rfinch
Chemical
- Jan 12, 2012
- 1
- 0
- 0
Hello -
First time poster, several time referencer.
My question:
I have air coming off a 3hp regenerative blower at 0.433psig(12 in H2Og) on the outlet of the blower. Flowrate = 300cfm.
This flows through a 6" pipe with 3 90's, then forks into 2 L=50' ID=4" cylindrical segments.
The purpose: provide evenly distributed airflow for a composting operation.
The question: what size hole (probably need to assume), # of holes, and distribution of holes needed to ideally achieve Q = uniform through each airhole.
What has been observed in the field: the purpose of the air is to cool the self-heating pile. With evenly longitudinally-spaced 2" holes the end nearest the blower has lower temps than the end further away. Makes sense.
My thought: have larger spacing between the air holes nearer the blower, tighter spacing further away.
I don't have any CFD resources, which make my life alot easier. I could do it experimentally, but if there is a convenient approximation.. well that's why I'm posting.
Sorry for the long post.
CN:
How do you calculate air flow distribution through holes spaced long-ways on the cylindrical pipe fed by a small regenerative blower such that volumetric airflow is approximately equal through each hole.
Thanks.
First time poster, several time referencer.
My question:
I have air coming off a 3hp regenerative blower at 0.433psig(12 in H2Og) on the outlet of the blower. Flowrate = 300cfm.
This flows through a 6" pipe with 3 90's, then forks into 2 L=50' ID=4" cylindrical segments.
The purpose: provide evenly distributed airflow for a composting operation.
The question: what size hole (probably need to assume), # of holes, and distribution of holes needed to ideally achieve Q = uniform through each airhole.
What has been observed in the field: the purpose of the air is to cool the self-heating pile. With evenly longitudinally-spaced 2" holes the end nearest the blower has lower temps than the end further away. Makes sense.
My thought: have larger spacing between the air holes nearer the blower, tighter spacing further away.
I don't have any CFD resources, which make my life alot easier. I could do it experimentally, but if there is a convenient approximation.. well that's why I'm posting.
Sorry for the long post.
CN:
How do you calculate air flow distribution through holes spaced long-ways on the cylindrical pipe fed by a small regenerative blower such that volumetric airflow is approximately equal through each hole.
Thanks.
