I. Madung N-gun Shadawn Ai Lam Ni
1. Katsi ai hpe htawt sit ai shara (npawt nhpang n-gun jaw ai lam)
- N-gun jaw ai npawt tara:Katsi ai shara htawt sit ai shara kaba wa yang, katsi ai hte katsi ai ntsin ni grau hkum tsup hkra matut mahkai wa nna, katsi ai hpe htawt sit ai lam grau law wa ai, n-gun grau law wa ai (core logic: Q=K·A·Δt, A gaw katsi ai shara htawt sit ai shara re).
- Madung lam hpe sadi ra ai:Galoi mung grau kaba ai shara nga ai gaw kaja ai n re; dai hpe teng sha nbung galai shai ra ai lam ni hte maren shatai ra ai. Heat exchanger hpe scale galaw ai (sh) pat da ai rai yang, "effective heat transfer area hpe shayawm kau ai" hte bung na re, dai gaw 30%-50% shayawm ai lam hpe hkrak sha byin shangun na re.
- asan sha galaw ai:Pipe n pat hkra, nhprang arai ni hpe ayan jasan jaseng u; model langai hpe lata ai shaloi, nbung galai shai ai lit hte maren, nbung htawt sit ai shara hpe hkrak hkrak shadawn nna, myi nmu ai sha hkum jat.
2. Katsi ai hpe htawt sit ai shadawn shadang (madung akyu rawng ai lam hpe madun ai)
- N-gun jaw ai npawt tara:Katsi ai hpe htawt sit ai coefficient (K value) grau law wa yang, unit time hte unit area langai hta katsi ai hpe grau law hkra htawt sit lu ai, dai gaw katsi ai hpe galai shai ai jak langai a "katsi ai hpe htawt sit lu ai atsam" hpe shadawn na matu madung masat kumla rai nga ai.
- Madung shadut ai lam ni:n-gun galai shai ai arung arai (copper hte titanium alloys ni a n-gun galai shai ai coefficient gaw, n-gun n-gun n-gun hta grau law ai), ntsa maga na hkrang (threaded tubes hte finned tubes ni gaw K value hpe plain tubes hta 20%-40% grau law ai), n-gun hte bunghku lapran na matut mahkai masa ni hpe mung tsun dan ai.
- asan sha galaw ai:Hpa majaw nga yang, -htuk manu ai nbung hpe htawt sit lu ai arung arai ni (copper hte stainless steel zawn re ai) hpe shawng jai lang nna, finned hte threaded amyu zawn re ai nbung hpe htawt sit lu ai arung arai ni hpe lata la u.
3. Katsi ai hte katsi ai ntsin ni a lapran na nbung n bung ai lam (katsi ai hpe htawt sit ya ai n-gun)
- N-gun jaw ai npawt tara:Katsi ai shai hkat ai lam (Δt) gaw katsi ai hpe htawt sit ai "driving force" rai nga ai. Katsi ai nbung shai hkat ai lam kaba wa yang, katsi ai hpe lawan ai hku htawt sit lu nna, katsi ai hpe galai shai ai jak a atsam grau law wa ai; shingdu de, nbung laru shai hkat ai lam grai kaji yang, nbung galai shai ai lam gaw n shamu n shamawt mat na re.
- Madung lam hpe sadi ra ai:Grau kaba ai nbung laru shai hkat ai gaw grau kaja ai ngu n tsun ai. Grai n-gun n bung ai majaw, n-gun galai ai jak a shara hta grai katsi/grai katsi mat nna, jak hpe hkra machyi shangun chye ai. Teng sha galaw ai shaloi, hkamja lam hte seng ai nbung laru shai hkat ai lam hpe hkang ra ai (galaw madang hku nna 5-15℃sha rai yang htap htuk ai).
- asan sha galaw ai:Katsi ai hte katsi ai ntsin ni a shang wa ai ntsin hpe, grai kaba ai (sh) kaji ai ntsin shai hkat ai lam n byin na matu, galaw ra ai lam ni hte maren, hkrak hkra gram lajang ra ai.
4. Hka lwi ai masa
- N-gun jaw ai npawt tara:Hka lwi ai hpe "laminar lwi ai" hte "turbulent lwi ai" ngu nna garan ai. Turbulent flow hta, hka gaw grau hkrak hkra kayau kaya rai nna, bunghku ntsa na katsi ai lam gaw grau bung ai, n-gun gaw laminar flow hta grau law ai (turbulent flow n-gun gaw laminar flow hta 30% jan grau law ai). Laminar flow hta, hka gaw "katsi ai hpe htawt sit ai si ai shara" ni hpe byin shangun chye ai, dai gaw katsi ai hpe htawt sit ai lam hpe pat shingdang ya ai.
- Madung shadut ai lam ni:fluid velocity (velocity lawan wa yang, nbung laru byin wa na matu loi ai), nbung laru galai shai ai jak a kata na hkrang (baffles hte bleed vanes ni gaw nbung laru hpe shabyin ya lu ai).
- asan sha galaw ai:Fluid velocity hpe htap htuk ai hku jat ra ai (n-gun jai lang ai lam hpe jat shangun ai grai law ai velocity hpe koi ra ai); laminar lwi ai masa hpe dawm kau na matu baffle hte lwi ai lam hpe woi awn ai structure ni lawm ai heat exchange hpe lata la u.
5. N san seng ai hte n hkru n kaja ai lam (loi dik htum n mu mada lu ai n hkru n kaja ai lam)
- Hkrunlam npawt tara:Dai ntsin hta lawm ai n san seng ai lam ni (scale, sau, ga nhpu) gaw, n-gun galai ai bunghku hta hkan nna, n-gun n rawng ai layer (grai n-gun n law ai, magri hta na 1/100-1/10 daram sha) byin pru wa nna, dai gaw "heat insulation layer" hte maren rai nna, n-gun hpe grai shayawm ya lu ai; corrosion gaw bunghku hpe hkra machyi shangun nna, kaja ai nbung hpe htawt sit lu ai shara hpe shayawm kau ya nna, hka pru wa hkra pyi byin shangun na re.
- Madung shiga:Fouling thickness 1mm jat wa shagu, nbung galai shai ai atsam gaw 5%-10% yawm mat ai; aten galu n san seng ai rai yang, efficiency 40% jan yawm mat chye ai.
- asan sha galaw ai:Heat exchanger bunghku ni hpe ayan jasan jaseng ra ai (chemical hte physical jasan jaseng ai lam hpe kayau kaya galaw ai); n san seng ai arung arai ni shang wa ai hpe shayawm lu na matu, hka shang ai shara kaw filter ni hpe jung da na; n-gun n rawng ai arung arai ni hpe lata la u (titanium alloys hte Hastelloy zawn re ai ni) n-gun rawng ai hka masa ni hpe hkan sa na matu.
II. Tatut galaw mai ai sumhpa
1. Galoi mung jep joi ai lam
Hka lum ai jak a shang wa ai hte pru wa ai shara lapran na nbung laru shai hkat ai lam yawm mat ai, n-gun lang ai lam law wa ai, bunghku ntsa hta grai kaba ai n-gun rawng ai lam ni nga wa yang, "fouling blockage" (sh) "poor flow conditions" a majaw rai na re. Fouling hpe jasan jaseng na hte hka lwi ai lam hpe gram lajang na hpe ahkyak shatai nna galaw u.
2. Ahkyak ai lata la ai lam
Maigan de dut shabra na matu nbung galai ai jak ni hpe lata ai shaloi, mari ai wa a hka n-gun atsam (corrosiveness, impurity content) hte nbung galai ai lit hpe myit yu ra ai. Anhte gaw "high-hpyen n-gun rawng ai n-gun rawng ai arung arai ni + n-gun rawng ai n-gun rawng ai hkrang + counter-flow design" hte n-gun rawng ai hte ngang grin ai lam hpe rap ra hkra galaw na matu hpaji jaw ga ai.
3. Core hpe grau kaja hkra galaw ai
Gumhpraw law law n bang ai sha, aten tup jasan jaseng ai hte hka lwi ai n-gun hte nbung katsi ai lam hpe hkrak hkrak gram lajang ai gaw, nbung galai shai ai jak a kaja dik ai atsam hpe 80% jan n-gun jaw lu ai majaw, manu jahpu-htuk manu dik ai ladat rai nga ai.
Heat exchanger unit ni a lam hpe grau chye mayu ai rai yang (sh) mari mayu ai rai yang, 9988xiaoshuai@gmail.com de email sa dat u, message hpe mu ngut ai hpang aten dep bai htang na re!
Hpaji ninghkring hpung
Anhte a company gaw, hpaji ninghkring ni hpe madung tawn nna, madang tsaw ai-hpaji rawng ai hpang na -dut shabra ai hpang na daw jau hpung hpe hpaw da ai rai nna, jai lang ai ni kaw nna daw jau ai lam hte seng ai ndau shana ai lam ni hpe hkam la lu ai shaloi, aten dep bai htang ai lam ni hpe jaw na re.
7x24 hkying hkum hta sa ya ai
Anhte a company gaw anhte dut shabra ai arung arai ni a matu manu jahpu n jaw ra ai sha hpaji lam hta madi shadaw ya ai hte seng ang ai masha ni a matu hpaji lam hta sharin hpawng ni hpe galaw ya ai.
