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Flow Loop Lab Report

# Flow Loop Lab Report - Flow Loop Lab Report Alex Hyatt ME...

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Flow Loop Lab Report Alex Hyatt ME 222 Lab Submitted to: Adam Greer November 9, 2007 Introduction: A flow loop has been set up to determine the experimental flow rate for the water through an orifice plate. The water flows from one pipe through an orifice plate and to another pipe where it is then dumped into a large container to find its weight. A pressure gauge is used to measure the pressure on both sides, then the delta pressure can be found and recorded. The experimental flow rate was found two ways, it was found with a time constant experimental run as well as a mass constant experimental run. The measured data was put into units for a flow rate value. Then the measured flow rate was compared to a theoretical value which was read off an orifice meter. It seems that the time constant data will be closer to the real flow rate more so than the mass constant data. Procedure: The constant head tank is filled to the desired volume, which is to be kept near constant for each trial to improve precision. The valves on each pipe are oriented so that all flow is directed from the head tank into the catch tank. The orifice meter is set to the desired volumetric flow rate. Water flow is activated by a pump and readings on the manometer are recorded as the pressure difference across the orifice plate. After a period of time, the flow is diverted and the difference for the weight of water in the catch tank is recorded as the mass of H 2 0. The experiment was run twice, as stated before, with time as a constant as well as an experiment where mass was a constant. For each experiment, nineteen different runs that were based on pre-designated pressure difference points were used to notify when to measure the designated variable (time or mass, depending on which experiment was being run) and the Measured Flow rate. For the time constant experiment, the constant time was 15 seconds and the mass varied from 19.6 lbs – 41.6 lbs. For the mass constant experiment, the constant mass was 50 kg and the time varied from 42 seconds at the start to 19 seconds for the last run. In both trials, the pressure difference points that were the marks for when to measure the data ranged from 12 H20 – 84H20.

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Flow Loop Lab Report - Flow Loop Lab Report Alex Hyatt ME...

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