Izinga lokugeleza kombhobho libhekisela kumthamo wokufutha wombhobho ngesikhathi ngasinye seyunithi ngaphansi kwengcindezi yeyunithi, futhi inani liyunithi yevolumu. Njengoba ingcindezi ishintsha, izinga lokugeleza komjovo lizoshintsha. Ngokuvamile, lawa manani amabili ayalingana, futhi singawabala ngefomula elandelayo:

ifomula:

Qx isilinganiso sokugeleza esingaziwa (L / min)

Q1 isilinganiso sokugeleza esaziwayo (L / min)

F2 ingcindezi yethagethi (ibha)

F1 ingcindezi eyaziwayo (ibha)