Vanotakura gasi, ndosaka methane yakakurumbira

Gasi rekupa i van iri kuwedzera kuwanda: data yekutengesa yeheavy methane, zvese zvine gasi uye ine liquefied, kubva 2018 kusvika 2019 pakukwidziridzwa kwepamusoro, kusiyana neakanyorwa nevezvenhau vanopihwa mukati dhiziri... Asi nei?

Kupihwa kwemethane, zvese gasi uye mvura, kuri kuwedzera kubudirira nekuti inopindura zvakanyanya kune zvinodiwa zviviri, kune rumwe rutivi, kuderedza mari yekushandisa uye kukanganisa kwezvakatipoteredza kwekutakura kunorema.

Yakaderedzwa mutengo pakiromita uye mweya wegirini

Muchiitiko chekutanga, pane imwe nzvimbo kg imwe mvura kana gaseous methane inodhura kusvika 50 cents zvishoma pane liter mafuta edhiziri, zviri nyore panguva ino zvichiri kuderedzwa nemutengo wepamusoro wemotokari dzepeturu. Muchokwadi, ivo vane yakakwira mutengo runyorwa kupfuura mhando dzedhiziri dzine simba rimwechete, uye kunyange zvakapetwa kaviri pane iyo mamodheru ane LPG kana. LNG, nokuda kwakakosha cryogenic matangiinodiwa kuchengetedza mvura methane pane yakaderera tembiricha uye kumanikidzwa.

Zvisinei, mari yacho yakadzorerwa kuzvitonga kukuru iyo, zvakare, inogona kupetwa kaviri kana ichienzaniswa nemethane yakachengetwa mune gasi fomu, inosvika 1.600 km. Kubva pamaonero ezvakatipoteredza, humbowo hwese huri mukufarira injini dzegasi; CO2 emissions inoderedzwa ne 15% (uye psoson odominuire zvakare kana bio methane ichibva kunowanikwazve) nitrogen oxides inowira 60% uye nepo sulfur oxides neguruva rakatsetseka zvinobviswa zvachose pamwe chete (99%).

Quadrature… cycle

Kunyangwe maererano nekuita, kuenzanisa kunoramba kuri kwechokwadi: kusiyana nechikamu motokariuko kushandurwa kuita methane kwagara kuine chinangwa chehupfumi chakaenzana nekuita tradeoff, zvirokwazvo vanozvininipisa, pamarori kunyange gasi maitiro akakwirira zvikuru kukwikwidza.

Chikonzero chiri mukati injini mhando yakashandiswa: kumota dzevatakuri, kushandurwa kwepeturu zvikamu kuita compression reshiyo zviri nani pasi iyo inoshandisa mabasa madiki uye anti-kugogodza kugona (nenhamba yeoctane yakakwira kupfuura 30% zvichienzaniswa nepeturu) methane. Hunhu hunoita kuti ive yakanyanya kukodzera kushandiswa pamhando dzeinjini a Diesel cycleizvo zvisingabatsiri pamotokari (yaive nehupfumi hwakakwana hwedhiziri), asi iyo nhasi inowana yakakwana sikweya ipapo. inorema. 

Kufambira mberi kwetekinoroji kunobvumirawo kuvimbika, ikozvino yakaenzana nedhiziri, panguva dzakasiyana service analogs kune iyo yakaderera ruzha mwero wakawedzerwa, bhenefiti kune vese mutyairi uye nharaunda, iyo inobvumira kushandiswa kwemethane modhi mu. urban setting kunyange usiku.

Mutungamiriri weIveco, veSweden mukukwevera

Zvanhasi chete vamwe vavaki yakatsigira chikonzero chekubuda kwemethane yemvura mumarori: Iveco, Scania neVolvo Trucks, kunyanya, ane marudzi mazhinji emvura inorema kana gaseous methane pane yavo rondedzero. Iveco kunyanya muchirimo 2019 (uye ne eco-kurudziro yavakapa kare 20.000 Euro yekutenga inorema LNG) inomiririrwa85% sales. Dzimwe hofori dzakaita seMercedes, iyo inoisa simba rayo pamagetsi, inogutsikana nesarudzo dzakaita seEconic NGT yakagadzirirwa kuunganidza marara.