Semester Project COOLANT FLOW SYSTEM
Design- Preliminary Preliminarily the design had the pumps located above the tanks which caused cavitation issues. We started with fill rates that were way too fast using pipes that were extremely large. The system was not connected to the machine system due to a misunderstanding of how the coolant would be collected after use. Calculations were off on most tasks due to inexperience. Peer reviews and meeting with the instructor/client solved most of these problems.
Design Final Pumps were moved to locations that did not cause problems with cavitation or energy requirements. Fill rates were reduced to something more reasonable and then pipe diameters were chosen that did not violate the critical velocity. The system was connected to the machines through the reservoir tank to supply and remove coolant. Calculations were recomputed after becoming more comfortable with our abilities, and were double checked by a different team member.
Task 5- flow times and pipe length Pipe length was calculated and for the most part estimated due to the lack of detail that existed on the picture provided. We wanted to have the tanks on the roof and the reservoir tank below the ground. 90 degree elbows were used at all connections. Fill times we found and then the velocity as well as flow rates were calculated to find an acceptable pipe diameter. I completed the calculations for pipe length, flow rate,velocity and pipe diameter.
Open Channel Flow- Joshua Dillon The new building requires an open channel system in case the trash tank needs to be emptied due to a debris blockage or for general maintenance. The fluid flows down because of gravity, therefore the channel was designed to be sloping towards the open holding tank. The rectangular channel is made of a rugged material known as smooth asphalt that can resist the sun and inclement weather. The channel runs in front of the building from the trash tank to the open pool located off to the side of the building for later removal. I did the design and calculation.
Nozzles for manometers- Joshua Dillon I was tasked with coming up with a set of flow nozzles and monometers that would serve as way to verify the pump was working correctly. Nozzles we chosen as they are common and covered in depth in our book. The pressure differences were found using a spread sheet to justify diameter size. An electronic manometer was chosen for after the pump due to the lareg manometer that would be required. I did the design and calculations.
Pipe Wall Thickness We had chosen what pipes to use but needed to verify that there had a sufficient wall thickness to bare the pressures that exist after the pumps. The equation in the book was used for steel pipes. I found that the corrosion requirements fueled the majority of the required thicknesses. Our pipes are all sufficient thick already. I did the calculations.
Pumps needed Our pipe system design included 3 Sulzer pumps and 1 gravity fed system. The resourceful pipe layout designed only permitted the need for smaller pumps. The resultant pump head and the system flow rate had the biggest impact on determining the pump of best fit. These values also pinpointed pump modifications including efficiency rate and impeller size I did not do this section but helped to proof read it.
Electrical Requirements for Pumps The graphs supplied to us by Sulzer for each pump were used to find the power requirements. Flow rate was fixed so we needed to choose an appropriate impeller size. Pump 1 crossed over a curve for an impeller exactly so that one chosen. Pumps 2 and 3 did not cross exactly over an impeller and so one was chosen. The power requirements were read and then increased by 10 percent for loading reasons. I calculated the power requirements.
3D Model and Drawing A 3D model was created to give us a better image to work with. From this 3D model 2D drawings were created giving pertinent dimensions. The model showed us where we had some dimensions that were slightly off. These lengths were adjusted and energy losses were recalculated. I did the drawing and 3D model.
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