Abduwadood Salman Shihab; Akeel Mohammed Ali Morad
Abstract
In this research, an experimental test has been conducted to study the pumping characteristics of a vapor-bubble pump based on water properties. It also includes a trial based on the ...
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In this research, an experimental test has been conducted to study the pumping characteristics of a vapor-bubble pump based on water properties. It also includes a trial based on the obtained experimental data to correct and reconstruct the previously developed theoretical mathematical model of this bubble pump. The mathematical model that was developed for general fluid properties can be used after modification to represent the actual behavior of the water vapor-bubble pump. Most of the bubble pump configuration parameters which may affect its performance are experimentally investigated. Three different inner tube diameters (8, 10, 12 mm) with five submergence ratios (0.2, 0.3, 0.4, 0.5, and 0.6) are tested. The results showed that the bubble pump capacity increases with the thermal energy processed and continue to increase up to a maximum value then begin to decline. Each tube diameter has its own maximum discharge; the bigger tube diameter gives higher maximum discharge which is in turn increases with the increasing of submergence ratio. The experimental results of the pumping capacity are compared with those obtained from the mathematical model .Then the mathematical model is reconstructed by adding a correcting factor (K). This factor is necessary to account for the discrepancies that observed between the experimental and the theoretical results. The margin of error between the results of the resulting corrected mathematical model and the results of the practical test was acceptable and it can use this new model to analyze the performance of the bubble pump.
