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Classification of the most dominating factors of the model, pumped water

Classification of the most dominating factors of the model, pumped water

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A new type of hydraulic ram pump, called "Raseta pump", was invented, patented and crafted in Madagascar. The peculiarity of this hydram pump over conventional ones is that there is a spring in each of the waste and delivery valves. In addition, the usual air balloon is replaced by a balloon with 4 springs. Thus, this paper aims at theoretically st...

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... The new design of HRP with springs system was invented by Rajaonison and Rakotondramiarana. 13 Many variables are involved in the operation of the system. The influence of supply head, air chamber pressure, and waste valve beats per minute on HRP performance was experimentally determined by Asvapoositkul et al. 11 The results reveal that the HRP characteristics are functions of the waste valve beats per minute and the supply head. ...
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The combined pump and hydraulic ram pump (HRP) was presented to evaluate the technical feasibility for increasing pump head. This method was used to demonstrate a possible low‐cost alternative solution to supply water in remote areas. It illustrated the case where energy in rivers was not enough to drive HRP and a pump alone could not lift water to the required head. The HRP was connected in series with the pump. The experiment on the combined system operation was investigated. The system was working only at a certain range of flow rates for a power supply by the pump. Therefore, HRP was adjusted to pump water in the range that the waste valve was functioning. The combined system can operate at a low flow rate with a high head without extra energy and no overloading. It reveals that the more discharge head is required, the less flow can be lifted which results in a high number of valve beats per minute of the waste valve. Experimental determination of the optimal values for these parameters will make it possible to provide for a feasible design of HRP in the given pump. The optimal HRP will make it possible to ensure the required performance (delivery, head, efficiency) of the combined system.
... This paper presents the experimental validation of a mathematical model that was developed in a previous study (Rajaonison and Rakotondramiarana, 2019) for simulating the operation of a hydram pump equipped with a springs system. More precisely, the model underwent a global sensitivity analysis based on a derived method Fourier Amplitude Sensitivity Test (FAST) for ranking in downward order the main effects and the second interaction effects of the various model parameters (Rakotondramiarana and Andriamamonjy, 2013). ...
... More precisely, the model underwent a global sensitivity analysis based on a derived method Fourier Amplitude Sensitivity Test (FAST) for ranking in downward order the main effects and the second interaction effects of the various model parameters (Rakotondramiarana and Andriamamonjy, 2013). As a result, the most sensitive parameter of the studied model is the pump waste valve stroke (Rajaonison and Rakotondramiarana, 2019). Consequently, this paper focuses on the change of the pumped water flow while experimentally varying the pump waste valve stroke and keeping constant the other parameters involved in the operation of the pump as listed in (Rajaonison and Rakotondramiarana, 2019). ...
... As a result, the most sensitive parameter of the studied model is the pump waste valve stroke (Rajaonison and Rakotondramiarana, 2019). Consequently, this paper focuses on the change of the pumped water flow while experimentally varying the pump waste valve stroke and keeping constant the other parameters involved in the operation of the pump as listed in (Rajaonison and Rakotondramiarana, 2019). Finally, the model is recalibrated according to the experimental data. ...
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Water pumps, which usually require fuels or power, are for carrying water from water sources to a facility, generally a household or a farm in the countryside. The present study consists of conducting an experimental validation of a mathematical model that was developed in a previous work for simulating the functioning of a new form of the hydraulic ram pump, also known as the hydram pump. This new configuration differs from the conventional ones in that a springs system is incorporated. As this type of pump uses only water energy to operate, thanks to an overpressure called the «water hammer» phenomenon, the experiment could be carried out on a small scale in Antananarivo, Madagascar. Hence, this paper opens new research perspectives on the hydram pump. The recalibration of the model according to its experimental validation allows the dimensioning of any system, in any field, using this type of water pump.
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Developed and crafted in Madagascar, the Raseta pump is a novel hydraulic ram (hydram) pump using a springs system. It operates differently from other pumps by the exclusive use of water energy due to the water hammer phenomenon induced by the sudden stop of the water flow. The present study initiates the investigation of the environmental impacts of this new type of hydram pump through a life cycle analysis using OpenLCA 1.8. It was found that, when operating in a small-scale water pumping system, the choice of the pump supply pipe material has small differences of environmental impacts, whether the material is made of steel or polyvinyl chloride (PVC). Moreover, compared to a solar pump for the same pumping flow rate, the use of the Raseta pump is more environmentally friendly and less harmful to human health. However, the actual advantageous utilization of such a system needs further studies such as social and techno-economic analysis.