Kwilizwe leenkqubo zokulawula amanzi-ukusuka kwi-HVAC kunye nokuqhubekeka kwamachiza kunyango lwamanzi - ukhetho olufanelekileyo lwevalve yiparamount. Kodwa kwenzeka njani ukuba umntu azikhethele ngokwenzululwazi ye-SPARL esebenzayo ukuze aqinisekise ukuba inkqubo isebenza ngozinzo, ukusebenza kakuhle, nokuchaneka? Impendulo ilele kwiparamitha esisiseko: iI-CV-Ukuhamba kwequla kunye ne Kv-Into yokuhamba.
Ukuhamba kokuhamba kolwimi lwendalo iphela ngokukhululekileyo komthamo we-valve ukugqithisa ulwelo. Ngokuyintloko iza ngeendlela ezimbini: Kv (isetyenziswe kwinkqubo ye-metric) kwayeI-CV (isetyenziswe kwinkqubo ye-impem). Ukuqonda iinkcazo zabo, Iindlela zokubala, kunye nobudlelwane bubuchule obukhulu kuyo bonke injineli kunye nengcali.
1. Ukuyinika Ixabiso le-KV (Into yokuhamba)
Ixabise ntoni i-KV?
Ixabiso le-KV kukuhamba ngokuhamba kwexesha elisebenzayo kakhulu eYurophu nakwimimandla elandela imigangatho ye-IEC. Inkcazo yayo icacile kakhulu:
Inkcazo: Ixabiso le-KV lixabiso lokuhamba kwamanzi ngaphakathiIimitha ze-cubic ngeyure (m³ / h) Oko kuya kudlula kwivalve enethontsilo ye1 ibha ngaphesheya, kubushushu bamanzi phakathi kwe-5-30 ° C.
Ngamagama alula, I-KV ngumlinganiso ngqo womthamo wokuhamba kwe-valve phantsi kweemeko ezisemgangathweni.Ixabiso eliphezulu le-KV libonisa amandla amakhulu ukuhamba. Lo mlinganiso omiselweyo, ihlala isekwe kwimilinganiselo efana ne-din en 60534, ivumela ukuthelekisa okulungileyo nochanekileyo kweevali ezahlukeneyo.
Ifomula ye-kV
Kwizicelo zobunjineli zehlabathi zehlabathi, Ifomula eguquguqukayo engaphezulu efunekayo ukubala i-KV eyimfuneko kuyo nayiphi na imeko enikezelweyo.
- Ifomula ngokubanzi ngenxa yotywala:Kv = q * √(Sg / ΔP)
- Ifomula eyenziwe lula yamanzi (Ezixhaphake kakhulu):
Ukusukela kumxhuzulane othile (Sg) amanzi 1, Ifomula yenze lula:Kv = q / √δP
Kv Iiparamitha zeFomula:
- Kv: Ukuhamba komgangatho ofanelekileyo ekufuneka ubalwe.
- Q: Ulwelo olufunekayoumgangatho wohambo ngevali, kwiiyunithi zem³ / h.
- ΔP: Icineze ngaphesheya kwevali (P_inlet – P_outlet), kwiiyunithi zeibha.
- Sg: IUbunzima obuthile yolwelo (Umyinge we-fluid's).
2. Ukuqonda ixabiso le-CV (Ukuhamba kwequla)
Ithini ixabiso le-CV?
Ixabiso le-CV kukuhamba kwendlela esetyenziswayo eNyakatho Melika (ikakhulu i-United States). Kukulingana ne-KV, kodwa ngokusekwe kwinkqubo yeyunithi ye-imperial.
Inkcazo: Ixabiso le-CV lixabiso lokuhamba kwamanzi ngaphakathiI-U.S. Iilitha ngomzuzu (I-GPM) Oko kuya kudlula kwivalve enethontsilo ye1 ipowuke kwi-intshi nganye (psi) ngaphesheya, kwiqondo lobushushu lama-60 ° F.
Ifomula ye-CV
Njenge-kv, I-CV inefomula ehambelana nokubala okusebenzayo.
- Ifomula ngokubanzi ngenxa yotywala:I-CV = Q * √(Sg / ΔP)
- Ifomula eyenziwe lula yamanzi:I-CV = Q / √δP
Ibalulekile! Ngelixa isakhiwo sikaFomula sifana ne-KV's, iIiyunithi zahlukile ngokupheleleyo:
- I-CV: Ukuhamba kwendlela yokuhamba.
- Q: Inqanaba lokuhamba, kwiiyunithi zeI-US GPM.
- ΔP: Uxinzelelo, kwiiyunithi zepsi.
- Sg: Ubuninzi obuthile bombhobho (amanzi = 1).
3. Kv vs. I-CV: Umahluko ophambili kunye nokuguqulwa
Ngelixa zombini i-kv kunye ne-CV ichaza ubungakanani be-valve, Iimpawu zabo zamanani ziyahluka ngenxa yokuthembela kwabo kwiinkqubo ezahlukeneyo zeyunithi.
Kv vs. I-CV ISISHWANKATHELO SOKUXELWA KWAKHONA:
| Inqaku | Ixabiso le-KV | Ixabiso le-CV |
| Inkqubo yeyunithi | Metric | Imperiya |
| I-Teemp yeMidiya. | 5 – 30° c | 60° f |
| Iyunithi yokuhamba | m³ / h | I-US GPM |
| Icandelo loxinzelelo | ibha | psi |
I-KV ukuya kwifomula ye-CV
Nakuphi na i-valve inikwe, ubudlelwane phakathi kwawo i-kv kunye nexabiso le-CV lilungisiwe:
Cv = 1.156 × kv
Kv = 0.865 × cv
UMZEKELISO UTSHINTSHO:
Khawufane ucinge ukuba unedatha yemveliso evela kwi-U.S. Oko kucacisa i-valveCv = 50. Ukusebenzisa oku kuYilo lweNkqubo yeMetric, ungabala ixabiso layo le-kv:
- Ubalo:
Kv = 0.865 × 50 = 43.25 - Ukuqukumbela:
Le valve inexabiso le-kV malunga43.25.
4. Ixabiso le-kvs: I-valve ephezulu
Ithini ixabiso le-kvs?
Amaphepha e-valves, Uya kuhlala dibana nekotaKvs.
IIxabiso le-KVS lixabiso elithile le-KV le-valve xa ikwi100% Indawo evulekileyo ngokupheleleyo. Imele i-valve ye-valve ye-valve kwaye iphawundiseko olusisiseko elimiselwe yiyoyilo lwayo.
Abavelisi bavavanya kwaye baqinisekise ngexabiso le-KVS kwimodeli nganye ye-valve kunye nobungakanani.
Ngaba a “Cvs” Ixabiso elikhoyo?
Ngelixa ithenjelwa, Nantsi laphoayisebenzi ngokubanzi, Ibali elinikezelweyo “Cvs” Kwishishini. Endaweni yoko, Xa i-valve “I-CV” ikhankanywe ngaphandle kokucacisa ipesenti yokuvula, Iqondwe ngaphakathi ukuba ithetheIxabiso le-CV kwisikhundla esivulekileyo ngokupheleleyo. Oku kubhekiselwa kwiIkaliwe okanyeUbuninzi be-CV.
5. Eyona njongo iphambili ye-kv: Inzululwazi yenzululwazi
Eyona njongo iphambili yokubala i-KV ikuNgokwayesoyisiso kukhetha ubungakanani be-veli. Le nkqubo ibandakanya amanyathelo amabini:
- Bala iifuneka i-kv Ngokusekwe kwinqanaba lokuhamba okufunwayo kwenkqubo (Q) kunye nefy yoxinzelelo eyamkelekileyo (ΔP).
- Khetha imveliso yeValveI-KVS ilungele i-KV efunekayo kv.
Umthetho weGolide weValve Subing yi-KV: I 20-80% Uluhlu
Ulawulo lokuhamba oluzinzileyo nolwenziweyo, Ishishini icebisa ngamandla oku kulandelayo:
I-KV ebaliwe iKV kufuneka iwele phakathi 20% kwaye 80% ye-valve evulekileyo ye-kvs evulekileyo ye-KVS.
Olu luhlu lwaziwa njenge-valveIndawo yokulawula.
- Kutheni ungaphantsi 20%? (Ivalve engaphezulu)
Ukuba i-KV efunekayo ye-KV liqhezu elincinci lee-kvs ze valve, ivalve kufuneka ivule kancinci (I-E.G., 5%) Ukuhlangabezana nemfuno. Oku kwenza ukuba inkqubo inovelwano kakhulu; intshukumo encinci yomncedisi ibangela utshintsho olukhulu ekuhambeni, ekhokelela ekungazinzini, “ukuzingela” (i-oscicition), kunye nokunxiba ngokukhawuleza kwi-valve. Kufana nokuzama ukupakisha ipaki yepaki ye-Supercar. - Kutheni kungengentla 80%? (Ivalve engaphantsi)
Ukuba i-KV efunekayo isondele kakhulu kwii-kvs ze valve, I-valve iya kuphawuleka ngokubanzi ngexesha lokusebenza kwesiqhelo. Xa inkqubo ifuna ukuhamba kwe-peak, Ivalve ingenamandla ongezelelweyo (i-headroom) ukuyibonelela. Iphulukana nobuchule bayo “imodyuli” kwaye ngempumelelo iba yindawo yokutshintsha / yokutshintsha, Ukuphulukana nalo lonke igunya lokulawula. Kufana nokuqhuba imoto encinci kunye ne-pedal ukuya kumgangatho wendlela ephezulu-akukho mandla ishiyekileyo yokukhawulezisa kwaye ifike.
6. IBALULEKO YABAYIBHILE KWI-VOVI YENDLELA YOKUZIPHATHA
Ukubaluleka kwe-KV ezahlukeneyo ngokuxhomekeke ekubeni ngumsebenzi ophambili we-valveUlawulo lweModu okanye ilulakwi / i-off yodwa.
①. I-valves yolawulo: I-kv yipharamitha ephambili
Kwiivali zokulungisa, Umxholo we-KV yeyona nto iphambili kuyilo lwabo kunye nokhetho.
- I-valves ezisebenzayo: I-Globe Valvers, Ukulinganisa iivavu, Ukulawula iivavu.
- Kutheni i-KV ibalulekile:
- I-KV yokusebenzela: I 20-80% Umthetho uyanyanzeliswa. Ukukhetha ii-kvs ezingalunganga zithetha ukuba wonke umhlaba olawulayo uya kusilela.
- Ukuhamba kweempawu ze-curve (Kv vs. Ukuhamba): Le jika ichaza umgangatho we-valve. Aumgca Ijika ilungile ngoxinzelelo oluzinzileyo lwehla, ngelixaIpesenti elinganayo Ijika ilungele iinkqubo ezinemigangatho eyahlukileyo yehla, Ukubonelela ngolawulo oluhle kwizivuni eziphantsi kunye nolawulo oluyi-Coarse kwizinto eziphezulu.
Umthombo womfanekiso: ukulawula.com
②. Layita icima (Ukubekwa wedwa) Ivali: I-kvs ngumlinganiso wokusebenza kakuhle
Iivalves ezisetyenziselwa kuphela ukuvula okanye ukuvala umgca, Injongo yahlukile.
- I-valves ezisebenzayo: Iivalvu zeBhola, Iivalvu zeSango, I-phunga.
- Kutheni i-kvs sisibonisi sentsebenzo: Injongo kukuba unayoubuncinci obufanelekileyo xa ivulekile. AIxabiso eliphezulu le-KVS kuthetha ukungaphantsi kwenyawo, eziguqulela ngqo kwiI-DORR DORT (ΔP). Oku kuqinisekisa ukuba i-piidang piple ye-Dowream ifumana ireyithi yayo yokuqhuba efunekayo ukugcina imveliso ngelixa kwangaxeshanye ukunciphisa inkunkuma yamandla.
7. Izicelo ezisebenzayo: Apho i-KV ibalulekile
Ukubala i-KV ayinakuphikiswa nakweliphi na ishishini okanye inkqubo efuna ukunyanzelwa kwemozulu ye-fluish.
- Hvac & Isixhobo seSoftware: Kubalulekile ukulawula ukuhamba okufihliweyo / amanzi okuhamba kwamanzi (Ahus, Fcus) Ukuqinisekisa ukuthuthuzelwa komntu kunye nokwandisa ukusebenza kwamandla.
- Inkqubo yeMizi-mveliso (Ikhemikhali, Ipetrochemical): Eyona nto ibaluleke kakhulu ekulawuleni ukutya, Ukulawulwa kweqondo lobushushu, kunye nokungathathi cala, Apho kuchaneka ifuthe ngqo kwimveliso kunye nokhuseleko.
- Amanzi & Unyango lwamanzi amdaka: Iyimfuneko kwidosi efanelekileyo yekhemikhali (I-E.G., I-Dlocculants, Iintsholongwane) kunye nokulawula ukuqhuma kwe-aeration kwiincam zokucheba ukuze kusebenze impumelelo ngonyango kunye nokunciphisa iindleko zokusebenza.
- Ukutya, Isiselo & Amayeza: Isiqinisekiso seBatch Littency kunye noMgangatho weMveliso ngokulawula ngokuthe ngqo ukuxuba, amaqondo obushushu, kwaye icocekile-endaweni (I-cip) iinkqubo.
Ukuqukumbela
Ixabiso le-KV kunye ne-CV lixabisa intsingiselo, ubalo, kwaye kakhulu kakhulu - “20-80%” Umgaqo wokuBhalisa sisitshixo sokuyila iinkqubo zokulawula ulwelo ezizinzileyo, ngokufanelekileyo, kwaye ithembekile. Ngexesha elizayo xa ubona i-kvs okanye ixabiso le-CV kwidatha yedatha, Uya kuyazi ngokuqinisekileyo ukuba kuthetha ntoni kwaye ungayisebenzisa njani ukwenza isigqibo sobunjineli.
Ukusuka kwithiyori ukuya kwisicelo: Ukufumana isisombululo sakho
Ngoku ukuba ixhotywe ngokuqonda okucacileyo kwe-KV kunye ne-CV amaxabiso, Inqanaba elilandelayo libeka olo lwazi lokuziqhelanisa. Xa kufikwa kuphiko lokufumana i-valves kwiinkqubo zakho ezigxekayo - ngakumbi Ukuthengwa kwe-Bulk okanye iiprojekthi ezinkulu-Ukulo lwengcali ngengcali kubalulekile.
Iqela likaBMag Iingcali zoLawulo lweLwandle ukulungele ukunceda. Nokuba kufuneka uqhubeke nenkqubo ekhoyo okanye uyilo olutsha ovela emhlabeni, Sidibanisa ulwazi olunzulu lwesicelo kunye ne-inventri ebanzi yokuqinisekisa ukuba ufumana ivalve efanelekileyo, ngalo lonke ixesha.
