Ngelixa imigangatho yePFI kunye ne-ISO ibonakala ifana kakhulu ngeendlela ezininzi, kubalulekile ukuqaphela iyantlukwano ehlala ifihlakeleyo kwiinkcukacha kunye neendlela zovavanyo ezikhankanyiweyo, njengoko iPFI kunye ne-ISO zingasoloko zithelekiseka.

Kutshanje, ndiye ndacelwa ukuba ndithelekise iindlela kunye neenkcukacha ezikhankanyiweyo kwimigangatho yePFI kunye nomgangatho obonakala ufana we-ISO 17225-2.

Khumbula ukuba imigangatho yePFI yaphuhliswa kwishishini lepellet yenkuni yaseMntla Melika, ngelixa kwiimeko ezininzi, imigangatho ye-ISO esandula kupapashwa ifana ngokusondeleyo nemigangatho ye-EN yangaphambili, eyayibhalelwe iimarike zaseYurophu. I-ENplus kunye ne-CANplus ngoku zibhekisa kwiinkcukacha zomgangatho weeklasi A1, A2 kunye no-B, njengoko kuchaziwe kwi-ISO 17225-2, kodwa abavelisi ikakhulu benza “ibakala le-A1.”

Kwakhona, ngelixa imigangatho yePFI ibonelela ngemilinganiselo yepremiyamu, umgangatho kunye namabakala aluncedo, uninzi lwabavelisi benza ibakala lokuqala. Lo msebenzi uthelekisa iimfuno zenqanaba leprimiyamu yePFI kunye nebakala le-ISO 17225-2 A1.

Iimpawu ze-PFI zivumela uluhlu lwe-bulk density ye-40 ukuya kwi-48 pounds nge-cubic foot, ngelixa i-ISO 17225-2 ireferensi yoluhlu lwe-600 ukuya kwi-750 yeekhilogram (kg) nge-cubic meter nganye. (37.5 ukuya 46.8 pounds cubic foot). Iindlela zokuvavanya zahlukile kuba zisebenzisa izikhongozeli ezinobungakanani obahlukeneyo, iindlela ezahlukeneyo zokuxinanisa kunye nobude obahlukeneyo bokugalela. Ukongeza kulo mahluko, zombini iindlela ngokwendalo zinenqanaba elikhulu lokuguquguquka ngenxa yovavanyo oluxhomekeke kubuchule bomntu ngamnye. Ngaphandle kwawo wonke lo mahluko kunye nokwahluka okukhoyo, ezi ndlela zimbini zibonakala zivelisa iziphumo ezifanayo.

Uluhlu lwedayamitha ye-PFI yi-0.230 ukuya kwi-0.285 i-intshi (5.84 ukuya kwi-7.24 millimeters (mm) Oku kukuqonda ukuba abavelisi base-US basebenzisa kakhulu i-intshi enye ye-intshi kunye neesayizi ezinkulu kancinane zokufa ISO 17225-2 ifuna ukuba abavelisi babhengeze isi-6 okanye 8 mm, nganye inonyamezelo dibanisa okanye thabatha 1 mm, ivumela uluhlu olunokubakho lwe-5 ukuya kwi-9 mm (0.197 ukuya kwi-intshi ezi-0.354) Ngenxa yokuba ubukhulu be-6 mm bufana ngokusondeleyo ne-intshi yekota enye (6.35 mm). ) ubungakanani bokufa, kuya kulindeleka ukuba abavelisi bachaze i-6 mm.

Ukomelela, indlela ye-PFI ilandela indlela ye-tumbler, apho ubukhulu begumbi buziintshi ezili-12 nge-intshi ezili-12 nge-intshi ezi-5.5 (305 mm nge-305 mm nge-140 mm). Indlela ye-ISO isebenzisa i-tumbler efanayo encinci nje kancinane (300 mm nge-300 mm nge-120 mm). Andifumananga mahluko kubukhulu bebhokisi ukuze kubangele umahluko omkhulu kwiziphumo zovavanyo, kodwa kwithiyori, ibhokisi enkulu kancinane inokucebisa uvavanyo olunobundlongondlongo kwindlela yePFI.

I-PFI ichaza izohlwayo njengezinto ezidlula kwi-intshi yesibhozo ye-intshi ye-mesh yesikrini socingo (3.175-mm umngxuma wesikwere). Kwi-ISO 17225-2, izohlwayo zichazwa njengezinto ezidlula kwi-3.15-mm yesikrini somngxuma ojikelezayo. Nangona i-screen dimensions ye-3.175 kunye ne-3.15 ibonakala ifana, kuba isikrini se-PFI sinemingxuma yesikwere kwaye isikrini se-ISO sinemingxuma ejikelezileyo, umehluko kubukhulu bokungena malunga neepesenti ze-30. Ngaloo ndlela, uvavanyo lwePFI luhlela inxalenye enkulu yemathiriyeli njengezohlwayo ezenza kube nzima ukuphumelela uvavanyo lwezohlwayo zePFI, nangona kukho imfuneko yezohlwayo ezithelekisekayo ze-ISO (zombini zibhekisa kumda wezohlwayo we-0.5 ekhulwini kwizinto ezingxolayo). Ukongeza, oku kubangela ukuba iziphumo zovavanyo lokuqina zibe malunga ne-0.7 ngaphantsi xa zivavanywa ngendlela ye-PFI.

Kwimixholo yothuthu, zombini iPFI kunye ne-ISO zisebenzisa amaqondo obushushu afanayo ngokulinganayo kuthuthu, i-580 ukuya kuma-600 degrees Celsius kwi-PFI, kunye ne-550 C ye-ISO. Andizange ndibone umahluko omkhulu phakathi kwala maqondo obushushu, kwaye ndiqwalasela ezi ndlela zimbini ukuhambisa iziphumo ezifanayo. Umda wePFI wothuthu yipesenti ezi-1, kwaye umda we-ISO 17225-2 wothuthu ngu-0.7 ekhulwini.

Ngokumalunga nobude, i-PFI ayivumeli ukuba ngaphezu kweepesenti ze-1 zibe zide kune-intshi ze-1.5 (38.1 mm), ngelixa i-ISO ayivumeli ukuba ngaphezu kweepesenti ze-1 zibe zide kune-40 mm (i-1.57 intshi) kwaye akukho pellets ubude kune-45 mm. Xa kuthelekiswa ne-38.1 mm 40 mm, uvavanyo lwe-PFI lunzima ngakumbi, nangona kunjalo, inkcazo ye-ISO yokuba akukho pellet ingaba yinde kune-45 mm inokwenza ukuba i-ISO icacise ngakumbi. Kwindlela yovavanyo, uvavanyo lwe-PFI lucokisekile ngakumbi, ngokuba uvavanyo lwenziwa kwisampulu esezantsi ye-2.5 yeekhilogram (1,134 grams) ngelixa uvavanyo lwe-ISO lwenziwa kwi-30 ukuya kwi-40 grams.

I-PFI kunye ne-ISO zisebenzisa iindlela zekhalorimitha zokumisela ixabiso lokufudumeza, kwaye zombini iimvavanyo ezikhankanyiweyo zivelisa iziphumo ezifanayo ngokuthe ngqo kwisixhobo. Kwi-ISO 17225-2, nangona kunjalo, umda ochaziweyo womxholo wamandla uchazwa njengexabiso le-calorific net, ekwabizwa ngokuba yixabiso eliphantsi lokufudumeza. Kwi-PFI, ixabiso lokufudumeza libonakaliswa njengexabiso le-calorific elipheleleyo, okanye ixabiso eliphezulu lokufudumeza (HHV). Ezi parameters azithelekiseki ngokuthe ngqo. I-ISO ibonelela ngomda wokuba iipellets ze-A1 kufuneka zibe nkulu okanye zilingane ne-4.6 kilowatt-yure ngekg (ilingana ne-7119 Btu ngeponti). Umgangatho wePFI ufuna ukuba umvelisi achaze ubuncinci beHHV njengoko bufunyenwe.

Indlela ye-ISO yeereferensi zeklorine ye-ion chromatography njengeyona ndlela iphambili, kodwa inolwimi lokuvumela iindlela ezininzi zokuhlalutya ngokuthe ngqo. I-PFI idwelisa iindlela ezininzi ezamkelweyo. Zonke ziyahluka kwimida yazo yokufumanisa kunye nezixhobo ezifunekayo. Umda we-PFI weklorine ngama-300 milligrams (mg), ngekhilogram (kg) kwaye imfuno ye-ISO yi-200 mg ngekhilogram.

I-PFI okwangoku ayinazo iintsimbi ezidweliswe kumgangatho wayo, kwaye akukho ndlela yovavanyo ichaziweyo. I-ISO inemida yeentsimbi ezisibhozo, kwaye ibhekisa kwindlela yovavanyo ye-ISO yokuhlalutya iintsimbi. I-ISO 17225-2 ikwadwelisa iimfuno zeeparamitha ezininzi ezongezelelweyo ezingaqukwanga kwimigangatho yePFI, kubandakanywa ubushushu bokuguqulwa, initrogen kunye nesulfure.

Ngelixa imigangatho yePFI kunye ne-ISO ibonakala ifana kakhulu ngeendlela ezininzi, kubalulekile ukuqaphela iyantlukwano ehlala ifihlakeleyo kwiinkcukacha kunye neendlela zovavanyo ezikhankanyiweyo, njengoko iPFI kunye ne-ISO zingasoloko zithelekiseka.