I. Mfitiaseɛ Adeyɛ ho Nsɛm a Wɔbɛsi (Nneɛma a Wɔhia ansa na Wɔapaw Nhwɛsoɔ) .
1. Kyerɛkyerɛ nneɛma a ɛyɛ hyew ne nea ɛyɛ nwini no su mu pefee (a ɛkyerɛ nnwinnade nneɛma ne adansi ahye).
Nea edi kan no, ɛho hia sɛ wohu nsɛm ho amanneɛbɔ pɔtee a ɛwɔ afã a ɛyɛ hyew ne nea ɛyɛ nwini nyinaa-te sɛ nsu a wɔde yɛ adwuma, nsu a ɛkyinkyini, nsuonwini, ngo a ɛyɛ hyew, acidic anaa alkaline solutions, anaa brine.
Nsɛm ho amanneɛbɔ ahorow nya nnwinnade no so nkɛntɛnso wɔ akwan soronko so; sɛ nhwɛso no, ɛnyɛ den sɛ chloride-a ɛwɔ mu no betumi ama pitting corrosion aba, na ɛho hia sɛ wɔde nneɛma te sɛ 316L stainless steel anaa titanium di dwuma.
Sɛ nneɛma nketenkete a ɛsensɛn so anaa nneɛma a ɛtaa yɛ ahwehwɛ wɔ nsɛm ho amanneɛbɔ no mu a, susuw ho sɛ wobɛma ɔkwan no mu kwan no mu kwan no ayɛ kɛse anaasɛ wobɛtew ahoɔhare a ɛsen no so na amma ankyere.
Sɛ aduane-grade anaa nnuru-grade ahwehwɛdeɛ fa ho a, ɛsɛ sɛ adwini no du ahoteɛ gyinapɛn ho (sɛ nhwɛsoɔ no, wɔma kwan ma wɔpaapae mu na wɔhohoro, na wɔhwɛ sɛ wɔbɛnya ɔdan bi a mmeaeɛ a awuo nni mu).
2. Kyerɛ ɔhyew tebea a ɛkɔ mu ne nea efi mu ba (a ɛkyerɛ tumi a ɛkanyan ɔhyew a ɛkɔ baabi foforo).
Ɛsɛ sɛ wɔde ɔhyew a ɛwɔ ɔkwan a wɔfa so kɔ mu ne nea wɔde wɔn ani asi so no ma afã a ɛyɛ hyew ne nea ɛyɛ nwini no nyinaa (sɛ nhwɛso no, onwini fi digrii 80 kosi digrii 50 , ɔhyew a efi digrii 20 kosi digrii 60 ).
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· Nsonsonoe a ɛwɔ ɔhyew mu no kyerɛ tumi a ɛkanyan ɔhyew a ɛkɔ baabi foforo no tẽẽ; nsonsonoe ketewaa bi a ɛwɔ ɔhyew mu hwehwɛ sɛ wɔde ɔhyew a ɛkɔ baabi kɛse.
02
· Ɛho hia nso sɛ wohu sɛ ebia "ɔhyew kwan anohyeto" bi wɔ hɔ-sɛ nhwɛso no, sɛ nhyehyɛe ahwehwɛde kyerɛ sɛ awɔw-afã hyew no ntumi ntra anohyeto pɔtee bi a.
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· Sɛ nsakraeɛ a ɛba phase mu (te sɛ condensation anaa evaporation) ka ho a, ɛsɛ sɛ wɔkyerɛ temperature profile no wɔ ɔkwan soronko so.
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3. Kyerɛ flow rate ne adwumayɛ adesoa (kyerɛ ɔhyew nsakrae nsenia) .
Ɛsɛ sɛ wɔde mass anaa volumetric flow rates ma ɔfã a ɛyɛ hyew ne nea ɛyɛ nwini no nyinaa, efisɛ eyinom ne nneɛma atitiriw a wɔde ba a wɔde bu ɔhyew adesoa no ho akontaa.
Ɛho hia sɛ wohu nsonsonoe a ɛda adwumayɛ tebea abiɛsa ntam: adesoa a ɛsen biara, adesoa a ɛfata, ne adesoa a ɛba fam koraa.
Sɛ nhyehyɛe no fa adwumayɛ a ɛsakrasakra ho (te sɛ nneɛma a wɔyɛ no bere ne bere mu) a, ɛsɛ sɛ wosusuw sɛnea wobetumi ayɛ nsakrae wɔ adwumayɛ tebea horow a ɛyɛ nnam mu ho.
Sɛnea nsu a ɛsen no ho nsɛm no yɛ pɛpɛɛpɛ no na ɛkyerɛ tẽẽ sɛ ebia ɔhyew a wɔde sesa no no sõ dodo anaasɛ ɛnyɛ kɛse.
4. Kyerɛkyerɛ nhyehyɛe no hye ne anohyeto ahorow (engineering anohyeto ahorow).
Kyerɛkyerɛ nhyɛsoɔ a ɛkɔ fam kɛseɛ a wɔma ho kwan-sɛ nhwɛsoɔ no, Ɛnnu anaa ɛne 50 kPa yɛ pɛ anaa anohyetoɔ a wɔde pɔmpɛ tumi kyerɛ.
→ Saa parameter yi kyerɛ tẽẽ sɛnea wɔbɛyɛ mprɛte akwan no ne sɛnea wɔpaw nsu a ɛsen no ahoɔhare, na ɛsom sɛ ɔhye tebea a ɛho hia a ɛka nhyehyɛe no ahoɔden a wɔde di dwuma no.
01
Kyerɛkyerɛ baabi a wɔde besisi hɔ no anohyeto ahorow mu pefee, a mfiri no sorokɔ, ɔkwan a wɔfa so kɔ mu/fi mu, ne kwan a wɔfa so siesie ka ho.
→ Atenaeɛ tebea bɛkyerɛ tẽẽ sɛdeɛ ɔhyew sesa afiri no kɛseɛ ne sɛdeɛ ɛbɛyɛ yie sɛ wɔbɛsiesie daakye.
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Hwɛ sɛ wɔma kwan ma daakye tumi ntrɛwmu (a ɛka sɛ ebia ɛsɛ sɛ wɔde mprɛte tumi foforo sie anaa).
→ Saa ade yi na ɛkyerɛ sɛ ebia ɛsɛ sɛ wɔfa modular nhyehyɛe bi na ama wɔatumi ama ɔhyew a wɔde fa nneɛma mu no akɔ soro wɔ akyiri yi.
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Hwɛ sɛ nhyehyɛe no kɔ so yɛ adwuma (a ɛka nsiesie ne redundancy nhyehyɛe).
→ Adwumayɛ kwan no nya nkɛntɛnso sɛ ebia ɛho hia sɛ wɔyɛ nnwinnade nhyehyɛe a ɛho nhia ne sɛnea wɔde ahotew ne nsiesie kyinhyia ahorow si hɔ.
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Ɔhyew Ho Nkontaabu ne Ɔhyew a Wɔde Kɔma Ahorow a Wɔkyerɛ (Core Design Phase) .
1. Ɔhyew adesoa akontaabu Q (ɛkyerɛ mfiri no "tumi kuw") .
Mfitiaseɛ akontabuo nhyehyɛeɛ:
Q=m × Cp × ΔT
Ɛsɛ sɛ wɔyɛ akontaabu ahorow wɔ ɔkwan soronko so ma ɔfã a ɛyɛ hyew ne nea ɛyɛ nwini no; wɔ nsusuwii mu no, ɛsɛ sɛ wodi nnyinasosɛm a ɛne sɛ wɔbɛkora ahoɔden so no so.
Ɛsɛ sɛ wɔyɛ nsakraeɛ de bu ɔhyeɛ a ɛyera anaa dwumadie-a ɛfa ɔhyeɛ a wɔyi gu/wɔtwe ho ho akontaa.
Q botae no ne parameter titiriw a ɛkyerɛ ɔhyew exchanger no ani.
2. Logarithmic Mean Temperature Difference (LMTD) ho akontabuo (Ahoɔden a ɛkanyan nhwehwɛmu) .
Ɔde counter-flow akontabuo fomula no di dwuma:
LMTD=(ΔT1 - ΔT2) / ln (ΔT1 / ΔT2) Ɔde ne nsa kyerɛɛ ne so, na ɔde ne nsa kyerɛɛ ne so bio.
ΔT1 ne ΔT2 gyina hɔ ma nsonsonoe a ɛwɔ ɔhyew mu wɔ n’awiei abien no.
LMTD ketewaa kyerɛ ɔhyew-nsonsonoe a ɛkanyan tumi a ɛyɛ mmerɛw, a ɛhwehwɛ nnwinnade akɛse.
Plate heat exchangers taa de counter-flow nhyehyɛe di dwuma de ma LMTD no yɛ kɛse.
3. Flow nteɛso factor F (nhyehyɛe nkɛntɛnso factor) .
• Sɛ nsuo no wɔ multi-pass anaa non{1}}ideal flow pattern a, ɛhia sɛ wɔde nteɛsoɔ adeɛ bi ba.
• Nneɛma a wɔtaa de di dwuma: 0.75–1.0.
• Multi-pass structures taa nya F-bo a ɛba fam, nanso ebetumi ama ahoɔhare kyekyɛ atu mpɔn.
• Ɛsɛ sɛ wɔde nea ɔyɛe no softwea no di dwuma de ka adwini no ho.
Plate Specifications ne Structural Nsakrae (Efi Nsusuwii So Kɔ Nnwinnade So) .
1. Plate type paw (ɛkyerɛ efficiency ne voltage drop) .
• Herringbone mprɛte: Ɔhyew a wɔsesa no yiye, nanso nhyɛso a ɛkɔ fam kɛse kakra.
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• Shallow corrugated plates: Nhyɛso a ɛba fam, ɛfata ma nsu a ɛsen kɛse, nhyehyɛe a ɛko tia a ɛba fam.
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• Mprɛte a ɛyɛ corrugated a emu dɔ: Tumi a ɛyɛ den a ɛko tia-clogging, a ɛfata ma tebea horow a ɛde efĩ ba.
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Plate angle (sɛ nhwɛso no, 30℃/60℃) nya turbulence ahoɔden ne drag su so nkɛntɛnso.
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2. Wɔde prɛte kɛse ne beae a wɔde ɔhyew sesa no hyia.
• Wɔn a wɔyɛ nneɛma ahorow de mprɛte mmeae ahorow di dwuma (0.1–3 m2/mprɛte).
• Mprɛte akɛseɛ fata ma high-flow-rate nhyehyɛeɛ, berɛ a mprɛte nketewa fata ma precision control nhyehyɛeɛ.
• Ɛsɛ sɛ wosusuw nnwinnade kɛse ne ɛka a wɔbɔ wɔ nsiesie ho bere a wɔrepaw mprɛte no.
• Wɔ beae koro no ara a wɔsesa ɔhyew no, mprɛte akɛse ahorow betumi ama nsonsonoe kɛse aba wɔ nhyehyɛe mu.
Sɛ wopɛ sɛ wohu pii fa heat exchanger units ho anaasɛ w’ani gye ho sɛ wobɛtɔ a, yɛsrɛ wo fa email kɔma 9988xiaoshuai@gmail.com, yɛbɛbua wo wɔ bere mu bere a yɛahu nkra no akyi!
Adwumayɛfo kuw
Yɛn adwumakuw no wɔ adetɔn akyi dwumadie kuw a ɛkorɔn-a ɛyɛ papa a mfiridwuma adwumayɛfoɔ yɛ wɔn titire, na wɔde nsɛm a ɛyɛ ne berɛ mu ma berɛ a wɔanya ɔsom ho nsɛm ho amanneɛbɔ afiri wɔn a wɔde di dwuma no hɔ.
7x24 nnɔnhwerew a wɔde ma
Yɛn adwumakuw no de mfiridwuma ho mmoa a wontua hwee ma wɔ nneɛma a yɛtɔn no ho na ɛyɛ mfiridwuma ho ntetee ho nhyehyɛe ma adwumayɛfo a ɛfa ho.
