Nhanganyaya
Imba yakachena ndiyo hwaro hwekudzora kusvibiswa. Pasina kamuri yakachena, zvikamu zvinonzwa kusvibiswa hazvigone kugadzirwa-zhinji. MuFED-STD-2, imba yakachena inotsanangurwa sekamuri ine kusefa kwemhepo, kugovera, optimization, zvivakwa zvekuvaka uye zvishandiso, umo chaiwo maitiro ekushanda anoshandiswa kudzora kusungwa kwezvimedu zvinopeperetswa nemhepo kuti zvizadzise nhanho yehutsanana.
Kuti uwane hutsanana hwakanaka mukamuri rakachena, zvinodikanwa kwete kungotarisa pakutora matanho ekuchenesa mhepo, asi zvakare kuda maitiro, kuvaka uye humwe hunyanzvi kutora matanho anoenderana: kwete chete dhizaini ine musoro, asiwo nekungwarira kuvaka uye kuisirwa zvinoenderana nezvakatemwa, pamwe nekushandiswa kwakaringana kwekamuri yakachena nekuchengetedza kwesainzi uye manejimendi. Kuti tive nemigumisiro yakanaka muimba yakachena, mabhuku akawanda emumba neekunze akatsanangurwa nenzira dzakasiyana. Muchokwadi, zvakaoma kuwana kurongeka kwakaringana pakati pehunyanzvi hwakasiyana, uye zvakaoma kune vanogadzira kuti vabate kunaka kwekuvaka nekuisa pamwe nekushandiswa uye manejimendi, kunyanya yekupedzisira. Nezve nzira dzakachena dzekuchenesa kamuri dzine chekuita, vazhinji vanogadzira, kana kunyange mapati ekuvaka, kazhinji havatarise zvakakwana kumamiriro avo anodiwa, zvichikonzera kusagutsikana kwehutsanana. Ichi chinyorwa chinongotaura muchidimbu mamiriro mana anodiwa ekuwana hutsanana zvinodiwa mumatanho ekuchenesa mukamuri.
1. Mhepo inopa hutsanana
Kuve nechokwadi chekuti hutsanana hwemhepo hunoenderana nezvinodiwa, kiyi ndeyekuita uye kuiswa kwesefa yekupedzisira yekuchenesa system.
Sefa sarudzo
Sefa yekupedzisira yekuchenesa system inowanzo tora hepa sefa kana sub-hepa sefa. Zvinoenderana nemaitiro enyika yangu, kugona kwemasefa ehepa kwakakamurwa kuita mamakisi mana: Kirasi A iri ≥99.9%, Kirasi B iri ≥99.9%, Kirasi C iri ≥99.999%, Kirasi D ndeye (yezvimedu ≥0.1μm) ≥99.99999999999999999999%. sub-hepa filters vari (kune zvidimbu ≥0.5μm) 95~99.9%. Iyo yakakwirira yekubudirira, iyo inonyanya kudhura sefa. Naizvozvo, pakusarudza sefa, isu hatifanirwe kungosangana nemhepo inopihwa utsanana zvinodiwa, asiwo funga nezvehupfumi.
Kubva pamaonero ezvido zvehutsanana, musimboti ndewekushandisa mafirita akadzikama emakamuri akadzikama akachena uye mafirita epamusoro-soro emakamuri akachena. Kazhinji kutaura: mafirita epamusoro-uye epakati-anoshanda anogona kushandiswa kweiyo miriyoni nhanho; sub-hepa kana Kirasi A hepa mafirita anogona kushandiswa kumatanho ari pasi pekirasi 10,000; Kirasi B mafirita anogona kushandiswa kirasi 10,000 kusvika zana; uye Masefa eKirasi C anogona kushandiswa kumazinga 100 kusvika ku1. Zvinoita sekuti kune marudzi maviri emasefa ekusarudza kubva padanho rehutsanana rega rega. Zvingave zvekusarudza mafirita epamusoro-soro kana akaderera zvinoenderana nemamiriro ezvinhu chaiwo: kana kusvibiswa kwezvakatipoteredza kwakakomba, kana chiyero chemukati chemukati chakakura, kana imba yakachena inonyanya kukosha uye inoda kuchengetedzwa kwakakura, mune idzi kana imwe yezviitiko izvi, firiji yepamusoro-kirasi inofanira kusarudzwa; kana zvisina kudaro, sefa yepasi inogona kusarudzwa. Kune makamuri akachena anoda kutonga kwe 0.1μm zvidimbu, Kirasi D mafirita anofanirwa kusarudzwa zvisinei neinodzorwa particle concentration. Izvo zviri pamusoro zvinongobva pakuona kwesefa. Muchokwadi, kuti usarudze yakanaka sefa, iwe unofanirwawo kufunga zvizere maitiro ekamuri rakachena, sefa, uye sisitimu yekuchenesa.
Sefa yekuisa
Kuti uve nechokwadi chekuchena kwemhepo, hazvina kukwana kuti uve nemafirita akakodzera chete, asiwo kuve nechokwadi: a. Iyo sefa haina kukuvadzwa panguva yekufambisa uye kuiswa; b. Kuiswa kwakasimba. Kuzadzikisa pfungwa yekutanga, vashandi vekuvaka nekuisa vanofanira kunge vakanyatsodzidziswa, vaine ruzivo rwekuisa masisitimu ekuchenesa uye hunyanzvi hwekuisa hunyanzvi. Zvikasadaro, zvichave zvakaoma kuona kuti sefa haina kukuvara. Pane zvidzidzo zvakadzama panyaya iyi. Chechipiri, dambudziko rekuisa tightness rinonyanya kuenderana nemhando yekumisikidza chimiro. Bhuku rekugadzira rinowanzokurudzira: kune imwe sefa, yakavhurika-mhando yekumisikidza inoshandiswa, kuitira kuti kunyangwe kana kuvuza kuchiitika, kurege kudonha mukamuri; uchishandisa yakapedza hepa mhepo yekubuda, tightness zvakare iri nyore kuve nechokwadi. Kune mhepo yemafirita akawanda, gel chisimbiso uye isina kunaka kuisirwa chisimbiso inowanzoshandiswa mumakore achangopfuura.
Gel chisimbiso inofanirwa kuve nechokwadi chekuti tangi yemvura yakabatana yakasimba uye furemu yese iri pane imwechete yakachinjika ndege. Negative pressure yekuisa chisimbiso ndeyekuita iyo yekunze periphery yejoint pakati pesefa neiyo static pressure box uye furemu mune yakaipa pressure state. Kufanana neyakavhurika-mhando yekumisikidza, kunyangwe paine kuvuza, haipindire mukamuri. Muchokwadi, chero bedzi iyo yekumisikidza furemu yakatsetseka uye iyo sefa yekupedzisira kumeso iri mukusangana yunifomu neiyo yekumisikidza furemu, zvinofanirwa kuve nyore kuita kuti sefa isangane neiyo yekumisikidza zvinodiwa mune chero mhando yekuisa.
2. Airflow sangano
Sangano rekuyerera kwemhepo rekamuri rakachena rakasiyana neiro remukamuri ine mhepo inotonhorera. Zvinoda kuti mweya wakachena uendeswe kunzvimbo yekushandisa kutanga. Basa rayo nderekudzikamisa uye kuderedza kusvibiswa kune zvakagadziriswa zvinhu. Kuti izvi zviitike, mitemo inotevera inofanirwa kutariswa pakugadzira sangano rekufambisa kwemhepo: kuderedza eddy currents kuti usaunza kusvibiswa kubva kunze kwenzvimbo yebasa munzvimbo yebasa; edza kudzivirira guruva rechipiri kubhururuka kuderedza mukana weguruva rinosvibisa workpiece; mhepo inoyerera munzvimbo yebasa inofanira kunge yakafanana sezvinobvira, uye mhepo yaro yemhepo inofanira kusangana nemaitiro uye zvinodiwa zvehutsanana. Kana mhepo ichiyerera ichienda kumhepo yekudzoka, guruva riri mumhepo rinofanira kubviswa. Sarudza akasiyana mhepo yekuendesa uye kudzoka modhi zvinoenderana nekusiyana kwehutsanana zvinodiwa.
Masangano akasiyana-siyana ekuyerera kwemhepo ane hunhu hwawo uye chiyero:
(1). Vertical unidirectional kuyerera
Pamusoro pezvakanakira kuwana yunifomu inodzika kuyerera kwemhepo, kufambisa kurongeka kwemidziyo yekushandisa, kugona kwakasimba kuzvichenesa, uye kurerutsa zvivakwa zvakajairwa senge zvivakwa zvekucheneswa, nzira ina dzekupa mhepo dzine zvadzo zvakanakira nekuipira: yakazara-yakafukidzwa hepa mafirita ane zvakanakira kushoma kuramba uye kureba sefa yekutsiva kutenderera, asi mutengo wesirin'i wakaoma; uye mutengo wesirin'i wakaoma; zvakanakira uye zvakaipira padivi-yakafukidzwa hepa sefa yepamusoro kuburitsa uye yakazara-gomba ndiro yepamusoro dhizaini yakatarisana neiyo yakavharwa yakazara-yakafukidzwa hepa sefa yepamusoro yekutumira. Pakati pavo, iyo yakazara-gomba ndiro yepamusoro kutakura iri nyore kuunganidza guruva mukati mepamusoro peplate ye orifice apo hurongwa husina-kuenderera mberi huchishanda, uye kusachengetedza kusina kunaka kune humwe hutsanana hwehutsanana; dense diffuser kumusoro kuburitsa kunoda kusanganisa layer, saka inokodzera chete kumakamuri akachena akareba pamusoro pe4m, uye maitiro ayo akafanana neakazara-gomba ndiro yepamusoro kutakura; nzira yekudzoka kwemhepo yeplate ine grilles kumativi ose uye mhepo inodzoka yakarongeka yakarongeka pazasi pemadziro akatarisana inokodzera chete kumakamuri akachena ane mambure epakati asingasviki 6m kumativi ose maviri; mhepo yekudzoka yakarongedzerwa pasi pemadziro e-single-side inokodzera chete kumakamuri akachena ane chinhambwe chiduku pakati pemadziro (akadai ≤<2 ~ 3m).
(2). Horizontal unidirectional kuyerera
Nzvimbo yekutanga chete yekushanda inogona kusvika pahutsanana hwe 100. Apo mhepo inoyerera kune rumwe rutivi, guruva rinowedzera zvishoma nezvishoma. Nokudaro, inokodzera chete kumakamuri akachena ane zvinodiwa zvakasiyana zvehutsanana kune imwechete nzira muimba imwe chete. Iko kugoverwa kwenzvimbo kwemafirita ehepa pamadziro ekufambisa kwemhepo kunogona kuderedza kushandiswa kwehepa mafirita uye kuchengetedza mari yekutanga, asi kune eddies munzvimbo dzenzvimbo.
(3). Kutenderera kwemhepo
Hunhu hwekuburitsa kwepamusoro kweplateti dze orifice uye kuburitswa kwepamusoro kwe dense diffuser kwakafanana nezvakataurwa pamusoro apa: zvakanakira kuendesa padivi zviri nyore kuronga mapaipi, hapana tekinoroji interlayer inodiwa, mutengo wakaderera, uye wakanakira kugadziridza mafekitori ekare. Izvo zvisingabatsiri ndezvokuti mhepo inomhanya munzvimbo yekushanda yakakura, uye guruva rekuisa padivi remhepo rinodzika kupfuura iro riri padivi remhepo; iyo yepamusoro yekutumira yehepa filter outlets ine zvakanakira hurongwa huri nyore, hapana mapaipi kuseri kwehepa sefa, uye mhepo yakachena inoyerera yakananga kunzvimbo yekushanda, asi mhepo yakachena inopararira zvishoma nezvishoma uye mhepo munzvimbo yekushanda inofanana; zvisinei, kana mhepo dzakawanda dzemhepo dzakarongeka zvakaenzana kana hepa sefa yemhepo ine diffusers inoshandiswa, mhepo inoyerera munzvimbo yekushanda inogonawo kuitwa yakawanda yunifomu; asi kana iyo sisitimu isiri kushanda ichienderera, iyo diffuser inowanzoita guruva kuunganidza.
Iyo nhaurirano iri pamusoro yese iri munzvimbo yakanaka uye inokurudzirwa neakakodzera nyika yakatarwa, zviyero kana zvinyorwa zvekugadzira. Mumapurojekiti chaiwo, sangano rekuyerera kwemhepo harina kugadzirwa zvakanaka nekuda kwechinangwa mamiriro kana zvikonzero zvemugadziri. Zvakajairwa zvinosanganisira: vertical unidirectional flow inotora mhepo yekudzoka kubva kuzasi kwemadziro maviri ari padyo, kirasi yenzvimbo 100 inotora kutakura kwepamusoro uye kudzoka kwepamusoro (kureva kuti, hapana chidzitiro chinorembera chinowedzerwa pasi penzvimbo yekubuda kwemhepo), uye makamuri asina kugadzikana akachena anotora hepa sefa yemhepo yekubuda kwepamusoro uye kudzoka kwepamusoro kana imwe-divi yakayerwa yakaderera kudzoka (nezvimwe zvakakura zvakange zvave zvakachena kuyerera kwemhepo pakati pemadziro emadziro emhepo). zvinodiwa zvekugadzira. Nekuda kwezvimiro zvazvino zvekugashira kusina chinhu kana kwakamira, mamwe emakamuri aya akachena haasvike padanho rehutsanana rakagadzirwa mumamiriro asina chinhu kana akadzikama, asi kugona kupindira kwekudzivirira kusvibiswa kwakadzikira, uye kana imba yakachena ichipinda munzvimbo yekushanda, haizadzise zvinodiwa.
Sangano rakarurama rekuyerera kwemhepo rinofanira kuiswa nemaketeni akarembera kusvika pakukwirira kwenzvimbo yekushanda munzvimbo yemunharaunda, uye kirasi ye100,000 haifaniri kutora kutakura kwepamusoro uye kudzoka kwepamusoro. Pamusoro pezvo, mafekitori mazhinji parizvino anogadzira madhiri emhepo ane ma diffuser, uye madhirivha awo anongori ekushongedza orifice mahwendefa uye haaite basa rekuparadzira kuyerera kwemhepo. Vagadziri nevashandisi vanofanirwa kubhadhara zvakanyanya kune izvi.
3. Mhepo yekupa vhoriyamu kana kumhanya kwemhepo
Vhoriyamu yekufemesa yakakwana ndeyekunyorovesa nekubvisa mweya wakasviba wemukati. Zvinoenderana nemhando dzakasiyana dzehutsanana, kana kureba kwekamuri yakachena kwakakwira, iyo frequency yemhepo inofanirwa kuwedzerwa zvakakodzera. Pakati pavo, vhoriyamu yemhepo ye1 miriyoni-nhanho yakachena kamuri inotariswa maererano nepamusoro-inoshanda yekuchenesa system, uye mamwe ese anotariswa maererano nepamusoro-inoshanda yekuchenesa system; apo mafirita ehepa ekirasi 100,000 kamuri yakachena akaiswa mukamuri yemuchina kana mafirita e-sub-hepa anoshandiswa pakupera kwegadziriro, iyo frequency yemhepo inogona kuwedzerwa zvakafanira ne10-20%.
Kune iyo iri pamusoro pevheti yevhoriyamu inokurudzirwa maitiro, munyori anotenda kuti: kumhanya kwemhepo kuburikidza nekamuri chikamu cheunidirectional kuyerera yakachena kamuri yakadzikira, uye mhirizhonga yakachena imba ine kukosha kunokurudzirwa ine yakakwana yekuchengetedza chinhu. Vertical unidirectional flow ≥ 0.25m / s, yakatwasuka unidirectional inoyerera ≥ 0.35m / s. Kunyangwe izvo zvinodikanwa zvehutsanana zvinogona kuzadzikiswa kana zvakaedzwa zvisina chinhu kana static mamiriro, iyo anti-kusvibisa kugona kwakashata. Kamwe imba yacho inopinda mumamiriro ekushanda, utsanana hunogona kusasangana nezvinodiwa. Mhando iyi yemuenzaniso haisi nyaya yega. Panguva imwecheteyo, hapana mafeni akakodzera ekunatsa masisitimu mune yangu nyika yeventilator series. Kazhinji, vagadziri kazhinji havaite maverengero echokwadi ekupikisa kwemhepo, kana kusaona kana fan yakasarudzwa iri pane imwe nzvimbo yakanaka yekushanda pane yehunhu curve, zvichikonzera huwandu hwemhepo kana kumhanya kwemhepo kutadza kusvika kune kukosha kwekugadzira nguva pfupi mushure mekunge system yaiswa. Iyo US federal standard (FS209A ~ B) yakataura kuti kufambisa kwemhepo kwekamuri yakachena isina nzira kuburikidza nekamuri yakachena yemukati mechinjiro inowanzo chengetwa iri 90ft/min (0.45m/s), uye kukurumidza kusafanana kuri mukati ± 20% pasi pemamiriro ekusavhiringidza mukamuri rose. Chero kuderera kukuru kwekumhanya kwemhepo kuchawedzera mukana wekuzvichenesa nguva uye kusvibiswa pakati penzvimbo dzekushanda (mushure mekushambadzwa kweFS209C muna Gumiguru 1987, hapana mirau yakaitwa kune ese parameter zviratidzo kunze kwekuiswa kweguruva).
Nechikonzero ichi, munyori anotenda kuti zvakafanira kuwedzera iko zvino dhizaini kukosha kweiyo unidirectional flow velocity. Chikwata chedu chakaita izvi mumapurojekiti chaiwo, uye mhedzisiro yacho yakanaka. Imba ine mhirizhonga yakachena ine kukosha kwakakurudzirwa ine yakaringana kuchengetedza chinhu, asi vazhinji vanogadzira havasati vavimbiswa. Paunenge uchigadzira magadzirirwo chaiwo, vanowedzera vhoriyamu yemhepo yekirasi 100,000 yakachena kamuri kusvika 20-25 nguva / h, kirasi 10,000 imba yakachena kusvika 30-40 nguva / h, uye kirasi 1000 yakachena imba kusvika 60-70 nguva / h. Izvi hazvingo wedzera huwandu hwemidziyo uye yekutanga mari, asi zvakare inowedzera ramangwana rekuchengetedza uye manejimendi mutengo. Kutaura zvazviri, hapana chikonzero chokudaro. Pakuunganidza nyika yangu yekuchenesa mhepo matanho ehunyanzvi, anopfuura kirasi zana kamuri yakachena muChina yakaferefetwa uye kuyerwa. Makamuri akawanda akachena akaedzwa pasi pemamiriro ezvinhu ane simba. Zvigumisiro zvakaratidza kuti mavheti emhepo ekirasi 100,000 makamuri akachena ≥10 nguva / h, kirasi 10,000 makamuri akachena ≥20 nguva / h, uye kirasi 1000 makamuri akachena ≥50 nguva / h anogona kusangana nezvinodiwa. Iyo US Federal Standard (FS2O9A~B) inotara: makamuri asina unidirectional akachena (kirasi 100,000, kirasi 10,000), kureba kwekamuri 8 ~ 12ft (2.44 ~ 3.66m), kazhinji funga kamuri rose kuti rive nemhepo inofefetera kamwechete kamwe pamaminitsi matatu (kureva 20 times/h). Naizvozvo, iyo dhizaini yedhizaini yakatora yakakura yakawedzera coefficient, uye mugadziri anogona kusarudza zvakachengeteka zvinoenderana neinokurudzirwa kukosha kwevhoriyamu yemhepo.
4. Static pressure musiyano
Kuchengeta imwe dzvinyiriro yakanaka mukamuri yakachena ndeimwe yemamiriro akakosha ekuona kuti imba yakachena haina kana kushomeka kusvibiswa kuchengetedza yakagadziridzwa hutsanana mwero. Kunyangwe kune yakashata dzvinyiriro dzakachena makamuri, inofanirwa kunge iine makamuri ari padyo kana masutu ane hutsanana mwero kwete kuderera pane iyo nhanho kuchengetedza kumwe kudzvanywa kwakanaka, kuitira kuti hutsanana hwekumanikidza kwakashata imba yakachena inogona kuchengetedzwa.
Iyo yakanaka yekumanikidza kukosha kwekamuri yakachena inoreva kukosha kana indoor static pressure yakakura kupfuura yekunze static pressure kana magonhi ese nemahwindo akavharwa. Inowanikwa nenzira iyo mhepo yekugovera vhoriyamu yehutsanana system yakakura kupfuura kudzoka kwemhepo vhoriyamu uye kupera simba kwemhepo. Kuti uve nechokwadi chekumanikidza kwakanaka kwekamuri rakachena, kugovera, kudzoka uye kupera kwemafeni mafeni zviri nani kuvharirwa. Kana iyo system ikavhurwa, fan yekugovera inotangwa kutanga, uye ipapo mafeni ekudzoka uye kupera anotangwa; kana sisitimu yadzimwa, fan yekupedza inodzimwa kutanga, uyezve mafeni ekudzoka uye ekupa anodzimwa kudzivirira imba yakachena kubva pakusvibiswa kana sisitimu yabatidzwa nekudzimwa.
Mhepo yemhepo inodiwa kuchengetedza kudzvanywa kwakanaka kwekamuri yakachena kunonyanya kutariswa nemhepo yekumira kwechimiro chekuchengetedza. Mumazuva ekutanga ekuvakwa kwekamuri yakachena munyika yangu, nekuda kwekusadzikama kwemhepo kweiyo yakakomberedzwa chimiro, zvakatora 2 kusvika 6 nguva / h yemhepo inopihwa kuchengetedza kudzvanywa kwakanaka kwe ≥5Pa; pari zvino, kuvharwa kwemhepo kwegadziriro yekugadzirisa kwakagadziridzwa zvikuru, uye chete 1 kusvika 2 nguva / h yemhepo inodiwa kuti uchengetedze zvakafanana zvakanaka; uye chete 2 kusvika ku3 nguva / h yemhepo inopihwa inodiwa kuchengetedza ≥10Pa.
magadzirirwo enyika yangu [6] anoratidza kuti static pressure musiyano pakati pemakamuri akachena emagiredhi akasiyana uye pakati penzvimbo dzakachena nenzvimbo dzisina kuchena haifanirwe kunge iri pasi pe 0.5mm H2O (~5Pa), uye static pressure musiyano pakati penzvimbo yakachena nekunze haifanirwe kunge iri pasi pe1.0mm H2O (~10Pa). Munyori anotenda kuti kukosha uku kunoratidzika kunge kwakadzikira nekuda kwezvikonzero zvitatu:
(1) Positive pressure inoreva kugona kwekamuri rakachena kudzvanyirira kusvibiswa kwemweya wemukati kuburikidza nemukaha uri pakati pemagonhi nemahwindo, kana kuderedza zvinosvibisa zvinopinda mukamuri kana magonhi nemahwindo zvavhurwa kwenguva pfupi. Saizi yekumanikidza kwakanaka kunoratidza kusimba kwekusvibisa kudzvinyirira kugona. Zvechokwadi, iyo yakakura kudzvinyirira kwakanaka, zviri nani (izvo zvichakurukurwa gare gare).
(2) Uwamu hwemhepo hunodiwa kuti hutsigire zvakanaka hushoma. Huwandu hwemhepo hunodiwa ku5Pa yakanaka kudzvanywa uye 10Pa yakanaka kudzvanywa inongova 1 nguva / h yakasiyana. Wadii kuzviita? Zviripachena, zviri nani kutora muganho wakaderera wekumanikidza kwakanaka se10Pa.
(3) The US Federal Standard (FS209A~B) inotaura kuti kana misuwo yose nekubuda yakavharwa, musiyano wepasi pemutsindo wakanaka pakati pekamuri yakachena uye chero nzvimbo iri padyo neutsanana hwakaderera i0.05 inches yekoramu yemvura (12.5Pa). Kukosha uku kwakagamuchirwa nenyika dzakawanda. Asi iyo yakanaka yekumanikidza kukosha kwekamuri yakachena haisi iyo yakakwirira nani. Zvinoenderana neiyo chaiyo mainjiniya miedzo yeyuniti yedu kweanopfuura makore makumi matatu, kana iyo yakanaka yekumanikidza kukosha iri ≥ 30Pa, zvakaoma kuvhura musuwo. Kana iwe ukavhara musuwo zvisina hanya, ichaita bang! Zvinozovhundutsa vanhu. Kana iyo yakanaka yekumanikidza kukosha iri ≥ 50 ~ 70Pa, mikaha pakati pemasuo nemahwindo ichaita muridzo, uye vasina simba kana avo vane zvimwe zviratidzo zvisina kufanira vanonzwa kusagadzikana. Nekudaro, izvo zvinoenderana nezvinodiwa kana zviyero zvenyika dzakawanda kumba nekune dzimwe nyika hazvitsanangure muganho wepamusoro wekumanikidza kwakanaka. Nekuda kweizvozvo, zvikwata zvakawanda zvinongotsvaga kuzadzisa zvinodiwa zvemuganho wakaderera, zvisinei nekuti muganho wepamusoro wakawanda sei. Mukamuri chaiyo yakachena yakasangana nemunyori, iyo yakanaka yekumanikidza kukosha kwakakwira se100Pa kana kupfuura, zvichikonzera mhedzisiro yakaipa kwazvo. Kutaura zvazviri, kugadzirisa kumanikidzwa kwakanaka hakusi chinhu chakaoma. Zvinokwanisika zvachose kuzvidzora mukati mehumwe mutsara. Paive negwaro raizivisa kuti imwe nyika iri kuMabvazuva kweEurope inotaura kukosha kwekumanikidza kwakanaka se1-3mm H20 (inenge 10~30Pa). Munyori anotenda kuti uwandu uhwu hwakakodzera.
Nguva yekutumira: Feb-13-2025