LOW-PRESSURE GAS BURNER WITH ACTIVE AIR JET Russian patent published in 1997 - IPC

FIELD: power engineering; mixing and burning of gaseous fuel with air. SUBSTANCE: mixture outlet pipe line has constant section and is provided with hollow head at the outlet. End walls of mixer reflect wave; length of mixer is equal to l=1/2 l = 1/2λ₂, diameter of mixer is equal to , length l₁ of pipe line together with head is equal to l₁= λ₂ and λ₂= C₂/f₂, where λ₂ is length of acoustic wave in oxygen of preheated compressed air; C₂ is velocity of acoustic wave in oxygen of preheated compressed air at temperature of 80 C and pressure of P=0.35 MPa or 150 C and pressure of P= 0.25 MPa, m/s; f₂ is frequency of periods of acoustic wave from compressed air source, Hz; at λ₂/λ₅= 1 length λ₅ of acoustic wave of natural gas is equal to by methane, where C₅ is velocity of acoustic wave of natural gas by methane without preheating at temperature of t₁= 20^°C=20 C and a pressure equal to P=0.35 MPa or P=0.25 MPa, m/s; p is optimal rated parameter of pulse excessive relative pressure inside chamber (relative to 101325 Pa). EFFECT: enhanced efficiency. 2 dwg