Ma ka mahele o ka hydrocarbons maʻalahi, ʻoiai ʻaʻole kiʻekiʻe ke kiʻekiʻe o ka wela wela o ka acetylene, hana nui ia i ka wela ke puhi ʻia i mua o ka wai wai, ana ma'amau me ka wai kinoea.
Ma muli o ka liʻiliʻi o ka hana wai i ka wā o ka puhi ʻana o ka acetylene, he liʻiliʻi loa ka wela ma ka vaporization, e alakaʻi ana i nā wela kiʻekiʻe.