Amashanyarazi adashobora guturika ni ubwoko bwingufu zamashanyarazi zihinduka ingufu zubushyuhe kugirango zishyushya ibikoresho bizashyuha.Mugihe cyakazi, icyuma giciriritse giciriritse cyinjira mubyambu byinjizwamo igitutu binyuze mumiyoboro, kandi bigatwara ingufu zubushyuhe bwo hejuru butangwa nubushyuhe bwo gukwirakwiza amashanyarazi kumuyoboro wihariye wo guhanahana ubushyuhe imbere yubwato bushyushya amashanyarazi, ukoresheje inzira yateguwe nihame ryamazi ya termodinamike.