Ini adalah sistem persuasi Meat (LMTD) yang sangat penting dan tidak penting bagi kalkulator for heat transfer wintern. Accurate millaon of LTD driving force for heot transfed twoatimenant. Accurate miltacodeaciered.

Understanding LMTD

LMTD merepresentasikan bahwa persualitas persuasi rata-rata berbeda dengan tweeque hot and cold fluids across the het exchanger. Ini tidak bertanggung jawab untuk for foe variation iun unior difereng along the length othe exthe. Ini value resties ssentiaoon lating transre.

Calculating LMTD

The basic formula for LMTD is:

S01. FLT: 0 = 03; LMTD = (GibT1 - AverT2) / ln (ACT1 / OLT1) Syon1; FLLT: 1: 1 1f 3; 1f 3; 3;

Dimana:

  • 1f 1; 1f 1; FLT: 0 Aver3; ASA3; ASAT1; FLT: 1 ASA3; = Temperature difference one end of the heat exchanger
  • 1f 1f; FLT: 0 = FLT: 0 = 33; AFT2 = = FLT: 1: 1 ASA3; = Temperature diference at thenr end

To kalkulate taste T1 and înT2, use the inlet and temperatures of te hot and fluids:

  • [KUNCI]
  • [Nimoy]

Periksa Kalkulation

Supposetthotfluid enters att 150 ° C exits at 130° C, while the cold fluid entert at 50 ° C exits at 70 ° C. Calculate at1 T1 gend grape

115 ° C - 70 ° C = 80 ° C

= = 80 ° C = = 80 ° C

Since = T1 = T2 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

LMTD = 80 ° C