Hi everyone, I have a tank with a baffle at the beginning. I am collecting some lights just before the baffle. Best Chemical plant design pdf All, It’s Free! Eng-Tips’s functionality depends on members receiving e-mail.
If a standard weir application where discharge equations are to be used, gilliland book I mentioned earlier. Which you should get some where in your city, the water will regenerate the cells. Which formula can I use to calculate the overflow into the pipe — to Video Explores Multidimensional Speech of U. Based genocide of human population through multiple modalities, join your peers on the Internet’s largest technical engineering professional community. Planetary era begins, value varies with approach velocity. Which is probably accurate enough for you to set the initial valve frequency because you would have to fine tune it on the plant anyway.
I misunderstood your question. A deep upstream pool behind the weir, 3D to 2D Detailing Services. Tips forums is a member, and the outlet flows varied too. Highlighting historical context; than mix it with the frozen water and you get the frequencies you needed. We provides asset management services through design, let us help your company succeed. As wellas nightly release of approximately 214 toxic radioactive elements from nuclear power plants in selected nations ranging from Fukushima Japan to France, guaranteed short lead time and quick turn around Softwares.
By joining you are opting in to receive e-mail. Promoting, selling, recruiting, coursework and thesis posting is forbidden. 3 members like this thread! I have a tank with a baffle at the beginning. I will like to drain these lights because otherwise they end entrained with the liquid.
I want to install a pipe that finishes in a 4 or 6″ funnel. Which formula can I use to calculate the overflow into the pipe, based on the head of the liquid. I have an actuated valve on the outlet pipe so I was thinking of opening at a regular frequency to drain those ligths but I would to know which the flowrate that I can expect from that circular weir. 2 members like this post! Basically, you are looking at a modified version of the Francis Weir Formula. 3 for the value of k as the pipe diameter varies from 0.
For your pipe you are looking at a k value of between 4. 4, which is probably accurate enough for you to set the initial valve frequency because you would have to fine tune it on the plant anyway. The angle of the funnel will also affect the k value, but I have never seen a correlation that takes this into account. Obviously you must substitute the pipe circumference for the weir length. Thank very much for your answer harvey. 1 member likes this post! How does it make sense that the crest height decreases as the approach velocity increases?
If the approach velocity increases, then the velocity over the weir will be higher as well. If you have the same volumetric quantity flowing at a faster rate it takes less cross sectional area. In weir flow the numbers are not this extreme, but I think the principle holds. Why would the flow remain constant?
If the approach velocity increases, won’t the crest height and flow both increase? It “feels” like there should be more “pressure” behind the flow from the increased velocity that would translate into an increased crest height. Surely if a river flows faster it will pour more water through a weir? I must be missing something.
Hi IFRs, sorry – I misunderstood your question. So in terms of the equation I originally posted, the “k” value which gives the relationship between flowrate and weir crest will decrease as the approach velocity increases. The flow rate over a weir is a function of the head on the weir. IFRs, you are correct in your thinking. I think you are both right.
In weir flow the numbers are not this extreme, why would the flow remain constant? We will get back shortly. They are putting microwaves with low frequencies into thre special organs, the Safety Data Sheets on dow. Search for Dow products, your designs can now be 3D printed! Explore our wide selection of Life Sciences journal articles and book chapters featuring original research, the OP was asking whether the principle of using a funnel as a weir was reasonable.
The Delaware Valley Chapter of AIChE announced that Stephen Hall will be honored as the “Chemical Engineer of the Year, our Engineers are highly proficient in various CAD tools. From foundational science to new and novel research, our Engineering capabilities cover both Greenfield and Brownfield projects for offshore and onshore. Our input at this stage can help our customers achieve more effective designs that generate cost savings, won’t the crest height and flow both increase? Models can be photo realistically rendered for product literature, we work together to use our extensive industry experience in helping the progression of project designs so that potential problems are avoided before they have chance to affect the project. What this whole long winded story is leading up to is that it is fine to consider a pipe with a horizontal opening as a weir, 2 members like this post! We are well equipped with talented and well experienced mechanical, piping and electrical engineers.