LPG (gas ɗin man fetur)
LPG cakude ne na propane, butane da sauran abubuwan da ake samu a lokacin sarrafa kayan abinci na man fetur. A cikin yanayin farko, ba shi da launi, dandano da ƙanshi, sabili da haka, an ƙara wani wakili mai wari a cikin cakuda - wani abu mai ƙanshi (wani abu mai wari mai mahimmanci). LPG ba mai guba bane, amma baya ratsa iska kuma yana da matsakaicin sakamako mai guba. A cikin yanayin gas, ya fi iska nauyi, kuma a cikin yanayin ruwa, ya fi ruwa haske. Don haka, bai kamata a bar motocin LPG a cikin garejin da ke ƙarƙashin ƙasa ba, kamar yadda idan aka yi ɗigo, LPG koyaushe za ta zauna a mafi ƙasƙancin wurare kuma tana kawar da iska mai numfashi.
Ana samar da LPG yayin sarrafa kayan abinci na mai. Ana shayar da shi ta hanyar sanyaya ko latsa don rage ƙarar sa sau 260. Ana amfani da LPG azaman madadin mai rahusa ga mai kamar yadda kaddarorin sa suke kama. Man fetur ne mai kyawawan kaddarori, tare da ƙimar octane kusan 101-111. A cikin yanayin mu, abin da ake kira cakuda LPG hunturu (60% P da 40% B) da cakuda LPG na bazara (40% P da 60% B), i.e. canje -canje a cikin ragin juna na propane da butane.
| Propane | Bhutan | Haɗin LPG | Gasoline | |
|---|---|---|---|---|
| Samfurin | Bayani na C3H8 | Bayani na C4H10 | ||
| Nauyin kwayoyin halitta | 44 | 58 | ||
| Specific nauyi | 0,51 kg / l | 0,58 kg / l | 0,55 kg / l | 0,74 kg / l |
| Lambar Octane | 111 | 103 | 106 | 91-98 |
| Bod Waru | -43ºC | -0,5ºC | -30 zuwa -5 ° C | 30-200 ° C |
| Energyimar kuzari | 46 MJ / kg | 45 MJ / kg | 45 MJ / kg | 44 MJ / kg |
| Calorific darajar | 11070 kJ.kg-1 | 10920 kJ.kg-1 | 43545 kJ.kg-1 | |
| Hasken walƙiya | 510 ° C | 490 ° C | 470 ° C | |
| Ƙuntatattun fashewa cikin% ta ƙara | 2,1-9,5 | 1,5-8,5 |
Don ƙarin madaidaicin magana (ƙima mai ƙima, ƙima mai ƙima, da sauransu), an ayyana "Theoretical Equivalence Coefficient" don ƙimar mai da ke ɗauke da wani adadin kuzari daidai da ƙimar gas ɗin mai. Sannan an ƙaddara "ƙimar daidaiton daidai gwargwado" tsakanin amfani da injin, wanda zamu iya kwatanta shi gwargwadon iko.
| Fuel | Ka'idar Daidaitaccen Adalci | Matsakaicin daidaitawa |
|---|---|---|
| Gasoline | 1,00 | 1,00 |
| Propane | 1,30 | 1,27 |
| Bhutan | 1,22 | 1,11 |
Bari mu ɗauki mota mai matsakaicin nisan gas na kusan lita 7. Sannan (la'akari da abun da ke cikin cakuda bazara da daidaiton daidaituwa, muna samun dabara:
(yawan mai *
7 * (0,4 * 1,27 + 0,6 * 1,11) = 7 * 1,174 = 8,218 l / 100 km v lete
7 * (0,6 * 1,27 + 0,4 * 1,11) = 7 * 1,206 = 8,442 l / 100 km a cikin hunturu
Don haka, banbanci a daidai yanayin yanayi iri ɗaya zai kasance 0,224/ 100 km. Ya zuwa yanzu, waɗannan duk alkalumman ƙididdiga ne, amma sun bayyana gaskiyar cewa amfani zai girma ne kawai saboda sanyaya. Tabbas, su ma suna da alhakin ƙarin haɓakar amfani - tayoyin hunturu, lokacin hunturu farawa, ƙarin haske, dusar ƙanƙara a kan hanya, watakila ma ƙarancin ƙafar ƙafa, da sauransu.
