Selection a wɔato mu-Circuit Cooling Towers .

"3" mfomso a ɛtaa ba a wɔato mu-Circuit onwini abantenten .

Pitfall 1: Coil nneɛma a wɔpaw no yiye, a ɛde rust penetration ba na nsu a ɛretu a wɔatoto mu-circuit cooling tower coil;

Afiri 2: Sɛ wɔantumi amfa antifreeze anhyɛ medium no mu, na ɛde nsu a ɛyɛ nwini a ɛba wɔ afiri no mu bere a wɔatow nnwinnade no mu wɔ awɔw bere mu akyi, a ɛpaapae coil no mu ba;

Pitfall 3: Nsu a wɔde petepete so dodow ho akontaabu a ɛnteɛ, na ɛma ɛka a wɔbɔ wɔ anyinam ahoɔden a wɔde di dwuma ho no kɔ soro kɛse.

Nnyinasosɛm atitiriw a ɛwɔ mu a wɔato mu-Circuit onwini abantenten .

Closed-Circuit cooling towers nya onwini denam ɔhyew nsakrae a ɛnteɛ so. Nsu a ɛkyinkyini (te sɛ nsu anaa ethylene glycol solution) no sen wɔ coil a wɔato mu mu, na wɔde ɔhyew fa nsu a wɔde petepete mu ne mframa a ɛkɔ mu no so. Nnyinasosɛm titiriw a ɛne sɛ wɔato mu-Circuit cooling towers no gyina nneɛma atitiriw abiɛsa so: ɔhyew a wɔde sesa, nsu a wɔde yɛ nwini a ɛma onwini, ne mframa a ɛsen.

Ɔhyew a wɔde sesa nneɛma .

1.1 Ɔhyew a wɔde kɔ baabi foforo .

Wɔ closed-Circuit cooling towers mu no, wɔtaa de nsu di dwuma sɛ ɔhyew a wɔde fa mu. Ɔhyew a efi nnwinnade anaa nhyehyɛe a ɛsɛ sɛ wɔma ɛyɛ nwini (te sɛ mfiridwuma mu nneɛma, mframa a wɔde yɛ adwuma no condensers, ne nea ɛkeka ho) mu no, wodi kan de kɔ nsu a ɛredi akɔneaba no mu.

Nsu a ɛredi akɔneaba no sen wɔ nhyehyɛe a wɔato mu mu a ɛne abɔnten so nneɛma a atwa yɛn ho ahyia no nni nkitaho tẽẽ, na ɛnam so ma nsu no yɛ papa na ɛmma efĩ nkɔ nhyehyɛe no mu.

1.2 dwumadie a ɔhyew sesa .

Dwumadi titiriw a ɛwɔ ɔhyew sesa no mu ne sɛ wɔde ɔhyew befi nnwinnade no mu akɔ nsu a ɛredi akɔneaba no mu yiye.

Sɛ nsu a ɛkyinkyini a ɛde ɔhyew fi nnwinnade no mu kɔ ɔhyew sesa no mu a, ɔhyew no fi ɔhyew a ɛkorɔn no fã (nsu a ɛkyinkyini no fã) no kɔ ɔhyew a ɛba fam no fã (nsu a ɛyɛ nwini fã). Wɔ closed-Circuit cooling towers mu no, nsu a ɛma onwini no taa yɛ mframa, nanso nea ɛnte sɛ abantenten a ɛma onwini a ɛda hɔ no, mframa ntumi nkɔ nsu a ɛredi akɔneaba no so tẽẽ.

Nsu a ɛyɛ hyew a ɛma ɛyɛ nwini .

2.1 Cooling coil ne spray system .

Cooling coil a ɛwɔ closed-circuit cooling tower mu no, wɔtaa de dadeɛ na ɛyɛ, wɔ nkuruwankuruwa anaa akwan foforɔ so, a wɔde gu cooling tower no mu. Nsu a ɛredi akɔneaba no sen wɔ coil no mu, na ɛde ɔhyew sesa mframa a ɛwɔ coil no akyi no.

Wɔde afiri a wɔde petepete nsu a ɛredi akɔneaba no fã ketewaa bi gu nsu a ɛyɛ fɛ mu. Saa nsu a ɛtɔ gu fam yi yɛ nsu a ɛwɔ coil no ani. Sɛ mframa fa coil no mu wɔ abantenten no fan no adeyɛ ase a, nsu nketenkete no ne mframa no di nkitaho.

2.2 Nnyinasosm a εfa ɔhyew a εyε hyew a εbεyε ho .

Sɛ nsu nketenkete a wɔde petepete so no ne mframa di nkitaho a, nsu no yɛ nwini, na ɔkwan a wɔfa so ma nsu no yɛ hyew no twetwe ɔhyew kɛse bi, na efi nsu a ɛredi akɔneaba wɔ coil no mu no mu.

Bere a nsu no yow no, nsu a ɛredi akɔneaba a ɛwɔ coil no mu no hyew so tew nkakrankakra. Nsu a ayɛ nwini no di akɔneaba wɔ nhyehyɛe a wɔato mu no mu, ɛsan kɔ nnwinnade a wɔrebɛma ayɛ nwini no mu, ɛtwe ɔhyew fi nnwinnade no mu bio, na saa kyinhyia yi kɔ so ma ɛyɛ nwini bere nyinaa.

Mframa a ɛsen .

3.1 Fan dwumadie .

Fan no hyɛ mframa a ɛsen wɔ abantenten a ɛma onwini no mu no ho nkuran titiriw. Mpɛn pii no, wɔde fan no si abantenten a ɛma onwini no atifi anaa n’afã, na ɛma nhyɛso bɔne nam kyinhyia mu ba ma ɛtwe abɔnten mframa ba abantenten no mu.

Bere a mframa no akɔ abantenten a ɛma onwini no mu akyi no, ɛfa cooling coil no ne baabi a wɔde petepete no mu. Wobetumi ayɛ nsakrae wɔ ahoɔhare a wɔde dannan ne mframa dodow a ɛwɔ fan no mu no mu sɛnea ahiade ankasa a wɔde bedi ɔhyew a wɔde sesa mframa ne nsu ntam no so.

3.2 Ɔhyew a ɛsesa kwan wɔ mframa ne nsuo ntam .

Wɔ abantenten a ɛma onwini no mu no, mframa ne nsu yɛ ɔhyew a ɛne no bɔ abira. Mframa fi ase kɔ soro, bere a nsu fi soro kɔ fam (wɔ coil no mu). Saa ɔkwan a wɔfa so bu akontaa yi betumi ama nsonsonoe a ɛda mframa ne nsu ntam no ayɛ nea ɛyɛ den kakra, na ɛnam so ama ɔhyew a wɔde sesa no atu mpɔn.

Nneɛma a wɔahyehyɛ a ɛwɔ mu a wɔato mu-Circuit onwini abantenten .

Coil: Wɔde nneɛma a ɛko tia nsu (te sɛ dade a ɛnyɛ den anaa kɔbere nhama 304) na ɛyɛe, na sɛ wɔma nsu no yɛ nwini a ɛsen kɔ mu;

Spray System: Wɔde nsu a ɛyɛ nwini petepete coil no so pɛpɛɛpɛ;

Fan: Ɛhyɛ mframa a ɛsen (axial anaa centrifugal fan);

Nsu a wɔde gu mu: ɛboaboa nsu a wɔde petepete so ano na ɛkyinkyin;

Filler: Ɛma baabi a ɛda nsu ne mframa ntam no yɛ kɛse;

Medium of closed-Circuit cooling towers ne ne honam fam agyapade parameters .

Medium of closed-Circuit Cooling Towers: Medium a wɔde di dwuma wɔ closed-Circuit cooling towers mu no taa yɛ nsu ne ethylene glycol. Wɔtaa de nsu di dwuma sɛ ade a ɛwɔ kesee fam, na wɔde ethylene glycol medium di dwuma wɔ atifi fam.

Nsu a ɛwɔ nipadua mu no ho nsɛnkyerɛnne .

Parameter .	Botae (20℃) .	Botae (40℃) .	Engineering ho hia .
Nneɛma a ɛyɛ den (ρ) .	998 kg/m3 na ɛwɔ hɔ.	992 kg/m3 na ɛwɔ hɔ.	Ɛka pɔmpɛ ahoɔden ne nsu a ɛsen dodow ho akontaabu .
Ɔhyew tumi pɔtee (CP) .	4.18 kJ/(kg·℃) .	4.18 kJ/(kg·℃) .	Core parameter ma ɔhyew adesoa akontaabu .
Ɔhyew a ɛkɔ nipadua no mu (λ) .	0.598 W/(m· abodin krataa ) .	0.630 W/(m· abodin krataa ) .	Ɛka coil ɔhyew a wɔde kɔ baabi foforo no yiye .
Nneɛma a ɛyɛ nnam a ɛyɛ den (μ) .	1.002×10⁻3 PA·s .	0.653×10⁻3 PA·s .	Ɛkyerɛ sɛnea nsu no sen ne nhyɛso a ɛtɔ gu fam .
Nneɛma a ɛyɛ nwini .	0℃.	-	Safoa ma awɔw bere mu antifreeze nhyehyɛe .
Boiling point .	100℃.	-	-

Hyɛ no nsow: Nsu a ɛwɔ nipadua mu no sesa kɛse bere a ɔhyew te no. Sɛ nhwɛso no, viscosity yɛ 1.787×10⁻3 Pa·s wɔ 0℃ne 0.467×10⁻3 PA·s wɔ 60℃; Ɔhyew a ɛkɔ so no so tew kodu 0.68 W/(m·℃) wɔ 100℃.

Nneɛma a ɛwɔ nipadua no mu a ɛyɛ ethylene glycol solution (20℃) .

Parameter .	Boɔ	Nsakraeɛ sɛ wɔde toto nsuo a ɛho tew ho a .	Nkɛntɛnso a ɛwɔ nhyehyɛe mu .
Nneɛma a ɛyɛ den (ρ) .	1070 kg/m3 na ɛwɔ hɔ.	+7%	Ɛsɛ sɛ pump ahoɔden kɔ soro bɛyɛ 8% .
Ɔhyew tumi pɔtee (CP) .	3.45 kJ/(kg·℃) .	-17%	Nsu a ɛsen kɛse a ɛho hia ma ɔhyew adesoa koro no ara .
Ɔhyew a ɛkɔ nipadua no mu (λ) .	0.39 W/(m· abodin krataa ) .	-35%	Ɔhyew a wɔde kɔ baabi foforo no so tew .
Nneɛma a ɛyɛ nnam a ɛyɛ den (μ) .	3.5×10⁻3 PA·s .	+450%	Nsu a ɛsen a ɛko tia no kɔɔ soro kɛse .

Abusuabɔ a ɛda ethylene glycol dodow a ɛtaa ba ne baabi a ɛyɛ nwini ntam .

Ethylene glycol dodow a ɛwɔ mu .	Nsu a ɛyɛ nwini (degree ) .	Boiling point (℃) .	Application scenarios .
30%	-15	106	Ahwehwɛde ahorow a ɛfa antifreeze ho nyinaa .
50%	-37	110	mmeae a awɔw wom a emu yɛ den anaasɛ ɛba fam-Ɔhyew adwumayɛ tebea horow .
60%	-55	113	Extreme low-temperature environments .

Hyɛ no nsow: Dodow a ethylene glycol dodow no kɔ soro no, dodow no ara na awɔw no ba fam, nanso nsu a ɛyɛ hyew no kɔ soro kɛse (ɛhwehwɛ sɛ wɔde-ti pɔmpɛ); Ethylene glycol solution no wɔ corrosiveness kakra wɔ metals ho, enti ɛsɛ sɛ wɔde corrosion inhibitors (te sɛ borate) ka ho anaasɛ wɔde dade anaa kɔbere a ɛnyɛ den-nickel alloy coils di dwuma; Freezing point ahwehwɛde ahorow na ɛkyerɛ ethylene glycol dodow, nanso dodow a ɛkɔ soro no bɛma pɔmpɛ ahoɔden a wɔde di dwuma no akɔ soro kɛse; Wɔkamfo kyerɛ sɛ fa concentration no yɛ papa denam viscosity-temperature curve no so; Ɔhyew a ɛkɔ so no coefficient a ɛwɔ ethylene glycol solution mu no sua 30%-40% sen nsu a ɛho tew no, enti ɛsɛ sɛ wɔma coil area anaa mframa dodow kɔ soro.

Nneɛma a ɛtaa ba, nneɛma, mfaso ne ɔhaw ahorow a ɛwɔ mu-Circuit Cooling Tower Coils .

(1) Kɔbere nsukorade (kɔbere nsukorade kɔkɔɔ) .

Mfaso a ɛwɔ so:

Ɔhyew a ɛkɔ so yiye: Kɔbere kɔkɔɔ nsukorade no wɔ ɔhyew a ɛkɔ soro (380 W/m·K), a ɔhyew sesa no yiye, a ɛfata ma ɔhyew mu nsonsonoe tebea horow a ɛkɔ soro.

Porrosion a ɛyɛ den a ɛko tia: Abɔdeɛ mu tumi gyina nsuo a ɛfiri nsuo mu, acid/alkali media a ɛyɛ mmerɛ, a ɛwɔ ɔsom nkwa tenten (mpɛn pii no ɛboro mfeɛ aduonu).

Mfiridwuma mu nneɛma a ɛyɛ den: Ɛyɛ teateaa-walled (8-10mm) nanso ahoɔden a ɛkorɔn, a ɛwɔ welding mfiridwuma a ɛho akokwaw (silver-based welding rods) ne sealing adwumayɛ pa.

Mfomso ahorow: .

Ɛka kɛse: Kɔbere bo yɛ den, na mfiase no sika a wɔde hyɛ mu no bɛyɛ dade a ɛnyɛ den a wɔde hyɛ nsu mu no mmɔho 1.5.

Ɛyɛ duru kakra: emu yɛ duru sen dade a ɛnyɛ den a ɛwɔ nsu a emu yɛ duru a ne kɛse yɛ pɛ, na ɛhwehwɛ sɛ wɔde nneɛma foforo a ɛboa ma wɔde si hɔ.

(2) dade a ɛnyɛ den a wɔde fa nsu mu (304/316L) .

Mfaso a ɛwɔ so:

Nneɛma a ɛyɛ papa a ɛko tia corrosion: titiriw 316L dade a ɛnyɛ den betumi agyina mmeae a ɛyɛ den te sɛ acid a ano yɛ den ne nkyene a wɔde petepete so ano, a ɛyɛ adwuma mfe 15-20.

Nhyɛso a ɛkorɔn-Bearing Ahoɔden: Etumi gyina soro-nhyɛso adwumayɛ tebea horow na ɛnyɛ mmerɛw sɛ wobɛsɛe.

Mfomso ahorow: .

Ɔhyew a ɛba fam: Thermal conductivity (16 W/m·K) hwehwɛ sɛ coil area anaa mframa dodow kɔ soro na ama wɔatumi atua adwumayɛ a ɛyɛ adwuma yiye no so ka.

Nneɛma a ɛyɛ den sɛ wɔbɛyɛ: Welding hwehwɛ argon arc welding mfiridwuma, a mfiridwuma ho ahwehwɛde a ɛkorɔn wom, na ɛyɛ mmerɛw sɛ ɛbɛhaw nsɛe a ɛpaapae.

(3) Carbon dade a wɔde yɛ adwuma (wɔde galvanized) .

Mfaso a ɛwɔ so:

Ɛka a ɛba fam: Kɔbere nhama 1/3 kosi 1/2 pɛ, a ɛfata ma nnwuma a sikasɛm nhyehyɛe kakraa bi na ɛwɔ mu.

Easy Processing: Ɛnyɛ den sɛ weld na wotwa, ɛfata sɛ wode si hɔ ntɛmntɛm.

Mfomso ahorow: .

Poor corrosion resistance: galvanizing ho hia na ama ɔsom nkwa no atrɛw, nanso corrosion da so ara taa ba wɔ bere tenten mu (ɔsom nkwa yɛ bɛyɛ mfe 5-8).

Scaling rate a ɛkorɔn: Nea ɛyɛ mmerɛw no taa yɛ kɛse, na ɛhwehwɛ sɛ wosiesie no mpɛn pii, na ɛma ɔhyew a wɔde sesa no so tew.

(4).

Mfaso a ɛwɔ so: Nkyene a ɛyɛ den yiye (titiriw chloride ions), emu yɛ hare, ɛfata ma po mu nsu a ɛyɛ nwini ne nuklea adwumayɛ.

Mfomso: Ɛka a ɛkɔ soro kɛse (bɛyɛ dade a ɛnyɛ den mmɔho 5) ne nea ɛyɛ den sɛ wɔbɛyɛ ho adwuma.

(5) Aluminium a wɔde afra nsu mu .

Mfasoɔ: Ɔhyew a ɛyɛ hare na ɛyɛ papa kakra (bɛyɛ 200 W/m·K).

Mfomso: Mfiridwuma mu ahoɔden a ɛba fam ne sɛnea alkaline media tumi nsɛe no.