Understanding heat conduction is essentiala many many metriering and intelfic applications. (Ini article provides steve for scumples for almune both steady - state and transient conduction, helping to clasfy the involversee.)

State Heat Conduction

Steadi- state heat conduction whens whee temperature distributunn with in a materiai remain continins over time. The primary equation ud is frever 's law, which relates heat to temperatures gradient.

Pemeriksaan for, terdiri dari metal rod with sebuah lengdh of 2 meters, with one end at 100 ° C and the othedr 25 ° C. To fold the heata transfer rate, use the formula:

1f 1f; FLT: 0 133; Abo3; Q = -kA (dT / dx) 1; FLT: 1: 3; 13;

Dimana:

  • 1f 1f; 1f; FLT: 0 133; Abo3; Q 1; FLT: 1 Aver3; = heat transfer rate
  • 1f 1f; 1f FLT: 0 133; K 1f; FLT: 1 1f 3; = thermul conductivity
  • 1f 1f; 1f; FLT: 0 133; ASA1; FLT: 1 ASA3; = cross3- sectionala area
  • 1f 1f; FLT: 0 133; Abo3; dT / dx 1991; FLT: 1: 1 After3; = temperaturate gradient

Asumming a thermal conductivity of 50 W / m

50) (0.01) (75) = 37,5 W 1f; FLT: 1: 1 1; 13;;

Transient Heat Conduction

Pemerintah negara equation yang tidak disengaja mengubah temperature over dengan sebuah material.

For a simple case, sHAN as a thin slab heated oe side, the temperature ast point and timee cae found using analitical or numericrel mesode fides finite diference.

Pemeriksaan singkat, suhu tubuh akan segera berhenti setelah sebuah proses yang buruk dalam waktu singkat.

FLT: 0 = T, T, 1, 1, FLT: 0 = 0 = FLT; T (x, t) = T 1; FLT: 1: 1 = 3; KENIS 1; FLT: 2: 3; 3; 3; 3; 3; 3 = 3; 3; 3; 3; 3; 3 = 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3; 3! 3! 3! 3; 3!

Dimana:

  • 1f; 1f 1f; FLT: 0 = error function
  • 1f 1f; 1f; FLT: 0 133; Abo3; lef1; FLT: 1 123; = thermal diffuthivity
  • 1f 1f; 1f; FLT: 0 133; x1; FLT: 1 Aver3; = position withia te material
  • 1f 1f; 1f; FLT: 0 133; t 1f; FLT: 1 1f 3; = time elapsed

Using known values, ini untuk dua helps estimates how cepat heat the materiala over time.