Hazvina mhosva kuti chii chauri kuronga: kutenga mapepa emapuranga kana kuvaka muti wemapuranga, zvakakosha kuti iwe uzive kuti zvipi zviputi zvehuni zvakanaka uye zvakashata. Nekuda kwekuvandudzwa kweindasitiri, kune anopfuura 1 huni pellets zviyero pamusika. Wood pellet standardization ndeye yakasimbiswa yakabatana yakatarwa yezvigadzirwa muindasitiri. Sezvo mitemo yeAustria (ÖNORM M1735) yakadhindwa muna 1990, nhengo dzakawanda dzeEU dzakagadzira mitemo yavo yepasi pellet, yakadai seDINplus (Germany), NF (France), Pellet Gold (Italy), nezvimwewo. Munyika, European Commission yakamisa zviyero zveEU (CEN TC335- EN 14961) yehuni yakasimba, iyo yakavakirwa paAustria zviyero (ÖNORM M1735).

Zvichienderana nemaitiro ese aripo ehuni pellets, tinokupa iwe yemhando yepamusoro yekukubatsira iwe kuona emhando yepamusoro matanda emapuranga.

Isu takapfupisa zvese zvakakosha kuti iwe utarise kuti yakanaka sei pellet yehuni. Ingotevera matanho anotevera:

Madhayamita ehuni anonyanyozivikanwa ari 6mm uye 8mm. Kazhinji, iyo diki dhayamita iri, zvirinani kuita pelletizing yainayo. Asi kana dhayamita iri pasi pe5mm, kushandiswa kwesimba kunowedzerwa uye huwandu hunodzikiswa. Zvakare, nekuda kwechimiro chepellets, huwandu hwechigadzirwa hwakamanikidzwa, hwakachengetedza nzvimbo yekuchengetedza. Uyezve, iri nyore kutakura, saka mari yekufambisa yakaderera. Pakati pezviyero zvese zviripo, pane yakajairika cognition nezve dhayamita zvikanganiso, izvo zvisingasviki 1mm.

Zvinoenderana nemhando dzese dzehuni pellets, hunyoro hunodiwa hwakafanana, kwete kupfuura 10%. Nehunyanzvi, panguva yekuita, iyo yemukati yemvura ndiyo inosungira uye mafuta. Kana hunyoro hwemukati hwakanyanya kuderera, ma pellets haakwanise kukwidziridzwa zvakakwana, saka ma pellets anogona kuve deformation, uye density yakadzikira pane yakajairika pellets. Asi kana hunyoro hwakanyanyisa, kushandiswa kwesimba kuchawedzerwa, uye vhoriyamu ichawedzerwawo, kazhinji, pellets ichava nehupamhi hwepamusoro, uye mumamiriro ezvinhu akaoma, zvinhu zvakasvibiswa zvinogona kuputika kubva pakufa kwe pellet chigayo. Yese miitiro yepellet inoratidza kuti yakanakisa mwando yehuni pellets ndeye 8%, uye yakanakisa mwando yezviyo biomass pellets i12%. Hunyoro hwepellet hunogona kuyerwa nemamita unyoro.

Iyo density yehuni pellets ndeimwe yeakanyanya kukosha kududzira, kazhinji inogona kukamurwa kuita kuwanda density uye pellets density. Iyo yakawanda density ipfuma yehupfu zvinhu, senge pellets, fomula ndiyo huwandu hwehupfu hwehupfu hwakakamurwa nehuwandu hwavanoda. Iyo yakawanda density inokanganisa kwete chete kuita kwemoto asiwo mutengo wekufambisa uye mutengo wekuchengetedza.

Kupfuurirazve, iyo pellets density zvakare iri pesvedzero yehuwandu hwayo huzhinji uye kupisa kwekuita, iyo yakanyanya density yainayo, iyo yakareba nguva yekupisa iyo inogara.

Iyo mechanical durability zvakare yakakosha parameter. Munguva yekutakura uye kuchengetedza, mapellets ane yakaderera mechanical durability anokuvadzwa nyore nyore, iyo inowedzera hupfu huripo. Pakati pemhando dzese dzebiomass pellets, mapepa ehuni anochengetedza akanyanya kusimba, angangoita 97.8%. Enzanisa kune ese biomass pellets zviyero, iyo mechanic kusimba haina kumboderera pane 95%.

Kune vese vashandisi vekupedzisira, dambudziko rinonyanya kunetseka nderokubuda, iro rinosanganisira Nox, Sox, HCl, PCCD (polychlorinated dibenzo-p-dioxins) uye madota anobhururuka. Izvo zviri mukati meNitrogen neSulfur mumapellets zvakaratidza huwandu hweNox neSox. Pamusoro pezvo, dambudziko rekuora rinotemerwa neiyo chlorine yemukati. Kuti tive nekuita zviri nani kupisa, ese mapellets zviyero zvinokurudzira yakaderera kemikari zvinhu zvemukati.