢎⿖Ṗ 㥶☯㠦㩗䞿䞮Ợ ㍺Ἒ♮㰖㞠㞚㩫㼊㡗㡃㧊 ⹲㌳

䞮Ⳇ 㿿☢⿖Ṗ ㌳ₖ㦚㞢㑮㧞┺. 㧊⩂䞲㿿☢

㡗㡃㦖㥶☯ ㏦㔺㦚㥶⹲䞮Ⳇ, Ⰲ㠊Ṗ㧊▪ 㞫⩻䣢

⽋㎇⓻ ⹥ 㩚㼊䣷⮮䣊㦮㎇⓻㠦㍲⿖㩫㩗㡗䟻㦚 ⹎䂲┺.

Inlet

Outlet G

Stabilizer Impeller

Rear Guider

Static Pressure Tap Screen

Booster Fan

(5)

(a) whole domain

(b) domain near impeller

Fig. 5 Velocity vector of a cross-flow fan with R-type.

Figure 6 㦖㞚⯊䋺Ⲫ◆㓺 ⋮㍶㦚㧊㣿䞲 Ⰲ㠊 Ṗ㧊▪㦮㥶☯䟊㍳ ἆὒ㧊┺. 㞚⯊䋺Ⲫ◆㓺 ⋮㍶

䡫㠦㍲☚ 㧛ῂ 㥶☯㠦㍲䏶㿲㥶☯㧊 ⹲㌳䞮㰖Ⱒ

⁎ 㟧㦖 ⹮ἓ䡫ὒ ゚ᾦ䟊⽒ ➢ 㭚㠊✲⓪ ộ㦚㞢㑮㧞┺. 㧊⓪ Ⰲ㠊Ṗ㧊▪ 䡫㌗⼖䢪⪲ 㧎䟊㥶㧛

♮⓪ 䗢䝚㡗㡃㧊䢫╖♲ ἆὒ⪲, 䎆ゞ㡗㡃㧊㭚㠊

✺Ⳋ㍲ ⹲㌳䞮⓪ 䡚㌗㦒⪲ 䕦┾♲┺. 㧚䗶⩂⯒ 1 㹾䐋ὒ䞲㥶☯㦖 2 㹾䏶㿲䁷㦒⪲ 㧊㏷♮Ⳇ, 2 㹾䏶㿲㡗㡃㦚䐋ὒ䞲㥶☯㦖 Ⰲ㠊Ṗ㧊▪ 㴓㦒⪲ 䏶㿲♲┺. 㡂₆㍲, 䏶㿲㥶☯㧊㻮㦢 Ⱒ⋮Ợ ♮⓪ Ⰲ 㠊Ṗ㧊▪ ἷ㍶㔲㧧⿖⯒ ⽊Ⳋ ⹮ἓ䡫ὒ⓪ ╂Ⰲ 㩫㼊㡗㡃㧊 Ệ㦮㠜㦒Ⳇ, 㥶☯㧊 Ⰲ㧊Ṗ㧊▪ ἷ㍶㦚

➆⧒㍲㿿☢ 㠜㧊䦮⩂Ṗ⓪ ộ㦚㞢㑮㧞┺. 㿿

☢㧊 Ṧ㏢䞲㥶☯㦖㏦㔺㠜㧊㧚䗶⩂㠦㍲ ⹱㦖㠦

⍞㰖⯒ 䏶㿲ῂ₢㰖㧊㏷䞮Ợ♲┺. 㞚⯊䋺Ⲫ◆㓺

⋮㍶㦚㌂㣿䞲 Ⰲ㠊Ṗ㧊▪㠦㍲ ⡦ 䞮⋮㦮䔏㰫㩗㧎 ἆὒ⓪ ₆㫊 ⹮ἓ䡫ὒ⓪ ╂Ⰲ 䘎㕂㢖䋂₆Ṗ Ṧ㏢䞮⓪ ộ㦚㞢㑮㧞┺. 䘎㕂㢖⓪ 䣷⮮䣊㧊 ῂ

☯♮Ⳋ 䞚䧞 ⹲㌳䞮⓪ 䡚㌗㦒⪲ ⁎ 䋂₆Ṗ 㧧㦚㑮⪳, ⁎Ⰲἶ 㓺䌲ア⧒㧊㪎㢖 Ṗ₢㤊㥚䂮㠦㧞㦚㑮⪳ ㎇⓻㠦㥶Ⰲ䞲 ἆὒṖ ⋮㡾┺ἶ 㞢⩺㪎㧞┺.

⹮Ⳋ ⚦ ἆὒ⯒ ゚ᾦ䟊⽒ ➢ 䘎㕂㢖㦮㥚䂮㠦⓪ 䋆⼖䢪Ṗ 㠜⓪ ộ㦚㞢㑮㧞⓪◆, 㥚䂮⼖䢪⓪

(a) whole domain

(b) domain near impeller

Fig. 6 Velocity vector of a cross-flow fan with Ar- type.

㓺䌲ア⧒㧊㪎㦮㥚䂮⼖䢪⯒ 䐋䟊㩲㠊Ṗ Ṗ⓻䞶 ộ㦒⪲ 䕦┾♲┺.

䣷⮮䣊 ⌊⿖㞫⩻⿚䙂⓪ Fig. 7 㠦 ⋮䌖⌊㠞┺.

⁎Ⱂ㠦㍲⽒㑮㧞⓪ ⹪㢖 ṯ㧊㩫㼊㡗㡃㠦㍲㞫

⩻㧊 Ṧ㏢䞮Ợ ♮⓪◆ 䔏䧞䘎㕂㢖⿖⿚㠦㍲㞫⩻

ṫ䞮Ṗ Ṗ㧻㕂䞮Ợ ⹲㌳䞮⓪ ộ㦚㞢㑮㧞┺.

㧚䗶⩂⯒ 䐋䟊䏶㿲♲ 㥶☯㦖䘎㕂㢖⯒ 㰖⋮ 㥶☯

䞮Ợ ♮⓪◆ 㧊⿖⿚㠦㍲㏣☚Ṗ Ṗ㧻ザ⯊Ợ ⿚䙂䞮₆ ➢ⶎ㠦㞫⩻㧊 ⌄㦖 ộ㦒⪲ 䕦┾♲┺. ⹮ἓ

⹿䟻㦒⪲⓪ 㿿☢ 㥶☯㦒⪲ 㧎䟊㩖㞫㡗㡃㧊 Ⰲ㠊 Ṗ㧊▪ ⼓Ⳋ ⁒㻮₢㰖⿚䙂䞮㰖Ⱒ 㞚⯊䋺Ⲫ◆㓺

⋮㍶䡫㠦㍲⓪ 䘎㕂㢖 ⁒㻮㠦Ⱒ ⿚䙂䞾㦚㞢㑮㧞

┺.

㑮䂮䟊㍳㦚䐋䟊㞚⯊䋺Ⲫ◆㓺 ⋮㍶䡫 Ⰲ㠊Ṗ 㧊▪Ṗ ⹮ἓ䡫⽊┺ 㤆㑮䞲㎇⓻㧊 ⋮䌖⋾㦚㞢㑮㧞⓪◆, 㧊⯒ Ỗ㯳䞮₆ 㥚䟊䣊㎇⓻㧻䂮⯒ 㧊㣿䞮㡂㎇⓻ 㔲䠮㦚㑮䟟䞮㡖┺. Figure 8 㠦 ☚㔲䞲

⹪㢖 ṯ㧊 ⹮ἓ䡫㦖 ⹮ἓ㧊 ṗṗ 51, 56, 61mm ⪲ ῂ㎇♲ 䡫䌲㧊Ⳇ, 㞚⯊䋺Ⲫ◆㓺 ⋮㍶䡫㦖㍺Ἒ 㹾㞫㦚 ἶ㩫䞮ἶ, ㍺Ἒ㥶⨟㦚 4, 5, 6CMM 㦒⪲ ⼖ἓ

㔲 Pump

Turbine

Pump

Eccentric Vortex

(6)

(a) R-type

(b) Ar-type

Fig. 7 Pressure contour of cross-flow fan.

䅲ṖⳊ㍲㍺Ἒ䞲䡫㌗㦚㧊㣿䞮㡖┺.

⹮ἓ䡫㠦 ╖䞲㎇⓻ 㔲䠮ἆὒ⯒ ㌊䘊⽊Ⳋ 㥶⨟

㧊㯳Ṗ䞮Ⳋ㍲ 3.6CMM ₢㰖⿞㞞㩫㡗㡃, 5.13CMM ₢㰖㟓Ṛ㦮⿞㞞㩫㡗㡃㧊 ⹲㌳䞮㡖┺.

⹮Ⳋ Ar4 (4CMM 䡫)⓪ 3.2CMM ₢㰖Ṗ ⿞㞞㩫㡗㡃㦒⪲ Ṗ㧻㤆㑮䞲㩖㥶⨟ 㤊㩚䔏㎇㦚 ⋮䌖⌞⓪

◆, 㧊⓪ 㔺䠮㔲㌂㣿♲ Ṛ⁏( H )㧊 Ar4 㦮㍺Ἒ

₁

Ṛ⁏ὒ ☯㧒䞮₆ ➢ⶎ㧎 ộ㦒⪲ 䕦┾♲┺.

Ar5(5CMM 䡫)㢖 Ar6(6CMM 䡫)㠦⓪ 4 㢖 4.4CMM

⽊┺ 䋆㥶⨟ ⻪㥚㠦㍲㤆㑮䞲㹾㞫㎇⓻㦚 Ṭ㰖Ⱒ 㩖㥶⨟ 㡗㡃㠦㍲ ₆㫊㦮 ⹮ἓ䡫⽊┺ 㫡㰖㞠㦖㹾㞫㎇⓻ὒ ⿞㞞㩫㤊㩚䔏㎇㦚 Ṭ⓪┺.

㔺䠮㦚䐋䟊 ῂ䞲䣷⮮䣊䣾㥾ἷ㍶㦖 Fig. 9 㠦

☚㔲䞮㡖┺. 䣾㥾ἷ㍶㠦㍲☚ 㾲╖ 䣾㥾㩦㧊 Ṗ㧻㩖㞫㡗㡃㠦㧞⓪ 䌖㧛㦖 Ar4 䌖㧛㦒⪲ 㩖㞫㡗㡃䣾㥾㧊 ┺⯎ 䌖㧛㠦゚䟊 ⏨Ợ ⿚䙂䞾㦚㞢㑮㧞

┺. 㹾㞫㠦㍲㢖 ṯ㧊 ἶ㥶⨟ 㡗㡃㠦㍲⓪ Ar5 㢖 Ar6 㧊 ⏨㦖䣾㥾㦚 Ṭ㰖Ⱒ, 㩖㥶⨟ 㡗㡃㠦㍲⓪

⹮ἓ䡫⽊┺ 䣾㥾㧊 ⌄㦖 ộ㦚㞢㑮㧞┺.

6. 冶嵦

(1) 㞚⯊䋺Ⲫ◆㓺 ⋮㍶㦚㧊㣿䞲 Ⰲ㠊Ṗ㧊▪ ἷ㍶

Q[CMM]

2 3 4 5 6 7 8

dP[mmH2O]

0.0 0.5 1.0 1.5 2.0 2.5 3.0

R51C2 R56C2 R61C2 Ar4C2 Ar5C2 Ar6C2

Fig. 8 Static pressure difference versus flow rate.

Q[CMM]

2 3 4 5 6 7 8

Ks[%]

0 5 10 15 20 25

R51C2 R56C2 R61C2 Ar4C2 Ar5C2 Ar6C2

Fig. 9 Efficiency versus flow rate.

㦮㍺Ἒ ㌗ὖὖἚ㔳㦚㩫Ⱃ䞮㡖┺.

(2) ㍺Ἒ ㌗ὖ㔳㠦 ➆⧒ 㩲㧧♲ 䡫㌗㠦 ╖䞲㑮䂮䟊㍳ὒ 㔺䠮㦚㑮䟟䞮㡂 ₆㫊䡫㌗⽊┺ 㾲╖

㹾㞫㧊 10% 㩫☚ ㌗㔏䞮㡖㦒Ⳇ, 㩖㥶⨟ ╖㡃㤊㩚㡗㡃㠦㍲⿞㞞㩫㎇㦚䟊ἆ䞶㑮㧞⓪ ㍺ Ἒ㞞㦚 ῂ㿫䞮㡖┺.

(3) Ⰲ㠊Ṗ㧊▪㦮 ἷ㍶䡫㌗㦒⪲ 㞚⯊䋺Ⲫ◆㓺 ⋮

㍶㦚㧊㣿䞮⸖⪲㖾㥶☯㦮㿿ỿ㏦㔺㦚㭚㡂

゚㩫㌗㎇㦚 Ṧ㏢䞮㡖㦒Ⳇ, 㧊⓪ ㎇⓻ ㈦Ⱒ 㞚

┞⧒ ゚㩫㌗㏢㦢 Ṧ㏢㠦☚ 㧊⹪㰖䞶 ộ㦒⪲

䕦┾♲┺.

焾処怾竒

(1) Eck, B., 1973, Fans, Pergamon Press, New York.

(2) Hiromu, T., Yoshinobu, T., Yoshiki, Y. and Koichi, K., 1997, “Visualization Measurement and Numerical Analysis of Internal Flow in Cross-Flow Fan”, Journal of Fluids Engineering, Vol. 119, pp. 633-638.

(3) Bert, P. F., Pessiani, J. F., Combes, J. F. and Kueny, J.

L., 1996, “Unsteady Flow Calculation in a Cross-Flow Fan Using a Finite Element Method”, ASME 96-GT- 443.

(4) Tohru, F., Cichang, C. and Yoshinori, H., 1995, “A

(7)

Numerical Analysis of Flow in a Cross-Flow Fan”, Numerical Simulations in Turbomachinery, Vol. 227, pp. 53-58.

(5) Koo, H. M., Choi, W. S., Oh, B. J. and Lee J. K., 1998, “An Experimental Study on the Cross-Flow Fan in Airconditioning Devices: Study on the Influence of Some Basic Design Parameters”, KSME 98S226. (in Korean)

(6) Jin, S. W., Lee, J. H., Seo, S. H., Lee, N. Y. and Im, K. S., 1995, “An Experimental Study on High- Flowrate Cross-Flow Fan for Room Airconditioner”, SAREK 95-W-037. (in Korean)

Analysis of Performance of Cross-Flow Fan with Various Rear Guiders

⌴⼼ᖈー᳜ 㾝⩉♈㿜⽘ Ẹ⌀ 䀩⋠㿼 ⪹ᰭ㻼⪥