Study on Applying Differential Pressure in Determining the Flow Rate of Air Conditioning and Heating System

TL;DRAbstract

The main purpose of this study is to apply regression analysis to build the relationship between flow rate and differential pressure by modeling through experimental data, and specifically use such relationship in interpreting the flow rate of air conditioning water system, in order to establish a lower-cost alternative flow rate interpretation of which the information obtained is more conveniently. For the experimental way, we installed pressure transmitters and paddle wheel flow meters in the condenser side of the chiller, air-handling unit and in the inlet and outlet ends of pump of a small air-conditioning system respectively, and then recorded the values of such device as the pump, the air-handling unit and the condenser under different use conditions as a single pump operation, multi-pumps operation in parallel, and multi-pump operation in variable frequency, to carry out the modeling of relationship between differential pressure and flow rate by actual operation data, and analyz

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