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The Fabrication Team was created in the Spring 2011 semester to solve some of the problems of constructing plant parts on-site in Honduras. One goal of AguaClara is to empower Hondurans to be able to build the plant, and the Fabrication team works to make that easier. |
Fabrication
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The Fabrication team develops fabrication methods that are useful at AguaClara construction sites, while being feasible and economical. We research the requirements for our tasks, select appropriate design criteria, and come to recommendations for plant parts and construction techniques. We integrate our ideas into the overall plant and help future plants be built more easily and at less cost, with several beneficial features.
The Fabrication Team was created in the Spring 2011 semester to solve some of the problems of constructing plant parts on-site in Honduras. One goal of AguaClara is to empower Hondurans to be able to build the plant, and the Fabrication team works to make that easier. We work on better methods for drilling, cutting, and fitting parts, as well as improving designs to make fabrication simpler. We also work on several entrance tank problems, such as deigning a trash rack for large debris and an overflow weir so that water can bypass the plant without turning off the transmission line. We also look into connections between PVC pipes for the inlet manifold. Our approach to these tasks has been to brainstorm and come up with many possible solutions, then evaluate which ideas are feasible for the Hondurans. Then we build prototypes to test our solutions and make recommendations for future plants.
During the Spring 2015 Semester, the Fabrication sub-team is addressing four separate projects. The first is the development is the testing of the weir system, which is oriented towards use in the plant as a way to adjust flow rate through the plant. The development of the weir system and the creation of a scale model were the biggest accomplishments of last semester's Fabrication team. Along with this project, the Fabrication is designing a large-float valve to be used to join and regulate flow from the storage tank to the first main tank in the Aguaclara plant. In addition, the team is looking to create a DOM sensor and a floc hopper probe to be used in Aguaclara plants.
The DOM sensor may measure absorbance of a long wavelength (perhaps red) and a short wavelength (blue or UV). The absorbance of the long wavelength light will be a measure of the absorbance due to suspended solids. The absorbance of the short wavelength light will be a measure of the absorbance due to suspended solids plus DOM. The absorbance due to DOM can thus be obtained by subtracting the absorbance of the long wavelength from the absorbance of the short wavelength.
For the Spring 2016 semester, the Fabrication subteam has four main objectives. The first is to redesign the OStaRS. In addition, the team will be further refining the design of the floc hopper probe. The team will also be redesigning the constant head tank to improve chlorine resistance of the tank and to accommodate the larger float valve. Testing of a low cost turbidimeter will also be conducted.
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The Fabrication Team was created in the Spring 2011 semester to solve some of the problems of constructing plant parts on-site in Honduras. One goal of AguaClara is to empower Hondurans to be able to build the plant, and the Fabrication team works to make that easier. | ||
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| h5. Fabrication {float:right|border=none} {gallery:columns=1|include=Picture1.jpg, BreakingGround.jpg} {float} The Fabrication team develops fabrication methods that are useful at AguaClara construction sites, while being feasible and economical. We research the requirements for our tasks, select appropriate design criteria, and come to recommendations for plant parts and construction techniques. We integrate our ideas into the overall plant and help future plants be built more easily and at less cost, with several beneficial features. h5. Introduction and Objectives The Fabrication Team was created in the Spring 2011 semester to solve some of the problems of constructing plant parts on-site in Honduras. One goal of AguaClara is to empower Hondurans to be able to build the plant, and the Fabrication team works to make that easier. We work on better methods for drilling, cutting, and fitting parts, as well as improving designs to make fabrication simpler. We also work on several entrance tank problems, such as deigning a trash rack for large debris and an overflow weir so that water can bypass the plant without turning off the transmission line. We also look into connections between PVC pipes for the inlet manifold. Our approach to these tasks has been to brainstorm and come up with many possible solutions, then evaluate which ideas are feasible for the Hondurans. Then we build prototypes to test our solutions and make recommendations for future plants. {section} {column} h5. Task 1 : Rapid Mix Pipe and Orifice Plate h6. Goal: a. To create an air release vent through the piping after the rapid mix pipe. b. To attach an orifice plate to the pipe stub to lower water level 10cm. h6. Material Possibilities a. PVC, clear plastic b. Stainless Steel, PVC, (Coffee Can / Paint Bucket etc.) h6. Brainstorming: a. "Candy Cane" idea Double Fitting for 180 degree turn Slits to diffuse water in different directions Mesh to allow air out but not water up? b. Use flat PVC as an end stop and screwing into the stop and the pipe parallel with piping. Create flat PVC end stop that fits into the pipe and secure with perpendicular bolts to the piping. Monroe: Use Worm-drive hose connector and tighten to fit Monroe: Use metal twine and clamp both sides "Coffee Can Idea" or Bucket h6. Restrictions Ability to tap holes into end of pipe Potentially cut gasket Mold Pipe h6. Questions for APP: \*How are you cutting the piping? Would it be a straight cut if we want to place a flat piece of pvc on the end of the pipe? \*Could you make a 6inch diameter gasket of sorts? Wouldn't have to be air tight, just to adjust for h5. Task 2: Inlet Manifold for Sedimentation Tanks Question: is the end of the manifold tight against the sed tank or will there be room to slide pieces together? h6. Goal: Create a way to connect two larger diameter manifold pipes with diffuser constraints. h6. Design 1: Puzzle fit + Clamp Could be 2.5 inch thick alternating cut sections. \*Can we bore out this area? It would be very strong but can we cut it out? How much machining? h6. Design 2: Parallel pins to pipe + Clamp Cut holes parallel into manifold edge for support then include clamp. h6. Design 3: Clamp and Sheet metal constricting design Use the duct repair thing? Sheet metal overlaps on itself and tightens very water tight h6. Design 4: Modify Coupling h5. Task 3: Drain and Jet Reverser System for Sedimentation Tanks \*Can We heat Large Diameter Pipes to Mold them? h5. Task 4: Pipe Stub Valves Problems: Bulky so heavy, Pipe gets Jammed Suggestions: Use hot water or oil to move it (How feasible is this - to heat it enough to bend) O-rings are ginormous, maybe could make our own. h5. Task 5: Large Diameter Valves 50 cm h6. Team Members [Harrison Gill|htg22] [Julie Silva|jms654] [Michael Walsh|mgw53] {column} {column} h6. Documents | | Challenges | Tasks | Teach-In | Presentation | Final Report | | Summer '12 | [!Research^pdf_icon.jpeg|height=25!|^Fabrication_ChallengesSummer2012.pdf] | | | | | | Summer '11 | [!Research^word_icon.jpeg|height=25!|^FabricationChallengesSpring2011.doc] | | [!Research^ppt_icon.jpg|height=25!|^Fabrication TeachIn Summer2011.pptx] | [!Research^ppt_icon.jpg|height=25!|^Fabrication Presentation Summer2011 wo video.pptx] | [!Research^pdf_icon.jpg|height=25!|^finalreport_fabricationIEEE.pdf] [!Research^WinZip_icon.png|height=25!|^Fabrication.zip] | | Spring '11 | [!Research^word_icon.jpeg|height=25!|^FabricationChallengesSpring2011.doc] | [!Research^word_icon.jpeg|height=25!|^FabricationTasksSpring2011.doc] | [!Research^ppt_icon.jpg|height=25!|^FabricationTeachinSpring2011.ppt] | [!Research^ppt_icon.jpg|height=25!|^FabricationPresentationSpring2011.ppt] | [!Research^word_icon.jpeg|height=25!|^FabricationFinalReportSpring2011.doc] | {column} {section} |