162
Mudah dan Aktif Belajar Fisika untuk Kelas X
38?8=307:0=030A80=6708300B0=;418724?0B?0=0A308?030;0CB A478=660C300?0=0A380B0A300B0==08:30=B4?0B=G03860=B8:0=
C30038=68=3080B0A;0CB8=8G0=638A41CB0=68=;0CB0300;0708 B49038A410;8:=G000B0=;418724?0B38=68=308?030;0CBA478=660
C300380B0A;0CB=08:30=B4?0B=G03860=B8:0=;47C3003080B0A 300B0=G0=638A41CB0=68=300B
b. Konveksi Paksa
=D4:A8 ?0:A0 10=G0: 386C=0:0= ?030 A8AB4 ?4=38=68= 4A8= 8A0;=G0?0304A8=18;4A8=:0?0;;0CB4A8=384A4;AB0A8=430=
:8?0A0=68= =D4:A8 ?0:A0 A4?4B8 ?030 .3 38?0:08 30;0 A8AB4
?4=38=68=4A8=18;84=60;838A4:8B0C0=64A8=4;0;C8?8?0 ?8?03810=BC;47A41C07??008,0;G0=638B480
4A8=18;30870A8;?A4A?410:00=4=20?08AC7C
I030 AC7C8=84C=6:8=:0=4A8=18;4C084;4187810B0A:400=0=
30=4=60:810B:0=10680=10680=4A8=18;4=9038;4074CA0:0= ?4B00G0=6A48=6389C?08030;07?030:?A8;8=344A8=4=9038
4;4=6:C=64=60C7148:CB=G0D8A:A8B0A8=G0:?4;C0A4=9038 4=3074=24
0=0A?0304A8=18;14?8=307;47A8:C;0A8084=C9C:40 380B 300 38=68= 308 ;C0 4A8= 38B08: ;47 A41C07 :8?0A C=BC:
4=38=68=:0= 08 ?030 0380B A478=660 08 G0=6 38=68= 8=8 :410;8 4=60;8 30= 14A4=BC70= 34=60= 1;:1;: 4A8= C=BC: 4=6C;0=6
A8:C;0A8148:CB=G0 0385C=6A80380B030;074=9060AC7C4A8= 060B830:4;0?0C810B0A?0=0AG0=6388H8=:0=
C;07 4=468 :0; ?4 A0BC0= E0:BC G0=6 38B480 ;47 5;C830 A4:8B0=G0 A4200 :=D4:A8 030;07 A410=38=6 34=60= ;C0A ?4C:00=
14=30G0=614A4=BC70=34=60=5;C83034=60=1430AC7C
t
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t
?414300=AC7CG0=638?0=0A834=60=AC7C5;C830I 8;08:458A84=:=D4:A8B40;1460=BC=6?03014=BC:30=:43C3C:
0=?4C:00=0894=8A5;C830G0=614A4=BC70=34=60=?4C:00= J
C7CC30030;0A41C07C0=60=A414A0 IA430=6:0=AC7C?4C:00=94=34;0 ?030C0=60=B4A41CB I40?0;09C:0;G0=638B480;4794=34;0:020A4;C0A
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Contoh
7.7
pipa-pipa kecil
kipas pompa air
saluran air dalam
mesin
Gambar 7.18
Sistem peredaran pendingin air pada mobil.
Misalkan Anda menyeduh secangkir kopi dengan air panas,
lalu Anda mengaduknya dengan sendok yang terbuat dari logam.
Mengapa sendok itu terasa lebih panas dibandingkan jika Anda
mengaduknya menggunakan sendok yang terbuat dari plastik?
Tantangan
untuk Anda
163
Kalor
3. Perpindahan Kalor secara Radiasi
0=0A0B07084C?0:0=AC144=468B414A01068:4;0=6AC=60= 783C?0:7;C:381C80=0A3080B0708A0?08:4C8B830:4;0;C8
70=B00= :=3C:A8 0B0C?C= 0;80= :=D4:A8 A4101 :=3C:A8 30= :=D4:A8 44;C:0= H0B ?40=B00 A430=6:0= 0=B000B0708 30=
C8B430?0BC0=670?00B0C34=60=:0B0;08=B830:030H0B?40=B00 0=0A :0; 308 0B0708 A0?08 :4 C8 B49038 A4200 0380A8
?0=200=0;3080B0708A0?08:4C830;014=BC:64;10=6 4;4:B06=4B8: 038 030;07
4C:00=14=30G0=614E0=078B030?0B4=G40?30=4 0=20:0=4=468:0;0380A834=60=108:A430=6:0=?4C:00=14=30
14E0=0?CB874=G40?30=40=20:0=:0;0380A834=60=1CC: 0=4;ACG0386C=0:0=C=BC:4=G40?30=40=20:0=
0380A8A8=00B0708;47:04=08BC1830=6;6014=660=G038148 E0=078B0=468:0;0380A8380=500B:0=C=BC:40=0A:0=08
18;18;B0=6:8?4=60=6:CB8=G0:?03010680=0B0AB0=6:83820B 34=60=E0=0?CB870;B4A41CB380:AC3:0=6C=04=678=308?4=G4
0?0=4=468?0=0AA4200:=D4:A8;478=G0: 4C:00=14=3078B0;418710=G0:4=G40?30=40=20:0=
4=468:0;A410;8:=G0?4C:00=14=3014E0=0?CB87;4187A438:8B 4=G40?30=40=20:0=:0;0380A8
a. Api Unggun
4=07:07=304;0:C:0=3830407?46C=C=60=C307 4=903870;G0=6180A03830;0?4:4070=41C0B0?8C=66C=?8
C=66C=381C0B3080=B8=60=B8=6?7=:48=6G0=63810:04B4;0738 1C0B0?8C=66C=B4=BC=304=903840A070=60BE0;0C?C=BC1C7
=30B830:14A4=BC70=34=60=0?80=0A0?84=60;84;0;C8C300 ;418710=G0:A42000380A83080?8C=66C=4=64=08BC1C7=30308
?030A4200:=D4:A8 b.
Rumah Kaca
830:A4C064;10=60380A8A8=00B070830?0B4010B0AC: :430;0C07:0200=G02070G0B0?0:G0=630?0B4010B38=38=6
:0200B0C?;0AB8:A430=6:0=A8=0C;B0D8;4B30=A8=08=5040738 ?0=BC;:0=:410;8;4738=38=6:020=468:0;0380A83082070G0B0?0:
38A40?;47B0=0730=B0=00=3830;0C0=6C07:020410;8:=G0 B0=0730=B0=00=0:0=40=20:0=:410;864;10=60380A814C?0
A8=0 8=50407 0=90=6 64;10=6 G0=6 ;4187 14A0 4=G4101:0= 64;10=68=50407B4?40=6:0?;4738=38=6:020A478=660AC7CC0=60=
4=9038;418770=60B30=B0=00=30?0B783C?34=60=A460
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Informasi
Alat Penukar Kalor
Seperti namanya, alat penukar kalor adalah seperangkat
instrumen di mana terjadi pertukaran kalor antara dua aliran
fluida bergerak tanpa pencampur- an. Alat penukar kalor banyak
digunakan diberbagai industri dengan berbagai model.
Bentuk paling sederhana dari alat penukar kalor adalah penukar
kalor pipa ganda, yakni tersusun oleh dua pipa konsentris dengan
diameter berbeda. Satu fluida mengalir di dalam pipa, dan fluida
lainnya mengalir pada pipa yang menembus ruang antara pipa.
Kalor dipindahkan dari fluida yang panas ke fluida yang dingin
melalui dinding pemisahnya. Terkadang pipa yang berada di
dalam dibuat dua putaran di dalam selongsong untuk menambah
pertukaran kalor.
As the name implies, heat exchangers are devices where two
moving fluid streams exchange heat without mixing. Heat
exchanger are widely used in various industries, and they come in
numerous designs.
The simplest form of a heat exchanger is a double tube heat
exchanger. It is composed of two concentric pipes of different
diameters. One fluids flows in the inner pipes, and the other in the
annular space between the two pipes. Heat is transferred from the
hot fluid to the cold one through the wall separating them.
Sometimes the inner tube makes a couple of turn inside the shell to
increase the heat transfer area.
Sumber : Thermodynamics, 1998
untuk Anda
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