This experiment was carried out to investigate the effect of response time of sensors or thermal lag due to apparatus on the accuracy of the measurements of a property. The property in this case was the saturation temperature of water measured under different values of pressure. It was believed that the difference between heating and cooling rates would reveal the effect of thermal lag or response time but this was proved untrue from analysis of the results. It has been concluded, instead, that the accuracy of the results was mostly affected by a systematic error which seemed to have been introduced by the way in which the reading were recorded. However, only further experimentation, with some improvements, can verify this conclusion.
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Flow Measurement and Instrumentation
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An experimental setup was made to analyse some of thermodynamic properties of water. In these setup two pressure cookers was used. They were connected with a brass pipe having a gateway i.e., throttling valve in it. There was a pressure gauge and a temperature gauge fixed on the cap of each pressure cooker. A flow meter connected to brass pipe by poly urethane pipe was used to measure the volume flow rate of water vapour. Steam was generated in one of the pressure cooker by boiling water and second had left empty. Now generated steam was passes through brass pipe having gateway towards second pressure cooker. In this way, all the required reading of each measuring instrument was taken by this experimental setup. Thus all the thermodynamic properties of water like Joule-Thomson curve, P-V, T-s and h-s diagrams were studying by this setup.
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