F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
158/34
F27B 15/00 (2006.01)
Patent
CA 1259252
ABSTRACT OF THE DISCLOSURE A pulse combustor apparatus including a combustor tube having open ends and containing at least one com- bustion zone where combustion of a fuel occurs and heat is released, resulting in the formation of a standing acoustic mode with nodes and anti-nodes in the tube. The combustion zone is located approximately half the distance between the acoustic pressure node and anti- node where the acoustic pressure oscillation lags the acoustic velocity oscillation by approximately one- quarter period of the oscillation. Furthermore, the combustion air must flow towards the acoustic pres- sure anti-node. The fundamental principle relating to the occurrence of the pulsations in the combustor is the interaction between the combustion processes and both the non-zero acoustic velocity and acoustic pres- sure oscillations at the designated combustion zone location. In a preferred embodiment employing a vertical combustor tube, the combustion zone is located one quarter of the length of the tube away from the bottom of the combustor tube and a heat exchanger is located three quarters of the length of the combustor tube away from the bottom of the combustor tube.
484541
Daniel Brady R.
Miller Nehemia
Zinn Ben T.
Georgia Tech Research Corporation
Meredith & Finlayson
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