Isingeniso
Igumbi elihlanzekile liyisisekelo sokulawula ukungcola. Ngaphandle kwegumbi elihlanzekile, izingxenye ezizwela ukungcola azikwazi ukukhiqizwa ngobuningi. Ku-FED-STD-2, igumbi elihlanzekile lichazwa njengegumbi elinokuhlunga komoya, ukusatshalaliswa, ukwenziwa kahle, izinto zokwakha kanye nemishini, lapho kusetshenziswa izinqubo ezithile ezijwayelekile zokusebenza ukulawula ukugcwala kwezinhlayiya ezihamba emoyeni ukuze kuzuzwe izinga elifanele lokuhlanzeka kwezinhlayiyana.
Ukuze kuzuzwe umphumela omuhle wokuhlanzeka ekamelweni elihlanzekile, akudingekile ukuthi ungagxili kuphela ekuthatheni izinyathelo zokuhlanza umoya, kodwa futhi kudinga inqubo, ukwakhiwa kanye nezinye izinto ezikhethekile ukuze uthathe izinyathelo ezihambisanayo: hhayi nje ukuklama okunengqondo, kodwa futhi ukwakhiwa ngokucophelela nokufakwa ngokuhambisana nokucaciswa, kanye nokusetshenziswa okufanele kwegumbi elihlanzekile nokugcinwa nokuphathwa kwesayensi. Ukuze kube nomphumela omuhle ekamelweni elihlanzekile, izincwadi eziningi zasekhaya nezakwamanye amazwe ziye zachazwa ngezindlela ezihlukahlukene. Eqinisweni, kunzima ukufeza ukusebenzisana okuhle phakathi kochwepheshe obuhlukahlukene, futhi kunzima kubaklami ukubamba ikhwalithi yokwakhiwa nokufakwa kanye nokusetshenziswa nokuphatha, ikakhulukazi okwakamuva. Ngokuqondene nezinyathelo zokuhlanza igumbi elihlanzekile, abaklami abaningi, noma ngisho namaqembu okwakha, ngokuvamile abanaki ngokwanele izimo zabo ezidingekayo, okuholela kumphumela wokuhlanzeka ongagculisi. Lesi sihloko sixoxa kuphela kafushane ngezimo ezine ezidingekayo zokufeza izidingo zokuhlanzeka ezindleleni zokuhlanza igumbi elihlanzekile.
1. Ukuhlanzeka kokuhlinzekwa komoya
Ukuqinisekisa ukuthi ukuhlanzeka kokuhlinzekwa komoya kuhlangabezana nezidingo, okubalulekile wukusebenza nokufakwa kwesihlungi sokugcina sohlelo lokuhlanza.
Ukukhetha kwesihlungi
Isihlungi sokugcina sesistimu yokuhlanza ngokuvamile sithatha isihlungi se-hepa noma isihlungi se-sub-hepa. Ngokwamazinga ezwe lami, ukusebenza kahle kwezihlungi ze-hepa kuhlukaniswe ngamabanga amane: Ikilasi A lithi ≥99.9%, Ikilasi B lingu-≥99.9%, Ikilasi C lingu-≥99.999%, Ikilasi D (lezinhlayiya ≥0.1μm) ≥99.99999999999999 izihlungi ze-sub-hepa ziyi (zezinhlayiya ≥0.5μm) 95~99.9%. Uma siphezulu ukusebenza kahle, sibiza kakhulu isihlungi. Ngakho-ke, lapho sikhetha isihlungi, akufanele sihlangabezane nezidingo zokuhlanzeka kokuhlinzekwa komoya kuphela, kodwa futhi sicabangele ukucabangela kwezomnotho.
Ngokombono wezidingo zokuhlanzeka, isimiso siwukusebenzisa izihlungi ezisebenza kancane emakamelweni ahlanzekile asezingeni eliphansi kanye nezihlungi ezisebenza kahle kakhulu zamakamelo ahlanzekile asezingeni eliphezulu. Ngokuvamile: izihlungi ezisebenza kahle kakhulu naphakathi zingasetshenziselwa izinga lesigidi esingu-1; I-sub-hepa noma izihlungi ze-hepa ze-Hepa zingasetshenziselwa amazinga angaphansi kwekilasi lezi-10,000; Izihlungi ze-Class B zingasetshenziselwa ikilasi le-10,000 kuya ku-100; nezihlungi ze-Class C zingasetshenziselwa amazinga 100 ukuya ku-1. Kubonakala sengathi kunezinhlobo ezimbili zezihlungi ongakhetha kuzo kuleveli ngayinye yokuhlanzeka. Ukuthi ukhetha izihlungi ezisebenza kahle kakhulu noma ezingasebenzi kahle kuncike esimweni esithile: lapho ukungcoliswa kwemvelo kubi kakhulu, noma isilinganiso se-exhaust yasendlini sikhulu, noma igumbi elihlanzekile libaluleke kakhulu futhi lidinga isici esikhulu sokuphepha, kulezi noma kwesinye salezi zimo, isihlungi sezinga eliphezulu kufanele sikhethwe; uma kungenjalo, isihlungi esisebenza kancane singakhethwa. Emakamelweni ahlanzekile adinga ukulawula kwezinhlayiya ezingu-0.1μm, izihlungi ze-Class D kufanele zikhethwe kungakhathaliseki ukuthi izinhlayiyana zigcwele kangakanani. Okungenhla kuvela kuphela kumbono wesihlungi. Eqinisweni, ukukhetha isihlungi esihle, kufanele futhi ucabangele ngokugcwele izici zegumbi elihlanzekile, isihlungi, kanye nesistimu yokuhlanza.
Ukufakwa kwesihlungi
Ukuqinisekisa ukuhlanzeka kokunikezwa komoya, akwanele ukuba nezihlungi ezifanelekayo kuphela, kodwa futhi nokuqinisekisa: a. Isihlungi asonakali ngesikhathi sokuthutha nokufakwa; b. Ukufakwa kuqinile. Ukuze kuzuzwe iphuzu lokuqala, izisebenzi zokwakha kanye nokufakwa kumele ziqeqeshwe kahle, nazo zombili ulwazi lokufaka izinhlelo zokuhlanza kanye namakhono okufaka amakhono. Uma kungenjalo, kuzoba nzima ukuqinisekisa ukuthi isihlungi asilimalanga. Kunezifundo ezijulile mayelana nalokhu. Okwesibili, inkinga yokuqina kokufaka incike kakhulu kukhwalithi yesakhiwo sokufaka. Ibhukwana lokuklama ngokuvamile lincoma: ngesihlungi esisodwa, ukufakwa kohlobo oluvulekile kusetshenziswa, ukuze noma ngabe ukuvuza kwenzeka, ngeke kuvuze ekamelweni; usebenzisa i-hepa air outlet ephelile, ukuqina nakho kulula ukuqinisekisa. Ukuze uthole umoya wezihlungi eziningi, i-gel seal kanye nokuvalwa kwengcindezi engalungile kuvame ukusetshenziswa eminyakeni yamuva.
I-gel seal kufanele iqinisekise ukuthi ithangi eliwuketshezi elihlangene liqinile futhi ifreyimu iyonke ikundiza efanayo evundlile. Ukuvalwa kwengcindezi embi ukwenza i-periphery yangaphandle yelunga phakathi kwesihlungi nebhokisi lokucindezela elimile kanye nozimele esimweni sokucindezela okungekuhle. Njengokufakwa kohlobo oluvulekile, noma ngabe kukhona ukuvuza, ngeke kuvuze ekamelweni. Eqinisweni, inqobo nje uma uhlaka lokufaka luyisicaba futhi ubuso bokuphela kwesihlungi buxhumene nozimele wokufaka, kufanele kube lula ukwenza isihlungi sihlangabezane nezidingo zokuqina zokufaka kunoma yiluphi uhlobo lokufaka.
2. Inhlangano ye-Airflow
Inhlangano yokugeleza komoya yekamelo elihlanzekile ihlukile kuleyo yegumbi elinomoya opholile ovamile. Kudinga ukuthi umoya ohlanzekile ulethwe endaweni yokusebenza kuqala. Umsebenzi wawo ukukhawulela nokunciphisa ukungcoliswa kwezinto ezicutshungulwayo. Kuze kube manje, lezi zimiso ezilandelayo kufanele zicatshangelwe lapho kuklanywa inhlangano yokugeleza komoya: nciphisa imisinga ye-eddy ukuze ugweme ukuletha ukungcola okuvela ngaphandle kwendawo yokusebenza endaweni yokusebenza; zama ukuvimbela uthuli lwesibili olundizayo ukuze unciphise ithuba lokungcolisa uthuli umsebenzi; ukugeleza komoya endaweni yokusebenza kufanele kufane ngangokunokwenzeka, futhi isivinini salo somoya kufanele sihlangabezane nenqubo kanye nezidingo zokuhlanzeka. Lapho ukugeleza komoya kugeleza endaweni yokubuyisela umoya, uthuli olusemoyeni kufanele lususwe ngokuphumelelayo. Khetha izindlela ezihlukene zokulethwa komoya nokubuya ngokuya ngezidingo ezihlukene zokuhlanzeka.
Izinhlangano ezihlukene zokugeleza komoya zinezici zazo kanye nobubanzi bazo:
(1). Ukugeleza kwe-unidirectional okuqondile
Ngaphezu kwezinzuzo ezivamile zokuthola ukugeleza komoya okufana okuya phansi, ukwenza kube lula ukuhlelwa kwemishini yenqubo, ikhono eliqinile lokuzihlanza, nokwenza lula izindawo ezivamile ezifana nezindawo zokuzihlanza, izindlela ezine zokuphakelwa komoya nazo zinezinzuzo nezinkinga zazo: izihlungi ze-hepa ezimbozwe ngokugcwele zinezinzuzo zokungazweli okuphansi kanye nomjikelezo omude wokubuyisela isihlungi, kodwa isakhiwo sophahla siphezulu; izinzuzo kanye nobubi bokulethwa okuphezulu kwesihlungi se-hepa esimbozwe ohlangothini kanye nokulethwa okuphezulu kwepuleti elinembobo egcwele kuphambene nalezo zokulethwa okuphezulu kwesihlungi se-hepa esigcwele. Phakathi kwazo, ukulethwa okuphezulu kwepuleti eligcwele imbobo kulula ukuqoqa uthuli endaweni engaphakathi ye-orifice plate lapho uhlelo lungasebenzi ngokuqhubekayo, futhi ukugcinwa okungalungile kunomthelela othile ekuhlanzekeni; ukulethwa kwe-dense diffuser top kudinga isendlalelo sokuxuba, ngakho-ke kufanelekile kuphela emakamelweni amade ahlanzekile ngaphezu kwe-4m, futhi izici zayo zifana nokulethwa kwepuleti eligcwele imbobo; indlela yokubuyisela umoya wepuleti elinama-grille ezinhlangothini zombili kanye nezindawo zokukhipha umoya ezibuyayo ezihlelwe ngokulinganayo ezansi kwezindonga eziphambene zifaneleka kuphela emakamelweni ahlanzekile anezikhala ezingaphansi kuka-6m nhlangothi zombili; izindawo zokubuya zomoya ezihlelwe phansi odongeni olulodwa zifaneleka kuphela amakamelo ahlanzekile anebanga elincane phakathi kwezindonga (ezifana ≤<2 ~ 3m).
(2). Ukugeleza kwe-unidirectional evundlile
Indawo yokuqala kuphela yokusebenza ingafinyelela izinga lokuhlanzeka le-100. Lapho umoya ugeleza ngakolunye uhlangothi, ukugxila kothuli kuyanda kancane kancane. Ngakho-ke, kufanelekile kuphela emakamelweni ahlanzekile anezidingo ezihlukene zokuhlanzeka zenqubo efanayo ekamelweni elifanayo. Ukusatshalaliswa kwendawo kwezihlungi ze-hepa odongeni lokuhlinzekwa komoya kunganciphisa ukusetshenziswa kwezihlungi ze-hepa futhi kulondoloze ukutshalwa kwezimali kokuqala, kodwa kune-eddies ezindaweni zendawo.
(3). Ukugeleza komoya okunyakazayo
Izici zokulethwa okuphezulu kwamapuleti e-orifice kanye nokulethwa okuphezulu kwama-diffuser aminyene kuyafana nalezi ezibalulwe ngenhla: izinzuzo zokulethwa kwezinhlangothi kulula ukuhlela amapayipi, akukho interlayer yobuchwepheshe edingekayo, izindleko eziphansi, futhi kuhambisana nokulungiswa kwezimboni ezindala. Ukungalungi ukuthi isivinini somoya endaweni yokusebenza sikhulu, futhi ukugxila kothuli ohlangothini lwe-downwind kuphakeme kunaleyo ehlangothini lomoya; ukulethwa okuphezulu kwezihlungi ze-hepa kunezinzuzo zesistimu elula, awekho amapayipi ngemuva kwesihlungi se-hepa, nokugeleza komoya okuhlanzekile okulethwa ngokuqondile endaweni yokusebenza, kodwa ukugeleza komoya okuhlanzekile kuhlakazeka kancane futhi komoya endaweni yokusebenza kufana kakhulu; nokho-ke, lapho izitolo zomoya eziningi zihlelwa ngokulinganayo noma kusetshenziswa izihlungi ze-hepa ezinama-diffuser, ukugeleza komoya endaweni yokusebenza nakho kungenziwa ngendlela efanayo; kodwa uma isistimu ingasebenzi ngokuqhubekayo, i-diffuser ijwayele ukunqwabelana uthuli.
Le ngxoxo engenhla yonke isesimweni esikahle futhi inconywa yizicaciso ezifanele zikazwelonke, izindinganiso noma izincwadi zokuklama. Kumaphrojekthi wangempela, inhlangano yokugeleza komoya ayiklanyelwe kahle ngenxa yemibandela yenhloso noma izizathu eziqondile zomklami. Okujwayelekile kufaka phakathi: ukugeleza okuqondile okuqondile kwe-unidirectional kwamukela umoya obuyayo ovela engxenyeni engezansi yezindonga ezimbili eziseduze, isigaba sendawo se-100 sithatha ukulethwa okuphezulu nokubuya okuphezulu (okungukuthi, akukho khethini elilengayo elingeziwe ngaphansi kwe-outlet yendawo yomoya), futhi amakamelo ahlanzekile anezinxushunxushu amukela ukulethwa kwe-hepa filter air outlet kanye nokubuya okuphezulu noma ukubuya okukodwa okulinganiselwe okulinganiselwe ( njll. izidingo zokuklama. Ngenxa yezicaciso zamanje zokwamukelwa okungenalutho noma okumile, amanye alawa magumbi ahlanzekile awafinyeleli ezingeni lenhlanzeko eliklanyelwe ezimweni ezingenalutho noma ezimile, kodwa ikhono lokulwa nokungcola liphansi kakhulu, futhi uma igumbi elihlanzekile lingena esimweni sokusebenza, alihlangabezani nezimfuneko.
Inhlangano efanele yokugeleza komoya kufanele isethwe ngamakhethini alenga phansi ekuphakameni kwendawo yokusebenza endaweni yasendaweni, futhi ikilasi le-100,000 akufanele lamukele ukulethwa okuphezulu kanye nokubuyisela okuphezulu. Ngaphezu kwalokho, amafekthri amaningi njengamanje akhiqiza izindawo zomoya ezisebenza kahle kakhulu ezinama-diffuser, futhi ama-diffusers awo angamapuleti okuhlobisa kuphela futhi awadlali indima yokusabalalisa ukugeleza komoya. Abaqambi nabasebenzisi kufanele bakunake ngokukhethekile lokhu.
3. Ivolumu yokuhlinzeka komoya noma isivinini somoya
Umthamo wokungena komoya owanele uwukuncibilikisa nokususa umoya ongcolile wasendlini. Ngokwezidingo ezihlukene zokuhlanzeka, lapho ukuphakama kwenetha kwegumbi elihlanzekile kuphezulu, imvamisa yokukhipha umoya kufanele yandiswe ngokufanelekile. Phakathi kwazo, umthamo wokungena komoya wegumbi elihlanzekile lezinga lesigidi esingu-1 ucatshangelwa ngokuya ngohlelo lokuhlanza olusebenza kahle kakhulu, kanti okusele kucatshangelwa ngokuya ngohlelo lokuhlanza olusebenza kahle kakhulu; lapho izihlungi ze-hepa zekilasi le-100,000 igumbi elihlanzekile zigxilwe ekamelweni lomshini noma izihlungi ze-sub-hepa zisetshenziswa ekupheleni kwesistimu, imvamisa yokukhipha umoya ingakhushulwa ngokufanele ngo-10-20%.
Kumanani anconyiwe wevolumu yokungenisa umoya angenhla, umbhali ukholelwa ukuthi: isivinini somoya ngesigaba segumbi segumbi elihlanzekile lokugeleza okukodwa siphansi, futhi igumbi elihlanzekile elineziyaluyalu linenani elinconyiwe elinesici esanele sokuphepha. Ukugeleza kwe-unidirectional okuqondile ≥ 0.25m/s, ukugeleza okuqondile okuqondile okuqondile ≥ 0.35m/s. Nakuba izidingo zokuhlanzeka zingahlangatshezwana nazo uma zihlolwa ezimeni ezingenalutho noma ezimile, ikhono lokulwa nokungcoliswa liphansi. Lapho igumbi lingena esimweni sokusebenza, ukuhlanzeka kungase kungahlangabezani nezidingo. Lolu hlobo lwesibonelo aluyona into engavamile. Ngasikhathi sinye, abekho abalandeli abalungele izinhlelo zokuhlanza ochungechungeni lwe-ventilator yezwe lami. Ngokuvamile, abaklami ngokuvamile abazenzi izibalo ezinembile zokumelana nomoya wesistimu, noma abaqapheli ukuthi ifeni ekhethiwe isendaweni ekahle yokusebenza ejikeni lesici, okuholela ekutheni ivolumu yomoya noma isivinini somoya ihluleke ukufinyelela inani lomklamo ngemva nje kokufakwa kwesistimu. Izinga lombuso likahulumeni wase-US (FS209A~B) liveze ukuthi isivinini sokugeleza komoya segumbi elihlanzekile ngendlela efanayo endaweni ephambanayo yegumbi elihlanzekile ngokuvamile ligcinwa liku-90ft/min (0.45m/s), futhi isivinini esingalingani singaphakathi kuka-±20% ngaphansi kwesimo sokungaphazanyiswa kulo lonke igumbi. Noma yikuphi ukwehla okuphawulekayo kwesivinini sokugeleza komoya kuzokwandisa amathuba okuba nesikhathi sokuzihlanza kanye nokungcola phakathi kwezikhundla zokusebenza (ngemuva kokumenyezelwa kwe-FS209C ngo-Okthoba 1987, akukho mithethonqubo eyenziwe kuzo zonke izinkomba zepharamitha ngaphandle kokugxilisa uthuli).
Ngenxa yalesi sizathu, umbhali ukholelwa ukuthi kufanelekile ukukhulisa ngokufanelekile inani lamanje lomklamo wasekhaya we-unidirectional flow velocity. Iyunithi yethu ikwenze lokhu kumaphrojekthi wangempela, futhi umphumela muhle uma kuqhathaniswa. Igumbi elihlanzekile elinezinxushunxushu linenani elinconyiwe elinesici sokuphepha esanele, kodwa abaklami abaningi abakaqinisekiswa. Lapho benza imiklamo ethile, bandisa umthamo wokungena komoya wekilasi 100,000 igumbi elihlanzekile libe izikhathi ezingama-20-25/h, ikilasi le-10,000 igumbi elihlanzekile libe izikhathi ezingama-30-40/h, kanye negumbi elihlanzekile lekilasi le-1000 libe izikhathi ezingama-60-70/h. Lokhu akukhulisi nje kuphela umthamo wemishini kanye nokutshalwa kwezimali kokuqala, kodwa futhi kwandisa izindleko zesikhathi esizayo zokunakekela nokuphatha. Eqinisweni, asikho isidingo sokwenza kanjalo. Lapho kuhlanganiswa izindlela zobuchwepheshe zezwe lami zokuhlanza umoya, kwaphenywa futhi kwalinganiswa amakamelo ahlanzekile angaphezu kwekilasi le-100 e-China. Amakamelo amaningi ahlanzekile ahlolwe ngaphansi kwezimo eziguquguqukayo. Imiphumela yabonisa ukuthi ivolumu yokungenisa umoya ekilasini 100,000 amakamelo ahlanzekile ≥10 izikhathi / h, ikilasi 10,000 amakamelo ahlanzekile ≥20 izikhathi / h, futhi ekilasini 1000 amakamelo ahlanzekile ≥50 izikhathi/h angahlangabezana nezidingo. I-US Federal Standard (FS2O9A~B) ibeka: amagumbi ahlanzekile angahambelani nendawo yonke (ikilasi 100,000, ikilasi 10,000), ubude begumbi 8~12ft (2.44~3.66m), ngokuvamile acabangela ukuthi lonke igumbi lizongena umoya okungenani kanye njalo emizuzwini emi-3 (okungukuthi izikhathi ezingu-20/h). Ngakho-ke, ukucaciswa kokuklama kucabangele i-coefficient enkulu ye-surplus, futhi umklami angakhetha ngokuphephile ngokuvumelana nenani elinconywayo levolumu yokungenisa umoya.
4. Umehluko we-Static pressure
Ukugcina ingcindezi ethile enhle ekamelweni elihlanzekile kungenye yezimo ezibalulekile zokuqinisekisa ukuthi igumbi elihlanzekile alingcolisiwe noma lingcolile ukuze kugcinwe izinga lokuhlanzeka eliklanyelwe. Ngisho namagumbi ahlanzekile okucindezela okubi, kufanele abe namakamelo aseduze noma ama-suites anezinga lokuhlanzeka elingekho ngaphansi kwezinga layo ukuze kugcinwe ingcindezi ethile enhle, ukuze kugcinwe ukuhlanzeka kwekamelo elihlanzekile lokucindezela okubi.
Inani lokucindezela eliphozithivu legumbi elihlanzekile libhekisela enanini lapho ingcindezi emile yasendlini inkulu kunengcindezi yangaphandle emile lapho yonke iminyango namafasitela evaliwe. Kufinyelelwa ngendlela yokuthi umthamo wokunikezwa komoya wohlelo lokuhlanza mkhulu kunomthamo womoya obuyayo kanye nomthamo womoya wokukhipha umoya. Ukuze kuqinisekiswe inani lokucindezela elihle legumbi elihlanzekile, abalandeli bokunikezwayo, ukubuya kanye ne-exhaust kungcono kuxhumene. Uma uhlelo luvuliwe, umshini wokuhlinzeka uqalwa kuqala, bese abalandeli be-return and exhaust baqala; lapho isistimu ivaliwe, i-fan yokukhipha i-exhaust ivaliwe kuqala, bese abalandeli be-return and supply bavaliwe ukuvimbela igumbi elihlanzekile ukuthi lingangcoliswa lapho uhlelo luvuliwe futhi luvaliwe.
Umthamo womoya odingekayo ukuze kugcinwe ukucindezela okuhle kwekamelo elihlanzekile kunqunywa ngokuyinhloko ukungangeni komoya kwesakhiwo sokulungisa. Ezinsukwini zokuqala zokwakhiwa kwegumbi elihlanzekile ezweni lami, ngenxa yokungangeni kahle komoya kwesakhiwo esivalekile, kuthatha izikhathi ezi-2 kuya kwezi-6/h zokunikezwa komoya ukuze kugcinwe ukucindezela okuhle kwe-≥5Pa; okwamanje, ukuphefumula komoya kwesakhiwo sokulondoloza kuye kwathuthukiswa kakhulu, futhi kuphela izikhathi ezingu-1 kuya kwezi-2 / h zokunikezwa komoya okudingekayo ukuze kugcinwe ukucindezela okufanayo okuhle; futhi kuphela izikhathi ezi-2 kuya kwezi-3/h zokunikezwa komoya okudingekayo ukuze kugcinwe u-≥10Pa.
imininingwane yedizayini yezwe lami [6] ibeka ukuthi umehluko wengcindezi emile phakathi kwamagumbi ahlanzekile amabanga ahlukene naphakathi kwezindawo ezihlanzekile nezindawo ezingahlanzekile akufanele ube ngaphansi kuka-0.5mm H2O (~5Pa), futhi umehluko wengcindezi emile phakathi kwendawo ehlanzekile nangaphandle akufanele ube ngaphansi kuka-1.0mm H2O (~10Pa). Umbhali ukholelwa ukuthi leli nani libonakala liphansi kakhulu ngenxa yezizathu ezintathu:
(1) Ingcindezi eqondile isho ikhono legumbi elihlanzekile lokucindezela ukungcoliswa komoya ongaphakathi ngezikhala phakathi kweminyango namafasitela, noma ukunciphisa ukungcola okungena ekamelweni lapho iminyango namafasitela evulwa isikhashana. Ubukhulu bengcindezi enhle bukhombisa amandla ekhono lokucindezela ukungcola. Yiqiniso, ukukhulu ukucindezela okuhle, kungcono (okuzoxoxwa ngakho kamuva).
(2) Umthamo womoya odingekayo ukuze ucindezeleke kahle ulinganiselwe. Ivolumu yomoya edingekayo ku-5Pa ye-positive pressure kanye ne-10Pa ye-positive icishe ihluke isikhathi esingu-1/h kuphela. Kungani ungakwenzi? Ngokusobala, kungcono ukuthatha umkhawulo ophansi wengcindezi enhle njengo-10Pa.
(3) I-US Federal Standard (FS209A~B) ibeka ukuthi lapho zonke izintuba zokungena nokuphuma zivaliwe, umehluko omncane wengcindezi enhle phakathi kwegumbi elihlanzekile nanoma iyiphi indawo eseduze yokuhlanzeka ephansi ingamayintshi angu-0.05 wekholomu yamanzi (12.5Pa). Leli nani lamukelwe amazwe amaningi. Kodwa inani lokucindezela elihle legumbi elihlanzekile aliphakeme kakhulu. Ngokusho kokuhlolwa kwangempela kobunjiniyela beyunithi yethu iminyaka engaphezu kwengu-30, lapho inani lokucindezela elihle lingu-≥ 30Pa, kunzima ukuvula umnyango. Uma uvala umnyango ngokunganaki, kuyokwenza umsindo! Kuzothusa abantu. Uma inani lokucindezela okuhle lingu-≥ 50~70Pa, izikhala phakathi kweminyango namafasitela zizokwenza ikhwela, futhi ababuthaka noma labo abanezimpawu ezingafanele bazozizwa bengakhululekile. Kodwa-ke, ukucaciswa okufanelekile noma izindinganiso zamazwe amaningi ekhaya naphesheya azicacisi umkhawulo ophezulu wengcindezi enhle. Ngenxa yalokho, amayunithi amaningi afuna kuphela ukuhlangabezana nezidingo zomkhawulo ophansi, kungakhathaliseki ukuthi umkhawulo ophezulu ungakanani. Egunjini langempela elihlanzekile ahlangabezane nalo umbhali, inani lokucindezela elihle liphezulu njenge-100Pa noma ngaphezulu, okuholela emiphumeleni emibi kakhulu. Eqinisweni, ukulungisa ukucindezela okuhle akuyona into enzima. Kungenzeka ngokuphelele ukuyilawula ngaphakathi kwebanga elithile. Kube khona idokhumenti eyethula ukuthi izwe elithile eMpumalanga Yurophu libeka inani lokucindezela elihle njengo-1-3mm H20 (cishe u-10~30Pa). Umbhali ukholelwa ukuthi lobu bubanzi bufaneleka kakhulu.
Isikhathi sokuthumela: Feb-13-2025