Spiral tube heat exchanger hpe gaw, shell kata de spiral hkrang hku shinggrup da ai tube langai (sh) law law hpe bang nna galaw ai.Shi a laklai ai lam ni gaw, n-gun n law ai hkrang hte, dingyang pipe ni hta grau kaba ai katsi htawt sit ai shara nga ai. Viscosity grau law ai ntsin ni hpe katsi shangun ai (sh) katsi shangun ai hta lang mai ai.
Spiral katsi galai ai jak ni (spiral tube heat exchangers hte spiral plate heat exchangers ni lawm ai) ni gaw shanhte a laklai ai lwi ai lam hkrang masa hte laklai nga ai.Dai gaw nbung galai shai ai lam hta ahkyak ai akyu ni nga ai hte shara hpe jai lang ai lam hta mung ahkyak ai akyu ni nga ai.Raitim, npawt nhpang n bung ai lam ni hte gram lajang na matu yak hkak ai lam ni zawn re ai shadawn sharam lam ni mung nga ai.
1.Core Akyu ni
Katsi ai hpe galai shai ai atsam kaba ai hte katsi ai hpe htawt sit ai coefficient kaba ai
Dai hka gaw spiral channel kata de lwi shang wa ai shaloi,centrifugal n-gun a shamu shamawt ai npu hta n-gun ja ai n-gun rawng ai lam byin pru wa ai.(Turbulent lwi ai lam hpe Reynolds nambat kaji ai shara hta lu la mai ai, n-gun rawng ai Re > 1000.)Hka n-gun rawng ai coefficient a thermal resistance hpe grai shayawm kau ya ai. shell-hpe-tube n-gun galai shai ai jak ni (madung hku nna 2-shell-and-tube nbung galai ai jak ni hta na htam 2-3 lang law ai).
Katsi ai hte katsi ai hka ni gaw counter-current (sh) cross-flow hku lwi nga ai (spiral plate heat exchangers ni gaw law malawng gaw san seng ai counter{2}}current rai nga ai).Katsi ai nbung n bung ai lam kaba,N-gun hpe grau kaja hkra jai lang lu ai, nbung galai shai ra ai lam langai sha a matu jak rung a galu kaba ai lam mung kaji ai.
2.Compact hkrang hte shara law law jai lang ai
Dai nbung galai ai shara gaw spiral flow channel hta shinggyin tawn da ai,Unit volume langai hta nbung galai ai shara gaw shell-and-tube nbung galai shai ai shara hta 2-4 lang law ai.Scaling byin wa na masa n nga ai sha, san seng hkra galaw na matu hte gram lajang na matu grai loi ai (spiral plate nbung galai shai ai jak ni a matu).
Turbulent flow hta, hka gaw pipe bunghku ntsa hta grai ja ai hka lim ai atsam nga ai, dai gaw nhprang arai ni htum mat ai hpe atsawm sha pat shingdang lu ai; n-gun loi mi sha pru wa ai rai yang pyi, backflushing (sh) chemical hte jasan jaseng ai hku nna shaw kau mai ai.
Spiral plate nbung galai ai jak ni gaw shanhte a lwi ai lam ni hta si ai shara n nga ai, hka lwi ai lam langai sha rai nna, shell-and-tube nbung galai ai jak ni hta baffles hte tube bundle lapran na gap ai majaw byin pru wa ai fouling manghkang hpe koi lu ai.
Shi gaw hka amyu myu hpe hparan lu ai, dai hta n-gun ja ai hka (turbulence gaw hka n-gun hpe shayawm ya lu ai) hte hka n-gun n law ai hka (spiral flow channel hpe loi loi hte pat kau lu ai n rai, n-gun hpe hka hte rau shapraw kau lu ai) ni lawm ai.
3.N-gun n law ai hte bungli galaw ai manu n law ai:
Turbulent flow gaw n-gun n law ai (shell-and-tube heat exchangers ni hta n-gun shayawm ai lam hte shingdaw yang), pump n-gun n law ra ai, aten galu-bungli galaw ai shaloi n-gun n law ai.
Shi gaw grai sawng ai hkrang masa nga ai, galaw shapraw na matu yak ai, yak hkak ai welding galaw ai lam ni lawm ai, gram lajang na matu mung n mai byin ai. shell- hte-tube katsi galai shai ai jak ni hta grau nna n-gun-hkam sharang lu ai atsam (shell-hte-hka htungkatsi galai shai ai can gaw shell hpe n-gun ja hkra galaw nna, n-gun ja ai-tubing hpe lang nna grau tsaw ai n-gun ni hpe lu la mai ai).N-gun ja ai- masa (n-gun > 10MPa zawn re ai) hta jai lang ai lam hpe shadawn sharam da ai.
Lahta na gaw spiral wound tube heat exchanger ni a akyu ara hte n kaja ai lam ni hpe ngai chye na ai lam re.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, anhte gaw na a email hpe mu ai hte rau nang hpe bai htang ya na ga ai!
