1. Heat exchanger hnathawh dan bulpui ber chu eng nge ni?Products Description
Heat exchanger principle bulpui ber chu temperature sang-temperature fluid atanga low-temperature fluid-a heat transfer hi a ni a, a tlangpuiin heat conduction leh convection hmangin an pahnih inkara direct contact awm lovin-.
Temperature sang-temperature fluid hian heat a chhuah a, chu chu heat exchange wall kaltlangin a transfer thin.
Heat hi metal wall (or heat exchange medium) kaltlangin a kal a ni.
Low-temperature fluid hian lumna chu a hip lut a, chu chuan temperature a tisang emaw a tlahniam emaw a ni.
A kalphung zawng zawng hian thermodynamics dan pahnihna a zawm a, chutah chuan lumna chu a takin temperature sang zawk atanga temperature hniam zawkah a luang chhuak thin.
II. Engtin nge heat exchanger te hian heat hi an transfer thin?
Heat exchanger te hian a bul berah chuan heat transfer tha tak chu mechanism pahnih hmangin an ti thei a, chungte chu conduction leh convection te an ni.
• Conduction: Metal wall kaltlangin lumna chu high-temperature lam atanga low-temperature lam ah a transfer thin.
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• Convection: Wall sir lehlama tui luang chhuak hian lumna a phur chhunzawm zel emaw, a pe chhuak emaw a ni.
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• Combined effect: Conduction leh convection inzawmkhawm hian heat transfer efficiency zawng zawng a ti sang a ni.
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Radiative heat transfer hi hmanraw thenkhatah pawh a awm thei a, mahse industrial heat exchanger-ah chuan chanvo tlemte chauh a nei a ni.
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3. Heat exchanger-a flow ruahmanna tlangpui chu engte nge ni?
Fluid flow kalna lam a zirin heat exchanger-te tan hian primary flow pattern pathum a awm a:
Co-current flow (parallel flow): Fluid pahnih hi kawng khatah an luang a, temperature danglamna chu a tlahniam zauh zauh thin.
Counter-current flow (counter-flow): Fluid pahnih hi kawng hrang hrangah an luang a, heat transfer efficiency sang ber an pe a ni.
Cross-flow: Fluid pahnih hi an inzawm tlat a; he configuration hi a compact a, hman lar tak a ni.
Chung zingah chuan counter-current arrangement hi industrial application-ah efficiency sang tak mamawhna hmunah hman a ni ber.
4. Heat exchanger chhunga thil awm dan hian engtin nge heat transfer process a nghawng?
Structural design hian heat transfer area, flow velocity distribution, leh efficiency te chu direct-in a tichiang a ni.
Heat transfer area lian zawk chuan hun unit khatah heat transfer capacity a ti sang zawk.
Flow channel design hian fluid turbulence℃a nghawng a; turbulence sang zawk chuan heat transfer tha zawk a thlen thin.
Wall material-a thermal conductivity sang zawk chuan thermal resistance a ti hniam zawk.
Configuration pangngaiah hian shell-leh-tube, plate, leh spiral chi hrang hrang a awm a, heat transfer characteristic hrang hrang nei vek a ni.
5. Heat exchanger hnathawh laiin eng key formula nge hman?
Heat transfer kalphung hi a tlangpuiin heat transfer-a fundamental equation hmangin sawifiah theih a ni.
Heat transfer equation bulpui ber chu:
Q=U × A × ΔTlm tih a ni
Khawnge:
Q: Heat transfer rate (W) a ni.
U: Heat transfer coefficient zawng zawng (W/m2·K) 1.1.
A: Heat transfer area (m2) a ni.
ΔTlm: Logarithmic hmanga boruak lum leh vawt inthlauhna
Equation chhinchhiahna te:
U emaw A emaw tihpun hian heat transfer capacity nasa takin a tipung thei a ni.
Temperature danglamna lian zawk chuan heat transfer atana driving force chak zawk a siam a ni.
6. Heat exchanger hnathawh thatna tichhe thei thil pawimawh ber berte chu engte nge ni?
Heat transfer efficiency hi engineering factor hrang hrangin a nghawng dun a ni.
Fluid property: Heat capacity bik, thermal conductivity, viscosity, etc. a awm thei.
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Flow velocity: Flow velocity sang zawk hian a tlangpuiin heat transfer a tichak a, mahse flow resistance a tipung bawk.
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Fouling factor: Fouling hian thermal resistance a tipung a, efficiency a ti tlem bawk.
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Heat transfer area: Area tlem chuan heat transfer theihna sang ber a tikhawtlai.
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