MULTIPLE NOZZLE JET DEVICE Russian patent published in 2002 - IPC

FIELD: heating and hot water supply systems of buildings. SUBSTANCE: jet device has housing accommodating central and peripheral nozzle in form of rings slots formed by walls of branch pipes for supply of active medium and walls of mixing chambers. Peripheral passive medium supply branch pipes and, consequently, peripheral nozzles are installed over circumference equidistantly relative to central branch pipe. Area of outlet section of central branch pipe S_cb to supply passive medium is found from expression S_cb/nS_pb = 0,75-1 where S_pb is area of outlet cross-section of peripheral branch pipe; n is number of peripheral branch pipes. Area of outlet section of peripheral branch pipe is limited by ratio S_pb/S_cb = 0,12-0,2 EFFECT: improved heat exchange. 3 cl, 2 dwg